hmac: add support for SM3 hash function

Add support for calculating HMAC using SM3 hash functions.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>

8 files changed, 136 insertions, 2 deletions

diff --git a/Makefile.in b/Makefile.in
index 77f474c3..0590c370 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -117,10 +117,10 @@ nettle_SOURCES = aes-decrypt-internal.c aes-decrypt.c aes-decrypt-table.c \
 		 gost28147.c gosthash94.c gosthash94-meta.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 hmac-streebog.c \
+		 hmac-sha512.c hmac-streebog.c hmac-sm3.c \
 		 hmac-md5-meta.c hmac-ripemd160-meta.c hmac-sha1-meta.c \
 		 hmac-sha224-meta.c hmac-sha256-meta.c hmac-sha384-meta.c \
-		 hmac-sha512-meta.c hmac-streebog-meta.c \
+		 hmac-sha512-meta.c hmac-streebog-meta.c hmac-sm3-meta.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 \
diff --git a/hmac-sm3-meta.c b/hmac-sm3-meta.c
new file mode 100644
index 00000000..d3d7f3d2
--- /dev/null
+++ b/hmac-sm3-meta.c
@@ -0,0 +1,47 @@
+/* hmac-sm3-meta.c
+
+   Copyright (C) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
+
+   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 "nettle-meta.h"
+
+#include "hmac.h"
+
+static void
+hmac_sm3_set_key_wrapper (void *ctx, const uint8_t *key)
+{
+  hmac_sm3_set_key (ctx, SM3_DIGEST_SIZE, key);
+}
+
+const struct nettle_mac nettle_hmac_sm3
+= _NETTLE_HMAC(hmac_sm3, SM3);
diff --git a/hmac-sm3.c b/hmac-sm3.c
new file mode 100644
index 00000000..decb4a2d
--- /dev/null
+++ b/hmac-sm3.c
@@ -0,0 +1,59 @@
+/* hmac-sm3.c
+
+   HMAC-SM3 message authentication code.
+
+   Copyright (C) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
+
+   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_sm3_set_key(struct hmac_sm3_ctx *ctx,
+		 size_t key_length, const uint8_t *key)
+{
+  HMAC_SET_KEY(ctx, &nettle_sm3, key_length, key);
+}
+
+void
+hmac_sm3_update(struct hmac_sm3_ctx *ctx,
+		size_t length, const uint8_t *data)
+{
+  sm3_update(&ctx->state, length, data);
+}
+
+void
+hmac_sm3_digest(struct hmac_sm3_ctx *ctx,
+		size_t length, uint8_t *digest)
+{
+  HMAC_DIGEST(ctx, &nettle_sm3, length, digest);
+}
diff --git a/hmac.h b/hmac.h
index 72c8fd57..453a67af 100644
--- a/hmac.h
+++ b/hmac.h
@@ -42,6 +42,7 @@
 #include "sha1.h"
 #include "sha2.h"
 #include "streebog.h"
+#include "sm3.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -81,6 +82,9 @@ extern "C" {
 #define hmac_streebog512_set_key nettle_hmac_streebog512_set_key
 #define hmac_streebog512_update nettle_hmac_streebog512_update
 #define hmac_streebog512_digest nettle_hmac_streebog512_digest
+#define hmac_sm3_set_key nettle_hmac_sm3_set_key
+#define hmac_sm3_update nettle_hmac_sm3_update
+#define hmac_sm3_digest nettle_hmac_sm3_digest
 
 void
 hmac_set_key(void *outer, void *inner, void *state,
@@ -273,6 +277,21 @@ void
 hmac_streebog256_digest(struct hmac_streebog256_ctx *ctx,
 		   size_t length, uint8_t *digest);
 
+/* hmac-sm3 */
+struct hmac_sm3_ctx HMAC_CTX(struct sm3_ctx);
+
+void
+hmac_sm3_set_key(struct hmac_sm3_ctx *ctx,
+		 size_t key_length, const uint8_t *key);
+
+void
+hmac_sm3_update(struct hmac_sm3_ctx *ctx,
+		size_t length, const uint8_t *data);
+
+void
+hmac_sm3_digest(struct hmac_sm3_ctx *ctx,
+		size_t length, uint8_t *digest);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/nettle-meta-macs.c b/nettle-meta-macs.c
index 5e8f8713..40aa6dcd 100644
--- a/nettle-meta-macs.c
+++ b/nettle-meta-macs.c
@@ -50,6 +50,7 @@ const struct nettle_mac * const _nettle_macs[] = {
   &nettle_hmac_sha512,
   &nettle_hmac_streebog256,
   &nettle_hmac_streebog512,
+  &nettle_hmac_sm3,
   NULL
 };
 
diff --git a/nettle-meta.h b/nettle-meta.h
index 664321d8..d684947e 100644
--- a/nettle-meta.h
+++ b/nettle-meta.h
@@ -291,6 +291,7 @@ extern const struct nettle_mac nettle_hmac_sha384;
 extern const struct nettle_mac nettle_hmac_sha512;
 extern const struct nettle_mac nettle_hmac_streebog256;
 extern const struct nettle_mac nettle_hmac_streebog512;
+extern const struct nettle_mac nettle_hmac_sm3;
 
 #ifdef __cplusplus
 }
diff --git a/testsuite/hmac-test.c b/testsuite/hmac-test.c
index 348f7920..0d1fb44c 100644
--- a/testsuite/hmac-test.c
+++ b/testsuite/hmac-test.c
@@ -883,4 +883,10 @@ test_main(void)
 	    SHEX("0126bdb87800af214341456563780100"),
 	    SHEX("a1aa5f7de402d7b3d323f2991c8d4534"
 	         "013137010a83754fd0af6d7cd4922ed9"));
+
+  HMAC_TEST(sm3,
+	    SDATA("monkey monkey monkey monkey"),
+	    SDATA("abc"),
+            SHEX("7a9388e2ca5343b5d76e7c2c3d84f239"
+                 "f306c0b60d5e0dc4d2771e42860a6a2b"));
 }
diff --git a/testsuite/meta-mac-test.c b/testsuite/meta-mac-test.c
index adbd4326..0ff82810 100644
--- a/testsuite/meta-mac-test.c
+++ b/testsuite/meta-mac-test.c
@@ -14,6 +14,7 @@ const char* macs[] = {
   "hmac_sha512",
   "hmac_streebog256",
   "hmac_streebog512",
+  "hmac_sm3",
 };
 
 void