[openssl-dev] [openssl.org #3810] [PATCH] Improved P256 ECC performance by means of a dedicated function for modular inversion modulo the P256 group order

[Gueron, Shay via RT]

Hello all,

This patch is a contribution to OpenSSL.

It concerns the P256 ECC implementation.

The patch improves upon our previous submission, by providing a dedicated function to perform modular inversion modulo the P256 group order.

Results:
The performance improvements, for single threaded applications, compared to the current (development) version of OpenSSL are as follows.

(measured by "openssl speed" utility)


On Architecture Codename Haswell:
ECDSA sign: 1.28X
ECDSA verify: 1.10X

On Architecture  Broadwell:
ECDSA sign: 1.42X
ECDSA verify: 1.18X

We license the whole submission under BSD license.

Developers and authors:
***************************************************************************
Shay Gueron (1, 2), and Vlad Krasnov (3)
(1) University of Haifa, Israel
(2) Intel Corporation, Israel Development Center, Haifa, Israel
(3) CloudFlare, Inc.
***************************************************************************




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