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authorAndy Polyakov <appro@openssl.org>2014-07-02 19:35:50 +0200
committerAndy Polyakov <appro@openssl.org>2014-07-02 19:35:50 +0200
commiteca441b2b4d33d2a18d163ef9b4b3aff14251c73 (patch)
treeb9e97c1a8106b1f774a05819a3059c8dc0ef2798
parent5cc99c6cf5e908df6b00b04af7f08e99c0698c7b (diff)
downloadopenssl-new-eca441b2b4d33d2a18d163ef9b4b3aff14251c73.tar.gz
bn_exp.c: fix x86_64-specific crash with one-word modulus.
PR: #3397
-rw-r--r--crypto/bn/bn_exp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/bn/bn_exp.c b/crypto/bn/bn_exp.c
index c121122f3c..2d051b2c35 100644
--- a/crypto/bn/bn_exp.c
+++ b/crypto/bn/bn_exp.c
@@ -909,7 +909,7 @@ int BN_mod_exp_mont_consttime(BIGNUM *rr, const BIGNUM *a, const BIGNUM *p,
/* Dedicated window==4 case improves 512-bit RSA sign by ~15%, but as
* 512-bit RSA is hardly relevant, we omit it to spare size... */
- if (window==5)
+ if (window==5 && top>1)
{
void bn_mul_mont_gather5(BN_ULONG *rp,const BN_ULONG *ap,
const void *table,const BN_ULONG *np,