From 7a8645d1716d7f84435b0f3d8d2fd122d6f75113 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Bodo=20M=C3=B6ller?= Date: Wed, 7 Aug 2002 07:53:47 +0000 Subject: [PATCH] avoid SIGSEGV Submitted by: Nils Larsch, Douglas Stebila --- crypto/bn/bn_gf2m.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/crypto/bn/bn_gf2m.c b/crypto/bn/bn_gf2m.c index c969685c87..8bd17e0e7c 100644 --- a/crypto/bn/bn_gf2m.c +++ b/crypto/bn/bn_gf2m.c @@ -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; -- 2.25.1