diff options
Diffstat (limited to 'crypto/bn/bn_rand.c')
| -rw-r--r-- | crypto/bn/bn_rand.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/crypto/bn/bn_rand.c b/crypto/bn/bn_rand.c index 5ad80507b0..c577fd169d 100644 --- a/crypto/bn/bn_rand.c +++ b/crypto/bn/bn_rand.c @@ -20,15 +20,14 @@ static int bnrand(int pseudorand, BIGNUM *rnd, int bits, int top, int bottom) int ret = 0, bit, bytes, mask; time_t tim; - if (bits < 0 || (bits == 1 && top > 0)) { - BNerr(BN_F_BNRAND, BN_R_BITS_TOO_SMALL); - return 0; - } - if (bits == 0) { + if (top != BN_RAND_TOP_ANY || bottom != BN_RAND_BOTTOM_ANY) + goto toosmall; BN_zero(rnd); return 1; } + if (bits < 0 || (bits == 1 && top > 0)) + goto toosmall; bytes = (bits + 7) / 8; bit = (bits - 1) % 8; @@ -88,6 +87,10 @@ static int bnrand(int pseudorand, BIGNUM *rnd, int bits, int top, int bottom) OPENSSL_clear_free(buf, bytes); bn_check_top(rnd); return (ret); + +toosmall: + BNerr(BN_F_BNRAND, BN_R_BITS_TOO_SMALL); + return 0; } int BN_rand(BIGNUM *rnd, int bits, int top, int bottom) |