OpenSSL 1.1.1t cannot decrypt 1.0.2k-fips files

[Tomas Mraz]

I'm sorry for confusing you. Here is the command to use:

openssl enc -aes-256-cbc -d -md md5 -in hello.en -out hello -k garystest

Tomas Mraz, OpenSSL

On Mon, 2023-04-03 at 10:17 -0700, Gary Li wrote:
> Tomas,
> Thank you for the suggestion, it still is not working for me. Here
> are my steps (you might see what I did wrong):
> 
> Encrypt:
> $ more hello
> Hello World!
> $ openssl version -a
> OpenSSL 1.0.2k-fips  26 Jan 2017
> built on: reproducible build, date unspecified
> platform: linux-x86_64
> options:  bn(64,64) md2(int) rc4(16x,int) des(idx,cisc,16,int)
> idea(int) blowfish(idx)
> compiler: gcc -I. -I.. -I../include  -fPIC -DOPENSSL_PIC -DZLIB -
> DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -DKRB5_MIT -
> m64 -DL_ENDIAN -Wall -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -
> fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -
> grecord-gcc-switches   -m64 -mtune=generic -Wa,--noexecstack -DPURIFY
> -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -
> DOPENSSL_BN_ASM_GF2m -DRC4_ASM -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -
> DMD5_ASM -DAES_ASM -DVPAES_ASM -DBSAES_ASM -DWHIRLPOOL_ASM -
> DGHASH_ASM -DECP_NISTZ256_ASM
> OPENSSLDIR: "/etc/pki/tls"
> engines:  rdrand dynamic
> $ openssl enc -aes-256-cbc -in hello -out hello.en -k garystest
> 
> Decrypt:
> $ openssl version -a
> OpenSSL 1.1.1t  7 Feb 2023
> built on: Thu Mar 30 22:02:29 2023 UTC
> platform: linux-x86_64
> options:  bn(64,64) rc4(16x,int) des(int) idea(int) blowfish(ptr)
> compiler: gcc -fPIC -pthread -m64 -Wa,--noexecstack -Wall -O3 -
> DOPENSSL_USE_NODELETE -DL_ENDIAN -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ -
> DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -
> DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -
> DKECCAK1600_ASM -DRC4_ASM -DMD5_ASM -DAESNI_ASM -DVPAES_ASM -
> DGHASH_ASM -DECP_NISTZ256_ASM -DX25519_ASM -DPOLY1305_ASM -DNDEBUG
> OPENSSLDIR: "/usr/local/ssl/ssl"
> ENGINESDIR: "/usr/local/ssl/lib/engines-1.1"
> Seeding source: os-specific
> $ openssl enc -aes-256-cbc -d -md sha256 -in hello.en -out hello.de -
> k garystest
> *** WARNING : deprecated key derivation used.
> Using -iter or -pbkdf2 would be better.
> bad decrypt
> 139817593476416:error:06065064:digital envelope
> routines:EVP_DecryptFinal_ex:bad decrypt:crypto/evp/evp_enc.c:612:
> $ openssl enc -aes-256-cbc -d -md sha256 -nopad -in hello.en -out
> hello.de -k garystest
> *** WARNING : deprecated key derivation used.
> Using -iter or -pbkdf2 would be better.
> more hello.en
> Salted__z▒▒0>
> ▒       K▒▒>▒▒▒
> $ openssl enc -aes-256-cbc -d -md sha256 -nopad -iter 10000 -in
> hello.en -out hello.de -k garystest
> $ more hello.en
> Salted__z▒▒0>
> ▒       K▒▒>▒▒▒
> 
> On Mon, Apr 3, 2023 at 8:44 AM Tomas Mraz <tomas at openssl.org> wrote:
> > As written in the openssl-enc manual page the default digest for
> > hashing the password was changed from MD5 to SHA256 in OpenSSL-
> > 1.1.0.
> > 
> > You need to use -md sha256 option with the enc tool on 1.1.1 to
> > decrypt
> > files from the 1.0.2 version.
> > 
> > Tomas Mraz, OpenSSL
> > 
> > On Mon, 2023-04-03 at 07:03 -0700, Gary Li wrote:
> > > Yes, with Openssl enc tool to decrypt on Ubuntu 20.04, encrypted
> > > on
> > > CentOS 7.
> > > 
> > > On Sun, Apr 2, 2023, 11:11 PM Tomas Mraz <tomas at openssl.org>
> > > wrote:
> > > > Hello,
> > > > 
> > > > is that with the openssl enc tool? Or something else?
> > > > 
> > > > Tomas Mraz, OpenSSL
> > > > 
> > > > On Fri, 2023-03-31 at 16:27 -0700, Gary Li wrote:
> > > > > HI there,
> > > > > I have files in products that are generated by Openssl
> > > > > 1.0.2k-
> > > > > fips,
> > > > > but my new development system under Ubuntu 20.04 does not
> > > > > support
> > > > > this old version, and I cannot decrypt these files with
> > > > > version
> > > > > OpenSSL 1.1.1f or 1.1.1t.
> > > > > Decryption did not have warning or error messages but the
> > > > > contents
> > > > > were wrong.
> > > > > Are there any known solutions to this issue?
> > > > > 
> > > > > Thank you in advance,
> > > > > 
> > > > > Gary
> > > > 
> > 

-- 
Tomáš Mráz, OpenSSL