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| author | Adam Langley <agl@google.com> | 2017-04-20 09:20:50 -0700 |
|---|---|---|
| committer | Rich Salz <rsalz@openssl.org> | 2017-04-20 16:10:10 -0400 |
| commit | 6e64c560663f5542fdc2580bb7b030c19b6919e4 (patch) | |
| tree | cab54406234402d95b8f1fae5ad7b57db7f7cd28 /crypto/bn/bn_prime.c | |
| parent | c0452248ea1a59a41023a4765ef7d9825e80a62b (diff) | |
| download | openssl-6e64c560663f5542fdc2580bb7b030c19b6919e4.zip openssl-6e64c560663f5542fdc2580bb7b030c19b6919e4.tar.gz openssl-6e64c560663f5542fdc2580bb7b030c19b6919e4.tar.bz2 | |
Small primes are primes too.
Previously, BN_is_prime_fasttest_ex, when doing trial-division, would
check whether the candidate is a multiple of a number of small primes
and, if so, reject it. However, three is a multiple of three yet is
still a prime number.
This change accepts small primes as prime when doing trial-division.
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3264)
Diffstat (limited to 'crypto/bn/bn_prime.c')
| -rw-r--r-- | crypto/bn/bn_prime.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/bn/bn_prime.c b/crypto/bn/bn_prime.c index bbb124f..9295aeb 100644 --- a/crypto/bn/bn_prime.c +++ b/crypto/bn/bn_prime.c @@ -176,7 +176,7 @@ int BN_is_prime_fasttest_ex(const BIGNUM *a, int checks, BN_CTX *ctx_passed, if (mod == (BN_ULONG)-1) goto err; if (mod == 0) - return 0; + return BN_is_word(a, primes[i]); } if (!BN_GENCB_call(cb, 1, -1)) goto err; |