diff options
| -rw-r--r-- | crypto/bn/bn_word.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/crypto/bn/bn_word.c b/crypto/bn/bn_word.c index f3bdde969c..cd59baa2c4 100644 --- a/crypto/bn/bn_word.c +++ b/crypto/bn/bn_word.c @@ -182,11 +182,16 @@ int BN_mul_word(BIGNUM *a, BN_ULONG w) w&=BN_MASK2; if (a->top) { - ll=bn_mul_words(a->d,a->d,a->top,w); - if (ll) + if (w == 0) + BN_zero(a); + else { - if (bn_wexpand(a,a->top+1) == NULL) return(0); - a->d[a->top++]=ll; + ll=bn_mul_words(a->d,a->d,a->top,w); + if (ll) + { + if (bn_wexpand(a,a->top+1) == NULL) return(0); + a->d[a->top++]=ll; + } } } return(1); |