diff options
| -rw-r--r-- | crypto/bn/bn_rand.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/crypto/bn/bn_rand.c b/crypto/bn/bn_rand.c index c0d1a32292..214768311a 100644 --- a/crypto/bn/bn_rand.c +++ b/crypto/bn/bn_rand.c @@ -225,8 +225,7 @@ int BN_generate_dsa_nonce(BIGNUM *out, const BIGNUM *range, goto err; /* We copy |priv| into a local buffer to avoid exposing its length. */ - todo = sizeof(priv->d[0]) * priv->top; - if (todo > sizeof(private_bytes)) { + if (BN_bn2binpad(priv, private_bytes, sizeof(private_bytes)) < 0) { /* * No reasonable DSA or ECDSA key should have a private key this * large and we don't handle this case in order to avoid leaking the @@ -235,8 +234,6 @@ int BN_generate_dsa_nonce(BIGNUM *out, const BIGNUM *range, BNerr(BN_F_BN_GENERATE_DSA_NONCE, BN_R_PRIVATE_KEY_TOO_LARGE); goto err; } - memcpy(private_bytes, priv->d, todo); - memset(private_bytes + todo, 0, sizeof(private_bytes) - todo); for (done = 0; done < num_k_bytes;) { if (RAND_priv_bytes(random_bytes, sizeof(random_bytes)) != 1) |