Prepare to provide DH_get0_{p,q,g,{priv,pub}_key}()

These are accessors that allow getting one specific DH member. They are
less error prone than the current getters DH_get0_{pqg,key}(). They
are used by many ports and will also be used in base for this reason.

Who can remember whether the pub_key or the priv_key goes first in
DH_get0_key()?

ok inoguchi jsing

1 files changed, 8 insertions, 1 deletions

diff --git a/src/lib/libcrypto/dh/dh.h b/src/lib/libcrypto/dh/dh.h
index f569f3f7c3..8e57c191c4 100644
--- a/src/lib/libcrypto/dh/dh.h
+++ b/src/lib/libcrypto/dh/dh.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: dh.h,v 1.26 2021/11/29 19:34:51 tb Exp $ */
+/* $OpenBSD: dh.h,v 1.27 2022/01/05 20:30:16 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -199,6 +199,13 @@ void DH_get0_pqg(const DH *dh, const BIGNUM **p, const BIGNUM **q,
 int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
 void DH_get0_key(const DH *dh, const BIGNUM **pub_key, const BIGNUM **priv_key);
 int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);
+#if defined(LIBRESSL_OPAQUE_DH) || defined(LIBRESSL_CRYPTO_INTERNAL)
+const BIGNUM *DH_get0_p(const DH *dh);
+const BIGNUM *DH_get0_q(const DH *dh);
+const BIGNUM *DH_get0_g(const DH *dh);
+const BIGNUM *DH_get0_priv_key(const DH *dh);
+const BIGNUM *DH_get0_pub_key(const DH *dh);
+#endif
 void DH_clear_flags(DH *dh, int flags);
 int DH_test_flags(const DH *dh, int flags);
 void DH_set_flags(DH *dh, int flags);