Provide EVP_PKEY_get0_hmac(). From OpenSSL 1.1.1 which is still

freely licensed.

From jsing

1 files changed, 17 insertions, 1 deletions

diff --git a/src/lib/libcrypto/evp/p_lib.c b/src/lib/libcrypto/evp/p_lib.c
index 0e4c38e218..13a9d65f28 100644
--- a/src/lib/libcrypto/evp/p_lib.c
+++ b/src/lib/libcrypto/evp/p_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: p_lib.c,v 1.24 2018/05/30 15:40:50 tb Exp $ */
+/* $OpenBSD: p_lib.c,v 1.25 2019/03/17 18:17:45 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -282,6 +282,22 @@ EVP_PKEY_get0(const EVP_PKEY *pkey)
         return pkey->pkey.ptr;
 }
 
+const unsigned char *
+EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len)
+{
+        ASN1_OCTET_STRING *os;
+
+        if (pkey->type != EVP_PKEY_HMAC) {
+                EVPerror(EVP_R_EXPECTING_AN_HMAC_KEY);
+                return NULL;
+        }
+
+        os = EVP_PKEY_get0(pkey);
+        *len = os->length;
+
+        return os->data;
+}
+
 #ifndef OPENSSL_NO_RSA
 RSA *
 EVP_PKEY_get0_RSA(EVP_PKEY *pkey)