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avoid SIGSEGV

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Submitted by: Nils Larsch, Douglas Stebila
This commit is contained in:
Bodo Möller 2002-08-07 07:53:47 +00:00
parent 5bf738737d
commit 7a8645d171
1 changed files with 3 additions and 3 deletions
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6
crypto/bn/bn_gf2m.c
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@ -316,10 +316,10 @@ int BN_GF2m_mod_arr(BIGNUM *r, const BIGNUM *a, const unsigned int p[])
int n, dN, d0, d1;
BN_ULONG zz, *z;
/* Since the algorithm does reduction in place, if a == r, copy the
/* Since the algorithm does reduction in the r value, if a != r, copy the
* contents of a into r so we can do reduction in r.
*/
if ((a != NULL) && (a->d != r->d))
if (a != r)
{
if (!bn_wexpand(r, a->top)) return 0;
for (j = 0; j < a->top; j++)
@ -427,7 +427,7 @@ int BN_GF2m_mod_mul_arr(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const unsig
BN_CTX_start(ctx);
if ((s = BN_CTX_get(ctx)) == NULL) goto err;
zlen = a->top + b->top;
zlen = a->top + b->top + 4;
if (!bn_wexpand(s, zlen)) goto err;
s->top = zlen;