From: tb <tb@openbsd.org>
Date: Wed, 9 Aug 2023 08:31:13 +0000 (+0000)
Subject: Compute a square using BN_mod_sqr() instead of BN_mod_mul()
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=67c0f68ce4fed348f81231b7523222c68fea5503;p=openbsd

Compute a square using BN_mod_sqr() instead of BN_mod_mul()

ok jsing
---

diff --git a/lib/libcrypto/bn/bn_blind.c b/lib/libcrypto/bn/bn_blind.c
index e13c36c5f15..1cf2a4b1f4e 100644
--- a/lib/libcrypto/bn/bn_blind.c
+++ b/lib/libcrypto/bn/bn_blind.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: bn_blind.c,v 1.38 2023/08/09 08:29:23 tb Exp $ */
+/* $OpenBSD: bn_blind.c,v 1.39 2023/08/09 08:31:13 tb Exp $ */
 /* ====================================================================
  * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
  *
@@ -228,9 +228,9 @@ BN_BLINDING_update(BN_BLINDING *b, BN_CTX *ctx)
 		if (!BN_BLINDING_setup(b, ctx))
 			goto err;
 	} else {
-		if (!BN_mod_mul(b->A, b->A, b->A, b->mod, ctx))
+		if (!BN_mod_sqr(b->A, b->A, b->mod, ctx))
 			goto err;
-		if (!BN_mod_mul(b->Ai, b->Ai, b->Ai, b->mod, ctx))
+		if (!BN_mod_sqr(b->Ai, b->Ai, b->mod, ctx))
 			goto err;
 	}