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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <keymaster/km_openssl/hmac.h>
#include <gtest/gtest.h>
#include <string.h>
#include "android_keymaster_test_utils.h"
using std::string;
namespace keymaster {
namespace test {
struct HmacTest {
const char* data;
const char* key;
uint8_t digest[32];
};
static const HmacTest kHmacTests[] = {
{
"Test Using Larger Than Block-Size Key - Hash Key First",
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
{
0x60, 0xe4, 0x31, 0x59, 0x1e, 0xe0, 0xb6, 0x7f, 0x0d, 0x8a, 0x26,
0xaa, 0xcb, 0xf5, 0xb7, 0x7f, 0x8e, 0x0b, 0xc6, 0x21, 0x37, 0x28,
0xc5, 0x14, 0x05, 0x46, 0x04, 0x0f, 0x0e, 0xe3, 0x7f, 0x54,
},
},
{
"The test message for the MD2, MD5, and SHA-1 hashing algorithms.",
"46697265666f7820616e64205468756e64657242697264206172652061776573"
"6f6d652100",
{
0x05, 0x75, 0x9a, 0x9e, 0x70, 0x5e, 0xe7, 0x44, 0xe2, 0x46, 0x4b,
0x92, 0x22, 0x14, 0x22, 0xe0, 0x1b, 0x92, 0x8a, 0x0c, 0xfe, 0xf5,
0x49, 0xe9, 0xa7, 0x1b, 0x56, 0x7d, 0x1d, 0x29, 0x40, 0x48,
},
},
};
TEST(HmacTest, SHA256) {
for (size_t i = 0; i < 2; i++) {
const HmacTest& test(kHmacTests[i]);
HmacSha256 hmac;
const string key = hex2str(test.key);
Buffer key_buffer(key.data(), key.size());
ASSERT_TRUE(hmac.Init(key_buffer));
uint8_t digest_copy[sizeof(test.digest)];
memcpy(digest_copy, test.digest, sizeof(test.digest));
Buffer digest_buffer(reinterpret_cast<uint8_t*>(digest_copy), sizeof(digest_copy));
Buffer data_buffer(test.data, strlen(test.data));
EXPECT_TRUE(hmac.Verify(data_buffer, digest_buffer));
digest_copy[16] ^= 0x80;
digest_buffer.Reinitialize(reinterpret_cast<uint8_t*>(digest_copy), sizeof(digest_copy));
EXPECT_FALSE(hmac.Verify(data_buffer, digest_buffer));
}
}
} // namespace test
} // namespace keymaster