mirror/openssl
2
0
Fork 0
mirror of https://github.com/openssl/openssl.git synced 2025-03-13 19:47:47 +08:00
Code Issues Packages Projects Releases Wiki Activity

curve448: Use constant time zero check function

Browse Source 
Signed-off-by: Amitay Isaacs <amitay@ozlabs.org>

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14784)
This commit is contained in:
Amitay Isaacs 2021-02-01 16:22:16 +11:00 committed by Matt Caswell
parent ceaa6b319e
commit f684a2d783
1 changed files with 3 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
crypto/ec/curve448/arch_64/arch_intrinsics.h
View File

@ -13,13 +13,11 @@
#ifndef OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H
# define OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H
# include "internal/constant_time.h"
# define ARCH_WORD_BITS 64
static ossl_inline uint64_t word_is_zero(uint64_t a)
{
/* let's hope the compiler isn't clever enough to optimize this. */
return (((__uint128_t) a) - 1) >> 64;
}
# define word_is_zero(a) constant_time_is_zero_64(a)
static ossl_inline uint128_t widemul(uint64_t a, uint64_t b)
{