diff options
| author | Ulf Möller <ulf@openssl.org> | 2001-02-07 22:24:35 +0000 |
|---|---|---|
| committer | Ulf Möller <ulf@openssl.org> | 2001-02-07 22:24:35 +0000 |
| commit | 57e7d3ce1546fc6026ffe3f1f243c54d0bb59d3e (patch) | |
| tree | 0145db13ba92d21247ffa1de25a4202603515f91 /crypto/dsa | |
| parent | a8ebe4697e99ac642fa73b20f5698091b7976f63 (diff) | |
Bleichenbacher's DSA attack
Diffstat (limited to 'crypto/dsa')
| -rw-r--r-- | crypto/dsa/dsa_ossl.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/crypto/dsa/dsa_ossl.c b/crypto/dsa/dsa_ossl.c index 4b600fa731..7304037947 100644 --- a/crypto/dsa/dsa_ossl.c +++ b/crypto/dsa/dsa_ossl.c @@ -180,13 +180,7 @@ static int dsa_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp) kinv=NULL; /* Get random k */ - for (;;) - { - if (!BN_rand(&k, BN_num_bits(dsa->q), 0, 0)) goto err; - if (BN_cmp(&k,dsa->q) >= 0) - BN_sub(&k,&k,dsa->q); - if (!BN_is_zero(&k)) break; - } + if (!BN_rand_range(&k, BN_value_one(), dsa->q)) goto err; if ((dsa->method_mont_p == NULL) && (dsa->flags & DSA_FLAG_CACHE_MONT_P)) { |