From d7038a771c2277c3a450e9f86549e2e3f13b4569 Mon Sep 17 00:00:00 2001
From: tb <tb@openbsd.org>
Date: Wed, 5 Jan 2022 20:39:04 +0000
Subject: [PATCH] Prepare to provide ECDSA_SIG_get0_{r,s}()

ok inoguchi jsing
---
 lib/libcrypto/ecdsa/ecdsa.h    |  7 ++++++-
 lib/libcrypto/ecdsa/ecs_asn1.c | 14 +++++++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/lib/libcrypto/ecdsa/ecdsa.h b/lib/libcrypto/ecdsa/ecdsa.h
index c4e107eee58..7b0a25468a6 100644
--- a/lib/libcrypto/ecdsa/ecdsa.h
+++ b/lib/libcrypto/ecdsa/ecdsa.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ecdsa.h,v 1.8 2019/01/19 01:17:41 tb Exp $ */
+/* $OpenBSD: ecdsa.h,v 1.9 2022/01/05 20:39:04 tb Exp $ */
 /**
  * \file   crypto/ecdsa/ecdsa.h Include file for the OpenSSL ECDSA functions
  * \author Written by Nils Larsch for the OpenSSL project
@@ -140,6 +140,11 @@ ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **sig, const unsigned char **pp, long len);
  */
 void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
 
+#if defined(LIBRESSL_OPAQUE_ECDSA) || defined(LIBRESSL_CRYPTO_INTERNAL)
+const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig);
+const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig);
+#endif
+
 /** Setter for r and s fields of ECDSA_SIG
  *  \param  sig  pointer to ECDSA_SIG pointer
  *  \param  r    pointer to BIGNUM for r (may be NULL)
diff --git a/lib/libcrypto/ecdsa/ecs_asn1.c b/lib/libcrypto/ecdsa/ecs_asn1.c
index e463858669c..9a7a04468bf 100644
--- a/lib/libcrypto/ecdsa/ecs_asn1.c
+++ b/lib/libcrypto/ecdsa/ecs_asn1.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ecs_asn1.c,v 1.9 2018/03/17 15:24:44 tb Exp $ */
+/* $OpenBSD: ecs_asn1.c,v 1.10 2022/01/05 20:39:04 tb Exp $ */
 /* ====================================================================
  * Copyright (c) 2000-2002 The OpenSSL Project.  All rights reserved.
  *
@@ -123,6 +123,18 @@ ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps)
 		*ps = sig->s;
 }
 
+const BIGNUM *
+ECDSA_SIG_get0_r(const ECDSA_SIG *sig)
+{
+	return sig->r;
+}
+
+const BIGNUM *
+ECDSA_SIG_get0_s(const ECDSA_SIG *sig)
+{
+	return sig->s;
+}
+
 int
 ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s)
 {
-- 
2.20.1