From 1b561f846b060aedbadbe38a4aef0bb347dbf2e0 Mon Sep 17 00:00:00 2001
From: tb <>
Date: Sun, 18 Feb 2018 14:58:12 +0000
Subject: Provide {DH,DSA}_set0_key(). Requested by sthen.

ok jsing
---
 src/lib/libcrypto/dsa/dsa.h     |  3 ++-
 src/lib/libcrypto/dsa/dsa_lib.c | 20 +++++++++++++++++++-
 2 files changed, 21 insertions(+), 2 deletions(-)

(limited to 'src/lib/libcrypto/dsa')

diff --git a/src/lib/libcrypto/dsa/dsa.h b/src/lib/libcrypto/dsa/dsa.h
index 21e5baa235..20db7f91c1 100644
--- a/src/lib/libcrypto/dsa/dsa.h
+++ b/src/lib/libcrypto/dsa/dsa.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: dsa.h,v 1.25 2018/02/18 12:50:58 tb Exp $ */
+/* $OpenBSD: dsa.h,v 1.26 2018/02/18 14:58:12 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -261,6 +261,7 @@ void DSA_get0_pqg(const DSA *d, const BIGNUM **p, const BIGNUM **q,
     const BIGNUM **g);
 int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g);
 void DSA_get0_key(const DSA *d, const BIGNUM **pub_key, const BIGNUM **priv_key);
+int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key);
 
 #define EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, nbits) \
 	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, \
diff --git a/src/lib/libcrypto/dsa/dsa_lib.c b/src/lib/libcrypto/dsa/dsa_lib.c
index 2dec8567f5..772c939d31 100644
--- a/src/lib/libcrypto/dsa/dsa_lib.c
+++ b/src/lib/libcrypto/dsa/dsa_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: dsa_lib.c,v 1.25 2018/02/18 12:50:58 tb Exp $ */
+/* $OpenBSD: dsa_lib.c,v 1.26 2018/02/18 14:58:12 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -346,3 +346,21 @@ DSA_get0_key(const DSA *d, const BIGNUM **pub_key, const BIGNUM **priv_key)
 	if (priv_key != NULL)
 		*priv_key = d->priv_key;
 }
+
+int
+DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key)
+{
+	if (d->pub_key == NULL && pub_key == NULL)
+		return 0;
+
+	if (pub_key != NULL) {
+		BN_free(d->pub_key);
+		d->pub_key = pub_key;
+	}
+	if (priv_key != NULL) {
+		BN_free(d->priv_key);
+		d->priv_key = priv_key;
+	}
+
+	return 1;
+}
-- 
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