From: jsing <jsing@openbsd.org>
Date: Sun, 29 Jan 2023 15:33:43 +0000 (+0000)
Subject: Set BN_FLG_CONSTTIME on benchmark inputs.
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=964a7cf02a85761c0eb130151ab5b8173994c818;p=openbsd

Set BN_FLG_CONSTTIME on benchmark inputs.

The public APIs still change behaviour based on BN_FLG_CONSTTIME - set it
to avoid benchmark noise.
---

diff --git a/regress/lib/libcrypto/bn/bn_mul_div.c b/regress/lib/libcrypto/bn/bn_mul_div.c
index 28f8f756469..77805b9a802 100644
--- a/regress/lib/libcrypto/bn/bn_mul_div.c
+++ b/regress/lib/libcrypto/bn/bn_mul_div.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bn_mul_div.c,v 1.3 2023/01/29 15:26:55 jsing Exp $ */
+/*	$OpenBSD: bn_mul_div.c,v 1.4 2023/01/29 15:33:43 jsing Exp $ */
 /*
  * Copyright (c) 2023 Joel Sing <jsing@openbsd.org>
  *
@@ -358,6 +358,9 @@ benchmark_run(const struct benchmark *bm, int seconds)
 	if ((q = BN_CTX_get(bn_ctx)) == NULL)
 		errx(1, "BN_CTX_get");
 
+	BN_set_flags(a, BN_FLG_CONSTTIME);
+	BN_set_flags(b, BN_FLG_CONSTTIME);
+
 	if (!bm->setup(a, bm->a_bits, b, bm->b_bits, r, q))
 		errx(1, "benchmark setup failed");