[openssl] master update

Dr. Paul Dale pauli at openssl.org
Thu Dec 19 02:37:07 UTC 2019


The branch master has been updated
       via  31b59078c8245a4ee7f7fa4e6ea98bba7f9a29a5 (commit)
      from  51a7c4b5f2a0b2d0f6bc0c87ec2ee44b9697dc78 (commit)


- Log -----------------------------------------------------------------
commit 31b59078c8245a4ee7f7fa4e6ea98bba7f9a29a5
Author: Fangming.Fang <fangming.fang at arm.com>
Date:   Fri May 31 10:15:10 2019 +0000

    Optimize AES-GCM implementation on aarch64
    
    Comparing to current implementation, this change can get more
    performance improved by tunning the loop-unrolling factor in
    interleave implementation as well as by enabling high level parallelism.
    
    Performance(A72)
    
    new
    type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes   16384 bytes
    aes-128-gcm     113065.51k   375743.00k   848359.51k  1517865.98k  1964040.19k  1986663.77k
    aes-192-gcm     110679.32k   364470.63k   799322.88k  1428084.05k  1826917.03k  1848967.17k
    aes-256-gcm     104919.86k   352939.29k   759477.76k  1330683.56k  1663175.34k  1670430.72k
    
    old
    type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes   16384 bytes
    aes-128-gcm     115595.32k   382348.65k   855891.29k  1236452.35k  1425670.14k  1429793.45k
    aes-192-gcm     112227.02k   369543.47k   810046.55k  1147948.37k  1286288.73k  1296941.06k
    aes-256-gcm     111543.90k   361902.36k   769543.59k  1070693.03k  1208576.68k  1207511.72k
    
    Change-Id: I28a2dca85c001a63a2a942e80c7c64f7a4fdfcf7
    
    Reviewed-by: Bernd Edlinger <bernd.edlinger at hotmail.de>
    Reviewed-by: Paul Dale <paul.dale at oracle.com>
    (Merged from https://github.com/openssl/openssl/pull/9818)

-----------------------------------------------------------------------

Summary of changes:
 crypto/build.info                                  |    1 +
 crypto/evp/e_aes.c                                 |    2 -
 crypto/modes/asm/aes-gcm-armv8_64.pl               | 5722 ++++++++++++++++++++
 crypto/modes/build.info                            |    4 +-
 include/crypto/ciphermode_platform.h               |   33 +-
 .../implementations/ciphers/cipher_aes_gcm_hw.c    |    2 +
 .../ciphers/cipher_aes_gcm_hw_armv8.inc            |   83 +
 .../implementations/ciphers/ciphercommon_gcm_hw.c  |   19 +-
 8 files changed, 5854 insertions(+), 12 deletions(-)
 create mode 100755 crypto/modes/asm/aes-gcm-armv8_64.pl
 create mode 100644 providers/implementations/ciphers/cipher_aes_gcm_hw_armv8.inc

diff --git a/crypto/build.info b/crypto/build.info
index 758a75ec6b..ab10a1cfe6 100644
--- a/crypto/build.info
+++ b/crypto/build.info
@@ -85,6 +85,7 @@ DEFINE[../libcrypto]=$UTIL_DEFINE $UPLINKDEF
 DEFINE[../providers/libfips.a]=$UTIL_DEFINE
 DEFINE[../providers/fips]=$UTIL_DEFINE
 DEFINE[../providers/libimplementations.a]=$UTIL_DEFINE
+DEFINE[../providers/libcommon.a]=$UTIL_DEFINE
 
 DEPEND[info.o]=buildinf.h
 DEPEND[cversion.o]=buildinf.h
diff --git a/crypto/evp/e_aes.c b/crypto/evp/e_aes.c
index 296e8db1ca..b95adf0bbf 100644
--- a/crypto/evp/e_aes.c
+++ b/crypto/evp/e_aes.c
@@ -130,8 +130,6 @@ static void ctr64_inc(unsigned char *counter)
 
 #if defined(AESNI_CAPABLE)
 # if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
-#  define AES_gcm_encrypt aesni_gcm_encrypt
-#  define AES_gcm_decrypt aesni_gcm_decrypt
 #  define AES_GCM_ASM2(gctx)      (gctx->gcm.block==(block128_f)aesni_encrypt && \
                                  gctx->gcm.ghash==gcm_ghash_avx)
 #  undef AES_GCM_ASM2          /* minor size optimization */
diff --git a/crypto/modes/asm/aes-gcm-armv8_64.pl b/crypto/modes/asm/aes-gcm-armv8_64.pl
new file mode 100755
index 0000000000..ee88906d85
--- /dev/null
+++ b/crypto/modes/asm/aes-gcm-armv8_64.pl
@@ -0,0 +1,5722 @@
+#! /usr/bin/env perl
+# Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the Apache License 2.0 (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
+#
+#========================================================================
+# Written by Fangming Fang <fangming.fang at arm.com> for the OpenSSL project,
+# derived from https://github.com/ARM-software/AArch64cryptolib, original
+# author Samuel Lee <Samuel.Lee at arm.com>. The module is, however, dual
+# licensed under OpenSSL and CRYPTOGAMS licenses depending on where you
+# obtain it. For further details see http://www.openssl.org/~appro/cryptogams/.
+#========================================================================
+#
+# Approach - assume we don't want to reload constants, so reserve ~half of vector register file for constants
+#
+# main loop to act on 4 16B blocks per iteration, and then do modulo of the accumulated intermediate hashes from the 4 blocks
+#
+#  ____________________________________________________
+# |                                                    |
+# | PRE                                                |
+# |____________________________________________________|
+# |                |                |                  |
+# | CTR block 4k+8 | AES block 4k+4 | GHASH block 4k+0 |
+# |________________|________________|__________________|
+# |                |                |                  |
+# | CTR block 4k+9 | AES block 4k+5 | GHASH block 4k+1 |
+# |________________|________________|__________________|
+# |                |                |                  |
+# | CTR block 4k+10| AES block 4k+6 | GHASH block 4k+2 |
+# |________________|________________|__________________|
+# |                |                |                  |
+# | CTR block 4k+11| AES block 4k+7 | GHASH block 4k+3 |
+# |________________|____(mostly)____|__________________|
+# |                                                    |
+# | MODULO                                             |
+# |____________________________________________________|
+#
+# PRE:
+#     Ensure previous generated intermediate hash is aligned and merged with result for GHASH 4k+0
+# EXT low_acc, low_acc, low_acc, #8
+# EOR res_curr (4k+0), res_curr (4k+0), low_acc
+#
+# CTR block:
+#     Increment and byte reverse counter in scalar registers and transfer to SIMD registers
+# REV     ctr32, rev_ctr32
+# ORR     ctr64, constctr96_top32, ctr32, LSL #32
+# INS     ctr_next.d[0], constctr96_bottom64      // Keeping this in scalar registers to free up space in SIMD RF
+# INS     ctr_next.d[1], ctr64X
+# ADD     rev_ctr32, #1
+#
+# AES block:
+#     Do AES encryption/decryption on CTR block X and EOR it with input block X. Take 256 bytes key below for example.
+#     Doing small trick here of loading input in scalar registers, EORing with last key and then transferring
+#     Given we are very constrained in our ASIMD registers this is quite important
+#
+#     Encrypt:
+# LDR     input_low, [ input_ptr  ], #8
+# LDR     input_high, [ input_ptr  ], #8
+# EOR     input_low, k14_low
+# EOR     input_high, k14_high
+# INS     res_curr.d[0], input_low
+# INS     res_curr.d[1], input_high
+# AESE    ctr_curr, k0; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k1; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k2; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k3; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k4; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k5; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k6; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k7; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k8; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k9; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k10; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k11; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k12; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k13
+# EOR     res_curr, res_curr, ctr_curr
+# ST1     { res_curr.16b  }, [ output_ptr  ], #16
+#
+#     Decrypt:
+# AESE    ctr_curr, k0; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k1; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k2; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k3; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k4; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k5; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k6; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k7; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k8; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k9; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k10; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k11; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k12; AESMC ctr_curr, ctr_curr
+# AESE    ctr_curr, k13
+# LDR     res_curr, [ input_ptr  ], #16
+# EOR     res_curr, res_curr, ctr_curr
+# MOV     output_low, res_curr.d[0]
+# MOV     output_high, res_curr.d[1]
+# EOR     output_low, k14_low
+# EOR     output_high, k14_high
+# STP     output_low, output_high, [ output_ptr  ], #16
+#
+# GHASH block X:
+#     do 128b karatsuba polynomial multiplication on block
+#     We only have 64b->128b polynomial multipliers, naively that means we need to do 4 64b multiplies to generate a 128b
+#
+# multiplication:
+#     Pmull(A,B) == (Pmull(Ah,Bh)<<128 | Pmull(Al,Bl)) ^ (Pmull(Ah,Bl) ^ Pmull(Al,Bh))<<64
+#
+#     The idea behind Karatsuba multiplication is that we can do just 3 64b multiplies:
+#     Pmull(A,B) == (Pmull(Ah,Bh)<<128 | Pmull(Al,Bl)) ^ (Pmull(Ah^Al,Bh^Bl) ^ Pmull(Ah,Bh) ^ Pmull(Al,Bl))<<64
+#
+#     There is some complication here because the bit order of GHASH's PMULL is reversed compared to elsewhere, so we are
+#     multiplying with "twisted" powers of H
+#
+# Note: We can PMULL directly into the acc_x in first GHASH of the loop
+# Note: For scheduling big cores we want to split the processing to happen over two loop iterations - otherwise the critical
+#       path latency dominates the performance
+#
+#       This has a knock on effect on register pressure, so we have to be a bit more clever with our temporary registers
+#       than indicated here
+# REV64   res_curr, res_curr
+# INS     t_m.d[0], res_curr.d[1]
+# EOR     t_m.8B, t_m.8B, res_curr.8B
+# PMULL2  t_h, res_curr, HX
+# PMULL   t_l, res_curr, HX
+# PMULL   t_m, t_m, HX_k
+# EOR     acc_h, acc_h, t_h
+# EOR     acc_l, acc_l, t_l
+# EOR     acc_m, acc_m, t_m
+#
+# MODULO: take the partial accumulators (~representing sum of 256b multiplication results), from GHASH and do modulo reduction on them
+#         There is some complication here because the bit order of GHASH's PMULL is reversed compared to elsewhere, so we are doing modulo
+#         with a reversed constant
+# EOR     acc_m, acc_m, acc_h
+# EOR     acc_m, acc_m, acc_l                     // Finish off karatsuba processing
+# PMULL   t_mod, acc_h, mod_constant
+# EXT     acc_h, acc_h, acc_h, #8
+# EOR     acc_m, acc_m, acc_h
+# EOR     acc_m, acc_m, t_mod
+# PMULL   acc_h, acc_m, mod_constant
+# EXT     acc_m, acc_m, acc_m, #8
+# EOR     acc_l, acc_l, acc_h
+# EOR     acc_l, acc_l, acc_m
+
+$output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
+$flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;
+
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+( $xlate="${dir}arm-xlate.pl" and -f $xlate  ) or
+( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate ) or
+die "can't locate arm-xlate.pl";
+
+open OUT,"| \"$^X\" $xlate $flavour $output";
+*STDOUT=*OUT;
+
+$input_ptr="x0";  #argument block
+$bit_length="x1";
+$output_ptr="x2";
+$current_tag="x3";
+$counter="x16";
+$cc="x8";
+
+{
+my ($end_input_ptr,$main_end_input_ptr,$input_l0,$input_h0)=map("x$_",(4..7));
+my ($input_l1,$input_h1,$input_l2,$input_h2,$input_l3,$input_h3)=map("x$_",(19..24));
+my ($output_l1,$output_h1,$output_l2,$output_h2,$output_l3,$output_h3)=map("x$_",(19..24));
+my ($output_l0,$output_h0)=map("x$_",(6..7));
+
+my $ctr32w="w9";
+my ($ctr32x,$ctr96_b64x,$ctr96_t32x,$rctr32x,$rk10_l,$rk10_h,$len)=map("x$_",(9..15));
+my ($ctr96_t32w,$rctr32w)=map("w$_",(11..12));
+
+my ($ctr0b,$ctr1b,$ctr2b,$ctr3b,$res0b,$res1b,$res2b,$res3b)=map("v$_.16b",(0..7));
+my ($ctr0,$ctr1,$ctr2,$ctr3,$res0,$res1,$res2,$res3)=map("v$_",(0..7));
+my ($ctr0d,$ctr1d,$ctr2d,$ctr3d,$res0d,$res1d,$res2d,$res3d)=map("d$_",(0..7));
+my ($res0q,$res1q,$res2q,$res3q)=map("q$_",(4..7));
+
+my ($acc_hb,$acc_mb,$acc_lb)=map("v$_.16b",(9..11));
+my ($acc_h,$acc_m,$acc_l)=map("v$_",(9..11));
+my ($acc_hd,$acc_md,$acc_ld)=map("d$_",(9..11));
+
+my ($h1,$h2,$h3,$h4,$h12k,$h34k)=map("v$_",(12..17));
+my ($h1q,$h2q,$h3q,$h4q)=map("q$_",(12..15));
+my ($h1b,$h2b,$h3b,$h4b)=map("v$_.16b",(12..15));
+
+my $t0="v8";
+my $t0d="d8";
+
+my ($t1,$t2,$t3)=map("v$_",(28..30));
+my ($t1d,$t2d,$t3d)=map("d$_",(28..30));
+
+my $t4="v8";
+my $t4d="d8";
+my $t5="v28";
+my $t5d="d28";
+my $t6="v31";
+my $t6d="d31";
+
+my $t7="v4";
+my $t7d="d4";
+my $t8="v29";
+my $t8d="d29";
+my $t9="v30";
+my $t9d="d30";
+
+my ($ctr_t0,$ctr_t1,$ctr_t2,$ctr_t3)=map("v$_",(4..7));
+my ($ctr_t0d,$ctr_t1d,$ctr_t2d,$ctr_t3d)=map("d$_",(4..7));
+my ($ctr_t0b,$ctr_t1b,$ctr_t2b,$ctr_t3b)=map("v$_.16b",(4..7));
+
+my $mod_constantd="d8";
+my $mod_constant="v8";
+my $mod_t="v31";
+
+my ($rk0,$rk1,$rk2,$rk3,$rk4,$rk5,$rk6,$rk7,$rk8,$rk9)=map("v$_.16b",(18..27));
+my ($rk0q,$rk1q,$rk2q,$rk3q,$rk4q,$rk5q,$rk6q,$rk7q,$rk8q,$rk9q)=map("q$_",(18..27));
+my $rk2q1="v20.1q";
+my $rk3q1="v21.1q";
+my $rk4v="v22";
+my $rk4d="d22";
+
+$code=<<___;
+#include "arm_arch.h"
+
+#if __ARM_MAX_ARCH__>=8
+___
+$code.=".arch   armv8-a+crypto\n.text\n"    if ($flavour =~ /64/);
+$code.=<<___                    if ($flavour !~ /64/);
+.fpu    neon
+#ifdef __thumb2__
+.syntax        unified
+.thumb
+# define INST(a,b,c,d) $_byte  c,0xef,a,b
+#else
+.code  32
+# define INST(a,b,c,d) $_byte  a,b,c,0xf2
+#endif
+
+.text
+___
+
+#########################################################################################
+# size_t aes_gcm_enc_128_kernel(const unsigned char *in,
+#                               size_t len,
+#                               unsigned char *out,
+#                               const void *key,
+#                               unsigned char ivec[16],
+#                               u64 *Xi);
+#
+$code.=<<___;
+.global aes_gcm_enc_128_kernel
+.type   aes_gcm_enc_128_kernel,%function
+.align  4
+aes_gcm_enc_128_kernel:
+	cbz     x1, .L128_enc_ret
+	stp     x19, x20, [sp, #-112]!
+	mov     x16, x4
+	mov     x8, x5
+	stp     x21, x22, [sp, #16]
+	stp     x23, x24, [sp, #32]
+	stp     d8, d9, [sp, #48]
+	stp     d10, d11, [sp, #64]
+	stp     d12, d13, [sp, #80]
+	stp     d14, d15, [sp, #96]
+
+	ldp     $ctr96_b64x, $ctr96_t32x, [$counter]              @ ctr96_b64, ctr96_t32
+	ldp     $rk10_l, $rk10_h, [$cc, #160]                     @ load rk10
+
+	ld1     {$acc_lb}, [$current_tag]
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+	lsr     $main_end_input_ptr, $bit_length, #3              @ byte_len
+	mov     $len, $main_end_input_ptr
+
+	ldr     $rk9q, [$cc, #144]                                @ load rk9
+	add     $end_input_ptr, $input_ptr, $bit_length, lsr #3   @ end_input_ptr
+	sub     $main_end_input_ptr, $main_end_input_ptr, #1      @ byte_len - 1
+
+	lsr     $rctr32x, $ctr96_t32x, #32
+	ldr     $h4q, [$current_tag, #112]                        @ load h4l | h4h
+	ext     $h4b, $h4b, $h4b, #8
+
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 1
+	rev     $rctr32w, $rctr32w                                @ rev_ctr32
+
+	add     $rctr32w, $rctr32w, #1                            @ increment rev_ctr32
+	orr     $ctr96_t32w, $ctr96_t32w, $ctr96_t32w
+	ldr     $rk0q, [$cc, #0]                                  @ load rk0
+
+	rev     $ctr32w, $rctr32w                                 @ CTR block 1
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 1
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 3
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 1
+	ld1     { $ctr0b}, [$counter]                             @ special case vector load initial counter so we can start first AES block as quickly as possible
+
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 1
+	rev     $ctr32w, $rctr32w                                 @ CTR block 2
+
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 2
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 2
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 2
+
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 2
+	rev     $ctr32w, $rctr32w                                 @ CTR block 3
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 3
+	ldr     $rk1q, [$cc, #16]                                 @ load rk1
+
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 3
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 3
+
+	ldr     $h3q, [$current_tag, #80]                         @ load h3l | h3h
+	ext     $h3b, $h3b, $h3b, #8
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 0
+	ldr     $rk2q, [$cc, #32]                                 @ load rk2
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 0
+	ldr     $h1q, [$current_tag, #32]                         @ load h1l | h1h
+	ext     $h1b, $h1b, $h1b, #8
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 0
+	ldr     $rk8q, [$cc, #128]                                @ load rk8
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 0
+	ldr     $rk3q, [$cc, #48]                                 @ load rk3
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 1
+	trn2    $h34k.2d,  $h3.2d,    $h4.2d                      @ h4l | h3l
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 1
+	ldr     $rk6q, [$cc, #96]                                 @ load rk6
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 1
+	ldr     $rk7q, [$cc, #112]                                @ load rk7
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 1
+	trn1    $acc_h.2d, $h3.2d,    $h4.2d                      @ h4h | h3h
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 2
+	ldr     $rk5q, [$cc, #80]                                 @ load rk5
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 2
+	ldr     $h2q, [$current_tag, #64]                         @ load h2l | h2h
+	ext     $h2b, $h2b, $h2b, #8
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 2
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 2
+	eor     $h34k.16b, $h34k.16b, $acc_h.16b                  @ h4k | h3k
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 3
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 3
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 3
+	ldr     $rk4q, [$cc, #64]                                 @ load rk4
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 3
+
+	and     $main_end_input_ptr, $main_end_input_ptr, #0xffffffffffffffc0    @ number of bytes to be processed in main loop (at least 1 byte must be handled by tail)
+	trn2    $h12k.2d,  $h1.2d,    $h2.2d                      @ h2l | h1l
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 4
+	add     $main_end_input_ptr, $main_end_input_ptr, $input_ptr
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 4
+	cmp     $input_ptr, $main_end_input_ptr                   @ check if we have <= 4 blocks
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 4
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 5
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 5
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 5
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 6
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 4
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 6
+	trn1    $t0.2d,    $h1.2d,    $h2.2d                      @ h2h | h1h
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 6
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 5
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 7
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 7
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 6
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 7
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 8
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 7
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 8
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 8
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 8
+
+	aese    $ctr2b, $rk9                                      @ AES block 2 - round 9
+
+	aese    $ctr0b, $rk9                                      @ AES block 0 - round 9
+
+	eor     $h12k.16b, $h12k.16b, $t0.16b                     @ h2k | h1k
+
+	aese    $ctr1b, $rk9                                      @ AES block 1 - round 9
+
+	aese    $ctr3b, $rk9                                      @ AES block 3 - round 9
+	b.ge    .L128_enc_tail                                    @ handle tail
+
+	ldp     $input_l0, $input_h0, [$input_ptr, #0]            @ AES block 0 - load plaintext
+
+	ldp     $input_l2, $input_h2, [$input_ptr, #32]           @ AES block 2 - load plaintext
+
+	ldp     $input_l1, $input_h1, [$input_ptr, #16]           @ AES block 1 - load plaintext
+
+	ldp     $input_l3, $input_h3, [$input_ptr, #48]           @ AES block 3 - load plaintext
+
+	eor     $input_l0, $input_l0, $rk10_l                     @ AES block 0 - round 10 low
+	eor     $input_h0, $input_h0, $rk10_h                     @ AES block 0 - round 10 high
+
+	eor     $input_l2, $input_l2, $rk10_l                     @ AES block 2 - round 10 low
+	fmov    $ctr_t0d, $input_l0                               @ AES block 0 - mov low
+
+	eor     $input_l1, $input_l1, $rk10_l                     @ AES block 1 - round 10 low
+	eor     $input_h2, $input_h2, $rk10_h                     @ AES block 2 - round 10 high
+	fmov    $ctr_t0.d[1], $input_h0                           @ AES block 0 - mov high
+
+	fmov    $ctr_t1d, $input_l1                               @ AES block 1 - mov low
+	eor     $input_h1, $input_h1, $rk10_h                     @ AES block 1 - round 10 high
+
+	eor     $input_l3, $input_l3, $rk10_l                     @ AES block 3 - round 10 low
+	fmov    $ctr_t1.d[1], $input_h1                           @ AES block 1 - mov high
+
+	fmov    $ctr_t2d, $input_l2                               @ AES block 2 - mov low
+	eor     $input_h3, $input_h3, $rk10_h                     @ AES block 3 - round 10 high
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4
+
+	fmov    $ctr_t2.d[1], $input_h2                           @ AES block 2 - mov high
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4
+
+	eor     $res0b, $ctr_t0b, $ctr0b                          @ AES block 0 - result
+	fmov    $ctr0d, $ctr96_b64x                               @ CTR block 4
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4
+
+	fmov    $ctr0.d[1], $ctr32x                               @ CTR block 4
+	rev     $ctr32w, $rctr32w                                 @ CTR block 5
+
+	eor     $res1b, $ctr_t1b, $ctr1b                          @ AES block 1 - result
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 5
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 5
+
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 5
+	add     $input_ptr, $input_ptr, #64                       @ AES input_ptr update
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 5
+
+	fmov    $ctr_t3d, $input_l3                               @ AES block 3 - mov low
+	rev     $ctr32w, $rctr32w                                 @ CTR block 6
+	st1     { $res0b}, [$output_ptr], #16                     @ AES block 0 - store result
+
+	fmov    $ctr_t3.d[1], $input_h3                           @ AES block 3 - mov high
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 6
+
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 6
+	eor     $res2b, $ctr_t2b, $ctr2b                          @ AES block 2 - result
+	st1     { $res1b}, [$output_ptr], #16                     @ AES block 1 - store result
+
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 6
+	cmp     $input_ptr, $main_end_input_ptr                   @ check if we have <= 8 blocks
+
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 6
+	rev     $ctr32w, $rctr32w                                 @ CTR block 7
+	st1     { $res2b}, [$output_ptr], #16                     @ AES block 2 - store result
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 7
+
+	eor     $res3b, $ctr_t3b, $ctr3b                          @ AES block 3 - result
+	st1     { $res3b}, [$output_ptr], #16                     @ AES block 3 - store result
+	b.ge    .L128_enc_prepretail                              @ do prepretail
+
+	.L128_enc_main_loop:                                      @ main loop start
+	ldp     $input_l3, $input_h3, [$input_ptr, #48]           @ AES block 4k+3 - load plaintext
+	rev64   $res0b, $res0b                                    @ GHASH block 4k (only t0 is free)
+	rev64   $res2b, $res2b                                    @ GHASH block 4k+2 (t0, t1, and t2 free)
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 0
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 4k+3
+
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                     @ PRE 0
+	rev64   $res1b, $res1b                                    @ GHASH block 4k+1 (t0 and t1 free)
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 0
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+3
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 4k+3
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 0
+	mov     $t6d, $res2.d[1]                                  @ GHASH block 4k+2 - mid
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 1
+	mov     $t3d, $res1.d[1]                                  @ GHASH block 4k+1 - mid
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 1
+	eor     $res0b, $res0b, $acc_lb                           @ PRE 1
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 0
+	eor     $input_h3, $input_h3, $rk10_h                     @ AES block 4k+3 - round 10 high
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                          @ GHASH block 4k+1 - high
+	eor     $t6.8b, $t6.8b, $res2.8b                          @ GHASH block 4k+2 - mid
+	ldp     $input_l0, $input_h0, [$input_ptr, #0]            @ AES block 4k+4 - load plaintext
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 1
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+8
+
+	eor     $t3.8b, $t3.8b, $res1.8b                          @ GHASH block 4k+1 - mid
+	mov     $t0d, $res0.d[1]                                  @ GHASH block 4k - mid
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+8
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH block 4k - high
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+8
+	mov     $acc_md, $h34k.d[1]                               @ GHASH block 4k - mid
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 2
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH block 4k - low
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH block 4k - mid
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 2
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 3
+	eor     $acc_hb, $acc_hb, $t1.16b                         @ GHASH block 4k+1 - high
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                          @ GHASH block 4k+2 - low
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                      @ GHASH block 4k - mid
+	rev64   $res3b, $res3b                                    @ GHASH block 4k+3 (t0, t1, t2 and t3 free)
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                          @ GHASH block 4k+1 - mid
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                          @ GHASH block 4k+1 - low
+	ins     $t6.d[1], $t6.d[0]                                @ GHASH block 4k+2 - mid
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                          @ GHASH block 4k+2 - high
+	eor     $input_h0, $input_h0, $rk10_h                     @ AES block 4k+4 - round 10 high
+
+	eor     $acc_mb, $acc_mb, $t3.16b                         @ GHASH block 4k+1 - mid
+	mov     $t9d, $res3.d[1]                                  @ GHASH block 4k+3 - mid
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 1
+	eor     $acc_lb, $acc_lb, $t2.16b                         @ GHASH block 4k+1 - low
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 2
+	eor     $input_l0, $input_l0, $rk10_l                     @ AES block 4k+4 - round 10 low
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 3
+	eor     $t9.8b, $t9.8b, $res3.8b                          @ GHASH block 4k+3 - mid
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                          @ GHASH block 4k+3 - high
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 3
+	eor     $acc_hb, $acc_hb, $t4.16b                         @ GHASH block 4k+2 - high
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                          @ GHASH block 4k+2 - mid
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                          @ GHASH block 4k+3 - low
+	movi    $mod_constant.8b, #0xc2
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                          @ GHASH block 4k+3 - mid
+	eor     $acc_lb, $acc_lb, $t5.16b                         @ GHASH block 4k+2 - low
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 4
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 2
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 4
+	eor     $acc_hb, $acc_hb, $t7.16b                         @ GHASH block 4k+3 - high
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 5
+	ldp     $input_l1, $input_h1, [$input_ptr, #16]           @ AES block 4k+5 - load plaintext
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 3
+	eor     $acc_mb, $acc_mb, $t6.16b                         @ GHASH block 4k+2 - mid
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 5
+	ldp     $input_l2, $input_h2, [$input_ptr, #32]           @ AES block 4k+6 - load plaintext
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+	eor     $acc_lb, $acc_lb, $t8.16b                         @ GHASH block 4k+3 - low
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 4
+	eor     $input_l1, $input_l1, $rk10_l                     @ AES block 4k+5 - round 10 low
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 4
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 6
+	eor     $input_l3, $input_l3, $rk10_l                     @ AES block 4k+3 - round 10 low
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 5
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	fmov    $ctr_t0d, $input_l0                               @ AES block 4k+4 - mov low
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 6
+	fmov    $ctr_t0.d[1], $input_h0                           @ AES block 4k+4 - mov high
+
+	add     $input_ptr, $input_ptr, #64                       @ AES input_ptr update
+	fmov    $ctr_t3d, $input_l3                               @ AES block 4k+3 - mov low
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 5
+	fmov    $ctr_t1d, $input_l1                               @ AES block 4k+5 - mov low
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 7
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 6
+	eor     $input_h1, $input_h1, $rk10_h                     @ AES block 4k+5 - round 10 high
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 7
+	fmov    $ctr_t1.d[1], $input_h1                           @ AES block 4k+5 - mov high
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 8
+	fmov    $ctr_t3.d[1], $input_h3                           @ AES block 4k+3 - mov high
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 6
+	cmp     $input_ptr, $main_end_input_ptr                   @ LOOP CONTROL
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 8
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+
+	aese    $ctr0b, $rk9                                      @ AES block 4k+4 - round 9
+	eor     $input_l2, $input_l2, $rk10_l                     @ AES block 4k+6 - round 10 low
+	eor     $input_h2, $input_h2, $rk10_h                     @ AES block 4k+6 - round 10 high
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 7
+	fmov    $ctr_t2d, $input_l2                               @ AES block 4k+6 - mov low
+
+	aese    $ctr1b, $rk9                                      @ AES block 4k+5 - round 9
+	fmov    $ctr_t2.d[1], $input_h2                           @ AES block 4k+6 - mov high
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 7
+	eor     $res0b, $ctr_t0b, $ctr0b                          @ AES block 4k+4 - result
+
+	fmov    $ctr0d, $ctr96_b64x                               @ CTR block 4k+8
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 8
+
+	fmov    $ctr0.d[1], $ctr32x                               @ CTR block 4k+8
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+9
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ MODULO - fold into mid
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 8
+	eor     $res1b, $ctr_t1b, $ctr1b                          @ AES block 4k+5 - result
+
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+9
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+9
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 4k+9
+
+	pmull   $acc_h.1q, $acc_m.1d, $mod_constant.1d            @ MODULO - mid 64b align with low
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 4k+9
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+10
+
+	aese    $ctr2b, $rk9                                      @ AES block 4k+6 - round 9
+	st1     { $res0b}, [$output_ptr], #16                     @ AES block 4k+4 - store result
+	eor     $res2b, $ctr_t2b, $ctr2b                          @ AES block 4k+6 - result
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+10
+
+	aese    $ctr3b, $rk9                                      @ AES block 4k+7 - round 9
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+10
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 4k+10
+
+	eor     $acc_lb, $acc_lb, $acc_hb                         @ MODULO - fold into low
+	st1     { $res1b}, [$output_ptr], #16                     @ AES block 4k+5 - store result
+
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 4k+10
+	st1     { $res2b}, [$output_ptr], #16                     @ AES block 4k+6 - store result
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+11
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+11
+	eor     $res3b, $ctr_t3b, $ctr3b                          @ AES block 4k+3 - result
+
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+	st1     { $res3b}, [$output_ptr], #16                     @ AES block 4k+3 - store result
+	b.lt    .L128_enc_main_loop
+
+	.L128_enc_prepretail:                                     @ PREPRETAIL
+	rev64   $res0b, $res0b                                    @ GHASH block 4k (only t0 is free)
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 4k+3
+	rev64   $res1b, $res1b                                    @ GHASH block 4k+1 (t0 and t1 free)
+
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                     @ PRE 0
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+3
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 4k+3
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 0
+	rev64   $res2b, $res2b                                    @ GHASH block 4k+2 (t0, t1, and t2 free)
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                          @ GHASH block 4k+1 - low
+
+	rev64   $res3b, $res3b                                    @ GHASH block 4k+3 (t0, t1, t2 and t3 free)
+	eor     $res0b, $res0b, $acc_lb                           @ PRE 1
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                          @ GHASH block 4k+1 - high
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 0
+	mov     $t3d, $res1.d[1]                                  @ GHASH block 4k+1 - mid
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH block 4k - low
+	mov     $t0d, $res0.d[1]                                  @ GHASH block 4k - mid
+
+	mov     $t6d, $res2.d[1]                                  @ GHASH block 4k+2 - mid
+	mov     $acc_md, $h34k.d[1]                               @ GHASH block 4k - mid
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 1
+	eor     $t3.8b, $t3.8b, $res1.8b                          @ GHASH block 4k+1 - mid
+
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH block 4k - mid
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH block 4k - high
+	eor     $t6.8b, $t6.8b, $res2.8b                          @ GHASH block 4k+2 - mid
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 1
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                          @ GHASH block 4k+1 - mid
+	eor     $acc_lb, $acc_lb, $t2.16b                         @ GHASH block 4k+1 - low
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                      @ GHASH block 4k - mid
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 0
+	ins     $t6.d[1], $t6.d[0]                                @ GHASH block 4k+2 - mid
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 0
+
+	eor     $acc_mb, $acc_mb, $t3.16b                         @ GHASH block 4k+1 - mid
+	mov     $t9d, $res3.d[1]                                  @ GHASH block 4k+3 - mid
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 1
+	eor     $acc_hb, $acc_hb, $t1.16b                         @ GHASH block 4k+1 - high
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                          @ GHASH block 4k+2 - mid
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                          @ GHASH block 4k+2 - high
+	eor     $t9.8b, $t9.8b, $res3.8b                          @ GHASH block 4k+3 - mid
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                          @ GHASH block 4k+3 - high
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                          @ GHASH block 4k+2 - low
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 1
+	eor     $acc_hb, $acc_hb, $t4.16b                         @ GHASH block 4k+2 - high
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 2
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                          @ GHASH block 4k+3 - low
+	movi    $mod_constant.8b, #0xc2
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 2
+	eor     $acc_lb, $acc_lb, $t5.16b                         @ GHASH block 4k+2 - low
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 2
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                          @ GHASH block 4k+3 - mid
+	eor     $acc_mb, $acc_mb, $t6.16b                         @ GHASH block 4k+2 - mid
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 3
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 2
+	eor     $acc_hb, $acc_hb, $t7.16b                         @ GHASH block 4k+3 - high
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 3
+
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ GHASH block 4k+3 - mid
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 3
+	eor     $acc_lb, $acc_lb, $t8.16b                         @ GHASH block 4k+3 - low
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 4
+
+	pmull   $t1.1q, $acc_h.1d, $mod_constant.1d
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ karatsuba tidy up
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 4
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 5
+	ext     $acc_hb, $acc_hb, $acc_hb, #8
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 3
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 4
+	eor     $acc_mb, $acc_mb, $acc_lb
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 6
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 4
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 5
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 5
+	eor     $acc_mb, $acc_mb, $t1.16b
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 5
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 6
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 6
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 6
+	eor     $acc_mb, $acc_mb, $acc_hb
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 7
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 7
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 7
+
+	pmull   $t1.1q, $acc_m.1d, $mod_constant.1d
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 7
+	ext     $acc_mb, $acc_mb, $acc_mb, #8
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 8
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 8
+	eor     $acc_lb, $acc_lb, $t1.16b
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 8
+
+	aese    $ctr3b, $rk9                                      @ AES block 4k+7 - round 9
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 8
+
+	aese    $ctr0b, $rk9                                      @ AES block 4k+4 - round 9
+
+	aese    $ctr1b, $rk9                                      @ AES block 4k+5 - round 9
+	eor     $acc_lb, $acc_lb, $acc_mb
+
+	aese    $ctr2b, $rk9                                      @ AES block 4k+6 - round 9
+	.L128_enc_tail:                                           @ TAIL
+
+	sub     $main_end_input_ptr, $end_input_ptr, $input_ptr   @ main_end_input_ptr is number of bytes left to process
+	ldp     $input_l0, $input_h0, [$input_ptr], #16           @ AES block 4k+4 - load plaintext
+
+	cmp     $main_end_input_ptr, #48
+
+	ext     $t0.16b, $acc_lb, $acc_lb, #8                     @ prepare final partial tag
+	eor     $input_l0, $input_l0, $rk10_l                     @ AES block 4k+4 - round 10 low
+	eor     $input_h0, $input_h0, $rk10_h                     @ AES block 4k+4 - round 10 high
+
+	fmov    $ctr_t0d, $input_l0                               @ AES block 4k+4 - mov low
+
+	fmov    $ctr_t0.d[1], $input_h0                           @ AES block 4k+4 - mov high
+
+	eor     $res1b, $ctr_t0b, $ctr0b                          @ AES block 4k+4 - result
+
+	b.gt    .L128_enc_blocks_more_than_3
+
+	sub     $rctr32w, $rctr32w, #1
+	movi    $acc_l.8b, #0
+	mov     $ctr3b, $ctr2b
+
+	cmp     $main_end_input_ptr, #32
+	mov     $ctr2b, $ctr1b
+	movi    $acc_h.8b, #0
+
+	movi    $acc_m.8b, #0
+	b.gt    .L128_enc_blocks_more_than_2
+
+	mov     $ctr3b, $ctr1b
+	cmp     $main_end_input_ptr, #16
+
+	sub     $rctr32w, $rctr32w, #1
+	b.gt    .L128_enc_blocks_more_than_1
+
+	sub     $rctr32w, $rctr32w, #1
+	b       .L128_enc_blocks_less_than_1
+	.L128_enc_blocks_more_than_3:                             @ blocks left >  3
+	st1     { $res1b}, [$output_ptr], #16                     @ AES final-3 block  - store result
+
+	ldp     $input_l0, $input_h0, [$input_ptr], #16           @ AES final-2 block - load input low & high
+
+	rev64   $res0b, $res1b                                    @ GHASH final-3 block
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+	eor     $input_h0, $input_h0, $rk10_h                     @ AES final-2 block - round 10 high
+	eor     $input_l0, $input_l0, $rk10_l                     @ AES final-2 block - round 10 low
+
+	fmov    $res1d, $input_l0                                 @ AES final-2 block - mov low
+
+	movi    $t0.8b, #0                                        @ suppress further partial tag feed in
+	fmov    $res1.d[1], $input_h0                             @ AES final-2 block - mov high
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH final-3 block - low
+	mov     $rk4d, $res0.d[1]                                 @ GHASH final-3 block - mid
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH final-3 block - high
+
+	mov     $acc_md, $h34k.d[1]                               @ GHASH final-3 block - mid
+
+	eor     $res1b, $res1b, $ctr1b                            @ AES final-2 block - result
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                      @ GHASH final-3 block - mid
+
+	pmull   $acc_m.1q, $rk4v.1d, $acc_m.1d                    @ GHASH final-3 block - mid
+	.L128_enc_blocks_more_than_2:                             @ blocks left >  2
+
+	st1     { $res1b}, [$output_ptr], #16                     @ AES final-2 block - store result
+
+	rev64   $res0b, $res1b                                    @ GHASH final-2 block
+	ldp     $input_l0, $input_h0, [$input_ptr], #16           @ AES final-1 block - load input low & high
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+
+	eor     $input_l0, $input_l0, $rk10_l                     @ AES final-1 block - round 10 low
+
+	fmov    $res1d, $input_l0                                 @ AES final-1 block - mov low
+	eor     $input_h0, $input_h0, $rk10_h                     @ AES final-1 block - round 10 high
+
+	pmull2  $rk2q1, $res0.2d, $h3.2d                          @ GHASH final-2 block - high
+	fmov    $res1.d[1], $input_h0                             @ AES final-1 block - mov high
+
+	mov     $rk4d, $res0.d[1]                                 @ GHASH final-2 block - mid
+
+	pmull   $rk3q1, $res0.1d, $h3.1d                          @ GHASH final-2 block - low
+
+	eor     $acc_hb, $acc_hb, $rk2                            @ GHASH final-2 block - high
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                      @ GHASH final-2 block - mid
+
+	eor     $res1b, $res1b, $ctr2b                            @ AES final-1 block - result
+
+	eor     $acc_lb, $acc_lb, $rk3                            @ GHASH final-2 block - low
+
+	pmull   $rk4v.1q, $rk4v.1d, $h34k.1d                      @ GHASH final-2 block - mid
+
+	movi    $t0.8b, #0                                        @ suppress further partial tag feed in
+
+	eor     $acc_mb, $acc_mb, $rk4v.16b                       @ GHASH final-2 block - mid
+	.L128_enc_blocks_more_than_1:                             @ blocks left >  1
+
+	st1     { $res1b}, [$output_ptr], #16                     @ AES final-1 block - store result
+
+	rev64   $res0b, $res1b                                    @ GHASH final-1 block
+	ldp     $input_l0, $input_h0, [$input_ptr], #16           @ AES final block - load input low & high
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+
+	eor     $input_h0, $input_h0, $rk10_h                     @ AES final block - round 10 high
+	eor     $input_l0, $input_l0, $rk10_l                     @ AES final block - round 10 low
+
+	fmov    $res1d, $input_l0                                 @ AES final block - mov low
+
+	pmull2  $rk2q1, $res0.2d, $h2.2d                          @ GHASH final-1 block - high
+	fmov    $res1.d[1], $input_h0                             @ AES final block - mov high
+
+	mov     $rk4d, $res0.d[1]                                 @ GHASH final-1 block - mid
+
+	pmull   $rk3q1, $res0.1d, $h2.1d                          @ GHASH final-1 block - low
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                      @ GHASH final-1 block - mid
+
+	eor     $res1b, $res1b, $ctr3b                            @ AES final block - result
+
+	ins     $rk4v.d[1], $rk4v.d[0]                            @ GHASH final-1 block - mid
+
+	pmull2  $rk4v.1q, $rk4v.2d, $h12k.2d                      @ GHASH final-1 block - mid
+
+	eor     $acc_lb, $acc_lb, $rk3                            @ GHASH final-1 block - low
+
+	eor     $acc_hb, $acc_hb, $rk2                            @ GHASH final-1 block - high
+
+	eor     $acc_mb, $acc_mb, $rk4v.16b                       @ GHASH final-1 block - mid
+	movi    $t0.8b, #0                                        @ suppress further partial tag feed in
+	.L128_enc_blocks_less_than_1:                             @ blocks left <= 1
+
+	and     $bit_length, $bit_length, #127                    @ bit_length %= 128
+	mvn     $rk10_l, xzr                                      @ rk10_l = 0xffffffffffffffff
+
+	mvn     $rk10_h, xzr                                      @ rk10_h = 0xffffffffffffffff
+	sub     $bit_length, $bit_length, #128                    @ bit_length -= 128
+
+	neg     $bit_length, $bit_length                          @ bit_length = 128 - #bits in input (in range [1,128])
+
+	and     $bit_length, $bit_length, #127                    @ bit_length %= 128
+
+	lsr     $rk10_h, $rk10_h, $bit_length                     @ rk10_h is mask for top 64b of last block
+	cmp     $bit_length, #64
+
+	csel    $input_l0, $rk10_l, $rk10_h, lt
+	csel    $input_h0, $rk10_h, xzr, lt
+
+	fmov    $ctr0d, $input_l0                                 @ ctr0b is mask for last block
+
+	fmov    $ctr0.d[1], $input_h0
+
+	and     $res1b, $res1b, $ctr0b                            @ possibly partial last block has zeroes in highest bits
+
+	rev64   $res0b, $res1b                                    @ GHASH final block
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+
+	mov     $t0d, $res0.d[1]                                  @ GHASH final block - mid
+
+	pmull   $rk3q1, $res0.1d, $h1.1d                          @ GHASH final block - low
+	ld1     { $rk0}, [$output_ptr]                            @ load existing bytes where the possibly partial last block is to be stored
+
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH final block - mid
+
+	rev     $ctr32w, $rctr32w
+
+	pmull2  $rk2q1, $res0.2d, $h1.2d                          @ GHASH final block - high
+
+	pmull   $t0.1q, $t0.1d, $h12k.1d                          @ GHASH final block - mid
+
+	eor     $acc_lb, $acc_lb, $rk3                            @ GHASH final block - low
+
+	eor     $acc_hb, $acc_hb, $rk2                            @ GHASH final block - high
+
+	eor     $acc_mb, $acc_mb, $t0.16b                         @ GHASH final block - mid
+	movi    $mod_constant.8b, #0xc2
+
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ MODULO - fold into mid
+
+	pmull   $acc_h.1q, $acc_m.1d, $mod_constant.1d            @ MODULO - mid 64b align with low
+
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+
+	bif     $res1b, $rk0, $ctr0b                              @ insert existing bytes in top end of result before storing
+
+	eor     $acc_lb, $acc_lb, $acc_hb                         @ MODULO - fold into low
+	st1     { $res1b}, [$output_ptr]                          @ store all 16B
+
+	str     $ctr32w, [$counter, #12]                          @ store the updated counter
+
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+	mov     x0, $len
+	st1     { $acc_l.16b }, [$current_tag]
+	ldp     x21, x22, [sp, #16]
+	ldp     x23, x24, [sp, #32]
+	ldp     d8, d9, [sp, #48]
+	ldp     d10, d11, [sp, #64]
+	ldp     d12, d13, [sp, #80]
+	ldp     d14, d15, [sp, #96]
+	ldp     x19, x20, [sp], #112
+	ret
+
+.L128_enc_ret:
+	mov w0, #0x0
+	ret
+.size aes_gcm_enc_128_kernel,.-aes_gcm_enc_128_kernel
+___
+
+#########################################################################################
+# size_t aes_gcm_dec_128_kernel(const unsigned char *in,
+#                               size_t len,
+#                               unsigned char *out,
+#                               const void *key,
+#                               unsigned char ivec[16],
+#                               u64 *Xi);
+#
+$code.=<<___;
+.global aes_gcm_dec_128_kernel
+.type   aes_gcm_dec_128_kernel,%function
+.align  4
+aes_gcm_dec_128_kernel:
+	cbz     x1, .L128_dec_ret
+	stp     x19, x20, [sp, #-112]!
+	mov     x16, x4
+	mov     x8, x5
+	stp     x21, x22, [sp, #16]
+	stp     x23, x24, [sp, #32]
+	stp     d8, d9, [sp, #48]
+	stp     d10, d11, [sp, #64]
+	stp     d12, d13, [sp, #80]
+	stp     d14, d15, [sp, #96]
+
+	lsr     $main_end_input_ptr, $bit_length, #3              @ byte_len
+	mov     $len, $main_end_input_ptr
+	ldp     $ctr96_b64x, $ctr96_t32x, [$counter]              @ ctr96_b64, ctr96_t32
+
+	sub     $main_end_input_ptr, $main_end_input_ptr, #1      @ byte_len - 1
+	ldr     $rk0q, [$cc, #0]                                  @ load rk0
+
+	and     $main_end_input_ptr, $main_end_input_ptr, #0xffffffffffffffc0 @ number of bytes to be processed in main loop (at least 1 byte must be handled by tail)
+	ld1     { $ctr0b}, [$counter]                             @ special case vector load initial counter so we can start first AES block as quickly as possible
+
+	ldr     $h2q, [$current_tag, #64]                         @ load h2l | h2h
+	ext     $h2b, $h2b, $h2b, #8
+
+	lsr     $rctr32x, $ctr96_t32x, #32
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 2
+
+	ldr     $rk1q, [$cc, #16]                                 @ load rk1
+	orr     $ctr96_t32w, $ctr96_t32w, $ctr96_t32w
+	rev     $rctr32w, $rctr32w                                @ rev_ctr32
+
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 1
+	add     $rctr32w, $rctr32w, #1                            @ increment rev_ctr32
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 0
+	rev     $ctr32w, $rctr32w                                 @ CTR block 1
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 1
+	ldr     $rk2q, [$cc, #32]                                 @ load rk2
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 1
+
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 1
+	rev     $ctr32w, $rctr32w                                 @ CTR block 2
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 2
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 1
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 2
+
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 2
+	rev     $ctr32w, $rctr32w                                 @ CTR block 3
+
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 3
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 3
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 3
+
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 3
+	add     $end_input_ptr, $input_ptr, $bit_length, lsr #3   @ end_input_ptr
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 0
+	ldr     $rk3q, [$cc, #48]                                 @ load rk3
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 2
+	ldr     $rk6q, [$cc, #96]                                 @ load rk6
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 0
+	ldr     $rk7q, [$cc, #112]                                @ load rk7
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 1
+	ldr     $rk4q, [$cc, #64]                                 @ load rk4
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 0
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 1
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 2
+	ldp     $rk10_l, $rk10_h, [$cc, #160]                     @ load rk10
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 1
+	ld1     { $acc_lb}, [$current_tag]
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 3
+	ldr     $rk5q, [$cc, #80]                                 @ load rk5
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 3
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 2
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 2
+	ldr     $rk9q, [$cc, #144]                                @ load rk9
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 4
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 3
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 3
+	ldr     $h3q, [$current_tag, #80]                         @ load h3l | h3h
+	ext     $h3b, $h3b, $h3b, #8
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 4
+	ldr     $rk8q, [$cc, #128]                                @ load rk8
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 5
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 4
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 4
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 5
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 5
+	ldr     $h1q, [$current_tag, #32]                         @ load h1l | h1h
+	ext     $h1b, $h1b, $h1b, #8
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 5
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 6
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 6
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 6
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 6
+	trn1    $t0.2d,    $h1.2d,    $h2.2d                      @ h2h | h1h
+
+	ldr     $h4q, [$current_tag, #112]                        @ load h4l | h4h
+	ext     $h4b, $h4b, $h4b, #8
+	trn2    $h12k.2d,  $h1.2d,    $h2.2d                      @ h2l | h1l
+	add     $main_end_input_ptr, $main_end_input_ptr, $input_ptr
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 7
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 7
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 7
+	eor     $h12k.16b, $h12k.16b, $t0.16b                     @ h2k | h1k
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 7
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 8
+	trn2    $h34k.2d,  $h3.2d,    $h4.2d                      @ h4l | h3l
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 8
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 8
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 8
+	trn1    $acc_h.2d, $h3.2d,    $h4.2d                      @ h4h | h3h
+
+	aese    $ctr2b, $rk9                                      @ AES block 2 - round 9
+
+	aese    $ctr3b, $rk9                                      @ AES block 3 - round 9
+
+	aese    $ctr0b, $rk9                                      @ AES block 0 - round 9
+	cmp     $input_ptr, $main_end_input_ptr                   @ check if we have <= 4 blocks
+
+	aese    $ctr1b, $rk9                                      @ AES block 1 - round 9
+	eor     $h34k.16b, $h34k.16b, $acc_h.16b                  @ h4k | h3k
+	b.ge    .L128_dec_tail                                    @ handle tail
+
+	ldr     $res1q, [$input_ptr, #16]                         @ AES block 1 - load ciphertext
+
+	ldr     $res0q, [$input_ptr, #0]                          @ AES block 0 - load ciphertext
+
+	eor     $ctr1b, $res1b, $ctr1b                            @ AES block 1 - result
+	ldr     $res2q, [$input_ptr, #32]                         @ AES block 2 - load ciphertext
+
+	eor     $ctr0b, $res0b, $ctr0b                            @ AES block 0 - result
+	rev64   $res0b, $res0b                                    @ GHASH block 0
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4
+	ldr     $res3q, [$input_ptr, #48]                         @ AES block 3 - load ciphertext
+
+	rev64   $res1b, $res1b                                    @ GHASH block 1
+	add     $input_ptr, $input_ptr, #64                       @ AES input_ptr update
+	mov     $output_l1, $ctr1.d[0]                            @ AES block 1 - mov low
+
+	mov     $output_h1, $ctr1.d[1]                            @ AES block 1 - mov high
+
+	mov     $output_l0, $ctr0.d[0]                            @ AES block 0 - mov low
+	cmp     $input_ptr, $main_end_input_ptr                   @ check if we have <= 8 blocks
+
+	mov     $output_h0, $ctr0.d[1]                            @ AES block 0 - mov high
+
+	fmov    $ctr0d, $ctr96_b64x                               @ CTR block 4
+
+	fmov    $ctr0.d[1], $ctr32x                               @ CTR block 4
+	rev     $ctr32w, $rctr32w                                 @ CTR block 5
+	eor     $output_l1, $output_l1, $rk10_l                   @ AES block 1 - round 10 low
+
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 5
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 5
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 5
+
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 5
+	rev     $ctr32w, $rctr32w                                 @ CTR block 6
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 6
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 6
+
+	eor     $output_h1, $output_h1, $rk10_h                   @ AES block 1 - round 10 high
+	eor     $output_l0, $output_l0, $rk10_l                   @ AES block 0 - round 10 low
+	eor     $ctr2b, $res2b, $ctr2b                            @ AES block 2 - result
+
+	eor     $output_h0, $output_h0, $rk10_h                   @ AES block 0 - round 10 high
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES block 0 - store result
+
+	stp     $output_l1, $output_h1, [$output_ptr], #16        @ AES block 1 - store result
+	b.ge    .L128_dec_prepretail                              @ do prepretail
+
+	.L128_dec_main_loop:                                      @ main loop start
+	eor     $ctr3b, $res3b, $ctr3b                            @ AES block 4k+3 - result
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                     @ PRE 0
+	mov     $output_l2, $ctr2.d[0]                            @ AES block 4k+2 - mov low
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                          @ GHASH block 4k+1 - high
+	mov     $output_h2, $ctr2.d[1]                            @ AES block 4k+2 - mov high
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 0
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 4k+6
+
+	rev64   $res2b, $res2b                                    @ GHASH block 4k+2
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 4k+6
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+7
+
+	mov     $output_l3, $ctr3.d[0]                            @ AES block 4k+3 - mov low
+	eor     $res0b, $res0b, $acc_lb                           @ PRE 1
+	mov     $t3d, $res1.d[1]                                  @ GHASH block 4k+1 - mid
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 1
+	rev64   $res3b, $res3b                                    @ GHASH block 4k+3
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                          @ GHASH block 4k+1 - low
+	mov     $output_h3, $ctr3.d[1]                            @ AES block 4k+3 - mov high
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+7
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH block 4k - low
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 4k+7
+	eor     $t3.8b, $t3.8b, $res1.8b                          @ GHASH block 4k+1 - mid
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 2
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 4k+7
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 0
+	mov     $acc_md, $h34k.d[1]                               @ GHASH block 4k - mid
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH block 4k - high
+	eor     $acc_lb, $acc_lb, $t2.16b                         @ GHASH block 4k+1 - low
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                          @ GHASH block 4k+3 - low
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 3
+	mov     $t0d, $res0.d[1]                                  @ GHASH block 4k - mid
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 0
+	eor     $acc_hb, $acc_hb, $t1.16b                         @ GHASH block 4k+1 - high
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 0
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                          @ GHASH block 4k+2 - low
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH block 4k - mid
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 1
+	eor     $output_l3, $output_l3, $rk10_l                   @ AES block 4k+3 - round 10 low
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                          @ GHASH block 4k+1 - mid
+	eor     $output_h2, $output_h2, $rk10_h                   @ AES block 4k+2 - round 10 high
+	mov     $t6d, $res2.d[1]                                  @ GHASH block 4k+2 - mid
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 1
+	eor     $acc_lb, $acc_lb, $t5.16b                         @ GHASH block 4k+2 - low
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                      @ GHASH block 4k - mid
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 2
+	eor     $t6.8b, $t6.8b, $res2.8b                          @ GHASH block 4k+2 - mid
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 2
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 4
+	eor     $acc_mb, $acc_mb, $t3.16b                         @ GHASH block 4k+1 - mid
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                          @ GHASH block 4k+2 - high
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 3
+	ins     $t6.d[1], $t6.d[0]                                @ GHASH block 4k+2 - mid
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                          @ GHASH block 4k+3 - high
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 1
+	mov     $t9d, $res3.d[1]                                  @ GHASH block 4k+3 - mid
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 4
+	eor     $acc_hb, $acc_hb, $t4.16b                         @ GHASH block 4k+2 - high
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                          @ GHASH block 4k+2 - mid
+	eor     $output_h3, $output_h3, $rk10_h                   @ AES block 4k+3 - round 10 high
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 2
+	eor     $t9.8b, $t9.8b, $res3.8b                          @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 5
+	eor     $output_l2, $output_l2, $rk10_l                   @ AES block 4k+2 - round 10 low
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 5
+	movi    $mod_constant.8b, #0xc2
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 3
+	eor     $acc_lb, $acc_lb, $t8.16b                         @ GHASH block 4k+3 - low
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 6
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 6
+	eor     $acc_mb, $acc_mb, $t6.16b                         @ GHASH block 4k+2 - mid
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 4
+	stp     $output_l2, $output_h2, [$output_ptr], #16        @ AES block 4k+2 - store result
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                          @ GHASH block 4k+3 - mid
+	eor     $acc_hb, $acc_hb, $t7.16b                         @ GHASH block 4k+3 - high
+	ldr     $res0q, [$input_ptr, #0]                          @ AES block 4k+4 - load ciphertext
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 7
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+7
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 7
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 5
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 8
+	stp     $output_l3, $output_h3, [$output_ptr], #16        @ AES block 4k+3 - store result
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 8
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 3
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+8
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+	ldr     $res1q, [$input_ptr, #16]                         @ AES block 4k+5 - load ciphertext
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	aese    $ctr0b, $rk9                                      @ AES block 4k+4 - round 9
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+8
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 4
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr1b, $rk9                                      @ AES block 4k+5 - round 9
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 6
+	eor     $ctr0b, $res0b, $ctr0b                            @ AES block 4k+4 - result
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 5
+	ldr     $res2q, [$input_ptr, #32]                         @ AES block 4k+6 - load ciphertext
+
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+8
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+	eor     $ctr1b, $res1b, $ctr1b                            @ AES block 4k+5 - result
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 7
+	ldr     $res3q, [$input_ptr, #48]                         @ AES block 4k+3 - load ciphertext
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 6
+	add     $input_ptr, $input_ptr, #64                       @ AES input_ptr update
+
+	rev64   $res1b, $res1b                                    @ GHASH block 4k+5
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ MODULO - fold into mid
+	mov     $output_h0, $ctr0.d[1]                            @ AES block 4k+4 - mov high
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 8
+	mov     $output_l0, $ctr0.d[0]                            @ AES block 4k+4 - mov low
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 7
+	fmov    $ctr0d, $ctr96_b64x                               @ CTR block 4k+8
+
+	pmull   $mod_constant.1q, $acc_m.1d, $mod_constant.1d     @ MODULO - mid 64b align with low
+	fmov    $ctr0.d[1], $ctr32x                               @ CTR block 4k+8
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+9
+
+	aese    $ctr2b, $rk9                                      @ AES block 4k+6 - round 9
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+9
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 8
+	eor     $output_h0, $output_h0, $rk10_h                   @ AES block 4k+4 - round 10 high
+
+	eor     $acc_lb, $acc_lb, $mod_constant.16b               @ MODULO - fold into low
+	mov     $output_h1, $ctr1.d[1]                            @ AES block 4k+5 - mov high
+	eor     $output_l0, $output_l0, $rk10_l                   @ AES block 4k+4 - round 10 low
+
+	eor     $ctr2b, $res2b, $ctr2b                            @ AES block 4k+6 - result
+	mov     $output_l1, $ctr1.d[0]                            @ AES block 4k+5 - mov low
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+9
+
+	aese    $ctr3b, $rk9                                      @ AES block 4k+7 - round 9
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 4k+9
+	cmp     $input_ptr, $main_end_input_ptr                   @ LOOP CONTROL
+
+	rev64   $res0b, $res0b                                    @ GHASH block 4k+4
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 4k+9
+
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+10
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+10
+
+	eor     $output_h1, $output_h1, $rk10_h                   @ AES block 4k+5 - round 10 high
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES block 4k+4 - store result
+
+	eor     $output_l1, $output_l1, $rk10_l                   @ AES block 4k+5 - round 10 low
+	stp     $output_l1, $output_h1, [$output_ptr], #16        @ AES block 4k+5 - store result
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+10
+	b.lt    L128_dec_main_loop
+
+	.L128_dec_prepretail:                                     @ PREPRETAIL
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                     @ PRE 0
+	mov     $output_l2, $ctr2.d[0]                            @ AES block 4k+2 - mov low
+	mov     $t3d, $res1.d[1]                                  @ GHASH block 4k+1 - mid
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 0
+	eor     $ctr3b, $res3b, $ctr3b                            @ AES block 4k+3 - result
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 0
+	mov     $output_h2, $ctr2.d[1]                            @ AES block 4k+2 - mov high
+
+	eor     $res0b, $res0b, $acc_lb                           @ PRE 1
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 4k+6
+	rev64   $res2b, $res2b                                    @ GHASH block 4k+2
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 1
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 4k+6
+
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+7
+	mov     $output_l3, $ctr3.d[0]                            @ AES block 4k+3 - mov low
+	eor     $t3.8b, $t3.8b, $res1.8b                          @ GHASH block 4k+1 - mid
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH block 4k - low
+	mov     $acc_md, $h34k.d[1]                               @ GHASH block 4k - mid
+	mov     $output_h3, $ctr3.d[1]                            @ AES block 4k+3 - mov high
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 1
+	mov     $t6d, $res2.d[1]                                  @ GHASH block 4k+2 - mid
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 2
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+7
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                          @ GHASH block 4k+1 - low
+	mov     $t0d, $res0.d[1]                                  @ GHASH block 4k - mid
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 4k+7
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 0
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 4k+7
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                          @ GHASH block 4k+1 - mid
+	eor     $t6.8b, $t6.8b, $res2.8b                          @ GHASH block 4k+2 - mid
+
+	rev64   $res3b, $res3b                                    @ GHASH block 4k+3
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 1
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH block 4k - mid
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH block 4k - high
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 0
+	ins     $t6.d[1], $t6.d[0]                                @ GHASH block 4k+2 - mid
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                          @ GHASH block 4k+1 - high
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                      @ GHASH block 4k - mid
+	eor     $acc_lb, $acc_lb, $t2.16b                         @ GHASH block 4k+1 - low
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                          @ GHASH block 4k+3 - low
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                          @ GHASH block 4k+2 - mid
+	eor     $acc_hb, $acc_hb, $t1.16b                         @ GHASH block 4k+1 - high
+
+	eor     $acc_mb, $acc_mb, $t3.16b                         @ GHASH block 4k+1 - mid
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                          @ GHASH block 4k+3 - high
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                          @ GHASH block 4k+2 - high
+	mov     $t9d, $res3.d[1]                                  @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 2
+	eor     $acc_mb, $acc_mb, $t6.16b                         @ GHASH block 4k+2 - mid
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                          @ GHASH block 4k+2 - low
+
+	eor     $acc_hb, $acc_hb, $t4.16b                         @ GHASH block 4k+2 - high
+	movi    $mod_constant.8b, #0xc2
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 1
+	eor     $t9.8b, $t9.8b, $res3.8b                          @ GHASH block 4k+3 - mid
+
+	eor     $acc_lb, $acc_lb, $t5.16b                         @ GHASH block 4k+2 - low
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 2
+	eor     $acc_hb, $acc_hb, $t7.16b                         @ GHASH block 4k+3 - high
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 2
+	eor     $output_l3, $output_l3, $rk10_l                   @ AES block 4k+3 - round 10 low
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                          @ GHASH block 4k+3 - mid
+	eor     $output_l2, $output_l2, $rk10_l                   @ AES block 4k+2 - round 10 low
+	eor     $acc_lb, $acc_lb, $t8.16b                         @ GHASH block 4k+3 - low
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 3
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 3
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 3
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 4
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 4
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 3
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 5
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 5
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 4
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 4
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 6
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 5
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 5
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 7
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 6
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 6
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 8
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ MODULO - fold into mid
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 6
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 7
+
+	aese    $ctr1b, $rk9                                      @ AES block 4k+5 - round 9
+
+	pmull   $mod_constant.1q, $acc_m.1d, $mod_constant.1d     @ MODULO - mid 64b align with low
+	eor     $output_h3, $output_h3, $rk10_h                   @ AES block 4k+3 - round 10 high
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 7
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 7
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 8
+	eor     $acc_lb, $acc_lb, $mod_constant.16b               @ MODULO - fold into low
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 8
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 8
+	eor     $output_h2, $output_h2, $rk10_h                   @ AES block 4k+2 - round 10 high
+
+	aese    $ctr0b, $rk9                                      @ AES block 4k+4 - round 9
+	stp     $output_l2, $output_h2, [$output_ptr], #16        @ AES block 4k+2 - store result
+
+	aese    $ctr2b, $rk9                                      @ AES block 4k+6 - round 9
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+7
+	stp     $output_l3, $output_h3, [$output_ptr], #16        @ AES block 4k+3 - store result
+
+	aese    $ctr3b, $rk9                                      @ AES block 4k+7 - round 9
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+	.L128_dec_tail:                                           @ TAIL
+
+	sub     $main_end_input_ptr, $end_input_ptr, $input_ptr   @ main_end_input_ptr is number of bytes left to process
+	ld1     { $res1b}, [$input_ptr], #16                      @ AES block 4k+4 - load ciphertext
+
+	eor     $ctr0b, $res1b, $ctr0b                            @ AES block 4k+4 - result
+
+	mov     $output_h0, $ctr0.d[1]                            @ AES block 4k+4 - mov high
+
+	mov     $output_l0, $ctr0.d[0]                            @ AES block 4k+4 - mov low
+
+	cmp     $main_end_input_ptr, #48
+
+	eor     $output_h0, $output_h0, $rk10_h                   @ AES block 4k+4 - round 10 high
+
+	ext     $t0.16b, $acc_lb, $acc_lb, #8                     @ prepare final partial tag
+	eor     $output_l0, $output_l0, $rk10_l                   @ AES block 4k+4 - round 10 low
+	b.gt    .L128_dec_blocks_more_than_3
+
+	mov     $ctr3b, $ctr2b
+	sub     $rctr32w, $rctr32w, #1
+	movi    $acc_l.8b, #0
+
+	movi    $acc_h.8b, #0
+	mov     $ctr2b, $ctr1b
+
+	movi    $acc_m.8b, #0
+	cmp     $main_end_input_ptr, #32
+	b.gt     .L128_dec_blocks_more_than_2
+
+	cmp     $main_end_input_ptr, #16
+
+	mov     $ctr3b, $ctr1b
+	sub     $rctr32w, $rctr32w, #1
+	b.gt    .L128_dec_blocks_more_than_1
+
+	sub     $rctr32w, $rctr32w, #1
+	b       .L128_dec_blocks_less_than_1
+	.L128_dec_blocks_more_than_3:                             @ blocks left >  3
+	rev64   $res0b, $res1b                                    @ GHASH final-3 block
+	ld1     { $res1b}, [$input_ptr], #16                      @ AES final-2 block - load ciphertext
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+
+	mov     $acc_md, $h34k.d[1]                               @ GHASH final-3 block - mid
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES final-3 block  - store result
+	eor     $ctr0b, $res1b, $ctr1b                            @ AES final-2 block - result
+
+	mov     $rk4d, $res0.d[1]                                 @ GHASH final-3 block - mid
+	mov     $output_h0, $ctr0.d[1]                            @ AES final-2 block - mov high
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH final-3 block - low
+	mov     $output_l0, $ctr0.d[0]                            @ AES final-2 block - mov low
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH final-3 block - high
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                      @ GHASH final-3 block - mid
+
+	movi    $t0.8b, #0                                        @ suppress further partial tag feed in
+	eor     $output_h0, $output_h0, $rk10_h                   @ AES final-2 block - round 10 high
+
+	pmull   $acc_m.1q, $rk4v.1d, $acc_m.1d                    @ GHASH final-3 block - mid
+	eor     $output_l0, $output_l0, $rk10_l                   @ AES final-2 block - round 10 low
+	.L128_dec_blocks_more_than_2:                             @ blocks left >  2
+
+	rev64   $res0b, $res1b                                    @ GHASH final-2 block
+	ld1     { $res1b}, [$input_ptr], #16                      @ AES final-1 block - load ciphertext
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+
+	eor     $ctr0b, $res1b, $ctr2b                            @ AES final-1 block - result
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES final-2 block  - store result
+
+	mov     $rk4d, $res0.d[1]                                 @ GHASH final-2 block - mid
+
+	pmull   $rk3q1, $res0.1d, $h3.1d                          @ GHASH final-2 block - low
+
+	pmull2  $rk2q1, $res0.2d, $h3.2d                          @ GHASH final-2 block - high
+	mov     $output_l0, $ctr0.d[0]                            @ AES final-1 block - mov low
+
+	mov     $output_h0, $ctr0.d[1]                            @ AES final-1 block - mov high
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                      @ GHASH final-2 block - mid
+
+	movi    $t0.8b, #0                                        @ suppress further partial tag feed in
+
+	pmull   $rk4v.1q, $rk4v.1d, $h34k.1d                      @ GHASH final-2 block - mid
+
+	eor     $output_l0, $output_l0, $rk10_l                   @ AES final-1 block - round 10 low
+	eor     $acc_lb, $acc_lb, $rk3                            @ GHASH final-2 block - low
+
+	eor     $acc_hb, $acc_hb, $rk2                            @ GHASH final-2 block - high
+
+	eor     $acc_mb, $acc_mb, $rk4v.16b                       @ GHASH final-2 block - mid
+	eor     $output_h0, $output_h0, $rk10_h                   @ AES final-1 block - round 10 high
+	.L128_dec_blocks_more_than_1:                             @ blocks left >  1
+
+	rev64   $res0b, $res1b                                    @ GHASH final-1 block
+
+	ld1     { $res1b}, [$input_ptr], #16                      @ AES final block - load ciphertext
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+
+	mov     $rk4d, $res0.d[1]                                 @ GHASH final-1 block - mid
+
+	eor     $ctr0b, $res1b, $ctr3b                            @ AES final block - result
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                      @ GHASH final-1 block - mid
+
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES final-1 block  - store result
+	mov     $output_l0, $ctr0.d[0]                            @ AES final block - mov low
+
+	mov     $output_h0, $ctr0.d[1]                            @ AES final block - mov high
+	ins     $rk4v.d[1], $rk4v.d[0]                            @ GHASH final-1 block - mid
+
+	pmull   $rk3q1, $res0.1d, $h2.1d                          @ GHASH final-1 block - low
+
+	pmull2  $rk2q1, $res0.2d, $h2.2d                          @ GHASH final-1 block - high
+
+	pmull2  $rk4v.1q, $rk4v.2d, $h12k.2d                      @ GHASH final-1 block - mid
+	movi    $t0.8b, #0                                        @ suppress further partial tag feed in
+
+	eor     $acc_lb, $acc_lb, $rk3                            @ GHASH final-1 block - low
+
+	eor     $acc_hb, $acc_hb, $rk2                            @ GHASH final-1 block - high
+	eor     $output_h0, $output_h0, $rk10_h                   @ AES final block - round 10 high
+
+	eor     $output_l0, $output_l0, $rk10_l                   @ AES final block - round 10 low
+	eor     $acc_mb, $acc_mb, $rk4v.16b                       @ GHASH final-1 block - mid
+	.L128_dec_blocks_less_than_1:                                            @ blocks left <= 1
+
+	mvn     $rk10_h, xzr                                      @ rk10_h = 0xffffffffffffffff
+	and     $bit_length, $bit_length, #127                    @ bit_length %= 128
+
+	mvn     $rk10_l, xzr                                      @ rk10_l = 0xffffffffffffffff
+	sub     $bit_length, $bit_length, #128                    @ bit_length -= 128
+
+	neg     $bit_length, $bit_length                          @ bit_length = 128 - #bits in input (in range [1,128])
+
+	and     $bit_length, $bit_length, #127                    @ bit_length %= 128
+
+	lsr     $rk10_h, $rk10_h, $bit_length                     @ rk10_h is mask for top 64b of last block
+	cmp     $bit_length, #64
+
+	csel    $ctr96_b64x, $rk10_h, xzr, lt
+	csel    $ctr32x, $rk10_l, $rk10_h, lt
+
+	fmov    $ctr0d, $ctr32x                                   @ ctr0b is mask for last block
+
+	mov     $ctr0.d[1], $ctr96_b64x
+
+	and     $res1b, $res1b, $ctr0b                            @ possibly partial last block has zeroes in highest bits
+
+	rev64   $res0b, $res1b                                    @ GHASH final block
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+
+	ldp     $end_input_ptr, $main_end_input_ptr, [$output_ptr] @ load existing bytes we need to not overwrite
+
+	and     $output_h0, $output_h0, $ctr96_b64x
+
+	pmull2  $rk2q1, $res0.2d, $h1.2d                          @ GHASH final block - high
+	mov     $t0d, $res0.d[1]                                  @ GHASH final block - mid
+
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH final block - mid
+	eor     $acc_hb, $acc_hb, $rk2                            @ GHASH final block - high
+
+	pmull   $t0.1q, $t0.1d, $h12k.1d                          @ GHASH final block - mid
+
+	pmull   $rk3q1, $res0.1d, $h1.1d                          @ GHASH final block - low
+	bic     $end_input_ptr, $end_input_ptr, $ctr32x           @ mask out low existing bytes
+	and     $output_l0, $output_l0, $ctr32x
+
+	rev     $ctr32w, $rctr32w
+
+	eor     $acc_mb, $acc_mb, $t0.16b                         @ GHASH final block - mid
+	movi    $mod_constant.8b, #0xc2
+
+	eor     $acc_lb, $acc_lb, $rk3                            @ GHASH final block - low
+
+	bic     $main_end_input_ptr, $main_end_input_ptr, $ctr96_b64x   @ mask out high existing bytes
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	orr     $output_l0, $output_l0, $end_input_ptr
+	str     $ctr32w, [$counter, #12]                          @ store the updated counter
+
+	orr     $output_h0, $output_h0, $main_end_input_ptr
+	stp     $output_l0, $output_h0, [$output_ptr]
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ MODULO - fold into mid
+
+	pmull   $mod_constant.1q, $acc_m.1d, $mod_constant.1d     @ MODULO - mid 64b align with low
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+
+	eor     $acc_lb, $acc_lb, $mod_constant.16b               @ MODULO - fold into low
+
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+	mov     x0, $len
+	st1     { $acc_l.16b }, [$current_tag]
+
+	ldp     x21, x22, [sp, #16]
+	ldp     x23, x24, [sp, #32]
+	ldp     d8, d9, [sp, #48]
+	ldp     d10, d11, [sp, #64]
+	ldp     d12, d13, [sp, #80]
+	ldp     d14, d15, [sp, #96]
+	ldp     x19, x20, [sp], #112
+	ret
+
+	.L128_dec_ret:
+	mov w0, #0x0
+	ret
+.size aes_gcm_dec_128_kernel,.-aes_gcm_dec_128_kernel
+___
+}
+
+{
+my ($end_input_ptr,$main_end_input_ptr,$input_l0,$input_h0)=map("x$_",(4..7));
+my ($input_l1,$input_h1,$input_l2,$input_h2,$input_l3,$input_h3)=map("x$_",(19..24));
+my ($output_l1,$output_h1,$output_l2,$output_h2,$output_l3,$output_h3)=map("x$_",(19..24));
+my ($output_l0,$output_h0)=map("x$_",(6..7));
+
+my $ctr32w="w9";
+my ($ctr32x,$ctr96_b64x,$ctr96_t32x,$rctr32x,$rk12_l,$rk12_h,$len)=map("x$_",(9..15));
+my ($ctr96_t32w,$rctr32w)=map("w$_",(11..12));
+
+my ($ctr0b,$ctr1b,$ctr2b,$ctr3b,$res0b,$res1b,$res2b,$res3b)=map("v$_.16b",(0..7));
+my ($ctr0,$ctr1,$ctr2,$ctr3,$res0,$res1,$res2,$res3)=map("v$_",(0..7));
+my ($ctr0d,$ctr1d,$ctr2d,$ctr3d,$res0d,$res1d,$res2d,$res3d)=map("d$_",(0..7));
+my ($res0q,$res1q,$res2q,$res3q)=map("q$_",(4..7));
+
+my ($acc_hb,$acc_mb,$acc_lb)=map("v$_.16b",(9..11));
+my ($acc_h,$acc_m,$acc_l)=map("v$_",(9..11));
+my ($acc_hd,$acc_md,$acc_ld)=map("d$_",(9..11));
+
+my ($h1,$h2,$h3,$h4,$h12k,$h34k)=map("v$_",(12..17));
+my ($h1q,$h2q,$h3q,$h4q)=map("q$_",(12..15));
+my ($h1b,$h2b,$h3b,$h4b)=map("v$_.16b",(12..15));
+
+my $t0="v8";
+my $t0d="d8";
+my $t3="v4";
+my $t3d="d4";
+
+my ($t1,$t2)=map("v$_",(30..31));
+my ($t1d,$t2d)=map("d$_",(30..31));
+
+my $t4="v30";
+my $t4d="d30";
+my $t5="v8";
+my $t5d="d8";
+my $t6="v31";
+my $t6d="d31";
+
+my $t7="v5";
+my $t7d="d5";
+my $t8="v6";
+my $t8d="d6";
+my $t9="v30";
+my $t9d="d30";
+
+my ($ctr_t0,$ctr_t1,$ctr_t2,$ctr_t3)=map("v$_",(4..7));
+my ($ctr_t0d,$ctr_t1d,$ctr_t2d,$ctr_t3d)=map("d$_",(4..7));
+my ($ctr_t0b,$ctr_t1b,$ctr_t2b,$ctr_t3b)=map("v$_.16b",(4..7));
+
+my $mod_constantd="d8";
+my $mod_constant="v8";
+my $mod_t="v31";
+
+my ($rk0,$rk1,$rk2,$rk3,$rk4,$rk5,$rk6,$rk7,$rk8,$rk9,$rk10,$rk11)=map("v$_.16b",(18..29));
+my ($rk0q,$rk1q,$rk2q,$rk3q,$rk4q,$rk5q,$rk6q,$rk7q,$rk8q,$rk9q,$rk10q,$rk11q)=map("q$_",(18..29));
+my $rk2q1="v20.1q";
+my $rk3q1="v21.1q";
+my $rk4v="v22";
+my $rk4d="d22";
+
+#########################################################################################
+# size_t aes_gcm_enc_192_kernel(const unsigned char *in,
+#                               size_t len,
+#                               unsigned char *out,
+#                               const void *key,
+#                               unsigned char ivec[16],
+#                               u64 *Xi);
+#
+$code.=<<___;
+.global aes_gcm_enc_192_kernel
+.type   aes_gcm_enc_192_kernel,%function
+.align  4
+aes_gcm_enc_192_kernel:
+	cbz     x1, .L192_enc_ret
+	stp     x19, x20, [sp, #-112]!
+	mov     x16, x4
+	mov     x8, x5
+	stp     x21, x22, [sp, #16]
+	stp     x23, x24, [sp, #32]
+	stp     d8, d9, [sp, #48]
+	stp     d10, d11, [sp, #64]
+	stp     d12, d13, [sp, #80]
+	stp     d14, d15, [sp, #96]
+
+	ldp     $ctr96_b64x, $ctr96_t32x, [$counter]             @ ctr96_b64, ctr96_t32
+
+	ldr     $rk5q, [$cc, #80]                                @ load rk5
+
+	ldr     $rk4q, [$cc, #64]                                @ load rk4
+
+	ldr     $rk8q, [$cc, #128]                               @ load rk8
+
+	lsr     $rctr32x, $ctr96_t32x, #32
+	ldr     $rk6q, [$cc, #96]                                @ load rk6
+	orr     $ctr96_t32w, $ctr96_t32w, $ctr96_t32w
+
+	ldr     $rk7q, [$cc, #112]                               @ load rk7
+	rev     $rctr32w, $rctr32w                               @ rev_ctr32
+
+	add     $rctr32w, $rctr32w, #1                           @ increment rev_ctr32
+	fmov    $ctr3d, $ctr96_b64x                              @ CTR block 3
+
+	rev     $ctr32w, $rctr32w                                @ CTR block 1
+	add     $rctr32w, $rctr32w, #1                           @ CTR block 1
+	fmov    $ctr1d, $ctr96_b64x                              @ CTR block 1
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32           @ CTR block 1
+	ld1     { $ctr0b}, [$counter]                            @ special case vector load initial counter so we can start first AES block as quickly as possible
+
+	fmov    $ctr1.d[1], $ctr32x                              @ CTR block 1
+	rev     $ctr32w, $rctr32w                                @ CTR block 2
+	add     $rctr32w, $rctr32w, #1                           @ CTR block 2
+
+	fmov    $ctr2d, $ctr96_b64x                              @ CTR block 2
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32           @ CTR block 2
+
+	fmov    $ctr2.d[1], $ctr32x                              @ CTR block 2
+	rev     $ctr32w, $rctr32w                                @ CTR block 3
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32           @ CTR block 3
+	ldr     $rk0q, [$cc, #0]                                 @ load rk0
+
+	fmov    $ctr3.d[1], $ctr32x                              @ CTR block 3
+
+	ldr     $rk3q, [$cc, #48]                                @ load rk3
+
+	ldp     $rk12_l, $rk12_h, [$cc, #192]                    @ load rk12
+
+	ldr     $rk1q, [$cc, #16]                                @ load rk1
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b         @ AES block 0 - round 0
+	ld1     { $acc_lb}, [$current_tag]
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b         @ AES block 3 - round 0
+	ldr     $rk11q, [$cc, #176]                              @ load rk11
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b         @ AES block 1 - round 0
+	ldr     $h4q, [$current_tag, #112]                       @ load h4l | h4h
+	ext     $h4b, $h4b, $h4b, #8
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b         @ AES block 2 - round 0
+	ldr     $rk2q, [$cc, #32]                                @ load rk2
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b         @ AES block 0 - round 1
+	ldr     $rk10q, [$cc, #160]                              @ load rk10
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b         @ AES block 1 - round 1
+	ldr     $h1q, [$current_tag, #32]                        @ load h1l | h1h
+	ext     $h1b, $h1b, $h1b, #8
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b         @ AES block 2 - round 1
+	ldr     $rk9q, [$cc, #144]                               @ load rk9
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b         @ AES block 3 - round 1
+	ldr     $h3q, [$current_tag, #80]                        @ load h3l | h3h
+	ext     $h3b, $h3b, $h3b, #8
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b         @ AES block 0 - round 2
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b         @ AES block 2 - round 2
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b         @ AES block 3 - round 2
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b         @ AES block 0 - round 3
+	trn1    $acc_h.2d, $h3.2d,    $h4.2d                     @ h4h | h3h
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b         @ AES block 2 - round 3
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b         @ AES block 1 - round 2
+	trn2    $h34k.2d,  $h3.2d,    $h4.2d                     @ h4l | h3l
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b         @ AES block 0 - round 4
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b         @ AES block 3 - round 3
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b         @ AES block 1 - round 3
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b         @ AES block 0 - round 5
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b         @ AES block 2 - round 4
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b         @ AES block 1 - round 4
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b         @ AES block 0 - round 6
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b         @ AES block 3 - round 4
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b         @ AES block 2 - round 5
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b         @ AES block 1 - round 5
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b         @ AES block 3 - round 5
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b         @ AES block 2 - round 6
+	ldr     $h2q, [$current_tag, #64]                        @ load h2l | h2h
+	ext     $h2b, $h2b, $h2b, #8
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b         @ AES block 1 - round 6
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b         @ AES block 3 - round 6
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b         @ AES block 0 - round 7
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b         @ AES block 1 - round 7
+	trn2    $h12k.2d,  $h1.2d,    $h2.2d                     @ h2l | h1l
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b         @ AES block 3 - round 7
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b         @ AES block 0 - round 8
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b         @ AES block 2 - round 7
+	trn1    $t0.2d,    $h1.2d,    $h2.2d                     @ h2h | h1h
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b         @ AES block 1 - round 8
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b         @ AES block 3 - round 8
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b         @ AES block 2 - round 8
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b         @ AES block 0 - round 9
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b         @ AES block 3 - round 9
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b         @ AES block 2 - round 9
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b         @ AES block 1 - round 9
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b         @ AES block 0 - round 10
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b         @ AES block 2 - round 10
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b         @ AES block 1 - round 10
+	lsr     $main_end_input_ptr, $bit_length, #3             @ byte_len
+	mov     $len, $main_end_input_ptr
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b         @ AES block 3 - round 10
+	sub     $main_end_input_ptr, $main_end_input_ptr, #1     @ byte_len - 1
+
+	eor     $h12k.16b, $h12k.16b, $t0.16b                    @ h2k | h1k
+	and     $main_end_input_ptr, $main_end_input_ptr, #0xffffffffffffffc0   @ number of bytes to be processed in main loop (at least 1 byte must be handled by tail)
+
+	eor     $h34k.16b, $h34k.16b, $acc_h.16b                 @ h4k | h3k
+
+	aese    $ctr2b, $rk11                                    @ AES block 2 - round 11
+	add     $end_input_ptr, $input_ptr, $bit_length, lsr #3  @ end_input_ptr
+	add     $main_end_input_ptr, $main_end_input_ptr, $input_ptr
+
+	aese    $ctr1b, $rk11                                    @ AES block 1 - round 11
+	cmp     $input_ptr, $main_end_input_ptr                  @ check if we have <= 4 blocks
+
+	aese    $ctr0b, $rk11                                    @ AES block 0 - round 11
+	add     $rctr32w, $rctr32w, #1                           @ CTR block 3
+
+	aese    $ctr3b, $rk11                                    @ AES block 3 - round 11
+	b.ge    .L192_enc_tail                                   @ handle tail
+
+	rev     $ctr32w, $rctr32w                                @ CTR block 4
+	ldp     $input_l0, $input_h0, [$input_ptr, #0]           @ AES block 0 - load plaintext
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32           @ CTR block 4
+	ldp     $input_l2, $input_h2, [$input_ptr, #32]          @ AES block 2 - load plaintext
+
+	ldp     $input_l3, $input_h3, [$input_ptr, #48]          @ AES block 3 - load plaintext
+
+	ldp     $input_l1, $input_h1, [$input_ptr, #16]          @ AES block 1 - load plaintext
+	add     $input_ptr, $input_ptr, #64                      @ AES input_ptr update
+	cmp     $input_ptr, $main_end_input_ptr                  @ check if we have <= 8 blocks
+
+	eor     $input_l0, $input_l0, $rk12_l                    @ AES block 0 - round 12 low
+
+	eor     $input_h0, $input_h0, $rk12_h                    @ AES block 0 - round 12 high
+	eor     $input_h2, $input_h2, $rk12_h                    @ AES block 2 - round 12 high
+	fmov    $ctr_t0d, $input_l0                              @ AES block 0 - mov low
+
+	eor     $input_h3, $input_h3, $rk12_h                    @ AES block 3 - round 12 high
+	fmov    $ctr_t0.d[1], $input_h0                          @ AES block 0 - mov high
+
+	eor     $input_l2, $input_l2, $rk12_l                    @ AES block 2 - round 12 low
+	eor     $input_l1, $input_l1, $rk12_l                    @ AES block 1 - round 12 low
+
+	fmov    $ctr_t1d, $input_l1                              @ AES block 1 - mov low
+	eor     $input_h1, $input_h1, $rk12_h                    @ AES block 1 - round 12 high
+
+	fmov    $ctr_t1.d[1], $input_h1                          @ AES block 1 - mov high
+
+	eor     $input_l3, $input_l3, $rk12_l                    @ AES block 3 - round 12 low
+	fmov    $ctr_t2d, $input_l2                              @ AES block 2 - mov low
+
+	add     $rctr32w, $rctr32w, #1                           @ CTR block 4
+	eor     $res0b, $ctr_t0b, $ctr0b                         @ AES block 0 - result
+	fmov    $ctr0d, $ctr96_b64x                              @ CTR block 4
+
+	fmov    $ctr0.d[1], $ctr32x                              @ CTR block 4
+	rev     $ctr32w, $rctr32w                                @ CTR block 5
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32           @ CTR block 5
+	add     $rctr32w, $rctr32w, #1                           @ CTR block 5
+
+	fmov    $ctr_t3d, $input_l3                              @ AES block 3 - mov low
+	st1     { $res0b}, [$output_ptr], #16                    @ AES block 0 - store result
+
+	fmov    $ctr_t2.d[1], $input_h2                          @ AES block 2 - mov high
+
+	eor     $res1b, $ctr_t1b, $ctr1b                         @ AES block 1 - result
+	fmov    $ctr1d, $ctr96_b64x                              @ CTR block 5
+	st1     { $res1b}, [$output_ptr], #16                    @ AES block 1 - store result
+
+	fmov    $ctr_t3.d[1], $input_h3                          @ AES block 3 - mov high
+
+	fmov    $ctr1.d[1], $ctr32x                              @ CTR block 5
+	rev     $ctr32w, $rctr32w                                @ CTR block 6
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32           @ CTR block 6
+
+	add     $rctr32w, $rctr32w, #1                           @ CTR block 6
+	eor     $res2b, $ctr_t2b, $ctr2b                         @ AES block 2 - result
+	fmov    $ctr2d, $ctr96_b64x                              @ CTR block 6
+
+	fmov    $ctr2.d[1], $ctr32x                              @ CTR block 6
+	rev     $ctr32w, $rctr32w                                @ CTR block 7
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32           @ CTR block 7
+	st1     { $res2b}, [$output_ptr], #16                    @ AES block 2 - store result
+
+	eor     $res3b, $ctr_t3b, $ctr3b                         @ AES block 3 - result
+	st1     { $res3b}, [$output_ptr], #16                    @ AES block 3 - store result
+	b.ge    .L192_enc_prepretail                             @ do prepretail
+
+	.L192_enc_main_loop:                                     @ main loop start
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 0
+	rev64   $res1b, $res1b                                   @ GHASH block 4k+1 (t0 and t1 free)
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 0
+	ldp     $input_l1, $input_h1, [$input_ptr, #16]          @ AES block 4k+5 - load plaintext
+
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                    @ PRE 0
+	fmov    $ctr3d, $ctr96_b64x                              @ CTR block 4k+3
+	rev64   $res0b, $res0b                                   @ GHASH block 4k (only t0 is free)
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 1
+	fmov    $ctr3.d[1], $ctr32x                              @ CTR block 4k+3
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                         @ GHASH block 4k+1 - high
+	rev64   $res3b, $res3b                                   @ GHASH block 4k+3 (t0, t1, t2 and t3 free)
+	ldp     $input_l2, $input_h2, [$input_ptr, #32]          @ AES block 4k+6 - load plaintext
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 0
+	ldp     $input_l3, $input_h3, [$input_ptr, #48]          @ AES block 4k+3 - load plaintext
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                         @ GHASH block 4k+1 - low
+	eor     $res0b, $res0b, $acc_lb                          @ PRE 1
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 1
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 1
+	rev64   $res2b, $res2b                                   @ GHASH block 4k+2 (t0, t1, and t2 free)
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 0
+	eor     $input_h3, $input_h3, $rk12_h                    @ AES block 4k+3 - round 12 high
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                      @ GHASH block 4k - low
+	mov     $t0d, $res0.d[1]                                 @ GHASH block 4k - mid
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 2
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 1
+	eor     $input_l2, $input_l2, $rk12_l                    @ AES block 4k+6 - round 12 low
+
+	eor     $t0.8b, $t0.8b, $res0.8b                         @ GHASH block 4k - mid
+	eor     $acc_lb, $acc_lb, $t2.16b                        @ GHASH block 4k+1 - low
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 3
+	eor     $input_l1, $input_l1, $rk12_l                    @ AES block 4k+5 - round 12 low
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 2
+	mov     $t6d, $res2.d[1]                                 @ GHASH block 4k+2 - mid
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                      @ GHASH block 4k - high
+	mov     $t3d, $res1.d[1]                                 @ GHASH block 4k+1 - mid
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 2
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 3
+
+	mov     $acc_md, $h34k.d[1]                              @ GHASH block 4k - mid
+	eor     $acc_hb, $acc_hb, $t1.16b                        @ GHASH block 4k+1 - high
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 2
+	eor     $t6.8b, $t6.8b, $res2.8b                         @ GHASH block 4k+2 - mid
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                         @ GHASH block 4k+2 - high
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 4
+	eor     $t3.8b, $t3.8b, $res1.8b                         @ GHASH block 4k+1 - mid
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 3
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                         @ GHASH block 4k+3 - high
+	eor     $input_h1, $input_h1, $rk12_h                    @ AES block 4k+5 - round 12 high
+	ins     $t6.d[1], $t6.d[0]                               @ GHASH block 4k+2 - mid
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 5
+	add     $rctr32w, $rctr32w, #1                           @ CTR block 4k+3
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 4
+	eor     $acc_hb, $acc_hb, $t4.16b                        @ GHASH block 4k+2 - high
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                         @ GHASH block 4k+1 - mid
+	eor     $input_h2, $input_h2, $rk12_h                    @ AES block 4k+6 - round 12 high
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                         @ GHASH block 4k+2 - mid
+	eor     $input_l3, $input_l3, $rk12_l                    @ AES block 4k+3 - round 12 low
+	mov     $t9d, $res3.d[1]                                 @ GHASH block 4k+3 - mid
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                     @ GHASH block 4k - mid
+	rev     $ctr32w, $rctr32w                                @ CTR block 4k+8
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                         @ GHASH block 4k+2 - low
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32           @ CTR block 4k+8
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 3
+	eor     $t9.8b, $t9.8b, $res3.8b                         @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 4
+	ldp     $input_l0, $input_h0, [$input_ptr, #0]           @ AES block 4k+4 - load plaintext
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 6
+	eor     $acc_lb, $acc_lb, $t5.16b                        @ GHASH block 4k+2 - low
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 4
+	add     $input_ptr, $input_ptr, #64                      @ AES input_ptr update
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 5
+	movi    $mod_constant.8b, #0xc2
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                         @ GHASH block 4k+3 - low
+	eor     $input_h0, $input_h0, $rk12_h                    @ AES block 4k+4 - round 12 high
+	eor     $acc_mb, $acc_mb, $t3.16b                        @ GHASH block 4k+1 - mid
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 5
+	eor     $input_l0, $input_l0, $rk12_l                    @ AES block 4k+4 - round 12 low
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 6
+	shl     $mod_constantd, $mod_constantd, #56              @ mod_constant
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 5
+	eor     $acc_hb, $acc_hb, $t7.16b                        @ GHASH block 4k+3 - high
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 7
+	fmov    $ctr_t1d, $input_l1                              @ AES block 4k+5 - mov low
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 7
+	eor     $acc_mb, $acc_mb, $t6.16b                        @ GHASH block 4k+2 - mid
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 6
+	fmov    $ctr_t1.d[1], $input_h1                          @ AES block 4k+5 - mov high
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 8
+	eor     $acc_lb, $acc_lb, $t8.16b                        @ GHASH block 4k+3 - low
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                         @ GHASH block 4k+3 - mid
+	cmp     $input_ptr, $main_end_input_ptr                  @ LOOP CONTROL
+	fmov    $ctr_t0d, $input_l0                              @ AES block 4k+4 - mov low
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 6
+	fmov    $ctr_t0.d[1], $input_h0                          @ AES block 4k+4 - mov high
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 8
+	fmov    $ctr_t3d, $input_l3                              @ AES block 4k+3 - mov low
+
+	eor     $acc_mb, $acc_mb, $t9.16b                        @ GHASH block 4k+3 - mid
+	eor     $t9.16b, $acc_lb, $acc_hb                        @ MODULO - karatsuba tidy up
+	add     $rctr32w, $rctr32w, #1                           @ CTR block 4k+8
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 7
+	fmov    $ctr_t3.d[1], $input_h3                          @ AES block 4k+3 - mov high
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d           @ MODULO - top 64b align with mid
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                    @ MODULO - other top alignment
+	fmov    $ctr_t2d, $input_l2                              @ AES block 4k+6 - mov low
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 7
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 9
+	eor     $acc_mb, $acc_mb, $t9.16b                        @ MODULO - karatsuba tidy up
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 8
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 8
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 9
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 10
+	eor     $acc_mb, $acc_mb, $mod_t.16b                     @ MODULO - fold into mid
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 9
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 9
+
+	aese    $ctr0b, $rk11                                    @ AES block 4k+4 - round 11
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 10
+	eor     $acc_mb, $acc_mb, $acc_hb                        @ MODULO - fold into mid
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 10
+
+	eor     $res0b, $ctr_t0b, $ctr0b                         @ AES block 4k+4 - result
+	fmov    $ctr0d, $ctr96_b64x                              @ CTR block 4k+8
+
+	aese    $ctr1b, $rk11                                    @ AES block 4k+5 - round 11
+	fmov    $ctr0.d[1], $ctr32x                              @ CTR block 4k+8
+	rev     $ctr32w, $rctr32w                                @ CTR block 4k+9
+
+	pmull   $acc_h.1q, $acc_m.1d, $mod_constant.1d           @ MODULO - mid 64b align with low
+	fmov    $ctr_t2.d[1], $input_h2                          @ AES block 4k+6 - mov high
+	st1     { $res0b}, [$output_ptr], #16                    @ AES block 4k+4 - store result
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 10
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32           @ CTR block 4k+9
+
+	eor     $res1b, $ctr_t1b, $ctr1b                         @ AES block 4k+5 - result
+	add     $rctr32w, $rctr32w, #1                           @ CTR block 4k+9
+	fmov    $ctr1d, $ctr96_b64x                              @ CTR block 4k+9
+
+	aese    $ctr2b, $rk11                                    @ AES block 4k+6 - round 11
+	fmov    $ctr1.d[1], $ctr32x                              @ CTR block 4k+9
+	rev     $ctr32w, $rctr32w                                @ CTR block 4k+10
+
+	add     $rctr32w, $rctr32w, #1                           @ CTR block 4k+10
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                    @ MODULO - other mid alignment
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32           @ CTR block 4k+10
+
+	st1     { $res1b}, [$output_ptr], #16                    @ AES block 4k+5 - store result
+	eor     $acc_lb, $acc_lb, $acc_hb                        @ MODULO - fold into low
+
+	aese    $ctr3b, $rk11                                    @ AES block 4k+7 - round 11
+	eor     $res2b, $ctr_t2b, $ctr2b                         @ AES block 4k+6 - result
+	fmov    $ctr2d, $ctr96_b64x                              @ CTR block 4k+10
+
+	st1     { $res2b}, [$output_ptr], #16                    @ AES block 4k+6 - store result
+	fmov    $ctr2.d[1], $ctr32x                              @ CTR block 4k+10
+	rev     $ctr32w, $rctr32w                                @ CTR block 4k+11
+
+	eor     $acc_lb, $acc_lb, $acc_mb                        @ MODULO - fold into low
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32           @ CTR block 4k+11
+
+	eor     $res3b, $ctr_t3b, $ctr3b                         @ AES block 4k+3 - result
+	st1     { $res3b}, [$output_ptr], #16                    @ AES block 4k+3 - store result
+	b.lt    .L192_enc_main_loop
+
+	.L192_enc_prepretail:                                    @ PREPRETAIL
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 0
+	rev64   $res0b, $res0b                                   @ GHASH block 4k (only t0 is free)
+
+	fmov    $ctr3d, $ctr96_b64x                              @ CTR block 4k+3
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                    @ PRE 0
+	add     $rctr32w, $rctr32w, #1                           @ CTR block 4k+3
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 0
+	rev64   $res1b, $res1b                                   @ GHASH block 4k+1 (t0 and t1 free)
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 0
+
+	fmov    $ctr3.d[1], $ctr32x                              @ CTR block 4k+3
+	eor     $res0b, $res0b, $acc_lb                          @ PRE 1
+	mov     $acc_md, $h34k.d[1]                              @ GHASH block 4k - mid
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 1
+	rev64   $res2b, $res2b                                   @ GHASH block 4k+2 (t0, t1, and t2 free)
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                         @ GHASH block 4k+1 - high
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                      @ GHASH block 4k - low
+	mov     $t0d, $res0.d[1]                                 @ GHASH block 4k - mid
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                         @ GHASH block 4k+1 - low
+	rev64   $res3b, $res3b                                   @ GHASH block 4k+3 (t0, t1, t2 and t3 free)
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                      @ GHASH block 4k - high
+
+	eor     $t0.8b, $t0.8b, $res0.8b                         @ GHASH block 4k - mid
+	mov     $t3d, $res1.d[1]                                 @ GHASH block 4k+1 - mid
+
+	eor     $acc_lb, $acc_lb, $t2.16b                        @ GHASH block 4k+1 - low
+	mov     $t6d, $res2.d[1]                                 @ GHASH block 4k+2 - mid
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 0
+	eor     $acc_hb, $acc_hb, $t1.16b                        @ GHASH block 4k+1 - high
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                         @ GHASH block 4k+2 - high
+
+	eor     $t3.8b, $t3.8b, $res1.8b                         @ GHASH block 4k+1 - mid
+	eor     $t6.8b, $t6.8b, $res2.8b                         @ GHASH block 4k+2 - mid
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 1
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 1
+	eor     $acc_hb, $acc_hb, $t4.16b                        @ GHASH block 4k+2 - high
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 1
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 2
+	mov     $t9d, $res3.d[1]                                 @ GHASH block 4k+3 - mid
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                         @ GHASH block 4k+3 - high
+	ins     $t6.d[1], $t6.d[0]                               @ GHASH block 4k+2 - mid
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 2
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                     @ GHASH block 4k - mid
+	eor     $t9.8b, $t9.8b, $res3.8b                         @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 3
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                         @ GHASH block 4k+2 - mid
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                         @ GHASH block 4k+1 - mid
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                         @ GHASH block 4k+3 - mid
+	eor     $acc_hb, $acc_hb, $t7.16b                        @ GHASH block 4k+3 - high
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                         @ GHASH block 4k+2 - low
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 3
+	eor     $acc_mb, $acc_mb, $t3.16b                        @ GHASH block 4k+1 - mid
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 2
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 2
+	eor     $acc_lb, $acc_lb, $t5.16b                        @ GHASH block 4k+2 - low
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 4
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 3
+	eor     $acc_mb, $acc_mb, $t6.16b                        @ GHASH block 4k+2 - mid
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 3
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                         @ GHASH block 4k+3 - low
+	movi    $mod_constant.8b, #0xc2
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 4
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 4
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 4
+	eor     $acc_mb, $acc_mb, $t9.16b                        @ GHASH block 4k+3 - mid
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 5
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 5
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 5
+	eor     $acc_lb, $acc_lb, $t8.16b                        @ GHASH block 4k+3 - low
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 5
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 6
+	eor     $acc_mb, $acc_mb, $acc_hb                        @ karatsuba tidy up
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 6
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 6
+	shl     $mod_constantd, $mod_constantd, #56              @ mod_constant
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 7
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 7
+	eor     $acc_mb, $acc_mb, $acc_lb
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 7
+
+	pmull   $t1.1q, $acc_h.1d, $mod_constant.1d
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 6
+	ext     $acc_hb, $acc_hb, $acc_hb, #8
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 8
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 8
+	eor     $acc_mb, $acc_mb, $t1.16b
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 7
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 8
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 9
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 8
+	eor     $acc_mb, $acc_mb, $acc_hb
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 9
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 9
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 9
+
+	pmull   $t1.1q, $acc_m.1d, $mod_constant.1d
+
+	ext     $acc_mb, $acc_mb, $acc_mb, #8
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b         @ AES block 4k+7 - round 10
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b         @ AES block 4k+4 - round 10
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b         @ AES block 4k+6 - round 10
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b         @ AES block 4k+5 - round 10
+	eor     $acc_lb, $acc_lb, $t1.16b
+
+	aese    $ctr0b, $rk11                                    @ AES block 4k+4 - round 11
+
+	aese    $ctr3b, $rk11                                    @ AES block 4k+7 - round 11
+
+	aese    $ctr2b, $rk11                                    @ AES block 4k+6 - round 11
+
+	aese    $ctr1b, $rk11                                    @ AES block 4k+5 - round 11
+	eor     $acc_lb, $acc_lb, $acc_mb
+	.L192_enc_tail:                                          @ TAIL
+
+	sub     $main_end_input_ptr, $end_input_ptr, $input_ptr  @ main_end_input_ptr is number of bytes left to process
+	ldp     $input_l0, $input_h0, [$input_ptr], #16          @ AES block 4k+4 - load plaintext
+
+	eor     $input_l0, $input_l0, $rk12_l                    @ AES block 4k+4 - round 12 low
+	eor     $input_h0, $input_h0, $rk12_h                    @ AES block 4k+4 - round 12 high
+
+	fmov    $ctr_t0d, $input_l0                              @ AES block 4k+4 - mov low
+
+	fmov    $ctr_t0.d[1], $input_h0                          @ AES block 4k+4 - mov high
+	cmp     $main_end_input_ptr, #48
+
+	eor     $res1b, $ctr_t0b, $ctr0b                         @ AES block 4k+4 - result
+
+	ext     $t0.16b, $acc_lb, $acc_lb, #8                    @ prepare final partial tag
+	b.gt    .L192_enc_blocks_more_than_3
+
+	sub     $rctr32w, $rctr32w, #1
+	movi    $acc_m.8b, #0
+
+	mov     $ctr3b, $ctr2b
+	movi    $acc_h.8b, #0
+	cmp     $main_end_input_ptr, #32
+
+	mov     $ctr2b, $ctr1b
+	movi    $acc_l.8b, #0
+	b.gt    .L192_enc_blocks_more_than_2
+
+	sub     $rctr32w, $rctr32w, #1
+
+	mov     $ctr3b, $ctr1b
+	cmp     $main_end_input_ptr, #16
+	b.gt    .L192_enc_blocks_more_than_1
+
+	sub     $rctr32w, $rctr32w, #1
+	b       .L192_enc_blocks_less_than_1
+	.L192_enc_blocks_more_than_3:                            @ blocks left >  3
+	st1     { $res1b}, [$output_ptr], #16                    @ AES final-3 block  - store result
+
+	ldp     $input_l0, $input_h0, [$input_ptr], #16          @ AES final-2 block - load input low & high
+
+	rev64   $res0b, $res1b                                   @ GHASH final-3 block
+
+	eor     $input_l0, $input_l0, $rk12_l                    @ AES final-2 block - round 12 low
+	eor     $res0b, $res0b, $t0.16b                          @ feed in partial tag
+
+	eor     $input_h0, $input_h0, $rk12_h                    @ AES final-2 block - round 12 high
+	fmov    $res1d, $input_l0                                @ AES final-2 block - mov low
+
+	fmov    $res1.d[1], $input_h0                            @ AES final-2 block - mov high
+
+	mov     $rk4d, $res0.d[1]                                @ GHASH final-3 block - mid
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                      @ GHASH final-3 block - low
+
+	mov     $acc_md, $h34k.d[1]                              @ GHASH final-3 block - mid
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                     @ GHASH final-3 block - mid
+
+	movi    $t0.8b, #0                                       @ suppress further partial tag feed in
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                      @ GHASH final-3 block - high
+
+	pmull   $acc_m.1q, $rk4v.1d, $acc_m.1d                   @ GHASH final-3 block - mid
+	eor     $res1b, $res1b, $ctr1b                           @ AES final-2 block - result
+	.L192_enc_blocks_more_than_2:                            @ blocks left >  2
+
+	st1     { $res1b}, [$output_ptr], #16                    @ AES final-2 block - store result
+
+	rev64   $res0b, $res1b                                   @ GHASH final-2 block
+	ldp     $input_l0, $input_h0, [$input_ptr], #16          @ AES final-1 block - load input low & high
+
+	eor     $res0b, $res0b, $t0.16b                          @ feed in partial tag
+
+	eor     $input_h0, $input_h0, $rk12_h                    @ AES final-1 block - round 12 high
+
+	pmull2  $rk2q1, $res0.2d, $h3.2d                         @ GHASH final-2 block - high
+	mov     $rk4d, $res0.d[1]                                @ GHASH final-2 block - mid
+
+	pmull   $rk3q1, $res0.1d, $h3.1d                         @ GHASH final-2 block - low
+	eor     $input_l0, $input_l0, $rk12_l                    @ AES final-1 block - round 12 low
+
+	fmov    $res1d, $input_l0                                @ AES final-1 block - mov low
+
+	fmov    $res1.d[1], $input_h0                            @ AES final-1 block - mov high
+	eor     $acc_hb, $acc_hb, $rk2                           @ GHASH final-2 block - high
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                     @ GHASH final-2 block - mid
+
+	eor     $acc_lb, $acc_lb, $rk3                           @ GHASH final-2 block - low
+
+	pmull   $rk4v.1q, $rk4v.1d, $h34k.1d                     @ GHASH final-2 block - mid
+
+	movi    $t0.8b, #0                                       @ suppress further partial tag feed in
+
+	eor     $res1b, $res1b, $ctr2b                           @ AES final-1 block - result
+
+	eor     $acc_mb, $acc_mb, $rk4v.16b                      @ GHASH final-2 block - mid
+	.L192_enc_blocks_more_than_1:                            @ blocks left >  1
+
+	st1     { $res1b}, [$output_ptr], #16                    @ AES final-1 block - store result
+
+	ldp     $input_l0, $input_h0, [$input_ptr], #16          @ AES final block - load input low & high
+
+	rev64   $res0b, $res1b                                   @ GHASH final-1 block
+
+	eor     $input_l0, $input_l0, $rk12_l                    @ AES final block - round 12 low
+	eor     $res0b, $res0b, $t0.16b                          @ feed in partial tag
+	movi    $t0.8b, #0                                       @ suppress further partial tag feed in
+
+	mov     $rk4d, $res0.d[1]                                @ GHASH final-1 block - mid
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                     @ GHASH final-1 block - mid
+	eor     $input_h0, $input_h0, $rk12_h                    @ AES final block - round 12 high
+	fmov    $res1d, $input_l0                                @ AES final block - mov low
+
+	pmull2  $rk2q1, $res0.2d, $h2.2d                         @ GHASH final-1 block - high
+	fmov    $res1.d[1], $input_h0                            @ AES final block - mov high
+
+	ins     $rk4v.d[1], $rk4v.d[0]                           @ GHASH final-1 block - mid
+
+	eor     $acc_hb, $acc_hb, $rk2                           @ GHASH final-1 block - high
+
+	pmull   $rk3q1, $res0.1d, $h2.1d                         @ GHASH final-1 block - low
+
+	pmull2  $rk4v.1q, $rk4v.2d, $h12k.2d                     @ GHASH final-1 block - mid
+
+	eor     $res1b, $res1b, $ctr3b                           @ AES final block - result
+
+	eor     $acc_lb, $acc_lb, $rk3                           @ GHASH final-1 block - low
+
+	eor     $acc_mb, $acc_mb, $rk4v.16b                      @ GHASH final-1 block - mid
+	.L192_enc_blocks_less_than_1:                            @ blocks left <= 1
+
+	ld1     { $rk0}, [$output_ptr]                           @ load existing bytes where the possibly partial last block is to be stored
+	rev     $ctr32w, $rctr32w
+	and     $bit_length, $bit_length, #127                   @ bit_length %= 128
+
+	sub     $bit_length, $bit_length, #128                   @ bit_length -= 128
+	mvn     $rk12_h, xzr                                     @ rk12_h = 0xffffffffffffffff
+
+	neg     $bit_length, $bit_length                         @ bit_length = 128 - #bits in input (in range [1,128])
+	mvn     $rk12_l, xzr                                     @ rk12_l = 0xffffffffffffffff
+
+	and     $bit_length, $bit_length, #127                   @ bit_length %= 128
+
+	lsr     $rk12_h, $rk12_h, $bit_length                    @ rk12_h is mask for top 64b of last block
+	cmp     $bit_length, #64
+
+	csel    $input_l0, $rk12_l, $rk12_h, lt
+	csel    $input_h0, $rk12_h, xzr, lt
+
+	fmov    $ctr0d, $input_l0                                @ ctr0b is mask for last block
+
+	fmov    $ctr0.d[1], $input_h0
+
+	and     $res1b, $res1b, $ctr0b                           @ possibly partial last block has zeroes in highest bits
+
+	rev64   $res0b, $res1b                                   @ GHASH final block
+
+	eor     $res0b, $res0b, $t0.16b                          @ feed in partial tag
+
+	mov     $t0d, $res0.d[1]                                 @ GHASH final block - mid
+
+	pmull   $rk3q1, $res0.1d, $h1.1d                         @ GHASH final block - low
+
+	pmull2  $rk2q1, $res0.2d, $h1.2d                         @ GHASH final block - high
+
+	eor     $t0.8b, $t0.8b, $res0.8b                         @ GHASH final block - mid
+
+	eor     $acc_lb, $acc_lb, $rk3                           @ GHASH final block - low
+
+	eor     $acc_hb, $acc_hb, $rk2                           @ GHASH final block - high
+
+	pmull   $t0.1q, $t0.1d, $h12k.1d                         @ GHASH final block - mid
+
+	eor     $acc_mb, $acc_mb, $t0.16b                        @ GHASH final block - mid
+	movi    $mod_constant.8b, #0xc2
+
+	eor     $t9.16b, $acc_lb, $acc_hb                        @ MODULO - karatsuba tidy up
+
+	shl     $mod_constantd, $mod_constantd, #56              @ mod_constant
+
+	bif     $res1b, $rk0, $ctr0b                             @ insert existing bytes in top end of result before storing
+
+	eor     $acc_mb, $acc_mb, $t9.16b                        @ MODULO - karatsuba tidy up
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d           @ MODULO - top 64b align with mid
+
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                    @ MODULO - other top alignment
+
+	eor     $acc_mb, $acc_mb, $mod_t.16b                     @ MODULO - fold into mid
+
+	eor     $acc_mb, $acc_mb, $acc_hb                        @ MODULO - fold into mid
+
+	pmull   $acc_h.1q, $acc_m.1d, $mod_constant.1d           @ MODULO - mid 64b align with low
+
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                    @ MODULO - other mid alignment
+
+	eor     $acc_lb, $acc_lb, $acc_hb                        @ MODULO - fold into low
+	str     $ctr32w, [$counter, #12]                         @ store the updated counter
+
+	st1     { $res1b}, [$output_ptr]                         @ store all 16B
+
+	eor     $acc_lb, $acc_lb, $acc_mb                        @ MODULO - fold into low
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+	mov     x0, $len
+	st1     { $acc_l.16b }, [$current_tag]
+
+	ldp     x21, x22, [sp, #16]
+	ldp     x23, x24, [sp, #32]
+	ldp     d8, d9, [sp, #48]
+	ldp     d10, d11, [sp, #64]
+	ldp     d12, d13, [sp, #80]
+	ldp     d14, d15, [sp, #96]
+	ldp     x19, x20, [sp], #112
+	ret
+
+.L192_enc_ret:
+	mov w0, #0x0
+	ret
+.size aes_gcm_enc_192_kernel,.-aes_gcm_enc_192_kernel
+___
+
+#########################################################################################
+# size_t aes_gcm_dec_192_kernel(const unsigned char *in,
+#                               size_t len,
+#                               unsigned char *out,
+#                               const void *key,
+#                               unsigned char ivec[16],
+#                               u64 *Xi);
+#
+$code.=<<___;
+.global aes_gcm_dec_192_kernel
+.type   aes_gcm_dec_192_kernel,%function
+.align  4
+aes_gcm_dec_192_kernel:
+	cbz     x1, .L192_dec_ret
+	stp     x19, x20, [sp, #-112]!
+	mov     x16, x4
+	mov     x8, x5
+	stp     x21, x22, [sp, #16]
+	stp     x23, x24, [sp, #32]
+	stp     d8, d9, [sp, #48]
+	stp     d10, d11, [sp, #64]
+	stp     d12, d13, [sp, #80]
+	stp     d14, d15, [sp, #96]
+
+	add     $end_input_ptr, $input_ptr, $bit_length, lsr #3   @ end_input_ptr
+	ldp     $ctr96_b64x, $ctr96_t32x, [$counter]              @ ctr96_b64, ctr96_t32
+
+	ld1     { $ctr0b}, [$counter]                             @ special case vector load initial counter so we can start first AES block as quickly as possible
+
+	ldr     $rk0q, [$cc, #0]                                  @ load rk0
+
+	lsr     $main_end_input_ptr, $bit_length, #3              @ byte_len
+	mov     $len, $main_end_input_ptr
+	ldr     $rk2q, [$cc, #32]                                 @ load rk2
+
+	lsr     $rctr32x, $ctr96_t32x, #32
+	orr     $ctr96_t32w, $ctr96_t32w, $ctr96_t32w
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 3
+
+	rev     $rctr32w, $rctr32w                                @ rev_ctr32
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 1
+
+	add     $rctr32w, $rctr32w, #1                            @ increment rev_ctr32
+	ldr     $rk1q, [$cc, #16]                                 @ load rk1
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 0
+	rev     $ctr32w, $rctr32w                                 @ CTR block 1
+
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 1
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 1
+	ldr     $rk3q, [$cc, #48]                                 @ load rk3
+
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 1
+	rev     $ctr32w, $rctr32w                                 @ CTR block 2
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 2
+
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 2
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 2
+
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 2
+	rev     $ctr32w, $rctr32w                                 @ CTR block 3
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 1
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 3
+
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 3
+
+	ldr     $rk8q, [$cc, #128]                                @ load rk8
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 2
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 0
+	ldr     $rk11q, [$cc, #176]                               @ load rk11
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 0
+	ldr     $h4q, [$current_tag, #112]                        @ load h4l | h4h
+	ext     $h4b, $h4b, $h4b, #8
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 0
+	ldr     $h2q, [$current_tag, #64]                         @ load h2l | h2h
+	ext     $h2b, $h2b, $h2b, #8
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 1
+	ldr     $h3q, [$current_tag, #80]                         @ load h3l | h3h
+	ext     $h3b, $h3b, $h3b, #8
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 1
+	ldp     $rk12_l, $rk12_h, [$cc, #192]                     @ load rk12
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 1
+	ldr     $h1q, [$current_tag, #32]                         @ load h1l | h1h
+	ext     $h1b, $h1b, $h1b, #8
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 2
+	ldr     $rk10q, [$cc, #160]                               @ load rk10
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 3
+	ldr     $rk9q, [$cc, #144]                                @ load rk9
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 2
+	ldr     $rk7q, [$cc, #112]                                @ load rk7
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 2
+	ldr     $rk4q, [$cc, #64]                                 @ load rk4
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 3
+	ld1     { $acc_lb}, [$current_tag]
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 3
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 3
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 3
+	trn1    $acc_h.2d, $h3.2d,    $h4.2d                      @ h4h | h3h
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 4
+	ldr     $rk5q, [$cc, #80]                                 @ load rk5
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 4
+	trn2    $h34k.2d,  $h3.2d,    $h4.2d                      @ h4l | h3l
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 4
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 4
+	trn2    $h12k.2d,  $h1.2d,    $h2.2d                      @ h2l | h1l
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 5
+	ldr     $rk6q, [$cc, #96]                                 @ load rk6
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 5
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 5
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 5
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 6
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 6
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 6
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 7
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 7
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 7
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 6
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 8
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 8
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 7
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 9
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 9
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 8
+	sub     $main_end_input_ptr, $main_end_input_ptr, #1      @ byte_len - 1
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 8
+	and     $main_end_input_ptr, $main_end_input_ptr, #0xffffffffffffffc0    @ number of bytes to be processed in main loop (at least 1 byte must be handled by tail)
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 10
+	add     $main_end_input_ptr, $main_end_input_ptr, $input_ptr
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 9
+	cmp     $input_ptr, $main_end_input_ptr                   @ check if we have <= 4 blocks
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 9
+	trn1    $t0.2d,    $h1.2d,    $h2.2d                      @ h2h | h1h
+
+	aese    $ctr3b, $rk11                                     @ AES block 3 - round 11
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 10
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 10
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 10
+	eor     $h12k.16b, $h12k.16b, $t0.16b                     @ h2k | h1k
+
+	aese    $ctr2b, $rk11                                     @ AES block 2 - round 11
+
+	aese    $ctr1b, $rk11                                     @ AES block 1 - round 11
+	eor     $h34k.16b, $h34k.16b, $acc_h.16b                  @ h4k | h3k
+
+	aese    $ctr0b, $rk11                                     @ AES block 0 - round 11
+	b.ge    .L192_dec_tail                                    @ handle tail
+
+	ldr     $res1q, [$input_ptr, #16]                         @ AES block 1 - load ciphertext
+
+	ldr     $res0q, [$input_ptr, #0]                          @ AES block 0 - load ciphertext
+
+	eor     $ctr1b, $res1b, $ctr1b                            @ AES block 1 - result
+
+	eor     $ctr0b, $res0b, $ctr0b                            @ AES block 0 - result
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4
+	ldr     $res3q, [$input_ptr, #48]                         @ AES block 3 - load ciphertext
+
+	ldr     $res2q, [$input_ptr, #32]                         @ AES block 2 - load ciphertext
+
+	mov     $output_l1, $ctr1.d[0]                            @ AES block 1 - mov low
+
+	mov     $output_h1, $ctr1.d[1]                            @ AES block 1 - mov high
+
+	mov     $output_l0, $ctr0.d[0]                            @ AES block 0 - mov low
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4
+
+	mov     $output_h0, $ctr0.d[1]                            @ AES block 0 - mov high
+	rev64   $res0b, $res0b                                    @ GHASH block 0
+	add     $input_ptr, $input_ptr, #64                       @ AES input_ptr update
+
+	fmov    $ctr0d, $ctr96_b64x                               @ CTR block 4
+	rev64   $res1b, $res1b                                    @ GHASH block 1
+	cmp     $input_ptr, $main_end_input_ptr                   @ check if we have <= 8 blocks
+
+	eor     $output_l1, $output_l1, $rk12_l                   @ AES block 1 - round 12 low
+	fmov    $ctr0.d[1], $ctr32x                               @ CTR block 4
+	rev     $ctr32w, $rctr32w                                 @ CTR block 5
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 5
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 5
+	eor     $output_h1, $output_h1, $rk12_h                   @ AES block 1 - round 12 high
+
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 5
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 5
+	eor     $output_l0, $output_l0, $rk12_l                   @ AES block 0 - round 12 low
+
+	rev     $ctr32w, $rctr32w                                 @ CTR block 6
+	eor     $output_h0, $output_h0, $rk12_h                   @ AES block 0 - round 12 high
+
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES block 0 - store result
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 6
+
+	stp     $output_l1, $output_h1, [$output_ptr], #16        @ AES block 1 - store result
+
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 6
+	eor     $ctr2b, $res2b, $ctr2b                            @ AES block 2 - result
+	b.ge    .L192_dec_prepretail                              @ do prepretail
+
+	.L192_dec_main_loop:                                      @ main loop start
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 0
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                     @ PRE 0
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                          @ GHASH block 4k+1 - low
+	mov     $output_l2, $ctr2.d[0]                            @ AES block 4k+2 - mov low
+
+	mov     $output_h2, $ctr2.d[1]                            @ AES block 4k+2 - mov high
+	eor     $ctr3b, $res3b, $ctr3b                            @ AES block 4k+3 - result
+	rev64   $res3b, $res3b                                    @ GHASH block 4k+3
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 1
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 4k+6
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 0
+	eor     $res0b, $res0b, $acc_lb                           @ PRE 1
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                          @ GHASH block 4k+1 - high
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 4k+6
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 2
+	mov     $output_h3, $ctr3.d[1]                            @ AES block 4k+3 - mov high
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 1
+	mov     $output_l3, $ctr3.d[0]                            @ AES block 4k+3 - mov low
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH block 4k - high
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 4k+7
+	mov     $t0d, $res0.d[1]                                  @ GHASH block 4k - mid
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH block 4k - low
+	mov     $acc_md, $h34k.d[1]                               @ GHASH block 4k - mid
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+7
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 0
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+7
+
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 4k+7
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH block 4k - mid
+	mov     $t3d, $res1.d[1]                                  @ GHASH block 4k+1 - mid
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 3
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 2
+	eor     $output_h2, $output_h2, $rk12_h                   @ AES block 4k+2 - round 12 high
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 1
+	eor     $t3.8b, $t3.8b, $res1.8b                          @ GHASH block 4k+1 - mid
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                      @ GHASH block 4k - mid
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 0
+	rev64   $res2b, $res2b                                    @ GHASH block 4k+2
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 2
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                          @ GHASH block 4k+1 - mid
+	eor     $acc_lb, $acc_lb, $t2.16b                         @ GHASH block 4k+1 - low
+	eor     $output_l2, $output_l2, $rk12_l                   @ AES block 4k+2 - round 12 low
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 4
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 3
+
+	eor     $acc_mb, $acc_mb, $t3.16b                         @ GHASH block 4k+1 - mid
+	mov     $t6d, $res2.d[1]                                  @ GHASH block 4k+2 - mid
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 1
+	eor     $acc_hb, $acc_hb, $t1.16b                         @ GHASH block 4k+1 - high
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 4
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                          @ GHASH block 4k+2 - high
+	eor     $t6.8b, $t6.8b, $res2.8b                          @ GHASH block 4k+2 - mid
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                          @ GHASH block 4k+2 - low
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 5
+
+	eor     $acc_hb, $acc_hb, $t4.16b                         @ GHASH block 4k+2 - high
+	mov     $t9d, $res3.d[1]                                  @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 5
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                          @ GHASH block 4k+3 - high
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 2
+	eor     $t9.8b, $t9.8b, $res3.8b                          @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 6
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 6
+	ins     $t6.d[1], $t6.d[0]                                @ GHASH block 4k+2 - mid
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 3
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                          @ GHASH block 4k+3 - mid
+	eor     $acc_lb, $acc_lb, $t5.16b                         @ GHASH block 4k+2 - low
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 7
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                          @ GHASH block 4k+2 - mid
+	eor     $acc_hb, $acc_hb, $t7.16b                         @ GHASH block 4k+3 - high
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 7
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 8
+	movi    $mod_constant.8b, #0xc2
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                          @ GHASH block 4k+3 - low
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 8
+	eor     $acc_mb, $acc_mb, $t6.16b                         @ GHASH block 4k+2 - mid
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 3
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 9
+	eor     $acc_lb, $acc_lb, $t8.16b                         @ GHASH block 4k+3 - low
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 4
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 4
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ GHASH block 4k+3 - mid
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 10
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 9
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 5
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 5
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 10
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 6
+	ldr     $res2q, [$input_ptr, #32]                         @ AES block 4k+6 - load ciphertext
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 6
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+	ldr     $res3q, [$input_ptr, #48]                         @ AES block 4k+7 - load ciphertext
+	eor     $output_l3, $output_l3, $rk12_l                   @ AES block 4k+3 - round 12 low
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 7
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	aese    $ctr0b, $rk11                                     @ AES block 4k+4 - round 11
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+7
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 7
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 8
+	ldr     $res0q, [$input_ptr, #0]                          @ AES block 4k+4 - load ciphertext
+
+	aese    $ctr1b, $rk11                                     @ AES block 4k+5 - round 11
+	ldr     $res1q, [$input_ptr, #16]                         @ AES block 4k+5 - load ciphertext
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+8
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 8
+	stp     $output_l2, $output_h2, [$output_ptr], #16        @ AES block 4k+2 - store result
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 9
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ MODULO - fold into mid
+
+	add     $input_ptr, $input_ptr, #64                       @ AES input_ptr update
+	cmp     $input_ptr, $main_end_input_ptr                   @ LOOP CONTROL
+
+	eor     $ctr0b, $res0b, $ctr0b                            @ AES block 4k+4 - result
+	eor     $output_h3, $output_h3, $rk12_h                   @ AES block 4k+3 - round 12 high
+	eor     $ctr1b, $res1b, $ctr1b                            @ AES block 4k+5 - result
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 10
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+8
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 9
+
+	pmull   $mod_constant.1q, $acc_m.1d, $mod_constant.1d     @ MODULO - mid 64b align with low
+	mov     $output_l1, $ctr1.d[0]                            @ AES block 4k+5 - mov low
+
+	mov     $output_l0, $ctr0.d[0]                            @ AES block 4k+4 - mov low
+	stp     $output_l3, $output_h3, [$output_ptr], #16        @ AES block 4k+3 - store result
+	rev64   $res1b, $res1b                                    @ GHASH block 4k+5
+
+	aese    $ctr2b, $rk11                                     @ AES block 4k+6 - round 11
+	mov     $output_h0, $ctr0.d[1]                            @ AES block 4k+4 - mov high
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 10
+	mov     $output_h1, $ctr1.d[1]                            @ AES block 4k+5 - mov high
+
+	fmov    $ctr0d, $ctr96_b64x                               @ CTR block 4k+8
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+8
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+
+	eor     $ctr2b, $res2b, $ctr2b                            @ AES block 4k+6 - result
+	fmov    $ctr0.d[1], $ctr32x                               @ CTR block 4k+8
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+9
+
+	eor     $output_l0, $output_l0, $rk12_l                   @ AES block 4k+4 - round 12 low
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+9
+	eor     $acc_lb, $acc_lb, $mod_constant.16b               @ MODULO - fold into low
+
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 4k+9
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+9
+	eor     $output_l1, $output_l1, $rk12_l                   @ AES block 4k+5 - round 12 low
+
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 4k+9
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+10
+	eor     $output_h1, $output_h1, $rk12_h                   @ AES block 4k+5 - round 12 high
+
+	eor     $output_h0, $output_h0, $rk12_h                   @ AES block 4k+4 - round 12 high
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES block 4k+4 - store result
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+10
+	rev64   $res0b, $res0b                                    @ GHASH block 4k+4
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+10
+
+	aese    $ctr3b, $rk11                                     @ AES block 4k+7 - round 11
+	stp     $output_l1, $output_h1, [$output_ptr], #16        @ AES block 4k+5 - store result
+	b.lt    .L192_dec_main_loop
+
+	.L192_dec_prepretail:                                     @ PREPRETAIL
+	mov     $output_h2, $ctr2.d[1]                            @ AES block 4k+2 - mov high
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                     @ PRE 0
+	eor     $ctr3b, $res3b, $ctr3b                            @ AES block 4k+3 - result
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 0
+	mov     $output_l2, $ctr2.d[0]                            @ AES block 4k+2 - mov low
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 0
+	mov     $acc_md, $h34k.d[1]                               @ GHASH block 4k - mid
+
+	eor     $res0b, $res0b, $acc_lb                           @ PRE 1
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 4k+6
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 1
+	mov     $output_l3, $ctr3.d[0]                            @ AES block 4k+3 - mov low
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 1
+	mov     $output_h3, $ctr3.d[1]                            @ AES block 4k+3 - mov high
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH block 4k - low
+	mov     $t0d, $res0.d[1]                                  @ GHASH block 4k - mid
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 4k+7
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 2
+	rev64   $res2b, $res2b                                    @ GHASH block 4k+2
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH block 4k - high
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 4k+6
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+7
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+7
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH block 4k - mid
+	mov     $t3d, $res1.d[1]                                  @ GHASH block 4k+1 - mid
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                          @ GHASH block 4k+1 - low
+	eor     $output_h3, $output_h3, $rk12_h                   @ AES block 4k+3 - round 12 high
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 4k+7
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 2
+	eor     $output_l2, $output_l2, $rk12_l                   @ AES block 4k+2 - round 12 low
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                          @ GHASH block 4k+1 - high
+	eor     $output_h2, $output_h2, $rk12_h                   @ AES block 4k+2 - round 12 high
+	eor     $t3.8b, $t3.8b, $res1.8b                          @ GHASH block 4k+1 - mid
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                      @ GHASH block 4k - mid
+	eor     $output_l3, $output_l3, $rk12_l                   @ AES block 4k+3 - round 12 low
+	stp     $output_l2, $output_h2, [$output_ptr], #16        @ AES block 4k+2 - store result
+
+	rev64   $res3b, $res3b                                    @ GHASH block 4k+3
+	stp     $output_l3, $output_h3, [$output_ptr], #16        @ AES block 4k+3 - store result
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 0
+	eor     $acc_hb, $acc_hb, $t1.16b                         @ GHASH block 4k+1 - high
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                          @ GHASH block 4k+1 - mid
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+7
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                          @ GHASH block 4k+2 - high
+	eor     $acc_lb, $acc_lb, $t2.16b                         @ GHASH block 4k+1 - low
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 0
+
+	eor     $acc_mb, $acc_mb, $t3.16b                         @ GHASH block 4k+1 - mid
+	mov     $t6d, $res2.d[1]                                  @ GHASH block 4k+2 - mid
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 1
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 1
+	eor     $acc_hb, $acc_hb, $t4.16b                         @ GHASH block 4k+2 - high
+
+	eor     $t6.8b, $t6.8b, $res2.8b                          @ GHASH block 4k+2 - mid
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                          @ GHASH block 4k+2 - low
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 2
+	mov     $t9d, $res3.d[1]                                  @ GHASH block 4k+3 - mid
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 2
+	ins     $t6.d[1], $t6.d[0]                                @ GHASH block 4k+2 - mid
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                          @ GHASH block 4k+3 - low
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 3
+	eor     $t9.8b, $t9.8b, $res3.8b                          @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 3
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                          @ GHASH block 4k+2 - mid
+	eor     $acc_lb, $acc_lb, $t5.16b                         @ GHASH block 4k+2 - low
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 4
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                          @ GHASH block 4k+3 - high
+	movi    $mod_constant.8b, #0xc2
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                          @ GHASH block 4k+3 - mid
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 3
+
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+	eor     $acc_hb, $acc_hb, $t7.16b                         @ GHASH block 4k+3 - high
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 5
+	eor     $acc_mb, $acc_mb, $t6.16b                         @ GHASH block 4k+2 - mid
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 4
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+	eor     $acc_lb, $acc_lb, $t8.16b                         @ GHASH block 4k+3 - low
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 6
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 3
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ GHASH block 4k+3 - mid
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 5
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 7
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 4
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 6
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 8
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 5
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 4
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 7
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 9
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 5
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 6
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 10
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 6
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 7
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 8
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ MODULO - fold into mid
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 7
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 8
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 9
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 8
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 9
+
+	pmull   $mod_constant.1q, $acc_m.1d, $mod_constant.1d     @ MODULO - mid 64b align with low
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 9
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 10
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 10
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 10
+
+	aese    $ctr0b, $rk11
+	eor     $acc_lb, $acc_lb, $mod_constant.16b               @ MODULO - fold into low
+
+	aese    $ctr2b, $rk11
+
+	aese    $ctr1b, $rk11
+
+	aese    $ctr3b, $rk11
+
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+	.L192_dec_tail:                                           @ TAIL
+
+	sub     $main_end_input_ptr, $end_input_ptr, $input_ptr   @ main_end_input_ptr is number of bytes left to process
+	ld1     { $res1b}, [$input_ptr], #16                      @ AES block 4k+4 - load ciphertext
+
+	eor     $ctr0b, $res1b, $ctr0b                            @ AES block 4k+4 - result
+
+	mov     $output_h0, $ctr0.d[1]                            @ AES block 4k+4 - mov high
+
+	mov     $output_l0, $ctr0.d[0]                            @ AES block 4k+4 - mov low
+
+	ext     $t0.16b, $acc_lb, $acc_lb, #8                     @ prepare final partial tag
+
+	cmp     $main_end_input_ptr, #48
+
+	eor     $output_h0, $output_h0, $rk12_h                   @ AES block 4k+4 - round 12 high
+
+	eor     $output_l0, $output_l0, $rk12_l                   @ AES block 4k+4 - round 12 low
+	b.gt    .L192_dec_blocks_more_than_3
+
+	movi    $acc_l.8b, #0
+	movi    $acc_h.8b, #0
+
+	mov     $ctr3b, $ctr2b
+	mov     $ctr2b, $ctr1b
+	sub     $rctr32w, $rctr32w, #1
+
+	movi    $acc_m.8b, #0
+	cmp     $main_end_input_ptr, #32
+	b.gt    .L192_dec_blocks_more_than_2
+
+	mov     $ctr3b, $ctr1b
+	cmp     $main_end_input_ptr, #16
+	sub     $rctr32w, $rctr32w, #1
+
+	b.gt    .L192_dec_blocks_more_than_1
+
+	sub     $rctr32w, $rctr32w, #1
+	b       .L192_dec_blocks_less_than_1
+	.L192_dec_blocks_more_than_3:                             @ blocks left >  3
+	rev64   $res0b, $res1b                                    @ GHASH final-3 block
+	ld1     { $res1b}, [$input_ptr], #16                      @ AES final-2 block - load ciphertext
+
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES final-3 block  - store result
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+
+	eor     $ctr0b, $res1b, $ctr1b                            @ AES final-2 block - result
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH final-3 block - low
+	mov     $output_l0, $ctr0.d[0]                            @ AES final-2 block - mov low
+	mov     $rk4d, $res0.d[1]                                 @ GHASH final-3 block - mid
+
+	mov     $output_h0, $ctr0.d[1]                            @ AES final-2 block - mov high
+
+	mov     $acc_md, $h34k.d[1]                               @ GHASH final-3 block - mid
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                      @ GHASH final-3 block - mid
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH final-3 block - high
+
+	eor     $output_l0, $output_l0, $rk12_l                   @ AES final-2 block - round 12 low
+	movi    $t0.8b, #0                                        @ suppress further partial tag feed in
+
+	pmull   $acc_m.1q, $rk4v.1d, $acc_m.1d                    @ GHASH final-3 block - mid
+	eor     $output_h0, $output_h0, $rk12_h                   @ AES final-2 block - round 12 high
+	.L192_dec_blocks_more_than_2:                             @ blocks left >  2
+
+	rev64   $res0b, $res1b                                    @ GHASH final-2 block
+	ld1     { $res1b}, [$input_ptr], #16                      @ AES final-1 block - load ciphertext
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+
+	movi    $t0.8b, #0                                        @ suppress further partial tag feed in
+
+	eor     $ctr0b, $res1b, $ctr2b                            @ AES final-1 block - result
+
+	mov     $rk4d, $res0.d[1]                                 @ GHASH final-2 block - mid
+
+	pmull   $rk3q1, $res0.1d, $h3.1d                          @ GHASH final-2 block - low
+
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES final-2 block  - store result
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                      @ GHASH final-2 block - mid
+	mov     $output_h0, $ctr0.d[1]                            @ AES final-1 block - mov high
+
+	eor     $acc_lb, $acc_lb, $rk3                            @ GHASH final-2 block - low
+	mov     $output_l0, $ctr0.d[0]                            @ AES final-1 block - mov low
+
+	pmull2  $rk2q1, $res0.2d, $h3.2d                          @ GHASH final-2 block - high
+
+	pmull   $rk4v.1q, $rk4v.1d, $h34k.1d                      @ GHASH final-2 block - mid
+
+	eor     $acc_hb, $acc_hb, $rk2                            @ GHASH final-2 block - high
+	eor     $output_h0, $output_h0, $rk12_h                   @ AES final-1 block - round 12 high
+
+	eor     $output_l0, $output_l0, $rk12_l                   @ AES final-1 block - round 12 low
+	eor     $acc_mb, $acc_mb, $rk4v.16b                       @ GHASH final-2 block - mid
+	.L192_dec_blocks_more_than_1:                             @ blocks left >  1
+
+	rev64   $res0b, $res1b                                    @ GHASH final-1 block
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+	ld1     { $res1b}, [$input_ptr], #16                      @ AES final block - load ciphertext
+
+	mov     $rk4d, $res0.d[1]                                 @ GHASH final-1 block - mid
+
+	pmull2  $rk2q1, $res0.2d, $h2.2d                          @ GHASH final-1 block - high
+
+	eor     $ctr0b, $res1b, $ctr3b                            @ AES final block - result
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES final-1 block  - store result
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                      @ GHASH final-1 block - mid
+
+	eor     $acc_hb, $acc_hb, $rk2                            @ GHASH final-1 block - high
+
+	pmull   $rk3q1, $res0.1d, $h2.1d                          @ GHASH final-1 block - low
+	mov     $output_h0, $ctr0.d[1]                            @ AES final block - mov high
+
+	ins     $rk4v.d[1], $rk4v.d[0]                            @ GHASH final-1 block - mid
+	mov     $output_l0, $ctr0.d[0]                            @ AES final block - mov low
+
+	pmull2  $rk4v.1q, $rk4v.2d, $h12k.2d                      @ GHASH final-1 block - mid
+
+	movi    $t0.8b, #0                                        @ suppress further partial tag feed in
+	eor     $acc_lb, $acc_lb, $rk3                            @ GHASH final-1 block - low
+	eor     $output_h0, $output_h0, $rk12_h                   @ AES final block - round 12 high
+
+	eor     $output_l0, $output_l0, $rk12_l                   @ AES final block - round 12 low
+
+	eor     $acc_mb, $acc_mb, $rk4v.16b                       @ GHASH final-1 block - mid
+	.L192_dec_blocks_less_than_1:                             @ blocks left <= 1
+
+	mvn     $rk12_l, xzr                                      @ rk12_l = 0xffffffffffffffff
+	ldp     $end_input_ptr, $main_end_input_ptr, [$output_ptr]  @ load existing bytes we need to not overwrite
+	and     $bit_length, $bit_length, #127                    @ bit_length %= 128
+
+	sub     $bit_length, $bit_length, #128                    @ bit_length -= 128
+
+	neg     $bit_length, $bit_length                          @ bit_length = 128 - #bits in input (in range [1,128])
+
+	and     $bit_length, $bit_length, #127                    @ bit_length %= 128
+	mvn     $rk12_h, xzr                                      @ rk12_h = 0xffffffffffffffff
+
+	lsr     $rk12_h, $rk12_h, $bit_length                     @ rk12_h is mask for top 64b of last block
+	cmp     $bit_length, #64
+
+	csel    $ctr32x, $rk12_l, $rk12_h, lt
+	csel    $ctr96_b64x, $rk12_h, xzr, lt
+
+	fmov    $ctr0d, $ctr32x                                   @ ctr0b is mask for last block
+	and     $output_l0, $output_l0, $ctr32x
+	bic     $end_input_ptr, $end_input_ptr, $ctr32x           @ mask out low existing bytes
+
+	orr     $output_l0, $output_l0, $end_input_ptr
+	mov     $ctr0.d[1], $ctr96_b64x
+
+	rev     $ctr32w, $rctr32w
+
+	and     $res1b, $res1b, $ctr0b                            @ possibly partial last block has zeroes in highest bits
+	str     $ctr32w, [$counter, #12]                          @ store the updated counter
+
+	rev64   $res0b, $res1b                                    @ GHASH final block
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+	bic     $main_end_input_ptr, $main_end_input_ptr, $ctr96_b64x @ mask out high existing bytes
+
+	and     $output_h0, $output_h0, $ctr96_b64x
+
+	pmull2  $rk2q1, $res0.2d, $h1.2d                          @ GHASH final block - high
+	mov     $t0d, $res0.d[1]                                  @ GHASH final block - mid
+
+	pmull   $rk3q1, $res0.1d, $h1.1d                          @ GHASH final block - low
+
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH final block - mid
+
+	eor     $acc_hb, $acc_hb, $rk2                            @ GHASH final block - high
+
+	pmull   $t0.1q, $t0.1d, $h12k.1d                          @ GHASH final block - mid
+
+	eor     $acc_lb, $acc_lb, $rk3                            @ GHASH final block - low
+
+	eor     $acc_mb, $acc_mb, $t0.16b                         @ GHASH final block - mid
+	movi    $mod_constant.8b, #0xc2
+
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+	orr     $output_h0, $output_h0, $main_end_input_ptr
+	stp     $output_l0, $output_h0, [$output_ptr]
+
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ MODULO - fold into mid
+
+	pmull   $mod_constant.1q, $acc_m.1d, $mod_constant.1d     @ MODULO - mid 64b align with low
+
+	eor     $acc_lb, $acc_lb, $mod_constant.16b               @ MODULO - fold into low
+
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+	mov     x0, $len
+	st1     { $acc_l.16b }, [$current_tag]
+
+	ldp     x21, x22, [sp, #16]
+	ldp     x23, x24, [sp, #32]
+	ldp     d8, d9, [sp, #48]
+	ldp     d10, d11, [sp, #64]
+	ldp     d12, d13, [sp, #80]
+	ldp     d14, d15, [sp, #96]
+	ldp     x19, x20, [sp], #112
+	ret
+
+.L192_dec_ret:
+	mov w0, #0x0
+	ret
+.size aes_gcm_dec_192_kernel,.-aes_gcm_dec_192_kernel
+___
+}
+
+{
+my ($end_input_ptr,$main_end_input_ptr,$input_l0,$input_h0)=map("x$_",(4..7));
+my ($input_l1,$input_h1,$input_l2,$input_h2,$input_l3,$input_h3)=map("x$_",(19..24));
+my ($output_l1,$output_h1,$output_l2,$output_h2,$output_l3,$output_h3)=map("x$_",(19..24));
+my ($output_l0,$output_h0)=map("x$_",(6..7));
+
+my $ctr32w="w9";
+my ($ctr32x,$ctr96_b64x,$ctr96_t32x,$rctr32x,$rk14_l,$rk14_h,$len)=map("x$_",(9..15));
+my ($ctr96_t32w,$rctr32w)=map("w$_",(11..12));
+
+my ($ctr0b,$ctr1b,$ctr2b,$ctr3b,$res0b,$res1b,$res2b,$res3b)=map("v$_.16b",(0..7));
+my ($ctr0,$ctr1,$ctr2,$ctr3,$res0,$res1,$res2,$res3)=map("v$_",(0..7));
+my ($ctr0d,$ctr1d,$ctr2d,$ctr3d,$res0d,$res1d,$res2d,$res3d)=map("d$_",(0..7));
+my ($res0q,$res1q,$res2q,$res3q)=map("q$_",(4..7));
+
+my ($acc_hb,$acc_mb,$acc_lb)=map("v$_.16b",(9..11));
+my ($acc_h,$acc_m,$acc_l)=map("v$_",(9..11));
+my ($acc_hd,$acc_md,$acc_ld)=map("d$_",(9..11));
+
+my ($h1,$h2,$h3,$h4,$h12k,$h34k)=map("v$_",(12..17));
+my ($h1q,$h2q,$h3q,$h4q)=map("q$_",(12..15));
+my ($h1b,$h2b,$h3b,$h4b)=map("v$_.16b",(12..15));
+
+my $t0="v8";
+my $t0d="d8";
+my $t1="v4";
+my $t1d="d4";
+my $t2="v8";
+my $t2d="d8";
+my $t3="v4";
+my $t3d="d4";
+my $t4="v4";
+my $t4d="d4";
+my $t5="v5";
+my $t5d="d5";
+my $t6="v8";
+my $t6d="d8";
+my $t7="v5";
+my $t7d="d5";
+my $t8="v6";
+my $t8d="d6";
+my $t9="v4";
+my $t9d="d4";
+
+my ($ctr_t0,$ctr_t1,$ctr_t2,$ctr_t3)=map("v$_",(4..7));
+my ($ctr_t0d,$ctr_t1d,$ctr_t2d,$ctr_t3d)=map("d$_",(4..7));
+my ($ctr_t0b,$ctr_t1b,$ctr_t2b,$ctr_t3b)=map("v$_.16b",(4..7));
+
+my $mod_constantd="d8";
+my $mod_constant="v8";
+my $mod_t="v7";
+
+my ($rk0,$rk1,$rk2,$rk3,$rk4,$rk5,$rk6,$rk7,$rk8,$rk9,$rk10,$rk11,$rk12,$rk13)=map("v$_.16b",(18..31));
+my ($rk0q,$rk1q,$rk2q,$rk3q,$rk4q,$rk5q,$rk6q,$rk7q,$rk8q,$rk9q,$rk10q,$rk11q,$rk12q,$rk13q)=map("q$_",(18..31));
+my $rk2q1="v20.1q";
+my $rk3q1="v21.1q";
+my $rk4v="v22";
+my $rk4d="d22";
+
+#########################################################################################
+# size_t aes_gcm_enc_256_kernel(const unsigned char *in,
+#                               size_t len,
+#                               unsigned char *out,
+#                               const void *key,
+#                               unsigned char ivec[16],
+#                               u64 *Xi);
+#
+$code.=<<___;
+.global aes_gcm_enc_256_kernel
+.type   aes_gcm_enc_256_kernel,%function
+.align  4
+aes_gcm_enc_256_kernel:
+	cbz     x1, .L256_enc_ret
+	stp     x19, x20, [sp, #-112]!
+	mov     x16, x4
+	mov     x8, x5
+	stp     x21, x22, [sp, #16]
+	stp     x23, x24, [sp, #32]
+	stp     d8, d9, [sp, #48]
+	stp     d10, d11, [sp, #64]
+	stp     d12, d13, [sp, #80]
+	stp     d14, d15, [sp, #96]
+
+	add     $end_input_ptr, $input_ptr, $bit_length, lsr #3   @ end_input_ptr
+	lsr     $main_end_input_ptr, $bit_length, #3              @ byte_len
+	mov     $len, $main_end_input_ptr
+	ldp     $ctr96_b64x, $ctr96_t32x, [$counter]              @ ctr96_b64, ctr96_t32
+
+	ld1     { $ctr0b}, [$counter]                             @ special case vector load initial counter so we can start first AES block as quickly as possible
+	sub     $main_end_input_ptr, $main_end_input_ptr, #1      @ byte_len - 1
+
+	ldr     $rk0q, [$cc, #0]                                  @ load rk0
+	and     $main_end_input_ptr, $main_end_input_ptr, #0xffffffffffffffc0 @ number of bytes to be processed in main loop (at least 1 byte must be handled by tail)
+
+	ldr     $rk7q, [$cc, #112]                                @ load rk7
+	add     $main_end_input_ptr, $main_end_input_ptr, $input_ptr
+
+	lsr     $rctr32x, $ctr96_t32x, #32
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 2
+	orr     $ctr96_t32w, $ctr96_t32w, $ctr96_t32w
+
+	rev     $rctr32w, $rctr32w                                @ rev_ctr32
+	cmp     $input_ptr, $main_end_input_ptr                   @ check if we have <= 4 blocks
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 1
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 0
+	add     $rctr32w, $rctr32w, #1                            @ increment rev_ctr32
+
+	rev     $ctr32w, $rctr32w                                 @ CTR block 1
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 3
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 1
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 1
+	ldr     $rk1q, [$cc, #16]                                 @ load rk1
+
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 1
+	rev     $ctr32w, $rctr32w                                 @ CTR block 2
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 2
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 2
+	ldr     $rk2q, [$cc, #32]                                 @ load rk2
+
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 2
+	rev     $ctr32w, $rctr32w                                 @ CTR block 3
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 1
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 3
+
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 3
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 0
+	ldr     $rk3q, [$cc, #48]                                 @ load rk3
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 2
+	ldr     $rk6q, [$cc, #96]                                 @ load rk6
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 0
+	ldr     $rk5q, [$cc, #80]                                 @ load rk5
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 1
+	ldr     $h3q, [$current_tag, #80]                         @ load h3l | h3h
+	ext     $h3b, $h3b, $h3b, #8
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 0
+	ldr     $rk13q, [$cc, #208]                               @ load rk13
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 1
+	ldr     $rk4q, [$cc, #64]                                 @ load rk4
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 2
+	ldr     $h2q, [$current_tag, #64]                         @ load h2l | h2h
+	ext     $h2b, $h2b, $h2b, #8
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 1
+	ldr     $rk12q, [$cc, #192]                               @ load rk12
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 2
+	ldr     $h4q, [$current_tag, #112]                        @ load h4l | h4h
+	ext     $h4b, $h4b, $h4b, #8
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 3
+	ldr     $rk11q, [$cc, #176]                               @ load rk11
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 2
+	ldr     $rk8q, [$cc, #128]                                @ load rk8
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 3
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 3
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 3
+	ldp     $rk14_l, $rk14_h, [$cc, #224]                     @ load rk14
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 3
+	ld1     { $acc_lb}, [$current_tag]
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 4
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 4
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 4
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 4
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 5
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 5
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 5
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 5
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 6
+	trn2    $h34k.2d,  $h3.2d,    $h4.2d                      @ h4l | h3l
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 6
+	ldr     $rk9q, [$cc, #144]                                @ load rk9
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 6
+	ldr     $h1q, [$current_tag, #32]                         @ load h1l | h1h
+	ext     $h1b, $h1b, $h1b, #8
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 6
+	ldr     $rk10q, [$cc, #160]                               @ load rk10
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 7
+	trn1    $acc_h.2d, $h3.2d,    $h4.2d                      @ h4h | h3h
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 7
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 7
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 7
+	trn2    $h12k.2d,  $h1.2d,    $h2.2d                      @ h2l | h1l
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 8
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 8
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 8
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 9
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 9
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 8
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 10
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 9
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 9
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 10
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 10
+
+	aese    $ctr1b, $rk11 \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 11
+
+	aese    $ctr2b, $rk11 \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 11
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 10
+
+	aese    $ctr1b, $rk12 \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 12
+
+	aese    $ctr2b, $rk12 \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 12
+
+	aese    $ctr0b, $rk11 \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 11
+	eor     $h34k.16b, $h34k.16b, $acc_h.16b                  @ h4k | h3k
+
+	aese    $ctr3b, $rk11 \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 11
+
+	aese    $ctr2b, $rk13                                     @ AES block 2 - round 13
+	trn1    $t0.2d,    $h1.2d,    $h2.2d                      @ h2h | h1h
+
+	aese    $ctr0b, $rk12 \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 12
+
+	aese    $ctr3b, $rk12 \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 12
+
+	aese    $ctr1b, $rk13                                     @ AES block 1 - round 13
+
+	aese    $ctr0b, $rk13                                     @ AES block 0 - round 13
+
+	aese    $ctr3b, $rk13                                     @ AES block 3 - round 13
+	eor     $h12k.16b, $h12k.16b, $t0.16b                     @ h2k | h1k
+	b.ge    .L256_enc_tail                                    @ handle tail
+
+	ldp     $input_l1, $input_h1, [$input_ptr, #16]           @ AES block 1 - load plaintext
+
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4
+	ldp     $input_l0, $input_h0, [$input_ptr, #0]            @ AES block 0 - load plaintext
+
+	ldp     $input_l3, $input_h3, [$input_ptr, #48]           @ AES block 3 - load plaintext
+
+	ldp     $input_l2, $input_h2, [$input_ptr, #32]           @ AES block 2 - load plaintext
+	add     $input_ptr, $input_ptr, #64                       @ AES input_ptr update
+
+	eor     $input_l1, $input_l1, $rk14_l                     @ AES block 1 - round 14 low
+	eor     $input_h1, $input_h1, $rk14_h                     @ AES block 1 - round 14 high
+
+	fmov    $ctr_t1d, $input_l1                               @ AES block 1 - mov low
+	eor     $input_l0, $input_l0, $rk14_l                     @ AES block 0 - round 14 low
+
+	eor     $input_h0, $input_h0, $rk14_h                     @ AES block 0 - round 14 high
+	eor     $input_h3, $input_h3, $rk14_h                     @ AES block 3 - round 14 high
+	fmov    $ctr_t0d, $input_l0                               @ AES block 0 - mov low
+
+	cmp     $input_ptr, $main_end_input_ptr                   @ check if we have <= 8 blocks
+	fmov    $ctr_t0.d[1], $input_h0                           @ AES block 0 - mov high
+	eor     $input_l3, $input_l3, $rk14_l                     @ AES block 3 - round 14 low
+
+	eor     $input_l2, $input_l2, $rk14_l                     @ AES block 2 - round 14 low
+	fmov    $ctr_t1.d[1], $input_h1                           @ AES block 1 - mov high
+
+	fmov    $ctr_t2d, $input_l2                               @ AES block 2 - mov low
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4
+	fmov    $ctr_t3d, $input_l3                               @ AES block 3 - mov low
+	eor     $input_h2, $input_h2, $rk14_h                     @ AES block 2 - round 14 high
+
+	fmov    $ctr_t2.d[1], $input_h2                           @ AES block 2 - mov high
+
+	eor     $res0b, $ctr_t0b, $ctr0b                          @ AES block 0 - result
+	fmov    $ctr0d, $ctr96_b64x                               @ CTR block 4
+
+	fmov    $ctr0.d[1], $ctr32x                               @ CTR block 4
+	rev     $ctr32w, $rctr32w                                 @ CTR block 5
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 5
+
+	eor     $res1b, $ctr_t1b, $ctr1b                          @ AES block 1 - result
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 5
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 5
+
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 5
+	rev     $ctr32w, $rctr32w                                 @ CTR block 6
+	st1     { $res0b}, [$output_ptr], #16                     @ AES block 0 - store result
+
+	fmov    $ctr_t3.d[1], $input_h3                           @ AES block 3 - mov high
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 6
+	eor     $res2b, $ctr_t2b, $ctr2b                          @ AES block 2 - result
+
+	st1     { $res1b}, [$output_ptr], #16                     @ AES block 1 - store result
+
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 6
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 6
+
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 6
+	st1     { $res2b}, [$output_ptr], #16                     @ AES block 2 - store result
+	rev     $ctr32w, $rctr32w                                 @ CTR block 7
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 7
+
+	eor     $res3b, $ctr_t3b, $ctr3b                          @ AES block 3 - result
+	st1     { $res3b}, [$output_ptr], #16                     @ AES block 3 - store result
+	b.ge    L256_enc_prepretail                               @ do prepretail
+
+	.L256_enc_main_loop:                                      @ main loop start
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 0
+	rev64   $res0b, $res0b                                    @ GHASH block 4k (only t0 is free)
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 0
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 4k+3
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 0
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                     @ PRE 0
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 1
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 4k+3
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 1
+	ldp     $input_l3, $input_h3, [$input_ptr, #48]           @ AES block 4k+7 - load plaintext
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 1
+	ldp     $input_l2, $input_h2, [$input_ptr, #32]           @ AES block 4k+6 - load plaintext
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 2
+	eor     $res0b, $res0b, $acc_lb                           @ PRE 1
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 2
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 0
+	eor     $input_l3, $input_l3, $rk14_l                     @ AES block 4k+7 - round 14 low
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 3
+	mov     $acc_md, $h34k.d[1]                               @ GHASH block 4k - mid
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH block 4k - high
+	eor     $input_h2, $input_h2, $rk14_h                     @ AES block 4k+6 - round 14 high
+	mov     $t0d, $res0.d[1]                                  @ GHASH block 4k - mid
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 1
+	rev64   $res1b, $res1b                                    @ GHASH block 4k+1 (t0 and t1 free)
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 4
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH block 4k - low
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH block 4k - mid
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 2
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 5
+	rev64   $res3b, $res3b                                    @ GHASH block 4k+3 (t0, t1, t2 and t3 free)
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                          @ GHASH block 4k+1 - high
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                      @ GHASH block 4k - mid
+	rev64   $res2b, $res2b                                    @ GHASH block 4k+2 (t0, t1, and t2 free)
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                          @ GHASH block 4k+1 - low
+
+	eor     $acc_hb, $acc_hb, $t1.16b                         @ GHASH block 4k+1 - high
+	mov     $t3d, $res1.d[1]                                  @ GHASH block 4k+1 - mid
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 3
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 2
+	eor     $acc_lb, $acc_lb, $t2.16b                         @ GHASH block 4k+1 - low
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 3
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 4
+	mov     $t6d, $res2.d[1]                                  @ GHASH block 4k+2 - mid
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 3
+	eor     $t3.8b, $t3.8b, $res1.8b                          @ GHASH block 4k+1 - mid
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 4
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 6
+	eor     $t6.8b, $t6.8b, $res2.8b                          @ GHASH block 4k+2 - mid
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 4
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                          @ GHASH block 4k+1 - mid
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 7
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 5
+	ins     $t6.d[1], $t6.d[0]                                @ GHASH block 4k+2 - mid
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 5
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 8
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 5
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 6
+	eor     $acc_mb, $acc_mb, $t3.16b                         @ GHASH block 4k+1 - mid
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                          @ GHASH block 4k+2 - high
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                          @ GHASH block 4k+2 - low
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 7
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                          @ GHASH block 4k+3 - low
+	eor     $acc_hb, $acc_hb, $t4.16b                         @ GHASH block 4k+2 - high
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 6
+	ldp     $input_l1, $input_h1, [$input_ptr, #16]           @ AES block 4k+5 - load plaintext
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 8
+	mov     $t9d, $res3.d[1]                                  @ GHASH block 4k+3 - mid
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 6
+	eor     $acc_lb, $acc_lb, $t5.16b                         @ GHASH block 4k+2 - low
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                          @ GHASH block 4k+2 - mid
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                          @ GHASH block 4k+3 - high
+	eor     $t9.8b, $t9.8b, $res3.8b                          @ GHASH block 4k+3 - mid
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 7
+	eor     $input_l1, $input_l1, $rk14_l                     @ AES block 4k+5 - round 14 low
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 9
+	eor     $acc_mb, $acc_mb, $t6.16b                         @ GHASH block 4k+2 - mid
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 7
+	eor     $input_l2, $input_l2, $rk14_l                     @ AES block 4k+6 - round 14 low
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 9
+	movi    $mod_constant.8b, #0xc2
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                          @ GHASH block 4k+3 - mid
+	eor     $acc_hb, $acc_hb, $t7.16b                         @ GHASH block 4k+3 - high
+	fmov    $ctr_t1d, $input_l1                               @ AES block 4k+5 - mov low
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 8
+	ldp     $input_l0, $input_h0, [$input_ptr, #0]            @ AES block 4k+4 - load plaintext
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 10
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 8
+	eor     $acc_lb, $acc_lb, $t8.16b                         @ GHASH block 4k+3 - low
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 9
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 10
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ GHASH block 4k+3 - mid
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 9
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+3
+
+	aese    $ctr0b, $rk11 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 11
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr1b, $rk11 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 11
+	add     $input_ptr, $input_ptr, #64                       @ AES input_ptr update
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+8
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 10
+	eor     $input_l0, $input_l0, $rk14_l                     @ AES block 4k+4 - round 14 low
+
+	aese    $ctr1b, $rk12 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 12
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 10
+	eor     $input_h0, $input_h0, $rk14_h                     @ AES block 4k+4 - round 14 high
+
+	fmov    $ctr_t0d, $input_l0                               @ AES block 4k+4 - mov low
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+8
+	eor     $mod_t.16b, $acc_hb, $mod_t.16b                   @ MODULO - fold into mid
+
+	aese    $ctr0b, $rk12 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 12
+	eor     $input_h1, $input_h1, $rk14_h                     @ AES block 4k+5 - round 14 high
+
+	aese    $ctr2b, $rk11 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 11
+	eor     $input_h3, $input_h3, $rk14_h                     @ AES block 4k+7 - round 14 high
+
+	aese    $ctr3b, $rk11 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 11
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+8
+
+	aese    $ctr0b, $rk13                                     @ AES block 4k+4 - round 13
+	fmov    $ctr_t0.d[1], $input_h0                           @ AES block 4k+4 - mov high
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+
+	aese    $ctr2b, $rk12 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 12
+	fmov    $ctr_t3d, $input_l3                               @ AES block 4k+7 - mov low
+
+	aese    $ctr1b, $rk13                                     @ AES block 4k+5 - round 13
+	fmov    $ctr_t1.d[1], $input_h1                           @ AES block 4k+5 - mov high
+
+	fmov    $ctr_t2d, $input_l2                               @ AES block 4k+6 - mov low
+	cmp     $input_ptr, $main_end_input_ptr                   @ LOOP CONTROL
+
+	fmov    $ctr_t2.d[1], $input_h2                           @ AES block 4k+6 - mov high
+
+	pmull   $acc_h.1q, $acc_m.1d, $mod_constant.1d            @ MODULO - mid 64b align with low
+	eor     $res0b, $ctr_t0b, $ctr0b                          @ AES block 4k+4 - result
+	fmov    $ctr0d, $ctr96_b64x                               @ CTR block 4k+8
+
+	fmov    $ctr0.d[1], $ctr32x                               @ CTR block 4k+8
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+9
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+9
+
+	eor     $res1b, $ctr_t1b, $ctr1b                          @ AES block 4k+5 - result
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 4k+9
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+9
+
+	aese    $ctr3b, $rk12 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 12
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 4k+9
+
+	aese    $ctr2b, $rk13                                     @ AES block 4k+6 - round 13
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+10
+	st1     { $res0b}, [$output_ptr], #16                     @ AES block 4k+4 - store result
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+10
+	eor     $acc_lb, $acc_lb, $acc_hb                         @ MODULO - fold into low
+	fmov    $ctr_t3.d[1], $input_h3                           @ AES block 4k+7 - mov high
+
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+	st1     { $res1b}, [$output_ptr], #16                     @ AES block 4k+5 - store result
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+10
+
+	aese    $ctr3b, $rk13                                     @ AES block 4k+7 - round 13
+	eor     $res2b, $ctr_t2b, $ctr2b                          @ AES block 4k+6 - result
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 4k+10
+
+	st1     { $res2b}, [$output_ptr], #16                     @ AES block 4k+6 - store result
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 4k+10
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+11
+
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+11
+
+	eor     $res3b, $ctr_t3b, $ctr3b                          @ AES block 4k+7 - result
+	st1     { $res3b}, [$output_ptr], #16                     @ AES block 4k+7 - store result
+	b.lt    L256_enc_main_loop
+
+	.L256_enc_prepretail:                                     @ PREPRETAIL
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 0
+	rev64   $res2b, $res2b                                    @ GHASH block 4k+2 (t0, t1, and t2 free)
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 0
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 4k+3
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 0
+	rev64   $res0b, $res0b                                    @ GHASH block 4k (only t0 is free)
+
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 4k+3
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                     @ PRE 0
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 1
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 1
+
+	eor     $res0b, $res0b, $acc_lb                           @ PRE 1
+	rev64   $res1b, $res1b                                    @ GHASH block 4k+1 (t0 and t1 free)
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 2
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 0
+	mov     $acc_md, $h34k.d[1]                               @ GHASH block 4k - mid
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 1
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH block 4k - low
+	mov     $t0d, $res0.d[1]                                  @ GHASH block 4k - mid
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH block 4k - high
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 3
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 2
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH block 4k - mid
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 2
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 1
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 3
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                      @ GHASH block 4k - mid
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                          @ GHASH block 4k+1 - high
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                          @ GHASH block 4k+1 - low
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 2
+
+	eor     $acc_hb, $acc_hb, $t1.16b                         @ GHASH block 4k+1 - high
+	mov     $t3d, $res1.d[1]                                  @ GHASH block 4k+1 - mid
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 3
+	eor     $acc_lb, $acc_lb, $t2.16b                         @ GHASH block 4k+1 - low
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 3
+
+	eor     $t3.8b, $t3.8b, $res1.8b                          @ GHASH block 4k+1 - mid
+	mov     $t6d, $res2.d[1]                                  @ GHASH block 4k+2 - mid
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 4
+	rev64   $res3b, $res3b                                    @ GHASH block 4k+3 (t0, t1, t2 and t3 free)
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 4
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                          @ GHASH block 4k+1 - mid
+	eor     $t6.8b, $t6.8b, $res2.8b                          @ GHASH block 4k+2 - mid
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+3
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                          @ GHASH block 4k+2 - low
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 5
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 4
+	eor     $acc_mb, $acc_mb, $t3.16b                         @ GHASH block 4k+1 - mid
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                          @ GHASH block 4k+2 - high
+
+	eor     $acc_lb, $acc_lb, $t5.16b                         @ GHASH block 4k+2 - low
+	ins     $t6.d[1], $t6.d[0]                                @ GHASH block 4k+2 - mid
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 5
+
+	eor     $acc_hb, $acc_hb, $t4.16b                         @ GHASH block 4k+2 - high
+	mov     $t9d, $res3.d[1]                                  @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 4
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                          @ GHASH block 4k+2 - mid
+
+	eor     $t9.8b, $t9.8b, $res3.8b                          @ GHASH block 4k+3 - mid
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                          @ GHASH block 4k+3 - high
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 5
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                          @ GHASH block 4k+3 - mid
+	eor     $acc_mb, $acc_mb, $t6.16b                         @ GHASH block 4k+2 - mid
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 5
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 6
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 6
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 6
+	movi    $mod_constant.8b, #0xc2
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 6
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 7
+	eor     $acc_hb, $acc_hb, $t7.16b                         @ GHASH block 4k+3 - high
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 7
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 7
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 8
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ GHASH block 4k+3 - mid
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                          @ GHASH block 4k+3 - low
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 8
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 9
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 8
+	eor     $acc_lb, $acc_lb, $t8.16b                         @ GHASH block 4k+3 - low
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 9
+
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ karatsuba tidy up
+
+	pmull   $t1.1q, $acc_h.1d, $mod_constant.1d
+	ext     $acc_hb, $acc_hb, $acc_hb, #8
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 10
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 7
+	eor     $acc_mb, $acc_mb, $acc_lb
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 10
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 9
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 8
+
+	aese    $ctr1b, $rk11 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 11
+	eor     $acc_mb, $acc_mb, $t1.16b
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 10
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 9
+
+	aese    $ctr1b, $rk12 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 12
+
+	aese    $ctr0b, $rk11 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 11
+	eor     $acc_mb, $acc_mb, $acc_hb
+
+	aese    $ctr3b, $rk11 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 11
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 10
+
+	aese    $ctr0b, $rk12 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 12
+
+	pmull   $t1.1q, $acc_m.1d, $mod_constant.1d
+
+	aese    $ctr2b, $rk11 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 11
+	ext     $acc_mb, $acc_mb, $acc_mb, #8
+
+	aese    $ctr3b, $rk12 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 12
+
+	aese    $ctr1b, $rk13                                     @ AES block 4k+5 - round 13
+	eor     $acc_lb, $acc_lb, $t1.16b
+
+	aese    $ctr2b, $rk12 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 12
+
+	aese    $ctr3b, $rk13                                     @ AES block 4k+7 - round 13
+
+	aese    $ctr0b, $rk13                                     @ AES block 4k+4 - round 13
+
+	aese    $ctr2b, $rk13                                     @ AES block 4k+6 - round 13
+	eor     $acc_lb, $acc_lb, $acc_mb
+	.L256_enc_tail:                                           @ TAIL
+
+	ext     $t0.16b, $acc_lb, $acc_lb, #8                     @ prepare final partial tag
+	sub     $main_end_input_ptr, $end_input_ptr, $input_ptr   @ main_end_input_ptr is number of bytes left to process
+	ldp     $input_l0, $input_h0, [$input_ptr], #16           @ AES block 4k+4 - load plaintext
+
+	eor     $input_l0, $input_l0, $rk14_l                     @ AES block 4k+4 - round 14 low
+	eor     $input_h0, $input_h0, $rk14_h                     @ AES block 4k+4 - round 14 high
+
+	cmp     $main_end_input_ptr, #48
+	fmov    $ctr_t0d, $input_l0                               @ AES block 4k+4 - mov low
+
+	fmov    $ctr_t0.d[1], $input_h0                           @ AES block 4k+4 - mov high
+
+	eor     $res1b, $ctr_t0b, $ctr0b                          @ AES block 4k+4 - result
+	b.gt    .L256_enc_blocks_more_than_3
+
+	cmp     $main_end_input_ptr, #32
+	mov     $ctr3b, $ctr2b
+	movi    $acc_l.8b, #0
+
+	movi    $acc_h.8b, #0
+	sub     $rctr32w, $rctr32w, #1
+
+	mov     $ctr2b, $ctr1b
+	movi    $acc_m.8b, #0
+	b.gt    .L256_enc_blocks_more_than_2
+
+	mov     $ctr3b, $ctr1b
+	sub     $rctr32w, $rctr32w, #1
+	cmp     $main_end_input_ptr, #16
+
+	b.gt    .L256_enc_blocks_more_than_1
+
+	sub     $rctr32w, $rctr32w, #1
+	b       .L256_enc_blocks_less_than_1
+	.L256_enc_blocks_more_than_3:                            @ blocks left >  3
+	st1     { $res1b}, [$output_ptr], #16                    @ AES final-3 block  - store result
+
+	ldp     $input_l0, $input_h0, [$input_ptr], #16          @ AES final-2 block - load input low & high
+
+	rev64   $res0b, $res1b                                   @ GHASH final-3 block
+
+	eor     $input_l0, $input_l0, $rk14_l                    @ AES final-2 block - round 14 low
+	eor     $res0b, $res0b, $t0.16b                          @ feed in partial tag
+
+	eor     $input_h0, $input_h0, $rk14_h                    @ AES final-2 block - round 14 high
+
+	mov     $rk4d, $res0.d[1]                                @ GHASH final-3 block - mid
+	fmov    $res1d, $input_l0                                @ AES final-2 block - mov low
+
+	fmov    $res1.d[1], $input_h0                            @ AES final-2 block - mov high
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                     @ GHASH final-3 block - mid
+	movi    $t0.8b, #0                                       @ suppress further partial tag feed in
+
+	mov     $acc_md, $h34k.d[1]                              @ GHASH final-3 block - mid
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                      @ GHASH final-3 block - low
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                      @ GHASH final-3 block - high
+
+	pmull   $acc_m.1q, $rk4v.1d, $acc_m.1d                   @ GHASH final-3 block - mid
+	eor     $res1b, $res1b, $ctr1b                           @ AES final-2 block - result
+	.L256_enc_blocks_more_than_2:                            @ blocks left >  2
+
+	st1     { $res1b}, [$output_ptr], #16                    @ AES final-2 block - store result
+
+	ldp     $input_l0, $input_h0, [$input_ptr], #16          @ AES final-1 block - load input low & high
+
+	rev64   $res0b, $res1b                                   @ GHASH final-2 block
+
+	eor     $input_l0, $input_l0, $rk14_l                    @ AES final-1 block - round 14 low
+	eor     $res0b, $res0b, $t0.16b                          @ feed in partial tag
+
+	fmov    $res1d, $input_l0                                @ AES final-1 block - mov low
+	eor     $input_h0, $input_h0, $rk14_h                    @ AES final-1 block - round 14 high
+
+	fmov    $res1.d[1], $input_h0                            @ AES final-1 block - mov high
+
+	movi    $t0.8b, #0                                       @ suppress further partial tag feed in
+
+	pmull2  $rk2q1, $res0.2d, $h3.2d                         @ GHASH final-2 block - high
+	mov     $rk4d, $res0.d[1]                                @ GHASH final-2 block - mid
+
+	pmull   $rk3q1, $res0.1d, $h3.1d                         @ GHASH final-2 block - low
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                     @ GHASH final-2 block - mid
+
+	eor     $res1b, $res1b, $ctr2b                           @ AES final-1 block - result
+
+	eor     $acc_hb, $acc_hb, $rk2                           @ GHASH final-2 block - high
+
+	pmull   $rk4v.1q, $rk4v.1d, $h34k.1d                     @ GHASH final-2 block - mid
+
+	eor     $acc_lb, $acc_lb, $rk3                           @ GHASH final-2 block - low
+
+	eor     $acc_mb, $acc_mb, $rk4v.16b                      @ GHASH final-2 block - mid
+	.L256_enc_blocks_more_than_1:                            @ blocks left >  1
+
+	st1     { $res1b}, [$output_ptr], #16                    @ AES final-1 block - store result
+
+	rev64   $res0b, $res1b                                   @ GHASH final-1 block
+
+	ldp     $input_l0, $input_h0, [$input_ptr], #16          @ AES final block - load input low & high
+
+	eor     $res0b, $res0b, $t0.16b                          @ feed in partial tag
+
+	movi    $t0.8b, #0                                       @ suppress further partial tag feed in
+
+	eor     $input_l0, $input_l0, $rk14_l                    @ AES final block - round 14 low
+	mov     $rk4d, $res0.d[1]                                @ GHASH final-1 block - mid
+
+	pmull2  $rk2q1, $res0.2d, $h2.2d                         @ GHASH final-1 block - high
+	eor     $input_h0, $input_h0, $rk14_h                    @ AES final block - round 14 high
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                     @ GHASH final-1 block - mid
+
+	eor     $acc_hb, $acc_hb, $rk2                           @ GHASH final-1 block - high
+
+	ins     $rk4v.d[1], $rk4v.d[0]                           @ GHASH final-1 block - mid
+	fmov    $res1d, $input_l0                                @ AES final block - mov low
+
+	fmov    $res1.d[1], $input_h0                            @ AES final block - mov high
+
+	pmull2  $rk4v.1q, $rk4v.2d, $h12k.2d                     @ GHASH final-1 block - mid
+
+	pmull   $rk3q1, $res0.1d, $h2.1d                         @ GHASH final-1 block - low
+
+	eor     $res1b, $res1b, $ctr3b                           @ AES final block - result
+	eor     $acc_mb, $acc_mb, $rk4v.16b                      @ GHASH final-1 block - mid
+
+	eor     $acc_lb, $acc_lb, $rk3                           @ GHASH final-1 block - low
+	.L256_enc_blocks_less_than_1:                            @ blocks left <= 1
+
+	and     $bit_length, $bit_length, #127                   @ bit_length %= 128
+
+	mvn     $rk14_l, xzr                                     @ rk14_l = 0xffffffffffffffff
+	sub     $bit_length, $bit_length, #128                   @ bit_length -= 128
+
+	neg     $bit_length, $bit_length                         @ bit_length = 128 - #bits in input (in range [1,128])
+	ld1     { $rk0}, [$output_ptr]                           @ load existing bytes where the possibly partial last block is to be stored
+
+	mvn     $rk14_h, xzr                                     @ rk14_h = 0xffffffffffffffff
+	and     $bit_length, $bit_length, #127                   @ bit_length %= 128
+
+	lsr     $rk14_h, $rk14_h, $bit_length                    @ rk14_h is mask for top 64b of last block
+	cmp     $bit_length, #64
+
+	csel    $input_l0, $rk14_l, $rk14_h, lt
+	csel    $input_h0, $rk14_h, xzr, lt
+
+	fmov    $ctr0d, $input_l0                                @ ctr0b is mask for last block
+
+	fmov    $ctr0.d[1], $input_h0
+
+	and     $res1b, $res1b, $ctr0b                           @ possibly partial last block has zeroes in highest bits
+
+	rev64   $res0b, $res1b                                   @ GHASH final block
+
+	eor     $res0b, $res0b, $t0.16b                          @ feed in partial tag
+
+	bif     $res1b, $rk0, $ctr0b                             @ insert existing bytes in top end of result before storing
+
+	pmull2  $rk2q1, $res0.2d, $h1.2d                         @ GHASH final block - high
+	mov     $t0d, $res0.d[1]                                 @ GHASH final block - mid
+	rev     $ctr32w, $rctr32w
+
+	pmull   $rk3q1, $res0.1d, $h1.1d                         @ GHASH final block - low
+
+	eor     $acc_hb, $acc_hb, $rk2                           @ GHASH final block - high
+	eor     $t0.8b, $t0.8b, $res0.8b                         @ GHASH final block - mid
+
+	pmull   $t0.1q, $t0.1d, $h12k.1d                         @ GHASH final block - mid
+
+	eor     $acc_lb, $acc_lb, $rk3                           @ GHASH final block - low
+
+	eor     $acc_mb, $acc_mb, $t0.16b                        @ GHASH final block - mid
+	movi    $mod_constant.8b, #0xc2
+
+	eor     $t9.16b, $acc_lb, $acc_hb                        @ MODULO - karatsuba tidy up
+
+	shl     $mod_constantd, $mod_constantd, #56              @ mod_constant
+
+	eor     $acc_mb, $acc_mb, $t9.16b                        @ MODULO - karatsuba tidy up
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d           @ MODULO - top 64b align with mid
+
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                    @ MODULO - other top alignment
+
+	eor     $acc_mb, $acc_mb, $mod_t.16b                     @ MODULO - fold into mid
+
+	eor     $acc_mb, $acc_mb, $acc_hb                        @ MODULO - fold into mid
+
+	pmull   $acc_h.1q, $acc_m.1d, $mod_constant.1d           @ MODULO - mid 64b align with low
+
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                    @ MODULO - other mid alignment
+
+	str     $ctr32w, [$counter, #12]                         @ store the updated counter
+
+	st1     { $res1b}, [$output_ptr]                         @ store all 16B
+	eor     $acc_lb, $acc_lb, $acc_hb                        @ MODULO - fold into low
+
+	eor     $acc_lb, $acc_lb, $acc_mb                        @ MODULO - fold into low
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+	mov     x0, $len
+	st1     { $acc_l.16b }, [$current_tag]
+
+	ldp     x21, x22, [sp, #16]
+	ldp     x23, x24, [sp, #32]
+	ldp     d8, d9, [sp, #48]
+	ldp     d10, d11, [sp, #64]
+	ldp     d12, d13, [sp, #80]
+	ldp     d14, d15, [sp, #96]
+	ldp     x19, x20, [sp], #112
+	ret
+
+.L256_enc_ret:
+	mov w0, #0x0
+	ret
+.size aes_gcm_enc_256_kernel,.-aes_gcm_enc_256_kernel
+___
+
+{
+my $t8="v4";
+my $t8d="d4";
+my $t9="v6";
+my $t9d="d6";
+#########################################################################################
+# size_t aes_gcm_dec_256_kernel(const unsigned char *in,
+#                               size_t len,
+#                               unsigned char *out,
+#                               const void *key,
+#                               unsigned char ivec[16],
+#                               u64 *Xi);
+#
+$code.=<<___;
+.global aes_gcm_dec_256_kernel
+.type   aes_gcm_dec_256_kernel,%function
+.align  4
+aes_gcm_dec_256_kernel:
+	cbz     x1, .L256_dec_ret
+	stp     x19, x20, [sp, #-112]!
+	mov     x16, x4
+	mov     x8, x5
+	stp     x21, x22, [sp, #16]
+	stp     x23, x24, [sp, #32]
+	stp     d8, d9, [sp, #48]
+	stp     d10, d11, [sp, #64]
+	stp     d12, d13, [sp, #80]
+	stp     d14, d15, [sp, #96]
+
+	lsr     $main_end_input_ptr, $bit_length, #3              @ byte_len
+	mov     $len, $main_end_input_ptr
+	ldp     $ctr96_b64x, $ctr96_t32x, [$counter]              @ ctr96_b64, ctr96_t32
+
+	ldr     $rk8q, [$cc, #128]                                @ load rk8
+	sub     $main_end_input_ptr, $main_end_input_ptr, #1      @ byte_len - 1
+
+	ldr     $rk7q, [$cc, #112]                                @ load rk7
+	and     $main_end_input_ptr, $main_end_input_ptr, #0xffffffffffffffc0 @ number of bytes to be processed in main loop (at least 1 byte must be handled by tail)
+
+	add     $end_input_ptr, $input_ptr, $bit_length, lsr #3   @ end_input_ptr
+	ldr     $rk6q, [$cc, #96]                                 @ load rk6
+
+	lsr     $rctr32x, $ctr96_t32x, #32
+	ldr     $rk5q, [$cc, #80]                                 @ load rk5
+	orr     $ctr96_t32w, $ctr96_t32w, $ctr96_t32w
+
+	ldr     $rk3q, [$cc, #48]                                 @ load rk3
+	add     $main_end_input_ptr, $main_end_input_ptr, $input_ptr
+	rev     $rctr32w, $rctr32w                                @ rev_ctr32
+
+	add     $rctr32w, $rctr32w, #1                            @ increment rev_ctr32
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 3
+
+	rev     $ctr32w, $rctr32w                                 @ CTR block 1
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 1
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 1
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 1
+	ld1     { $ctr0b}, [$counter]                             @ special case vector load initial counter so we can start first AES block as quickly as possible
+
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 1
+	rev     $ctr32w, $rctr32w                                 @ CTR block 2
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 2
+
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 2
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 2
+
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 2
+	rev     $ctr32w, $rctr32w                                 @ CTR block 3
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 3
+	ldr     $rk0q, [$cc, #0]                                  @ load rk0
+
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 3
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 3
+
+	ldr     $rk4q, [$cc, #64]                                 @ load rk4
+
+	ldr     $rk13q, [$cc, #208]                               @ load rk13
+
+	ldr     $rk1q, [$cc, #16]                                 @ load rk1
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 0
+	ldr     $h3q, [$current_tag, #80]                         @ load h3l | h3h
+	ext     $h3b, $h3b, $h3b, #8
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 0
+	ldr     $h4q, [$current_tag, #112]                        @ load h4l | h4h
+	ext     $h4b, $h4b, $h4b, #8
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 0
+	ldr     $h2q, [$current_tag, #64]                         @ load h2l | h2h
+	ext     $h2b, $h2b, $h2b, #8
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 0
+	ldr     $rk2q, [$cc, #32]                                 @ load rk2
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 1
+	ldp     $rk14_l, $rk14_h, [$cc, #224]                     @ load rk14
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 1
+	ld1     { $acc_lb}, [$current_tag]
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 1
+	ldr     $rk9q, [$cc, #144]                                @ load rk9
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 1
+	ldr     $rk12q, [$cc, #192]                               @ load rk12
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 2
+	ldr     $h1q, [$current_tag, #32]                         @ load h1l | h1h
+	ext     $h1b, $h1b, $h1b, #8
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 2
+	ldr     $rk10q, [$cc, #160]                               @ load rk10
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 2
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 3
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 2
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 3
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 4
+	cmp     $input_ptr, $main_end_input_ptr                   @ check if we have <= 4 blocks
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 3
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 3
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 4
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 4
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 4
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 5
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 5
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 5
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 5
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 6
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 6
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 6
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 6
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 7
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 7
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 7
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 8
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 7
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 8
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 8
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 9
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 8
+	ldr     $rk11q, [$cc, #176]                               @ load rk11
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 9
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 10
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 9
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 10
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 9
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 10
+
+	aese    $ctr0b, $rk11 \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 11
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 10
+
+	aese    $ctr3b, $rk11 \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 11
+
+	aese    $ctr1b, $rk11 \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 11
+
+	aese    $ctr2b, $rk11 \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 11
+
+	trn1    $acc_h.2d, $h3.2d,    $h4.2d                      @ h4h | h3h
+
+	trn2    $h34k.2d,  $h3.2d,    $h4.2d                      @ h4l | h3l
+
+	trn1    $t0.2d,    $h1.2d,    $h2.2d                      @ h2h | h1h
+	trn2    $h12k.2d,  $h1.2d,    $h2.2d                      @ h2l | h1l
+
+	aese    $ctr1b, $rk12 \n  aesmc   $ctr1b, $ctr1b          @ AES block 1 - round 12
+
+	aese    $ctr0b, $rk12 \n  aesmc   $ctr0b, $ctr0b          @ AES block 0 - round 12
+
+	aese    $ctr2b, $rk12 \n  aesmc   $ctr2b, $ctr2b          @ AES block 2 - round 12
+
+	aese    $ctr3b, $rk12 \n  aesmc   $ctr3b, $ctr3b          @ AES block 3 - round 12
+	eor     $h34k.16b, $h34k.16b, $acc_h.16b                  @ h4k | h3k
+
+	aese    $ctr1b, $rk13                                     @ AES block 1 - round 13
+
+	aese    $ctr2b, $rk13                                     @ AES block 2 - round 13
+	eor     $h12k.16b, $h12k.16b, $t0.16b                     @ h2k | h1k
+
+	aese    $ctr3b, $rk13                                     @ AES block 3 - round 13
+
+	aese    $ctr0b, $rk13                                     @ AES block 0 - round 13
+	b.ge    .L256_dec_tail                                    @ handle tail
+
+	ldr     $res0q, [$input_ptr, #0]                          @ AES block 0 - load ciphertext
+
+	ldr     $res1q, [$input_ptr, #16]                         @ AES block 1 - load ciphertext
+
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4
+
+	eor     $ctr0b, $res0b, $ctr0b                            @ AES block 0 - result
+
+	eor     $ctr1b, $res1b, $ctr1b                            @ AES block 1 - result
+	rev64   $res1b, $res1b                                    @ GHASH block 1
+	ldr     $res3q, [$input_ptr, #48]                         @ AES block 3 - load ciphertext
+
+	mov     $output_h0, $ctr0.d[1]                            @ AES block 0 - mov high
+
+	mov     $output_l0, $ctr0.d[0]                            @ AES block 0 - mov low
+	rev64   $res0b, $res0b                                    @ GHASH block 0
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4
+
+	fmov    $ctr0d, $ctr96_b64x                               @ CTR block 4
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4
+
+	fmov    $ctr0.d[1], $ctr32x                               @ CTR block 4
+	rev     $ctr32w, $rctr32w                                 @ CTR block 5
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 5
+
+	mov     $output_l1, $ctr1.d[0]                            @ AES block 1 - mov low
+
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 5
+	mov     $output_h1, $ctr1.d[1]                            @ AES block 1 - mov high
+	eor     $output_h0, $output_h0, $rk14_h                   @ AES block 0 - round 14 high
+
+	eor     $output_l0, $output_l0, $rk14_l                   @ AES block 0 - round 14 low
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES block 0 - store result
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 5
+
+	ldr     $res2q, [$input_ptr, #32]                         @ AES block 2 - load ciphertext
+	add     $input_ptr, $input_ptr, #64                       @ AES input_ptr update
+
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 5
+	rev     $ctr32w, $rctr32w                                 @ CTR block 6
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 6
+
+	eor     $output_l1, $output_l1, $rk14_l                   @ AES block 1 - round 14 low
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 6
+
+	eor     $output_h1, $output_h1, $rk14_h                   @ AES block 1 - round 14 high
+	stp     $output_l1, $output_h1, [$output_ptr], #16        @ AES block 1 - store result
+
+	eor     $ctr2b, $res2b, $ctr2b                            @ AES block 2 - result
+	cmp     $input_ptr, $main_end_input_ptr                   @ check if we have <= 8 blocks
+	b.ge    .L256_dec_prepretail                              @ do prepretail
+
+	.L256_dec_main_loop:                                      @ main loop start
+	mov     $output_l2, $ctr2.d[0]                            @ AES block 4k+2 - mov low
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                     @ PRE 0
+	eor     $ctr3b, $res3b, $ctr3b                            @ AES block 4k+3 - result
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 0
+	mov     $output_h2, $ctr2.d[1]                            @ AES block 4k+2 - mov high
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 0
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 4k+6
+
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 4k+6
+	eor     $res0b, $res0b, $acc_lb                           @ PRE 1
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+7
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 1
+	mov     $output_h3, $ctr3.d[1]                            @ AES block 4k+3 - mov high
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 1
+	mov     $output_l3, $ctr3.d[0]                            @ AES block 4k+3 - mov low
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH block 4k - high
+	mov     $t0d, $res0.d[1]                                  @ GHASH block 4k - mid
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 4k+7
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 2
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+7
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 0
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 4k+7
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 2
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH block 4k - mid
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 3
+	eor     $output_h2, $output_h2, $rk14_h                   @ AES block 4k+2 - round 14 high
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 1
+	mov     $acc_md, $h34k.d[1]                               @ GHASH block 4k - mid
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 3
+	rev64   $res2b, $res2b                                    @ GHASH block 4k+2
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 0
+	eor     $output_l2, $output_l2, $rk14_l                   @ AES block 4k+2 - round 14 low
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 2
+	stp     $output_l2, $output_h2, [$output_ptr], #16        @ AES block 4k+2 - store result
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH block 4k - low
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                          @ GHASH block 4k+1 - high
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 3
+	rev64   $res3b, $res3b                                    @ GHASH block 4k+3
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                      @ GHASH block 4k - mid
+	eor     $output_l3, $output_l3, $rk14_l                   @ AES block 4k+3 - round 14 low
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                          @ GHASH block 4k+1 - low
+	eor     $output_h3, $output_h3, $rk14_h                   @ AES block 4k+3 - round 14 high
+	eor     $acc_hb, $acc_hb, $t1.16b                         @ GHASH block 4k+1 - high
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 4
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 1
+	mov     $t3d, $res1.d[1]                                  @ GHASH block 4k+1 - mid
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 4
+	eor     $acc_lb, $acc_lb, $t2.16b                         @ GHASH block 4k+1 - low
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 5
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+7
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 2
+	mov     $t6d, $res2.d[1]                                  @ GHASH block 4k+2 - mid
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 4
+	eor     $t3.8b, $t3.8b, $res1.8b                          @ GHASH block 4k+1 - mid
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                          @ GHASH block 4k+2 - low
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 3
+	eor     $t6.8b, $t6.8b, $res2.8b                          @ GHASH block 4k+2 - mid
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 5
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 5
+	eor     $acc_lb, $acc_lb, $t5.16b                         @ GHASH block 4k+2 - low
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                          @ GHASH block 4k+1 - mid
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+8
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 6
+	ins     $t6.d[1], $t6.d[0]                                @ GHASH block 4k+2 - mid
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 6
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+8
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 4
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 7
+	eor     $acc_mb, $acc_mb, $t3.16b                         @ GHASH block 4k+1 - mid
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 7
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                          @ GHASH block 4k+2 - high
+	mov     $t9d, $res3.d[1]                                  @ GHASH block 4k+3 - mid
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 5
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                          @ GHASH block 4k+2 - mid
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 8
+	eor     $acc_hb, $acc_hb, $t4.16b                         @ GHASH block 4k+2 - high
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 6
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                          @ GHASH block 4k+3 - low
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+8
+	eor     $acc_mb, $acc_mb, $t6.16b                         @ GHASH block 4k+2 - mid
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                          @ GHASH block 4k+3 - high
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 9
+	eor     $t9.8b, $t9.8b, $res3.8b                          @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 8
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 6
+	eor     $acc_hb, $acc_hb, $t7.16b                         @ GHASH block 4k+3 - high
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 10
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                          @ GHASH block 4k+3 - mid
+	movi    $mod_constant.8b, #0xc2
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 7
+	eor     $acc_lb, $acc_lb, $t8.16b                         @ GHASH block 4k+3 - low
+
+	aese    $ctr0b, $rk11 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 11
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 7
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 8
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ GHASH block 4k+3 - mid
+
+	aese    $ctr0b, $rk12 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 12
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 9
+	ldr     $res0q, [$input_ptr, #0]                          @ AES block 4k+4 - load ciphertext
+
+	aese    $ctr0b, $rk13                                     @ AES block 4k+4 - round 13
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 10
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 9
+	ldr     $res1q, [$input_ptr, #16]                         @ AES block 4k+5 - load ciphertext
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 8
+	eor     $ctr0b, $res0b, $ctr0b                            @ AES block 4k+4 - result
+
+	aese    $ctr1b, $rk11 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 11
+	stp     $output_l3, $output_h3, [$output_ptr], #16        @ AES block 4k+3 - store result
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 10
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 9
+	ldr     $res3q, [$input_ptr, #48]                         @ AES block 4k+7 - load ciphertext
+
+	aese    $ctr1b, $rk12 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 12
+	ldr     $res2q, [$input_ptr, #32]                         @ AES block 4k+6 - load ciphertext
+
+	aese    $ctr2b, $rk11 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 11
+	mov     $output_h0, $ctr0.d[1]                            @ AES block 4k+4 - mov high
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 10
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ MODULO - fold into mid
+
+	aese    $ctr1b, $rk13                                     @ AES block 4k+5 - round 13
+	add     $input_ptr, $input_ptr, #64                       @ AES input_ptr update
+	mov     $output_l0, $ctr0.d[0]                            @ AES block 4k+4 - mov low
+
+	aese    $ctr2b, $rk12 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 12
+	fmov    $ctr0d, $ctr96_b64x                               @ CTR block 4k+8
+
+	aese    $ctr3b, $rk11 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 11
+	fmov    $ctr0.d[1], $ctr32x                               @ CTR block 4k+8
+
+	pmull   $mod_constant.1q, $acc_m.1d, $mod_constant.1d     @ MODULO - mid 64b align with low
+	eor     $ctr1b, $res1b, $ctr1b                            @ AES block 4k+5 - result
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+9
+
+	aese    $ctr2b, $rk13                                     @ AES block 4k+6 - round 13
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+9
+	cmp     $input_ptr, $main_end_input_ptr                   @ LOOP CONTROL
+
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+9
+
+	eor     $output_l0, $output_l0, $rk14_l                   @ AES block 4k+4 - round 14 low
+	eor     $output_h0, $output_h0, $rk14_h                   @ AES block 4k+4 - round 14 high
+
+	mov     $output_h1, $ctr1.d[1]                            @ AES block 4k+5 - mov high
+	eor     $ctr2b, $res2b, $ctr2b                            @ AES block 4k+6 - result
+	eor     $acc_lb, $acc_lb, $mod_constant.16b               @ MODULO - fold into low
+
+	aese    $ctr3b, $rk12 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 12
+	mov     $output_l1, $ctr1.d[0]                            @ AES block 4k+5 - mov low
+
+	fmov    $ctr1d, $ctr96_b64x                               @ CTR block 4k+9
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+
+	fmov    $ctr1.d[1], $ctr32x                               @ CTR block 4k+9
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+10
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+10
+
+	aese    $ctr3b, $rk13                                     @ AES block 4k+7 - round 13
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+10
+
+	rev64   $res1b, $res1b                                    @ GHASH block 4k+5
+	eor     $output_h1, $output_h1, $rk14_h                   @ AES block 4k+5 - round 14 high
+	stp     $output_l0, $output_h0, [$output_ptr], #16        @ AES block 4k+4 - store result
+
+	eor     $output_l1, $output_l1, $rk14_l                   @ AES block 4k+5 - round 14 low
+	stp     $output_l1, $output_h1, [$output_ptr], #16        @ AES block 4k+5 - store result
+
+	rev64   $res0b, $res0b                                    @ GHASH block 4k+4
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+	b.lt    .L256_dec_main_loop
+
+
+	.L256_dec_prepretail:                                     @ PREPRETAIL
+	ext     $acc_lb, $acc_lb, $acc_lb, #8                     @ PRE 0
+	mov     $output_l2, $ctr2.d[0]                            @ AES block 4k+2 - mov low
+	eor     $ctr3b, $res3b, $ctr3b                            @ AES block 4k+3 - result
+
+	aese    $ctr0b, $rk0  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 0
+	mov     $output_h2, $ctr2.d[1]                            @ AES block 4k+2 - mov high
+
+	aese    $ctr1b, $rk0  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 0
+	fmov    $ctr2d, $ctr96_b64x                               @ CTR block 4k+6
+
+	fmov    $ctr2.d[1], $ctr32x                               @ CTR block 4k+6
+	rev     $ctr32w, $rctr32w                                 @ CTR block 4k+7
+	eor     $res0b, $res0b, $acc_lb                           @ PRE 1
+
+	rev64   $res2b, $res2b                                    @ GHASH block 4k+2
+	orr     $ctr32x, $ctr96_t32x, $ctr32x, lsl #32            @ CTR block 4k+7
+	mov     $output_l3, $ctr3.d[0]                            @ AES block 4k+3 - mov low
+
+	aese    $ctr1b, $rk1  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 1
+	mov     $output_h3, $ctr3.d[1]                            @ AES block 4k+3 - mov high
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                       @ GHASH block 4k - low
+	mov     $t0d, $res0.d[1]                                  @ GHASH block 4k - mid
+	fmov    $ctr3d, $ctr96_b64x                               @ CTR block 4k+7
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                       @ GHASH block 4k - high
+	fmov    $ctr3.d[1], $ctr32x                               @ CTR block 4k+7
+
+	aese    $ctr2b, $rk0  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 0
+	mov     $acc_md, $h34k.d[1]                               @ GHASH block 4k - mid
+
+	aese    $ctr0b, $rk1  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 1
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH block 4k - mid
+
+	pmull2  $t1.1q, $res1.2d, $h3.2d                          @ GHASH block 4k+1 - high
+
+	aese    $ctr2b, $rk1  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 1
+	rev64   $res3b, $res3b                                    @ GHASH block 4k+3
+
+	aese    $ctr3b, $rk0  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 0
+
+	pmull   $acc_m.1q, $t0.1d, $acc_m.1d                      @ GHASH block 4k - mid
+	eor     $acc_hb, $acc_hb, $t1.16b                         @ GHASH block 4k+1 - high
+
+	pmull   $t2.1q, $res1.1d, $h3.1d                          @ GHASH block 4k+1 - low
+
+	aese    $ctr3b, $rk1  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 1
+	mov     $t3d, $res1.d[1]                                  @ GHASH block 4k+1 - mid
+
+	aese    $ctr0b, $rk2  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 2
+
+	aese    $ctr1b, $rk2  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 2
+	eor     $acc_lb, $acc_lb, $t2.16b                         @ GHASH block 4k+1 - low
+
+	aese    $ctr2b, $rk2  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 2
+
+	aese    $ctr0b, $rk3  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 3
+	mov     $t6d, $res2.d[1]                                  @ GHASH block 4k+2 - mid
+
+	aese    $ctr3b, $rk2  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 2
+	eor     $t3.8b, $t3.8b, $res1.8b                          @ GHASH block 4k+1 - mid
+
+	pmull   $t5.1q, $res2.1d, $h2.1d                          @ GHASH block 4k+2 - low
+
+	aese    $ctr0b, $rk4  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 4
+
+	aese    $ctr3b, $rk3  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 3
+	eor     $t6.8b, $t6.8b, $res2.8b                          @ GHASH block 4k+2 - mid
+
+	pmull   $t3.1q, $t3.1d, $h34k.1d                          @ GHASH block 4k+1 - mid
+
+	aese    $ctr0b, $rk5  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 5
+	eor     $acc_lb, $acc_lb, $t5.16b                         @ GHASH block 4k+2 - low
+
+	aese    $ctr3b, $rk4  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 4
+
+	pmull2  $t7.1q, $res3.2d, $h1.2d                          @ GHASH block 4k+3 - high
+	eor     $acc_mb, $acc_mb, $t3.16b                         @ GHASH block 4k+1 - mid
+
+	pmull2  $t4.1q, $res2.2d, $h2.2d                          @ GHASH block 4k+2 - high
+
+	aese    $ctr3b, $rk5  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 5
+	ins     $t6.d[1], $t6.d[0]                                @ GHASH block 4k+2 - mid
+
+	aese    $ctr2b, $rk3  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 3
+
+	aese    $ctr1b, $rk3  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 3
+	eor     $acc_hb, $acc_hb, $t4.16b                         @ GHASH block 4k+2 - high
+
+	pmull   $t8.1q, $res3.1d, $h1.1d                          @ GHASH block 4k+3 - low
+
+	aese    $ctr2b, $rk4  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 4
+	mov     $t9d, $res3.d[1]                                  @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk4  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 4
+
+	pmull2  $t6.1q, $t6.2d, $h12k.2d                          @ GHASH block 4k+2 - mid
+
+	aese    $ctr2b, $rk5  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 5
+	eor     $t9.8b, $t9.8b, $res3.8b                          @ GHASH block 4k+3 - mid
+
+	aese    $ctr1b, $rk5  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 5
+
+	aese    $ctr3b, $rk6  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 6
+	eor     $acc_mb, $acc_mb, $t6.16b                         @ GHASH block 4k+2 - mid
+
+	aese    $ctr2b, $rk6  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 6
+
+	aese    $ctr0b, $rk6  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 6
+	movi    $mod_constant.8b, #0xc2
+
+	aese    $ctr1b, $rk6  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 6
+	eor     $acc_lb, $acc_lb, $t8.16b                         @ GHASH block 4k+3 - low
+
+	pmull   $t9.1q, $t9.1d, $h12k.1d                          @ GHASH block 4k+3 - mid
+
+	aese    $ctr3b, $rk7  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 7
+	eor     $acc_hb, $acc_hb, $t7.16b                         @ GHASH block 4k+3 - high
+
+	aese    $ctr1b, $rk7  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 7
+
+	aese    $ctr0b, $rk7  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 7
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ GHASH block 4k+3 - mid
+
+	aese    $ctr3b, $rk8  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 8
+
+	aese    $ctr2b, $rk7  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 7
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	aese    $ctr1b, $rk8  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 8
+
+	aese    $ctr0b, $rk8  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 8
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	aese    $ctr2b, $rk8  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 8
+
+	aese    $ctr1b, $rk9  \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 9
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+
+	aese    $ctr2b, $rk9  \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 9
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	aese    $ctr3b, $rk9  \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 9
+
+	aese    $ctr0b, $rk9  \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 9
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+
+	aese    $ctr2b, $rk10 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 10
+
+	aese    $ctr3b, $rk10 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 10
+
+	aese    $ctr0b, $rk10 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 10
+	eor     $output_h2, $output_h2, $rk14_h                   @ AES block 4k+2 - round 14 high
+
+	aese    $ctr1b, $rk10 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 10
+	eor     $output_l3, $output_l3, $rk14_l                   @ AES block 4k+3 - round 14 low
+
+	aese    $ctr2b, $rk11 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 11
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ MODULO - fold into mid
+
+	aese    $ctr0b, $rk11 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 11
+	add     $rctr32w, $rctr32w, #1                            @ CTR block 4k+7
+
+	aese    $ctr1b, $rk11 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 11
+	eor     $output_l2, $output_l2, $rk14_l                   @ AES block 4k+2 - round 14 low
+
+	aese    $ctr2b, $rk12 \n  aesmc   $ctr2b, $ctr2b          @ AES block 4k+6 - round 12
+
+	pmull   $mod_constant.1q, $acc_m.1d, $mod_constant.1d     @ MODULO - mid 64b align with low
+	eor     $output_h3, $output_h3, $rk14_h                   @ AES block 4k+3 - round 14 high
+
+	aese    $ctr3b, $rk11 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 11
+	stp     $output_l2, $output_h2, [$output_ptr], #16        @ AES block 4k+2 - store result
+
+	aese    $ctr1b, $rk12 \n  aesmc   $ctr1b, $ctr1b          @ AES block 4k+5 - round 12
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+
+	aese    $ctr0b, $rk12 \n  aesmc   $ctr0b, $ctr0b          @ AES block 4k+4 - round 12
+	stp     $output_l3, $output_h3, [$output_ptr], #16        @ AES block 4k+3 - store result
+
+	aese    $ctr3b, $rk12 \n  aesmc   $ctr3b, $ctr3b          @ AES block 4k+7 - round 12
+	eor     $acc_lb, $acc_lb, $mod_constant.16b               @ MODULO - fold into low
+
+	aese    $ctr1b, $rk13                                     @ AES block 4k+5 - round 13
+
+	aese    $ctr0b, $rk13                                     @ AES block 4k+4 - round 13
+
+	aese    $ctr3b, $rk13                                     @ AES block 4k+7 - round 13
+
+	aese    $ctr2b, $rk13                                     @ AES block 4k+6 - round 13
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+	.L256_dec_tail:                                           @ TAIL
+
+	sub     $main_end_input_ptr, $end_input_ptr, $input_ptr   @ main_end_input_ptr is number of bytes left to process
+	ld1     { $res1b}, [$input_ptr], #16                      @ AES block 4k+4 - load ciphertext
+
+	eor     $ctr0b, $res1b, $ctr0b                            @ AES block 4k+4 - result
+
+	mov     $output_l0, $ctr0.d[0]                            @ AES block 4k+4 - mov low
+
+	mov     $output_h0, $ctr0.d[1]                            @ AES block 4k+4 - mov high
+	ext     $t0.16b, $acc_lb, $acc_lb, #8                     @ prepare final partial tag
+
+	cmp     $main_end_input_ptr, #48
+
+	eor     $output_l0, $output_l0, $rk14_l                   @ AES block 4k+4 - round 14 low
+
+	eor     $output_h0, $output_h0, $rk14_h                   @ AES block 4k+4 - round 14 high
+	b.gt    .L256_dec_blocks_more_than_3
+
+	sub     $rctr32w, $rctr32w, #1
+	mov     $ctr3b, $ctr2b
+	movi    $acc_m.8b, #0
+
+	movi    $acc_l.8b, #0
+	cmp     $main_end_input_ptr, #32
+
+	movi    $acc_h.8b, #0
+	mov     $ctr2b, $ctr1b
+	b.gt    .L256_dec_blocks_more_than_2
+
+	sub     $rctr32w, $rctr32w, #1
+
+	mov     $ctr3b, $ctr1b
+	cmp     $main_end_input_ptr, #16
+	b.gt    .L256_dec_blocks_more_than_1
+
+	sub     $rctr32w, $rctr32w, #1
+	b       .L256_dec_blocks_less_than_1
+	.L256_dec_blocks_more_than_3:                            @ blocks left >  3
+	rev64   $res0b, $res1b                                   @ GHASH final-3 block
+	ld1     { $res1b}, [$input_ptr], #16                     @ AES final-2 block - load ciphertext
+
+	stp     $output_l0, $output_h0, [$output_ptr], #16       @ AES final-3 block  - store result
+
+	mov     $acc_md, $h34k.d[1]                              @ GHASH final-3 block - mid
+
+	eor     $res0b, $res0b, $t0.16b                          @ feed in partial tag
+
+	eor     $ctr0b, $res1b, $ctr1b                           @ AES final-2 block - result
+
+	mov     $rk4d, $res0.d[1]                                @ GHASH final-3 block - mid
+
+	mov     $output_l0, $ctr0.d[0]                           @ AES final-2 block - mov low
+
+	mov     $output_h0, $ctr0.d[1]                           @ AES final-2 block - mov high
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                     @ GHASH final-3 block - mid
+
+	movi    $t0.8b, #0                                       @ suppress further partial tag feed in
+
+	pmull2  $acc_h.1q, $res0.2d, $h4.2d                      @ GHASH final-3 block - high
+
+	pmull   $acc_m.1q, $rk4v.1d, $acc_m.1d                   @ GHASH final-3 block - mid
+	eor     $output_l0, $output_l0, $rk14_l                  @ AES final-2 block - round 14 low
+
+	pmull   $acc_l.1q, $res0.1d, $h4.1d                      @ GHASH final-3 block - low
+	eor     $output_h0, $output_h0, $rk14_h                  @ AES final-2 block - round 14 high
+	.L256_dec_blocks_more_than_2:                            @ blocks left >  2
+
+	rev64   $res0b, $res1b                                   @ GHASH final-2 block
+	ld1     { $res1b}, [$input_ptr], #16                     @ AES final-1 block - load ciphertext
+
+	eor     $res0b, $res0b, $t0.16b                          @ feed in partial tag
+	stp     $output_l0, $output_h0, [$output_ptr], #16       @ AES final-2 block  - store result
+
+	eor     $ctr0b, $res1b, $ctr2b                           @ AES final-1 block - result
+
+	mov     $rk4d, $res0.d[1]                                @ GHASH final-2 block - mid
+
+	pmull   $rk3q1, $res0.1d, $h3.1d                         @ GHASH final-2 block - low
+
+	pmull2  $rk2q1, $res0.2d, $h3.2d                         @ GHASH final-2 block - high
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                     @ GHASH final-2 block - mid
+	mov     $output_l0, $ctr0.d[0]                           @ AES final-1 block - mov low
+
+	mov     $output_h0, $ctr0.d[1]                           @ AES final-1 block - mov high
+	eor     $acc_lb, $acc_lb, $rk3                           @ GHASH final-2 block - low
+	movi    $t0.8b, #0                                       @ suppress further partial tag feed in
+
+	pmull   $rk4v.1q, $rk4v.1d, $h34k.1d                     @ GHASH final-2 block - mid
+
+	eor     $acc_hb, $acc_hb, $rk2                           @ GHASH final-2 block - high
+	eor     $output_l0, $output_l0, $rk14_l                  @ AES final-1 block - round 14 low
+
+	eor     $acc_mb, $acc_mb, $rk4v.16b                      @ GHASH final-2 block - mid
+	eor     $output_h0, $output_h0, $rk14_h                  @ AES final-1 block - round 14 high
+	.L256_dec_blocks_more_than_1:                            @ blocks left >  1
+
+	stp     $output_l0, $output_h0, [$output_ptr], #16       @ AES final-1 block  - store result
+	rev64   $res0b, $res1b                                   @ GHASH final-1 block
+
+	ld1     { $res1b}, [$input_ptr], #16                     @ AES final block - load ciphertext
+
+	eor     $res0b, $res0b, $t0.16b                          @ feed in partial tag
+	movi    $t0.8b, #0                                       @ suppress further partial tag feed in
+
+	mov     $rk4d, $res0.d[1]                                @ GHASH final-1 block - mid
+
+	eor     $ctr0b, $res1b, $ctr3b                           @ AES final block - result
+
+	pmull2  $rk2q1, $res0.2d, $h2.2d                         @ GHASH final-1 block - high
+
+	eor     $rk4v.8b, $rk4v.8b, $res0.8b                     @ GHASH final-1 block - mid
+
+	pmull   $rk3q1, $res0.1d, $h2.1d                         @ GHASH final-1 block - low
+	mov     $output_l0, $ctr0.d[0]                           @ AES final block - mov low
+
+	ins     $rk4v.d[1], $rk4v.d[0]                           @ GHASH final-1 block - mid
+
+	mov     $output_h0, $ctr0.d[1]                           @ AES final block - mov high
+
+	pmull2  $rk4v.1q, $rk4v.2d, $h12k.2d                     @ GHASH final-1 block - mid
+	eor     $output_l0, $output_l0, $rk14_l                  @ AES final block - round 14 low
+
+	eor     $acc_lb, $acc_lb, $rk3                           @ GHASH final-1 block - low
+
+	eor     $acc_hb, $acc_hb, $rk2                           @ GHASH final-1 block - high
+
+	eor     $acc_mb, $acc_mb, $rk4v.16b                      @ GHASH final-1 block - mid
+	eor     $output_h0, $output_h0, $rk14_h                  @ AES final block - round 14 high
+	.L256_dec_blocks_less_than_1:                            @ blocks left <= 1
+
+	and     $bit_length, $bit_length, #127                   @ bit_length %= 128
+	mvn     $rk14_h, xzr                                     @ rk14_h = 0xffffffffffffffff
+
+	sub     $bit_length, $bit_length, #128                   @ bit_length -= 128
+	mvn     $rk14_l, xzr                                     @ rk14_l = 0xffffffffffffffff
+
+	ldp     $end_input_ptr, $main_end_input_ptr, [$output_ptr] @ load existing bytes we need to not overwrite
+	neg     $bit_length, $bit_length                         @ bit_length = 128 - #bits in input (in range [1,128])
+
+	and     $bit_length, $bit_length, #127                   @ bit_length %= 128
+
+	lsr     $rk14_h, $rk14_h, $bit_length                    @ rk14_h is mask for top 64b of last block
+	cmp     $bit_length, #64
+
+	csel    $ctr32x, $rk14_l, $rk14_h, lt
+	csel    $ctr96_b64x, $rk14_h, xzr, lt
+
+	fmov    $ctr0d, $ctr32x                                  @ ctr0b is mask for last block
+	and     $output_l0, $output_l0, $ctr32x
+
+	mov     $ctr0.d[1], $ctr96_b64x
+	bic     $end_input_ptr, $end_input_ptr, $ctr32x          @ mask out low existing bytes
+
+	rev     $ctr32w, $rctr32w
+
+	bic     $main_end_input_ptr, $main_end_input_ptr, $ctr96_b64x      @ mask out high existing bytes
+
+	orr     $output_l0, $output_l0, $end_input_ptr
+
+	and     $output_h0, $output_h0, $ctr96_b64x
+
+	orr     $output_h0, $output_h0, $main_end_input_ptr
+
+	and     $res1b, $res1b, $ctr0b                            @ possibly partial last block has zeroes in highest bits
+
+	rev64   $res0b, $res1b                                    @ GHASH final block
+
+	eor     $res0b, $res0b, $t0.16b                           @ feed in partial tag
+
+	pmull   $rk3q1, $res0.1d, $h1.1d                          @ GHASH final block - low
+
+	mov     $t0d, $res0.d[1]                                  @ GHASH final block - mid
+
+	eor     $t0.8b, $t0.8b, $res0.8b                          @ GHASH final block - mid
+
+	pmull2  $rk2q1, $res0.2d, $h1.2d                          @ GHASH final block - high
+
+	pmull   $t0.1q, $t0.1d, $h12k.1d                          @ GHASH final block - mid
+
+	eor     $acc_hb, $acc_hb, $rk2                            @ GHASH final block - high
+
+	eor     $acc_lb, $acc_lb, $rk3                            @ GHASH final block - low
+
+	eor     $acc_mb, $acc_mb, $t0.16b                         @ GHASH final block - mid
+	movi    $mod_constant.8b, #0xc2
+
+	eor     $t9.16b, $acc_lb, $acc_hb                         @ MODULO - karatsuba tidy up
+
+	shl     $mod_constantd, $mod_constantd, #56               @ mod_constant
+
+	eor     $acc_mb, $acc_mb, $t9.16b                         @ MODULO - karatsuba tidy up
+
+	pmull   $mod_t.1q, $acc_h.1d, $mod_constant.1d            @ MODULO - top 64b align with mid
+
+	ext     $acc_hb, $acc_hb, $acc_hb, #8                     @ MODULO - other top alignment
+
+	eor     $acc_mb, $acc_mb, $mod_t.16b                      @ MODULO - fold into mid
+
+	eor     $acc_mb, $acc_mb, $acc_hb                         @ MODULO - fold into mid
+
+	pmull   $mod_constant.1q, $acc_m.1d, $mod_constant.1d     @ MODULO - mid 64b align with low
+
+	ext     $acc_mb, $acc_mb, $acc_mb, #8                     @ MODULO - other mid alignment
+
+	eor     $acc_lb, $acc_lb, $mod_constant.16b               @ MODULO - fold into low
+
+	stp     $output_l0, $output_h0, [$output_ptr]
+
+	str     $ctr32w, [$counter, #12]                          @ store the updated counter
+
+	eor     $acc_lb, $acc_lb, $acc_mb                         @ MODULO - fold into low
+	ext     $acc_lb, $acc_lb, $acc_lb, #8
+	rev64   $acc_lb, $acc_lb
+	mov     x0, $len
+	st1     { $acc_l.16b }, [$current_tag]
+
+	ldp     x21, x22, [sp, #16]
+	ldp     x23, x24, [sp, #32]
+	ldp     d8, d9, [sp, #48]
+	ldp     d10, d11, [sp, #64]
+	ldp     d12, d13, [sp, #80]
+	ldp     d14, d15, [sp, #96]
+	ldp     x19, x20, [sp], #112
+	ret
+
+.L256_dec_ret:
+	mov w0, #0x0
+	ret
+.size aes_gcm_dec_256_kernel,.-aes_gcm_dec_256_kernel
+___
+}
+}
+
+$code.=<<___;
+.asciz  "GHASH for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
+.align  2
+#endif
+___
+
+if ($flavour =~ /64/) {         ######## 64-bit code
+    sub unvmov {
+        my $arg=shift;
+
+        $arg =~ m/q([0-9]+)#(lo|hi),\s*q([0-9]+)#(lo|hi)/o &&
+        sprintf "ins    v%d.d[%d],v%d.d[%d]",$1<8?$1:$1+8,($2 eq "lo")?0:1,
+                             $3<8?$3:$3+8,($4 eq "lo")?0:1;
+    }
+    foreach(split("\n",$code)) {
+        s/@\s/\/\//o;               # old->new style commentary
+        print $_,"\n";
+    }
+} else {                ######## 32-bit code
+    sub unvdup32 {
+        my $arg=shift;
+
+        $arg =~ m/q([0-9]+),\s*q([0-9]+)\[([0-3])\]/o &&
+        sprintf "vdup.32    q%d,d%d[%d]",$1,2*$2+($3>>1),$3&1;
+    }
+    sub unvpmullp64 {
+        my ($mnemonic,$arg)=@_;
+
+        if ($arg =~ m/q([0-9]+),\s*q([0-9]+),\s*q([0-9]+)/o) {
+            my $word = 0xf2a00e00|(($1&7)<<13)|(($1&8)<<19)
+                       |(($2&7)<<17)|(($2&8)<<4)
+                       |(($3&7)<<1) |(($3&8)<<2);
+            $word |= 0x00010001  if ($mnemonic =~ "2");
+            # since ARMv7 instructions are always encoded little-endian.
+            # correct solution is to use .inst directive, but older%%%%
+            # assemblers don't implement it:-(
+            sprintf "INST(0x%02x,0x%02x,0x%02x,0x%02x)\t@ %s %s",
+                    $word&0xff,($word>>8)&0xff,
+                    ($word>>16)&0xff,($word>>24)&0xff,
+                    $mnemonic,$arg;
+        }
+    }
+
+    foreach(split("\n",$code)) {
+        s/\b[wx]([0-9]+)\b/r$1/go;      # new->old registers
+        s/\bv([0-9])\.[12468]+[bsd]\b/q$1/go;   # new->old registers
+        s/\/\/\s?/@ /o;             # new->old style commentary
+
+        # fix up remaining new-style suffixes
+        s/\],#[0-9]+/]!/o;
+
+        s/cclr\s+([^,]+),\s*([a-z]+)/mov.$2 $1,#0/o         or
+        s/vdup\.32\s+(.*)/unvdup32($1)/geo              or
+        s/v?(pmull2?)\.p64\s+(.*)/unvpmullp64($1,$2)/geo        or
+        s/\bq([0-9]+)#(lo|hi)/sprintf "d%d",2*$1+($2 eq "hi")/geo   or
+        s/^(\s+)b\./$1b/o                       or
+        s/^(\s+)ret/$1bx\tlr/o;
+
+        if (s/^(\s+)mov\.([a-z]+)/$1mov$2/) {
+            print "     it      $2\n";
+        }
+
+        print $_,"\n";
+    }
+}
+
+close STDOUT; # enforce flush
diff --git a/crypto/modes/build.info b/crypto/modes/build.info
index b741be821b..fb54b46ea5 100644
--- a/crypto/modes/build.info
+++ b/crypto/modes/build.info
@@ -24,7 +24,7 @@ IF[{- !$disabled{asm} -}]
 
   $MODESASM_armv4=ghash-armv4.S ghashv8-armx.S
   $MODESDEF_armv4=GHASH_ASM
-  $MODESASM_aarch64=ghashv8-armx.S
+  $MODESASM_aarch64=ghashv8-armx.S aes-gcm-armv8_64.S
   $MODESDEF_aarch64=
 
   $MODESASM_parisc11=ghash-parisc.s
@@ -76,6 +76,8 @@ GENERATE[ghash-armv4.S]=asm/ghash-armv4.pl
 INCLUDE[ghash-armv4.o]=..
 GENERATE[ghashv8-armx.S]=asm/ghashv8-armx.pl
 INCLUDE[ghashv8-armx.o]=..
+GENERATE[aes-gcm-armv8_64.S]=asm/aes-gcm-armv8_64.pl
+INCLUDE[aes-gcm-armv8_64.o]=..
 GENERATE[ghash-s390x.S]=asm/ghash-s390x.pl
 INCLUDE[ghash-s390x.o]=..
 GENERATE[ghash-c64xplus.S]=asm/ghash-c64xplus.pl
diff --git a/include/crypto/ciphermode_platform.h b/include/crypto/ciphermode_platform.h
index 03afd719af..e6a65bb99d 100644
--- a/include/crypto/ciphermode_platform.h
+++ b/include/crypto/ciphermode_platform.h
@@ -91,6 +91,32 @@ void AES_xts_decrypt(const unsigned char *inp, unsigned char *out, size_t len,
 #    define HWAES_cbc_encrypt aes_v8_cbc_encrypt
 #    define HWAES_ecb_encrypt aes_v8_ecb_encrypt
 #    define HWAES_ctr32_encrypt_blocks aes_v8_ctr32_encrypt_blocks
+#    define AES_PMULL_CAPABLE ((OPENSSL_armcap_P & ARMV8_PMULL) && (OPENSSL_armcap_P & ARMV8_AES))
+#    define AES_GCM_ENC_BYTES 512
+#    define AES_GCM_DEC_BYTES 512
+#    if __ARM_MAX_ARCH__>=8
+#     define AES_gcm_encrypt armv8_aes_gcm_encrypt
+#     define AES_gcm_decrypt armv8_aes_gcm_decrypt
+#     define AES_GCM_ASM(gctx) ((gctx)->ctr==aes_v8_ctr32_encrypt_blocks && \
+                                (gctx)->gcm.ghash==gcm_ghash_v8)
+size_t aes_gcm_enc_128_kernel(const uint8_t * plaintext, uint64_t plaintext_length, uint8_t * ciphertext,
+                              uint64_t *Xi, unsigned char ivec[16], const void *key);
+size_t aes_gcm_enc_192_kernel(const uint8_t * plaintext, uint64_t plaintext_length, uint8_t * ciphertext,
+                              uint64_t *Xi, unsigned char ivec[16], const void *key);
+size_t aes_gcm_enc_256_kernel(const uint8_t * plaintext, uint64_t plaintext_length, uint8_t * ciphertext,
+                              uint64_t *Xi, unsigned char ivec[16], const void *key);
+size_t aes_gcm_dec_128_kernel(const uint8_t * ciphertext, uint64_t plaintext_length, uint8_t * plaintext,
+                              uint64_t *Xi, unsigned char ivec[16], const void *key);
+size_t aes_gcm_dec_192_kernel(const uint8_t * ciphertext, uint64_t plaintext_length, uint8_t * plaintext,
+                              uint64_t *Xi, unsigned char ivec[16], const void *key);
+size_t aes_gcm_dec_256_kernel(const uint8_t * ciphertext, uint64_t plaintext_length, uint8_t * plaintext,
+                              uint64_t *Xi, unsigned char ivec[16], const void *key);
+size_t armv8_aes_gcm_encrypt(const unsigned char *in, unsigned char *out, size_t len, const void *key,
+                             unsigned char ivec[16], u64 *Xi);
+size_t armv8_aes_gcm_decrypt(const unsigned char *in, unsigned char *out, size_t len, const void *key,
+                             unsigned char ivec[16], u64 *Xi);
+void gcm_ghash_v8(u64 Xi[2],const u128 Htable[16],const u8 *inp, size_t len);
+#    endif
 #   endif
 #  endif
 # endif /* OPENSSL_CPUID_OBJ */
@@ -111,6 +137,9 @@ void AES_xts_decrypt(const unsigned char *inp, unsigned char *out, size_t len,
 #   define BSAES_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
 #  endif
 
+#  define AES_GCM_ENC_BYTES 32
+#  define AES_GCM_DEC_BYTES 16
+
 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
                           AES_KEY *key);
 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
@@ -181,6 +210,8 @@ size_t aesni_gcm_decrypt(const unsigned char *in, unsigned char *out, size_t len
                          const void *key, unsigned char ivec[16], u64 *Xi);
 void gcm_ghash_avx(u64 Xi[2], const u128 Htable[16], const u8 *in, size_t len);
 
+#   define AES_gcm_encrypt aesni_gcm_encrypt
+#   define AES_gcm_decrypt aesni_gcm_decrypt
 #   define AES_GCM_ASM(ctx)    (ctx->ctr == aesni_ctr32_encrypt_blocks && \
                                 ctx->gcm.ghash == gcm_ghash_avx)
 #  endif
@@ -416,7 +447,7 @@ void HWAES_ecb_encrypt(const unsigned char *in, unsigned char *out,
                        size_t length, const AES_KEY *key,
                        const int enc);
 void HWAES_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
-                                size_t len, const AES_KEY *key,
+                                size_t len, const void *key,
                                 const unsigned char ivec[16]);
 void HWAES_xts_encrypt(const unsigned char *inp, unsigned char *out,
                        size_t len, const AES_KEY *key1,
diff --git a/providers/implementations/ciphers/cipher_aes_gcm_hw.c b/providers/implementations/ciphers/cipher_aes_gcm_hw.c
index 0373917a18..08ee34ef1e 100644
--- a/providers/implementations/ciphers/cipher_aes_gcm_hw.c
+++ b/providers/implementations/ciphers/cipher_aes_gcm_hw.c
@@ -68,6 +68,8 @@ static const PROV_GCM_HW aes_gcm = {
 # include "cipher_aes_gcm_hw_aesni.inc"
 #elif defined(SPARC_AES_CAPABLE)
 # include "cipher_aes_gcm_hw_t4.inc"
+#elif defined(AES_PMULL_CAPABLE) && defined(AES_GCM_ASM)
+# include "cipher_aes_gcm_hw_armv8.inc"
 #else
 const PROV_GCM_HW *PROV_AES_HW_gcm(size_t keybits)
 {
diff --git a/providers/implementations/ciphers/cipher_aes_gcm_hw_armv8.inc b/providers/implementations/ciphers/cipher_aes_gcm_hw_armv8.inc
new file mode 100644
index 0000000000..4e8cc9c54e
--- /dev/null
+++ b/providers/implementations/ciphers/cipher_aes_gcm_hw_armv8.inc
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/*
+ * Crypto extention support for AES GCM.
+ * This file is included by cipher_aes_gcm_hw.c
+ */
+
+size_t armv8_aes_gcm_encrypt(const unsigned char *in, unsigned char *out, size_t len,
+                             const void *key, unsigned char ivec[16], u64 *Xi)
+{
+    size_t align_bytes = 0;
+    align_bytes = len - len % 16;
+
+    AES_KEY *aes_key = (AES_KEY *)key;
+
+    switch(aes_key->rounds) {
+        case 10:
+            aes_gcm_enc_128_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+        case 12:
+            aes_gcm_enc_192_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+        case 14:
+            aes_gcm_enc_256_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+    }
+    return align_bytes;
+}
+
+size_t armv8_aes_gcm_decrypt(const unsigned char *in, unsigned char *out, size_t len,
+                             const void *key, unsigned char ivec[16], u64 *Xi)
+{
+    size_t align_bytes = 0;
+    align_bytes = len - len % 16;
+
+    AES_KEY *aes_key = (AES_KEY *)key;
+
+    switch(aes_key->rounds) {
+        case 10:
+            aes_gcm_dec_128_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+        case 12:
+            aes_gcm_dec_192_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+        case 14:
+            aes_gcm_dec_256_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+    }
+    return align_bytes;
+}
+
+static int armv8_aes_gcm_initkey(PROV_GCM_CTX *ctx, const unsigned char *key,
+                                 size_t keylen)
+{
+    PROV_AES_GCM_CTX *actx = (PROV_AES_GCM_CTX *)ctx;
+    AES_KEY *ks = &actx->ks.ks;
+
+    GCM_HW_SET_KEY_CTR_FN(ks, aes_v8_set_encrypt_key, aes_v8_encrypt,
+                          aes_v8_ctr32_encrypt_blocks);
+    return 1;
+}
+
+
+static const PROV_GCM_HW armv8_aes_gcm = {
+    armv8_aes_gcm_initkey,
+    gcm_setiv,
+    gcm_aad_update,
+    gcm_cipher_update,
+    gcm_cipher_final,
+    gcm_one_shot
+};
+
+const PROV_GCM_HW *PROV_AES_HW_gcm(size_t keybits)
+{
+    return AES_PMULL_CAPABLE ? &armv8_aes_gcm : &aes_gcm;
+}
diff --git a/providers/implementations/ciphers/ciphercommon_gcm_hw.c b/providers/implementations/ciphers/ciphercommon_gcm_hw.c
index 60c7ac5d8f..1114c36b3f 100644
--- a/providers/implementations/ciphers/ciphercommon_gcm_hw.c
+++ b/providers/implementations/ciphers/ciphercommon_gcm_hw.c
@@ -30,14 +30,16 @@ int gcm_cipher_update(PROV_GCM_CTX *ctx, const unsigned char *in,
 #if defined(AES_GCM_ASM)
             size_t bulk = 0;
 
-            if (len >= 32 && AES_GCM_ASM(ctx)) {
+            if (len >= AES_GCM_ENC_BYTES && AES_GCM_ASM(ctx)) {
                 size_t res = (16 - ctx->gcm.mres) % 16;
 
                 if (CRYPTO_gcm128_encrypt(&ctx->gcm, in, out, res))
                     return 0;
-                bulk = aesni_gcm_encrypt(in + res, out + res, len - res,
-                                         ctx->gcm.key,
-                                         ctx->gcm.Yi.c, ctx->gcm.Xi.u);
+
+                bulk = AES_gcm_encrypt(in + res, out + res, len - res,
+                                       ctx->gcm.key,
+                                       ctx->gcm.Yi.c, ctx->gcm.Xi.u);
+
                 ctx->gcm.len.u[1] += bulk;
                 bulk += res;
             }
@@ -57,15 +59,16 @@ int gcm_cipher_update(PROV_GCM_CTX *ctx, const unsigned char *in,
 #if defined(AES_GCM_ASM)
             size_t bulk = 0;
 
-            if (len >= 16 && AES_GCM_ASM(ctx)) {
+            if (len >= AES_GCM_DEC_BYTES && AES_GCM_ASM(ctx)) {
                 size_t res = (16 - ctx->gcm.mres) % 16;
 
                 if (CRYPTO_gcm128_decrypt(&ctx->gcm, in, out, res))
                     return -1;
 
-                bulk = aesni_gcm_decrypt(in + res, out + res, len - res,
-                                         ctx->gcm.key,
-                                         ctx->gcm.Yi.c, ctx->gcm.Xi.u);
+                bulk = AES_gcm_decrypt(in + res, out + res, len - res,
+                                       ctx->gcm.key,
+                                       ctx->gcm.Yi.c, ctx->gcm.Xi.u);
+
                 ctx->gcm.len.u[1] += bulk;
                 bulk += res;
             }


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