Remove legacy sign/verify from EVP_MD.

This removes m_dss.c, m_dss1.c, and m_ecdsa.c and the corresponding
public API EVP_{dss,dss1,ecdsa}().

This is basically the following OpenSSL commit. The mentioned change in
RSA is already present in rsa/rsa_pmeth.c.

ok inoguchi jsing

commit 7f572e958b13041056f377a62d3219633cfb1e8a
Author: Dr. Stephen Henson <steve@openssl.org>
Date:   Wed Dec 2 13:57:04 2015 +0000

    Remove legacy sign/verify from EVP_MD.

    Remove sign/verify and required_pkey_type fields of EVP_MD: these are a
    legacy from when digests were linked to public key types. All signing is
    now handled by the corresponding EVP_PKEY_METHOD.

    Only allow supported digest types in RSA EVP_PKEY_METHOD: other algorithms
    already block unsupported types.

    Remove now obsolete EVP_dss1() and EVP_ecdsa().

    Reviewed-by: Richard Levitte <levitte@openssl.org>

Plus OpenSSL commit 625a9baf11c1dd94f17e5876b6ee8d6271b3921d for m_dss.c

1 files changed, 1 insertions, 6 deletions

diff --git a/src/lib/libcrypto/evp/m_null.c b/src/lib/libcrypto/evp/m_null.c
index 86f5a08688..4334decb99 100644
--- a/src/lib/libcrypto/evp/m_null.c
+++ b/src/lib/libcrypto/evp/m_null.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: m_null.c,v 1.10 2021/12/12 21:30:13 tb Exp $ */
+/* $OpenBSD: m_null.c,v 1.11 2022/01/14 08:38:06 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -92,11 +92,6 @@ static const EVP_MD null_md = {
         .final = final,
         .copy = NULL,
         .cleanup = NULL,
-        .sign = NULL,
-        .verify = NULL,
-        .required_pkey_type = {
-                0, 0, 0, 0,
-        },
         .block_size = 0,
         .ctx_size = sizeof(EVP_MD *),
 };