The branch master has been updated
via 6364475a990449ef33fc270ac00472f7210220f2 (commit)
from 681acb311bb7c68c9310d2e96bf2cf0e35443a22 (commit)
- Log -----------------------------------------------------------------
commit 6364475a990449ef33fc270ac00472f7210220f2
Author: Samuel Weiser <samuel.wei...@iaik.tugraz.at>
Date: Fri Sep 29 13:29:25 2017 +0200
Added const-time flag to DSA key decoding to avoid potential leak of privkey
Reviewed-by: Richard Levitte <levi...@openssl.org>
Reviewed-by: Rich Salz <rs...@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4440)
-----------------------------------------------------------------------
Summary of changes:
crypto/dsa/dsa_ameth.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/crypto/dsa/dsa_ameth.c b/crypto/dsa/dsa_ameth.c
index 7c0428d..fbb9121 100644
--- a/crypto/dsa/dsa_ameth.c
+++ b/crypto/dsa/dsa_ameth.c
@@ -175,6 +175,7 @@ static int dsa_priv_decode(EVP_PKEY *pkey, const
PKCS8_PRIV_KEY_INFO *p8)
goto dsaerr;
}
+ BN_set_flags(dsa->priv_key, BN_FLG_CONSTTIME);
if (!BN_mod_exp(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p, ctx)) {
DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_BN_ERROR);
goto dsaerr;
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