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We did not have a test of the low level CMAC APIs so we add one. This is heavily based on the HMAC test. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from openssl#12107)
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/* | ||
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved. | ||
* | ||
* Licensed under the Apache License 2.0 (the "License"). You may not use | ||
* this file except in compliance with the License. You can obtain a copy | ||
* in the file LICENSE in the source distribution or at | ||
* https://www.openssl.org/source/license.html | ||
*/ | ||
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#include <stdio.h> | ||
#include <string.h> | ||
#include <stdlib.h> | ||
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#include "internal/nelem.h" | ||
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#include <openssl/cmac.h> | ||
#include <openssl/aes.h> | ||
#include <openssl/evp.h> | ||
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#include "testutil.h" | ||
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static const char xtskey[32] = { | ||
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, | ||
0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, | ||
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f | ||
}; | ||
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static struct test_st { | ||
const char key[32]; | ||
int key_len; | ||
const unsigned char data[64]; | ||
int data_len; | ||
const char *mac; | ||
} test[3] = { | ||
{ | ||
{ | ||
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, | ||
0x0b, 0x0c, 0x0d, 0x0e, 0x0f | ||
}, | ||
16, | ||
"My test data", | ||
12, | ||
"29cec977c48f63c200bd5c4a6881b224" | ||
}, | ||
{ | ||
{ | ||
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, | ||
0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, | ||
0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f | ||
}, | ||
32, | ||
"My test data", | ||
12, | ||
"db6493aa04e4761f473b2b453c031c9a" | ||
}, | ||
{ | ||
{ | ||
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, | ||
0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, | ||
0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f | ||
}, | ||
32, | ||
"My test data again", | ||
18, | ||
"65c11c75ecf590badd0a5e56cbb8af60" | ||
}, | ||
}; | ||
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static char *pt(unsigned char *md, unsigned int len); | ||
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static int test_cmac_bad(void) | ||
{ | ||
CMAC_CTX *ctx = NULL; | ||
int ret = 0; | ||
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ctx = CMAC_CTX_new(); | ||
if (!TEST_ptr(ctx) | ||
|| !TEST_false(CMAC_Init(ctx, NULL, 0, NULL, NULL)) | ||
|| !TEST_false(CMAC_Update(ctx, test[0].data, test[0].data_len)) | ||
/* Should be able to pass cipher first, and then key */ | ||
|| !TEST_true(CMAC_Init(ctx, NULL, 0, EVP_aes_128_cbc(), NULL)) | ||
/* Must have a key */ | ||
|| !TEST_false(CMAC_Update(ctx, test[0].data, test[0].data_len)) | ||
/* Now supply the key */ | ||
|| !TEST_true(CMAC_Init(ctx, test[0].key, test[0].key_len, NULL, NULL)) | ||
/* Update should now work */ | ||
|| !TEST_true(CMAC_Update(ctx, test[0].data, test[0].data_len)) | ||
/* XTS is not a suitable cipher to use */ | ||
|| !TEST_false(CMAC_Init(ctx, xtskey, sizeof(xtskey), EVP_aes_128_xts(), | ||
NULL)) | ||
|| !TEST_false(CMAC_Update(ctx, test[0].data, test[0].data_len))) | ||
goto err; | ||
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ret = 1; | ||
err: | ||
CMAC_CTX_free(ctx); | ||
return ret; | ||
} | ||
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static int test_cmac_run(void) | ||
{ | ||
char *p; | ||
CMAC_CTX *ctx = NULL; | ||
unsigned char buf[AES_BLOCK_SIZE]; | ||
size_t len; | ||
int ret = 0; | ||
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ctx = CMAC_CTX_new(); | ||
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if (!TEST_true(CMAC_Init(ctx, test[0].key, test[0].key_len, | ||
EVP_aes_128_cbc(), NULL)) | ||
|| !TEST_true(CMAC_Update(ctx, test[0].data, test[0].data_len)) | ||
|| !TEST_true(CMAC_Final(ctx, buf, &len))) | ||
goto err; | ||
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p = pt(buf, len); | ||
if (!TEST_str_eq(p, test[0].mac)) | ||
goto err; | ||
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if (!TEST_true(CMAC_Init(ctx, test[1].key, test[1].key_len, | ||
EVP_aes_256_cbc(), NULL)) | ||
|| !TEST_true(CMAC_Update(ctx, test[1].data, test[1].data_len)) | ||
|| !TEST_true(CMAC_Final(ctx, buf, &len))) | ||
goto err; | ||
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p = pt(buf, len); | ||
if (!TEST_str_eq(p, test[1].mac)) | ||
goto err; | ||
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if (!TEST_true(CMAC_Init(ctx, test[2].key, test[2].key_len, NULL, NULL)) | ||
|| !TEST_true(CMAC_Update(ctx, test[2].data, test[2].data_len)) | ||
|| !TEST_true(CMAC_Final(ctx, buf, &len))) | ||
goto err; | ||
p = pt(buf, len); | ||
if (!TEST_str_eq(p, test[2].mac)) | ||
goto err; | ||
/* Test reusing a key */ | ||
if (!TEST_true(CMAC_Init(ctx, NULL, 0, NULL, NULL)) | ||
|| !TEST_true(CMAC_Update(ctx, test[2].data, test[2].data_len)) | ||
|| !TEST_true(CMAC_Final(ctx, buf, &len))) | ||
goto err; | ||
p = pt(buf, len); | ||
if (!TEST_str_eq(p, test[2].mac)) | ||
goto err; | ||
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/* Test setting the cipher and key separately */ | ||
if (!TEST_true(CMAC_Init(ctx, NULL, 0, EVP_aes_256_cbc(), NULL)) | ||
|| !TEST_true(CMAC_Init(ctx, test[2].key, test[2].key_len, NULL, NULL)) | ||
|| !TEST_true(CMAC_Update(ctx, test[2].data, test[2].data_len)) | ||
|| !TEST_true(CMAC_Final(ctx, buf, &len))) | ||
goto err; | ||
p = pt(buf, len); | ||
if (!TEST_str_eq(p, test[2].mac)) | ||
goto err; | ||
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ret = 1; | ||
err: | ||
CMAC_CTX_free(ctx); | ||
return ret; | ||
} | ||
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static int test_cmac_copy(void) | ||
{ | ||
char *p; | ||
CMAC_CTX *ctx = NULL, *ctx2 = NULL; | ||
unsigned char buf[AES_BLOCK_SIZE]; | ||
size_t len; | ||
int ret = 0; | ||
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ctx = CMAC_CTX_new(); | ||
ctx2 = CMAC_CTX_new(); | ||
if (!TEST_ptr(ctx) || !TEST_ptr(ctx2)) | ||
goto err; | ||
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if (!TEST_true(CMAC_Init(ctx, test[0].key, test[0].key_len, | ||
EVP_aes_128_cbc(), NULL)) | ||
|| !TEST_true(CMAC_Update(ctx, test[0].data, test[0].data_len)) | ||
|| !TEST_true(CMAC_CTX_copy(ctx2, ctx)) | ||
|| !TEST_true(CMAC_Final(ctx2, buf, &len))) | ||
goto err; | ||
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p = pt(buf, len); | ||
if (!TEST_str_eq(p, test[0].mac)) | ||
goto err; | ||
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ret = 1; | ||
err: | ||
CMAC_CTX_free(ctx2); | ||
CMAC_CTX_free(ctx); | ||
return ret; | ||
} | ||
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static char *pt(unsigned char *md, unsigned int len) | ||
{ | ||
unsigned int i; | ||
static char buf[80]; | ||
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for (i = 0; i < len; i++) | ||
sprintf(&(buf[i * 2]), "%02x", md[i]); | ||
return buf; | ||
} | ||
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int setup_tests(void) | ||
{ | ||
ADD_TEST(test_cmac_bad); | ||
ADD_TEST(test_cmac_run); | ||
ADD_TEST(test_cmac_copy); | ||
return 1; | ||
} | ||
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#! /usr/bin/env perl | ||
# Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. | ||
# | ||
# Licensed under the Apache License 2.0 (the "License"). You may not use | ||
# this file except in compliance with the License. You can obtain a copy | ||
# in the file LICENSE in the source distribution or at | ||
# https://www.openssl.org/source/license.html | ||
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use OpenSSL::Test::Simple; | ||
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simple_test("test_cmac", "cmactest", "cmac"); |