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| 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/bn/bn_rand.c | |
| parent | a8ebe4697e99ac642fa73b20f5698091b7976f63 (diff) | |
| download | openssl-57e7d3ce1546fc6026ffe3f1f243c54d0bb59d3e.zip openssl-57e7d3ce1546fc6026ffe3f1f243c54d0bb59d3e.tar.gz openssl-57e7d3ce1546fc6026ffe3f1f243c54d0bb59d3e.tar.bz2 | |
Bleichenbacher's DSA attack
Diffstat (limited to 'crypto/bn/bn_rand.c')
| -rw-r--r-- | crypto/bn/bn_rand.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/crypto/bn/bn_rand.c b/crypto/bn/bn_rand.c index bab4510..f2c79b5 100644 --- a/crypto/bn/bn_rand.c +++ b/crypto/bn/bn_rand.c @@ -168,3 +168,14 @@ int BN_bntest_rand(BIGNUM *rnd, int bits, int top, int bottom) return bnrand(2, rnd, bits, top, bottom); } #endif + +/* random number r: min <= r < max */ +int BN_rand_range(BIGNUM *r, BIGNUM *min, BIGNUM *max) + { + int n = BN_num_bits(max); + do + { + if (!BN_rand(r, n, 0, 0)) return 0; + } while ((min && BN_cmp(r, min) < 0) || BN_cmp(r, max) >= 0); + return 1; + } |