ref: 2bbc75bddc6f2a07056ff017108e35f14061041b
dir: /third_party/boringssl/src/crypto/cmac/cmac_test.cc/
/* Copyright (c) 2015, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#include <stdio.h>
#include <algorithm>
#include <vector>
#include <gtest/gtest.h>
#include <openssl/cipher.h>
#include <openssl/cmac.h>
#include <openssl/mem.h>
#include "../test/file_test.h"
#include "../test/test_util.h"
#include "../test/wycheproof_util.h"
static void test(const char *name, const uint8_t *key, size_t key_len,
const uint8_t *msg, size_t msg_len, const uint8_t *expected) {
SCOPED_TRACE(name);
// Test the single-shot API.
uint8_t out[16];
ASSERT_TRUE(AES_CMAC(out, key, key_len, msg, msg_len));
EXPECT_EQ(Bytes(expected, sizeof(out)), Bytes(out));
bssl::UniquePtr<CMAC_CTX> ctx(CMAC_CTX_new());
ASSERT_TRUE(ctx);
ASSERT_TRUE(CMAC_Init(ctx.get(), key, key_len, EVP_aes_128_cbc(), NULL));
for (unsigned chunk_size = 1; chunk_size <= msg_len; chunk_size++) {
SCOPED_TRACE(chunk_size);
ASSERT_TRUE(CMAC_Reset(ctx.get()));
size_t done = 0;
while (done < msg_len) {
size_t todo = std::min(msg_len - done, static_cast<size_t>(chunk_size));
ASSERT_TRUE(CMAC_Update(ctx.get(), msg + done, todo));
done += todo;
}
size_t out_len;
ASSERT_TRUE(CMAC_Final(ctx.get(), out, &out_len));
EXPECT_EQ(Bytes(expected, sizeof(out)), Bytes(out, out_len));
}
// Test that |CMAC_CTX_copy| works.
ASSERT_TRUE(CMAC_Reset(ctx.get()));
size_t chunk = msg_len / 2;
ASSERT_TRUE(CMAC_Update(ctx.get(), msg, chunk));
bssl::UniquePtr<CMAC_CTX> ctx2(CMAC_CTX_new());
ASSERT_TRUE(ctx2);
ASSERT_TRUE(CMAC_CTX_copy(ctx2.get(), ctx.get()));
ASSERT_TRUE(CMAC_Update(ctx2.get(), msg + chunk, msg_len - chunk));
size_t out_len;
ASSERT_TRUE(CMAC_Final(ctx2.get(), out, &out_len));
EXPECT_EQ(Bytes(expected, sizeof(out)), Bytes(out, out_len));
}
TEST(CMACTest, RFC4493TestVectors) {
static const uint8_t kKey[16] = {
0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c,
};
static const uint8_t kOut1[16] = {
0xbb, 0x1d, 0x69, 0x29, 0xe9, 0x59, 0x37, 0x28,
0x7f, 0xa3, 0x7d, 0x12, 0x9b, 0x75, 0x67, 0x46,
};
static const uint8_t kMsg2[] = {
0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
};
static const uint8_t kOut2[16] = {
0x07, 0x0a, 0x16, 0xb4, 0x6b, 0x4d, 0x41, 0x44,
0xf7, 0x9b, 0xdd, 0x9d, 0xd0, 0x4a, 0x28, 0x7c,
};
static const uint8_t kMsg3[] = {
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,
};
static const uint8_t kOut3[16] = {
0xdf, 0xa6, 0x67, 0x47, 0xde, 0x9a, 0xe6, 0x30,
0x30, 0xca, 0x32, 0x61, 0x14, 0x97, 0xc8, 0x27,
};
static const uint8_t kMsg4[] = {
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 uint8_t kOut4[16] = {
0x51, 0xf0, 0xbe, 0xbf, 0x7e, 0x3b, 0x9d, 0x92,
0xfc, 0x49, 0x74, 0x17, 0x79, 0x36, 0x3c, 0xfe,
};
test("RFC 4493 #1", kKey, sizeof(kKey), NULL, 0, kOut1);
test("RFC 4493 #2", kKey, sizeof(kKey), kMsg2, sizeof(kMsg2), kOut2);
test("RFC 4493 #3", kKey, sizeof(kKey), kMsg3, sizeof(kMsg3), kOut3);
test("RFC 4493 #4", kKey, sizeof(kKey), kMsg4, sizeof(kMsg4), kOut4);
}
TEST(CMACTest, Wycheproof) {
FileTestGTest("third_party/wycheproof_testvectors/aes_cmac_test.txt",
[](FileTest *t) {
std::string key_size, tag_size;
ASSERT_TRUE(t->GetInstruction(&key_size, "keySize"));
ASSERT_TRUE(t->GetInstruction(&tag_size, "tagSize"));
WycheproofResult result;
ASSERT_TRUE(GetWycheproofResult(t, &result));
std::vector<uint8_t> key, msg, tag;
ASSERT_TRUE(t->GetBytes(&key, "key"));
ASSERT_TRUE(t->GetBytes(&msg, "msg"));
ASSERT_TRUE(t->GetBytes(&tag, "tag"));
const EVP_CIPHER *cipher;
switch (atoi(key_size.c_str())) {
case 128:
cipher = EVP_aes_128_cbc();
break;
case 192:
cipher = EVP_aes_192_cbc();
break;
case 256:
cipher = EVP_aes_256_cbc();
break;
default:
// Some test vectors intentionally give the wrong key size. Our API
// requires the caller pick the sized CBC primitive, so these tests
// aren't useful for us.
EXPECT_FALSE(result.IsValid());
return;
}
size_t tag_len = static_cast<size_t>(atoi(tag_size.c_str())) / 8;
uint8_t out[16];
bssl::UniquePtr<CMAC_CTX> ctx(CMAC_CTX_new());
ASSERT_TRUE(ctx);
ASSERT_TRUE(CMAC_Init(ctx.get(), key.data(), key.size(), cipher, NULL));
ASSERT_TRUE(CMAC_Update(ctx.get(), msg.data(), msg.size()));
size_t out_len;
ASSERT_TRUE(CMAC_Final(ctx.get(), out, &out_len));
// Truncate the tag, if requested.
out_len = std::min(out_len, tag_len);
if (result.IsValid()) {
EXPECT_EQ(Bytes(tag), Bytes(out, out_len));
// Test the streaming API as well.
ASSERT_TRUE(CMAC_Reset(ctx.get()));
for (uint8_t b : msg) {
ASSERT_TRUE(CMAC_Update(ctx.get(), &b, 1));
}
ASSERT_TRUE(CMAC_Final(ctx.get(), out, &out_len));
out_len = std::min(out_len, tag_len);
EXPECT_EQ(Bytes(tag), Bytes(out, out_len));
} else {
// Wycheproof's invalid tests assume the implementation internally does
// the comparison, whereas our API only computes the tag. Check that
// they're not equal, but these tests are mostly not useful for us.
EXPECT_NE(Bytes(tag), Bytes(out, out_len));
}
});
}
static void RunCAVPTest(const char *path, const EVP_CIPHER *cipher,
bool is_3des) {
FileTestGTest(path, [&](FileTest *t) {
t->IgnoreAttribute("Count");
t->IgnoreAttribute("Klen");
std::string t_len, m_len, result;
ASSERT_TRUE(t->GetAttribute(&t_len, "Tlen"));
ASSERT_TRUE(t->GetAttribute(&m_len, "Mlen"));
ASSERT_TRUE(t->GetAttribute(&result, "Result"));
std::vector<uint8_t> key, msg, mac;
if (is_3des) {
std::vector<uint8_t> key2, key3;
ASSERT_TRUE(t->GetBytes(&key, "Key1"));
ASSERT_TRUE(t->GetBytes(&key2, "Key2"));
ASSERT_TRUE(t->GetBytes(&key3, "Key3"));
key.insert(key.end(), key2.begin(), key2.end());
key.insert(key.end(), key3.begin(), key3.end());
} else {
ASSERT_TRUE(t->GetBytes(&key, "Key"));
}
ASSERT_TRUE(t->GetBytes(&msg, "Msg"));
ASSERT_TRUE(t->GetBytes(&mac, "Mac"));
// CAVP's uses a non-empty Msg attribute and zero Mlen for the empty string.
if (atoi(m_len.c_str()) == 0) {
msg.clear();
} else {
EXPECT_EQ(static_cast<size_t>(atoi(m_len.c_str())), msg.size());
}
size_t tag_len = static_cast<size_t>(atoi(t_len.c_str()));
uint8_t out[16];
bssl::UniquePtr<CMAC_CTX> ctx(CMAC_CTX_new());
ASSERT_TRUE(ctx);
ASSERT_TRUE(CMAC_Init(ctx.get(), key.data(), key.size(), cipher, NULL));
ASSERT_TRUE(CMAC_Update(ctx.get(), msg.data(), msg.size()));
size_t out_len;
ASSERT_TRUE(CMAC_Final(ctx.get(), out, &out_len));
// Truncate the tag, if requested.
out_len = std::min(out_len, tag_len);
ASSERT_FALSE(result.empty());
if (result[0] == 'P') {
EXPECT_EQ(Bytes(mac), Bytes(out, out_len));
// Test the streaming API as well.
ASSERT_TRUE(CMAC_Reset(ctx.get()));
for (uint8_t b : msg) {
ASSERT_TRUE(CMAC_Update(ctx.get(), &b, 1));
}
ASSERT_TRUE(CMAC_Final(ctx.get(), out, &out_len));
out_len = std::min(out_len, tag_len);
EXPECT_EQ(Bytes(mac), Bytes(out, out_len));
} else {
// CAVP's invalid tests assume the implementation internally does the
// comparison, whereas our API only computes the tag. Check that they're
// not equal, but these tests are mostly not useful for us.
EXPECT_NE(Bytes(mac), Bytes(out, out_len));
}
});
}
TEST(CMACTest, CAVPAES128) {
RunCAVPTest("crypto/cmac/cavp_aes128_cmac_tests.txt", EVP_aes_128_cbc(),
false);
}
TEST(CMACTest, CAVPAES192) {
RunCAVPTest("crypto/cmac/cavp_aes192_cmac_tests.txt", EVP_aes_192_cbc(),
false);
}
TEST(CMACTest, CAVPAES256) {
RunCAVPTest("crypto/cmac/cavp_aes256_cmac_tests.txt", EVP_aes_256_cbc(),
false);
}
TEST(CMACTest, CAVP3DES) {
RunCAVPTest("crypto/cmac/cavp_3des_cmac_tests.txt", EVP_des_ede3_cbc(), true);
}