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Change to mitigate branch prediction attacks

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Submitted by: Matthew D Wood
Reviewed by: Bodo Moeller
This commit is contained in:
Bodo Möller
2007-03-28 00:15:28 +00:00
parent b506821d43
commit bd31fb2145
16 changed files with 595 additions and 42 deletions
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2
crypto/dsa/dsa_ossl.c
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@@ -238,7 +238,7 @@ static int dsa_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp)
while (BN_is_zero(&k));
if ((dsa->flags & DSA_FLAG_NO_EXP_CONSTTIME) == 0)
{
BN_set_flags(&k, BN_FLG_EXP_CONSTTIME);
BN_set_flags(&k, BN_FLG_CONSTTIME);
}
if (dsa->flags & DSA_FLAG_CACHE_MONT_P)