public/openssl
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Fix the checks of factor_size/modulus_bitsize

Browse source 
The factor_size/modulus_bitsize are required to be 1024/1536/2048.

Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Saša Nedvědický <sashan@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25751)
This commit is contained in:
Zhiguo Zhou 2025-01-20 11:29:50 +08:00
parent c18b6f4c52
commit b41e0bf168
1 changed files with 2 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
crypto/bn/rsaz_exp_x2.c
View file

@ -231,7 +231,7 @@ int ossl_rsaz_mod_exp_avx512_x2(BN_ULONG *res1,
AMM amm = NULL;
int avx512ifma = !!ossl_rsaz_avx512ifma_eligible();
if (factor_size % 512)
if (factor_size != 1024 && factor_size != 1536 && factor_size != 2048)
goto err;
amm = ossl_rsaz_amm52_x1[(factor_size / 512 - 2) * 2 + avx512ifma];
@ -382,7 +382,7 @@ int RSAZ_mod_exp_x2_ifma256(BN_ULONG *out,
*/
# define DAMS(r,a,m,k0) damm((r),(a),(a),(m),(k0))
if (modulus_bitsize % 512)
if (modulus_bitsize != 1024 && modulus_bitsize != 1536 && modulus_bitsize != 2048)
goto err;
damm = ossl_rsaz_amm52_x2[(modulus_bitsize / 512 - 2) * 2 + avx512ifma];