From 7d0d0996aa0e85734eaf5c8a3e6bd9e62604c166 Mon Sep 17 00:00:00 2001
From: Bodo Möller <bodo@openssl.org>
Date: Sun, 8 Apr 2001 18:23:44 +0000
Subject: binary algorithm for modular inversion

---
 crypto/bn/bn_mod.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'crypto/bn/bn_mod.c')

diff --git a/crypto/bn/bn_mod.c b/crypto/bn/bn_mod.c
index 92fe11684c..5cf82480d7 100644
--- a/crypto/bn/bn_mod.c
+++ b/crypto/bn/bn_mod.c
@@ -150,8 +150,8 @@ int BN_mod_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m, BN_
 int BN_mod_add_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m)
 	{
 	if (!BN_add(r, a, b)) return 0;
-	if (BN_cmp(r, m) >= 0)
-		return BN_sub(r, r, m);
+	if (BN_ucmp(r, m) >= 0)
+		return BN_usub(r, r, m);
 	return 1;
 	}
 
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