From 7bb0769b9eedd491ce3716b8b8b435d8d9411fdf Mon Sep 17 00:00:00 2001
From: jsing <jsing@openbsd.org>
Date: Fri, 3 Feb 2023 04:47:59 +0000
Subject: [PATCH] Turn BN_mod_{ct,nonct}() into symbols.

Also use accurate/useful variables names.

ok tb@
---
 lib/libcrypto/bn/bn_local.h | 11 ++++++-----
 lib/libcrypto/bn/bn_mod.c   | 14 +++++++++++++-
 2 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/lib/libcrypto/bn/bn_local.h b/lib/libcrypto/bn/bn_local.h
index bcd6fa27329..904eaa0f05a 100644
--- a/lib/libcrypto/bn/bn_local.h
+++ b/lib/libcrypto/bn/bn_local.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: bn_local.h,v 1.6 2023/01/28 16:33:34 jsing Exp $ */
+/* $OpenBSD: bn_local.h,v 1.7 2023/02/03 04:47:59 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -680,12 +680,13 @@ int BN_mod_exp_mont_ct(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
     const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
 int BN_mod_exp_mont_nonct(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
     const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
-int BN_div_nonct(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d,
+int BN_div_nonct(BIGNUM *q, BIGNUM *r, const BIGNUM *n, const BIGNUM *d,
     BN_CTX *ctx);
-int BN_div_ct(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d,
+int BN_div_ct(BIGNUM *q, BIGNUM *r, const BIGNUM *n, const BIGNUM *d,
     BN_CTX *ctx);
-#define BN_mod_ct(rem,m,d,ctx) BN_div_ct(NULL,(rem),(m),(d),(ctx))
-#define BN_mod_nonct(rem,m,d,ctx) BN_div_nonct(NULL,(rem),(m),(d),(ctx))
+int BN_mod_ct(BIGNUM *r, const BIGNUM *a, const BIGNUM *m, BN_CTX *ctx);
+int BN_mod_nonct(BIGNUM *r, const BIGNUM *a, const BIGNUM *m, BN_CTX *ctx);
+
 BIGNUM *BN_mod_inverse_ct(BIGNUM *ret, const BIGNUM *a, const BIGNUM *n,
     BN_CTX *ctx);
 BIGNUM *BN_mod_inverse_nonct(BIGNUM *ret, const BIGNUM *a, const BIGNUM *n,
diff --git a/lib/libcrypto/bn/bn_mod.c b/lib/libcrypto/bn/bn_mod.c
index cc8f8dea00a..938b53d7253 100644
--- a/lib/libcrypto/bn/bn_mod.c
+++ b/lib/libcrypto/bn/bn_mod.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: bn_mod.c,v 1.14 2022/11/26 16:08:51 tb Exp $ */
+/* $OpenBSD: bn_mod.c,v 1.15 2023/02/03 04:47:59 jsing Exp $ */
 /* Includes code written by Lenka Fibikova <fibikova@exp-math.uni-essen.de>
  * for the OpenSSL project. */
 /* ====================================================================
@@ -115,6 +115,18 @@
 
 #include "bn_local.h"
 
+int
+BN_mod_ct(BIGNUM *r, const BIGNUM *a, const BIGNUM *m, BN_CTX *ctx)
+{
+	return BN_div_ct(NULL, r, a, m, ctx);
+}
+
+int
+BN_mod_nonct(BIGNUM *r, const BIGNUM *a, const BIGNUM *m, BN_CTX *ctx)
+{
+	return BN_div_nonct(NULL, r, a, m, ctx);
+}
+
 int
 BN_nnmod(BIGNUM *r, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx)
 {
-- 
2.20.1