diff options
| author | Simon L. B. Nielsen <simon@FreeBSD.org> | 2010-11-21 22:45:18 +0000 |
|---|---|---|
| committer | Simon L. B. Nielsen <simon@FreeBSD.org> | 2010-11-21 22:45:18 +0000 |
| commit | f2c43d19b91f8847c1dfd87721254b44f963d9a2 (patch) | |
| tree | 4710d37952455e247de95eedf55ea05ee4df9f69 /crypto/dsa/dsa_ossl.c | |
| parent | 0cedaa6c89235ed396068f2ebf546c9a909439e1 (diff) | |
Notes
Diffstat (limited to 'crypto/dsa/dsa_ossl.c')
| -rw-r--r-- | crypto/dsa/dsa_ossl.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/crypto/dsa/dsa_ossl.c b/crypto/dsa/dsa_ossl.c index 412cf1d88b69..172776080669 100644 --- a/crypto/dsa/dsa_ossl.c +++ b/crypto/dsa/dsa_ossl.c @@ -178,7 +178,8 @@ static DSA_SIG *dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa) if (!BN_mod_mul(&xr,dsa->priv_key,r,dsa->q,ctx)) goto err;/* s = xr */ if (!BN_add(s, &xr, &m)) goto err; /* s = m + xr */ if (BN_cmp(s,dsa->q) > 0) - BN_sub(s,s,dsa->q); + if (!BN_sub(s,s,dsa->q)) + goto err; if (!BN_mod_mul(s,s,kinv,dsa->q,ctx)) goto err; ret=DSA_SIG_new(); |