diff options
Diffstat (limited to 'crypto/bn/bn_rand.c')
| -rw-r--r-- | crypto/bn/bn_rand.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/crypto/bn/bn_rand.c b/crypto/bn/bn_rand.c index 9e78d4d42a..f9fb2e9e45 100644 --- a/crypto/bn/bn_rand.c +++ b/crypto/bn/bn_rand.c @@ -121,6 +121,11 @@ 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) { BN_zero(rnd); return 1; @@ -169,7 +174,7 @@ static int bnrand(int pseudorand, BIGNUM *rnd, int bits, int top, int bottom) } #endif - if (top != -1) { + if (top >= 0) { if (top) { if (bit == 0) { buf[0] = 1; |