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/* test_cmac.c
*
* Copyright (C) 2006-2025 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* wolfSSL 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 a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
#include <tests/unit.h>
#ifdef NO_INLINE
#include <wolfssl/wolfcrypt/misc.h>
#else
#define WOLFSSL_MISC_INCLUDED
#include <wolfcrypt/src/misc.c>
#endif
#include <wolfssl/wolfcrypt/cmac.h>
#include <wolfssl/wolfcrypt/types.h>
#include <tests/api/api.h>
#include <tests/api/test_cmac.h>
/*
* Testing wc_InitCmac()
*/
int test_wc_InitCmac(void)
{
EXPECT_DECLS;
#if defined(WOLFSSL_CMAC) && !defined(NO_AES)
Cmac cmac1;
Cmac cmac2;
Cmac cmac3;
/* AES 128 key. */
byte key1[] = "\x01\x02\x03\x04\x05\x06\x07\x08"
"\x09\x10\x11\x12\x13\x14\x15\x16";
/* AES 192 key. */
byte key2[] = "\x01\x02\x03\x04\x05\x06\x07\x08"
"\x09\x01\x11\x12\x13\x14\x15\x16"
"\x01\x02\x03\x04\x05\x06\x07\x08";
/* AES 256 key. */
byte key3[] = "\x01\x02\x03\x04\x05\x06\x07\x08"
"\x09\x01\x11\x12\x13\x14\x15\x16"
"\x01\x02\x03\x04\x05\x06\x07\x08"
"\x09\x01\x11\x12\x13\x14\x15\x16";
word32 key1Sz = (word32)sizeof(key1) - 1;
word32 key2Sz = (word32)sizeof(key2) - 1;
word32 key3Sz = (word32)sizeof(key3) - 1;
int type = WC_CMAC_AES;
(void)key1;
(void)key1Sz;
(void)key2;
(void)key2Sz;
XMEMSET(&cmac1, 0, sizeof(Cmac));
XMEMSET(&cmac2, 0, sizeof(Cmac));
XMEMSET(&cmac3, 0, sizeof(Cmac));
#ifdef WOLFSSL_AES_128
ExpectIntEQ(wc_InitCmac(&cmac1, key1, key1Sz, type, NULL), 0);
#endif
#ifdef WOLFSSL_AES_192
wc_AesFree(&cmac1.aes);
ExpectIntEQ(wc_InitCmac(&cmac2, key2, key2Sz, type, NULL), 0);
#endif
#ifdef WOLFSSL_AES_256
wc_AesFree(&cmac2.aes);
ExpectIntEQ(wc_InitCmac(&cmac3, key3, key3Sz, type, NULL), 0);
#endif
wc_AesFree(&cmac3.aes);
/* Test bad args. */
ExpectIntEQ(wc_InitCmac(NULL, key3, key3Sz, type, NULL),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_InitCmac(&cmac3, NULL, key3Sz, type, NULL),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_InitCmac(&cmac3, key3, 0, type, NULL),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_InitCmac(&cmac3, key3, key3Sz, 0, NULL),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
#endif
return EXPECT_RESULT();
} /* END test_wc_InitCmac */
/*
* Testing wc_CmacUpdate()
*/
int test_wc_CmacUpdate(void)
{
EXPECT_DECLS;
#if defined(WOLFSSL_CMAC) && !defined(NO_AES) && defined(WOLFSSL_AES_128)
Cmac cmac;
byte key[] = {
0x64, 0x4c, 0xbf, 0x12, 0x85, 0x9d, 0xf0, 0x55,
0x7e, 0xa9, 0x1f, 0x08, 0xe0, 0x51, 0xff, 0x27
};
byte in[] = "\xe2\xb4\xb6\xf9\x48\x44\x02\x64"
"\x5c\x47\x80\x9e\xd5\xa8\x3a\x17"
"\xb3\x78\xcf\x85\x22\x41\x74\xd9"
"\xa0\x97\x39\x71\x62\xf1\x8e\x8f"
"\xf4";
word32 inSz = (word32)sizeof(in) - 1;
word32 keySz = (word32)sizeof(key);
int type = WC_CMAC_AES;
XMEMSET(&cmac, 0, sizeof(Cmac));
ExpectIntEQ(wc_InitCmac(&cmac, key, keySz, type, NULL), 0);
ExpectIntEQ(wc_CmacUpdate(&cmac, in, inSz), 0);
/* Test bad args. */
ExpectIntEQ(wc_CmacUpdate(NULL, in, inSz), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_CmacUpdate(&cmac, NULL, 30), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
wc_AesFree(&cmac.aes);
#endif
return EXPECT_RESULT();
} /* END test_wc_CmacUpdate */
/*
* Testing wc_CmacFinal()
*/
int test_wc_CmacFinal(void)
{
EXPECT_DECLS;
#if defined(WOLFSSL_CMAC) && !defined(NO_AES) && defined(WOLFSSL_AES_128)
Cmac cmac;
byte key[] = {
0x64, 0x4c, 0xbf, 0x12, 0x85, 0x9d, 0xf0, 0x55,
0x7e, 0xa9, 0x1f, 0x08, 0xe0, 0x51, 0xff, 0x27
};
byte msg[] = {
0xe2, 0xb4, 0xb6, 0xf9, 0x48, 0x44, 0x02, 0x64,
0x5c, 0x47, 0x80, 0x9e, 0xd5, 0xa8, 0x3a, 0x17,
0xb3, 0x78, 0xcf, 0x85, 0x22, 0x41, 0x74, 0xd9,
0xa0, 0x97, 0x39, 0x71, 0x62, 0xf1, 0x8e, 0x8f,
0xf4
};
/* Test vectors from CMACGenAES128.rsp from
* http://csrc.nist.gov/groups/STM/cavp/block-cipher-modes.html#cmac
* Per RFC4493 truncation of lsb is possible.
*/
byte expMac[] = {
0x4e, 0x6e, 0xc5, 0x6f, 0xf9, 0x5d, 0x0e, 0xae,
0x1c, 0xf8, 0x3e, 0xfc, 0xf4, 0x4b, 0xeb
};
byte mac[WC_AES_BLOCK_SIZE];
word32 msgSz = (word32)sizeof(msg);
word32 keySz = (word32)sizeof(key);
word32 macSz = sizeof(mac);
word32 badMacSz = 17;
int expMacSz = sizeof(expMac);
int type = WC_CMAC_AES;
XMEMSET(&cmac, 0, sizeof(Cmac));
XMEMSET(mac, 0, macSz);
ExpectIntEQ(wc_InitCmac(&cmac, key, keySz, type, NULL), 0);
ExpectIntEQ(wc_CmacUpdate(&cmac, msg, msgSz), 0);
#if (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5, 3)) && !defined(HAVE_SELFTEST)
/* Pass in bad args. */
ExpectIntEQ(wc_CmacFinalNoFree(NULL, mac, &macSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_CmacFinalNoFree(&cmac, NULL, &macSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_CmacFinalNoFree(&cmac, mac, &badMacSz),
WC_NO_ERR_TRACE(BUFFER_E));
/* For the last call, use the API with implicit wc_CmacFree(). */
ExpectIntEQ(wc_CmacFinal(&cmac, mac, &macSz), 0);
ExpectIntEQ(XMEMCMP(mac, expMac, expMacSz), 0);
#else /* !HAVE_FIPS || FIPS>=5.3 */
ExpectIntEQ(wc_CmacFinal(&cmac, mac, &macSz), 0);
ExpectIntEQ(XMEMCMP(mac, expMac, expMacSz), 0);
/* Pass in bad args. */
ExpectIntEQ(wc_CmacFinal(NULL, mac, &macSz), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_CmacFinal(&cmac, NULL, &macSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_CmacFinal(&cmac, mac, &badMacSz), WC_NO_ERR_TRACE(BUFFER_E));
#endif /* !HAVE_FIPS || FIPS>=5.3 */
#endif
return EXPECT_RESULT();
} /* END test_wc_CmacFinal */
/*
* Testing wc_AesCmacGenerate() && wc_AesCmacVerify()
*/
int test_wc_AesCmacGenerate(void)
{
EXPECT_DECLS;
#if defined(WOLFSSL_CMAC) && !defined(NO_AES) && defined(WOLFSSL_AES_128)
byte key[] = {
0x26, 0xef, 0x8b, 0x40, 0x34, 0x11, 0x7d, 0x9e,
0xbe, 0xc0, 0xc7, 0xfc, 0x31, 0x08, 0x54, 0x69
};
byte msg[] = "\x18\x90\x49\xef\xfd\x7c\xf9\xc8"
"\xf3\x59\x65\xbc\xb0\x97\x8f\xd4";
byte expMac[] = "\x29\x5f\x2f\x71\xfc\x58\xe6\xf6"
"\x3d\x32\x65\x4c\x66\x23\xc5";
byte mac[WC_AES_BLOCK_SIZE];
word32 keySz = sizeof(key);
word32 macSz = sizeof(mac);
word32 msgSz = sizeof(msg) - 1;
word32 expMacSz = sizeof(expMac) - 1;
XMEMSET(mac, 0, macSz);
ExpectIntEQ(wc_AesCmacGenerate(mac, &macSz, msg, msgSz, key, keySz), 0);
ExpectIntEQ(XMEMCMP(mac, expMac, expMacSz), 0);
/* Pass in bad args. */
ExpectIntEQ(wc_AesCmacGenerate(NULL, &macSz, msg, msgSz, key, keySz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_AesCmacGenerate(mac, &macSz, msg, msgSz, NULL, keySz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_AesCmacGenerate(mac, &macSz, msg, msgSz, key, 0),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_AesCmacGenerate(mac, &macSz, NULL, msgSz, key, keySz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_AesCmacVerify(mac, macSz, msg, msgSz, key, keySz), 0);
/* Test bad args. */
ExpectIntEQ(wc_AesCmacVerify(NULL, macSz, msg, msgSz, key, keySz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_AesCmacVerify(mac, 0, msg, msgSz, key, keySz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_AesCmacVerify(mac, macSz, msg, msgSz, NULL, keySz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_AesCmacVerify(mac, macSz, msg, msgSz, key, 0),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_AesCmacVerify(mac, macSz, NULL, msgSz, key, keySz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
#endif
return EXPECT_RESULT();
} /* END test_wc_AesCmacGenerate */
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