unit: Add NIST examples for AES-CMAC hashing function

.gitignore

@@ -23,6 +23,7 @@ client/iwctl
 monitor/iwmon
 tools/hwsim
 doc/iwmon.1
+unit/test-cmac-aes
 unit/test-hmac-md5
 unit/test-hmac-sha1
 unit/test-hmac-sha256

Makefile.am

@@ -72,7 +72,8 @@ noinst_PROGRAMS = tools/hwsim
 
 tools_hwsim_LDADD = ell/libell-internal.la
 
-unit_tests = unit/test-hmac-md5 unit/test-hmac-sha1 unit/test-hmac-sha256 \
+unit_tests = unit/test-cmac-aes \
+		unit/test-hmac-md5 unit/test-hmac-sha1 unit/test-hmac-sha256 \
 		unit/test-pbkdf2-sha1 unit/test-prf-sha1 \
 		unit/test-crypto unit/test-eapol unit/test-mpdu \
 		unit/test-ie unit/test-ssid-to-utf8
@@ -81,6 +82,10 @@ if MAINTAINER_MODE
 noinst_PROGRAMS += $(unit_tests)
 endif
 
+unit_test_cmac_aes_SOURCES = unit/test-cmac-aes.c \
+					src/aes.h src/aes.c
+unit_test_cmac_aes_LDADD = ell/libell-internal.la
+
 unit_test_hmac_md5_SOURCES = unit/test-hmac-md5.c \
 					src/md5.h src/md5.c
 unit_test_hmac_md5_LDADD = ell/libell-internal.la

unit/test-cmac-aes.c

@@ -0,0 +1,151 @@
+/*
+ *
+ *  Wireless daemon for Linux
+ *
+ *  Copyright (C) 2013-2014  Intel Corporation. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <ell/ell.h>
+
+#include "src/aes.h"
+
+struct cmac_data {
+	const void *key;
+	size_t key_len;
+	const void *msg;
+	size_t msg_len;
+	const unsigned char *tag;
+	size_t tag_len;
+};
+
+static void cmac_test(const void *data)
+{
+	const struct cmac_data *test = data;
+	unsigned char tag[test->tag_len];
+	char tag_str[test->tag_len * 2 + 1];
+	unsigned int i;
+	bool result;
+
+	for (i = 0; i < test->tag_len; i++)
+		sprintf(tag_str + (i * 2), "%02x", test->tag[i]);
+
+	printf("Tag    = %s (%zu octects)\n", tag_str, test->tag_len);
+
+	result = cmac_aes(test->key, test->key_len,
+				test->msg, test->msg_len, tag, test->tag_len);
+
+	assert(result == true);
+
+	for (i = 0; i < test->tag_len; i++)
+		sprintf(tag_str + (i * 2), "%02x", tag[i]);
+
+	printf("Result = %s\n", tag_str);
+
+	assert(memcmp(test->tag, tag, test->tag_len) == 0);
+}
+
+static const unsigned char key[16] = {
+			0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
+			0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c,
+};
+
+static const unsigned char msg[64] = {
+			0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
+			0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
+			0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c,
+			0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
+			0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11,
+			0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
+			0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17,
+			0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10,
+};
+
+static const unsigned char tag_1[16] = {
+			0xbb, 0x1d, 0x69, 0x29, 0xe9, 0x59, 0x37, 0x28,
+			0x7f, 0xa3, 0x7d, 0x12, 0x9b, 0x75, 0x67, 0x46,
+};
+
+static const unsigned char tag_2[16] = {
+			0x07, 0x0a, 0x16, 0xb4, 0x6b, 0x4d, 0x41, 0x44,
+			0xf7, 0x9b, 0xdd, 0x9d, 0xd0, 0x4a, 0x28, 0x7c,
+};
+
+static const unsigned char tag_3[16] = {
+			0xdf, 0xa6, 0x67, 0x47, 0xde, 0x9a, 0xe6, 0x30,
+			0x30, 0xca, 0x32, 0x61, 0x14, 0x97, 0xc8, 0x27,
+};
+
+static const unsigned char tag_4[16] = {
+			0x51, 0xf0, 0xbe, 0xbf, 0x7e, 0x3b, 0x9d, 0x92,
+			0xfc, 0x49, 0x74, 0x17, 0x79, 0x36, 0x3c, 0xfe,
+};
+
+static const struct cmac_data example_1 = {
+	.key		= key,
+	.key_len	= sizeof(key),
+	.msg		= msg,
+	.msg_len	= 0,
+	.tag		= tag_1,
+	.tag_len	= sizeof(tag_1),
+};
+
+static const struct cmac_data example_2 = {
+	.key		= key,
+	.key_len	= sizeof(key),
+	.msg		= msg,
+	.msg_len	= 16,
+	.tag		= tag_2,
+	.tag_len	= sizeof(tag_2),
+};
+
+static const struct cmac_data example_3 = {
+	.key		= key,
+	.key_len	= sizeof(key),
+	.msg		= msg,
+	.msg_len	= 40,
+	.tag		= tag_3,
+	.tag_len	= sizeof(tag_3),
+};
+
+static const struct cmac_data example_4 = {
+	.key		= key,
+	.key_len	= sizeof(key),
+	.msg		= msg,
+	.msg_len	= 64,
+	.tag		= tag_4,
+	.tag_len	= sizeof(tag_4),
+};
+
+int main(int argc, char *argv[])
+{
+	l_test_init(&argc, &argv);
+
+	l_test_add("/cmac-aes/Example 1", cmac_test, &example_1);
+	l_test_add("/cmac-aes/Example 2", cmac_test, &example_2);
+	l_test_add("/cmac-aes/Exmaple 3", cmac_test, &example_3);
+	l_test_add("/cmac-aes/Exmaple 4", cmac_test, &example_4);
+
+	return l_test_run();
+}