Add HMAC functions for GOSTHASH94 and GOSTHASH94CP

GOST hash functions can be used to generate MAC using HMAC algorithm.
Add functions implementing HMAC with GOSTHASH94/GOSTHASH94CP.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>

Makefile.in

@@ -104,8 +104,9 @@ nettle_SOURCES = aes-decrypt-internal.c aes-decrypt.c \
 		 gcm-camellia256.c gcm-camellia256-meta.c \
 		 cmac.c cmac64.c cmac-aes128.c cmac-aes256.c cmac-des3.c \
 		 gost28147.c gosthash94.c gosthash94-meta.c \
-		 hmac.c hmac-md5.c hmac-ripemd160.c hmac-sha1.c \
-		 hmac-sha224.c hmac-sha256.c hmac-sha384.c hmac-sha512.c \
+		 hmac.c hmac-gosthash94.c hmac-md5.c hmac-ripemd160.c \
+		 hmac-sha1.c hmac-sha224.c hmac-sha256.c hmac-sha384.c \
+		 hmac-sha512.c \
 		 knuth-lfib.c hkdf.c \
 		 md2.c md2-meta.c md4.c md4-meta.c \
 		 md5.c md5-compress.c md5-compat.c md5-meta.c \

hmac-gosthash94.c

+/* hmac-gosthash94.c
+
+   HMAC-GOSTHASH94 message authentication code.
+
+   Copyright (C) 2016 Dmitry Eremin-Solenikov
+
+   This file is part of GNU Nettle.
+
+   GNU Nettle is free software: you can redistribute it and/or
+   modify it under the terms of either:
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
+
+   GNU Nettle is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see http://www.gnu.org/licenses/.
+*/
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "hmac.h"
+
+void
+hmac_gosthash94_set_key(struct hmac_gosthash94_ctx *ctx,
+		    size_t key_length, const uint8_t *key)
+{
+  HMAC_SET_KEY(ctx, &nettle_gosthash94, key_length, key);
+}
+
+void
+hmac_gosthash94_update(struct hmac_gosthash94_ctx *ctx,
+		   size_t length, const uint8_t *data)
+{
+  gosthash94_update(&ctx->state, length, data);
+}
+
+void
+hmac_gosthash94_digest(struct hmac_gosthash94_ctx *ctx,
+		   size_t length, uint8_t *digest)
+{
+  HMAC_DIGEST(ctx, &nettle_gosthash94, length, digest);
+}
+
+void
+hmac_gosthash94cp_set_key(struct hmac_gosthash94cp_ctx *ctx,
+		    size_t key_length, const uint8_t *key)
+{
+  HMAC_SET_KEY(ctx, &nettle_gosthash94cp, key_length, key);
+}
+
+void
+hmac_gosthash94cp_update(struct hmac_gosthash94cp_ctx *ctx,
+		   size_t length, const uint8_t *data)
+{
+  gosthash94cp_update(&ctx->state, length, data);
+}
+void
+hmac_gosthash94cp_digest(struct hmac_gosthash94cp_ctx *ctx,
+		   size_t length, uint8_t *digest)
+{
+  HMAC_DIGEST(ctx, &nettle_gosthash94cp, length, digest);
+}

hmac.h

@@ -36,6 +36,7 @@
 
 #include "nettle-meta.h"
 
+#include "gosthash94.h"
 #include "md5.h"
 #include "ripemd160.h"
 #include "sha1.h"
@@ -68,6 +69,12 @@ extern "C" {
 #define hmac_sha512_set_key nettle_hmac_sha512_set_key
 #define hmac_sha512_update nettle_hmac_sha512_update
 #define hmac_sha512_digest nettle_hmac_sha512_digest
+#define hmac_gosthash94_set_key nettle_hmac_gosthash94_set_key
+#define hmac_gosthash94_update nettle_hmac_gosthash94_update
+#define hmac_gosthash94_digest nettle_hmac_gosthash94_digest
+#define hmac_gosthash94cp_set_key nettle_hmac_gosthash94cp_set_key
+#define hmac_gosthash94cp_update nettle_hmac_gosthash94cp_update
+#define hmac_gosthash94cp_digest nettle_hmac_gosthash94cp_digest
 
 void
 hmac_set_key(void *outer, void *inner, void *state,
@@ -203,6 +210,36 @@ void
 hmac_sha384_digest(struct hmac_sha512_ctx *ctx,
 		   size_t length, uint8_t *digest);
 
+/* hmac-gosthash94 */
+struct hmac_gosthash94_ctx HMAC_CTX(struct gosthash94_ctx);
+
+void
+hmac_gosthash94_set_key(struct hmac_gosthash94_ctx *ctx,
+			size_t key_length, const uint8_t *key);
+
+void
+hmac_gosthash94_update(struct hmac_gosthash94_ctx *ctx,
+		       size_t length, const uint8_t *data);
+
+  void
+hmac_gosthash94_digest(struct hmac_gosthash94_ctx *ctx,
+		       size_t length, uint8_t *digest);
+
+struct hmac_gosthash94cp_ctx HMAC_CTX(struct gosthash94cp_ctx);
+
+void
+hmac_gosthash94cp_set_key(struct hmac_gosthash94cp_ctx *ctx,
+			  size_t key_length, const uint8_t *key);
+
+void
+hmac_gosthash94cp_update(struct hmac_gosthash94cp_ctx *ctx,
+			 size_t length, const uint8_t *data);
+
+void
+hmac_gosthash94cp_digest(struct hmac_gosthash94cp_ctx *ctx,
+			 size_t length, uint8_t *digest);
+
+
 #ifdef __cplusplus
 }
 #endif

testsuite/hmac-test.c

@@ -894,4 +894,18 @@ test_main(void)
 		 "b1ff68a1de45509fbe4da9a433922655"));
 
   /* Test case AUTH512-3 from same document seems broken. */
+
+  HMAC_TEST(gosthash94,
+	    SHEX("000102030405060708090a0b0c0d0e0f"
+		 "101112131415161718191a1b1c1d1e1f"),
+	    SHEX("0126bdb87800af214341456563780100"),
+	    SHEX("bfebe25f051bfef6ac858babb0abc409"
+		 "bfd2e334ab847bc0b0d056517c7d94c5"));
+
+  HMAC_TEST(gosthash94cp,
+	    SHEX("000102030405060708090a0b0c0d0e0f"
+		 "101112131415161718191a1b1c1d1e1f"),
+	    SHEX("0126bdb87800af214341456563780100"),
+	    SHEX("bad70b61c41095bc47e1141cfaed4272"
+		 "6a5ceebd62ce75dbbb9ad76cda9f72f7"));
 }