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Problem: bn_mul_normal() misbehaves if the size of b is 0.

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Solution: multiply a with 0, putting the result in r, and return.
This commit is contained in:
Richard Levitte 2000-12-13 15:29:29 +00:00
parent 765e531159
commit 53b407da84
1 changed files with 7 additions and 1 deletions
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8
crypto/bn/bn_mul.c
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@ -1110,7 +1110,13 @@ void bn_mul_normal(BN_ULONG *r, BN_ULONG *a, int na, BN_ULONG *b, int nb)
} }
rr= &(r[na]); rr= &(r[na]);
rr[0]=bn_mul_words(r,a,na,b[0]); if (nb <= 0)
{
(void)bn_mul_words(r,a,na,0);
return;
}
else
rr[0]=bn_mul_words(r,a,na,b[0]);
for (;;) for (;;)
{ {