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| author | Samuel Weiser <samuel.weiser@iaik.tugraz.at> | 2017-09-29 13:29:25 +0200 |
|---|---|---|
| committer | Rich Salz <rsalz@openssl.org> | 2017-09-29 13:52:18 -0400 |
| commit | f9cbf470180841966338db1f4c28d99ec4debec4 (patch) | |
| tree | bb6664ef8b70a9ddd39948a2bf20a5fd12e1c403 /crypto/dsa | |
| parent | d9a38e859dfe30a112c421dc7b32821370efd805 (diff) | |
Added const-time flag to DSA key decoding to avoid potential leak of privkey
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4440)
(cherry picked from commit 6364475a990449ef33fc270ac00472f7210220f2)
Diffstat (limited to 'crypto/dsa')
| -rw-r--r-- | crypto/dsa/dsa_ameth.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/crypto/dsa/dsa_ameth.c b/crypto/dsa/dsa_ameth.c index c4fa105747..aac2530951 100644 --- a/crypto/dsa/dsa_ameth.c +++ b/crypto/dsa/dsa_ameth.c @@ -258,6 +258,7 @@ static int dsa_priv_decode(EVP_PKEY *pkey, 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; |