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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <string>
#include "crypto/hmac.h"
#include "testing/gtest/include/gtest/gtest.h"
static const size_t kSHA1DigestSize = 20;
static const size_t kSHA256DigestSize = 32;
static const char* kSimpleKey =
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA";
static const size_t kSimpleKeyLength = 80;
static const struct {
const char *data;
const int data_len;
const char *digest;
} kSimpleHmacCases[] = {
{ "Test Using Larger Than Block-Size Key - Hash Key First", 54,
"\xAA\x4A\xE5\xE1\x52\x72\xD0\x0E\x95\x70\x56\x37\xCE\x8A\x3B\x55"
"\xED\x40\x21\x12" },
{ "Test Using Larger Than Block-Size Key and Larger "
"Than One Block-Size Data", 73,
"\xE8\xE9\x9D\x0F\x45\x23\x7D\x78\x6D\x6B\xBA\xA7\x96\x5C\x78\x08"
"\xBB\xFF\x1A\x91" }
};
TEST(HMACTest, HmacSafeBrowsingResponseTest) {
const int kKeySize = 16;
// Client key.
const unsigned char kClientKey[kKeySize] =
{ 0xbf, 0xf6, 0x83, 0x4b, 0x3e, 0xa3, 0x23, 0xdd,
0x96, 0x78, 0x70, 0x8e, 0xa1, 0x9d, 0x3b, 0x40 };
// Expected HMAC result using kMessage and kClientKey.
const unsigned char kReceivedHmac[kSHA1DigestSize] =
{ 0xb9, 0x3c, 0xd6, 0xf0, 0x49, 0x47, 0xe2, 0x52,
0x59, 0x7a, 0xbd, 0x1f, 0x2b, 0x4c, 0x83, 0xad,
0x86, 0xd2, 0x48, 0x85 };
const char kMessage[] =
"n:1896\ni:goog-malware-shavar\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shav"
"ar_s_445-450\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shavar_s_439-444\nu:s"
".ytimg.com/safebrowsing/rd/goog-malware-shavar_s_437\nu:s.ytimg.com/safebrowsi"
"ng/rd/goog-malware-shavar_s_436\nu:s.ytimg.com/safebrowsing/rd/goog-malware-sh"
"avar_s_433-435\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shavar_s_431\nu:s.y"
"timg.com/safebrowsing/rd/goog-malware-shavar_s_430\nu:s.ytimg.com/safebrowsing"
"/rd/goog-malware-shavar_s_429\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shav"
"ar_s_428\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shavar_s_426\nu:s.ytimg.c"
"om/safebrowsing/rd/goog-malware-shavar_s_424\nu:s.ytimg.com/safebrowsing/rd/go"
"og-malware-shavar_s_423\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shavar_s_4"
"22\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shavar_s_420\nu:s.ytimg.com/saf"
"ebrowsing/rd/goog-malware-shavar_s_419\nu:s.ytimg.com/safebrowsing/rd/goog-mal"
"ware-shavar_s_414\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shavar_s_409-411"
"\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shavar_s_405\nu:s.ytimg.com/safeb"
"rowsing/rd/goog-malware-shavar_s_404\nu:s.ytimg.com/safebrowsing/rd/goog-malwa"
"re-shavar_s_402\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shavar_s_401\nu:s."
"ytimg.com/safebrowsing/rd/goog-malware-shavar_a_973-978\nu:s.ytimg.com/safebro"
"wsing/rd/goog-malware-shavar_a_937-972\nu:s.ytimg.com/safebrowsing/rd/goog-mal"
"ware-shavar_a_931-936\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shavar_a_925"
"-930\nu:s.ytimg.com/safebrowsing/rd/goog-malware-shavar_a_919-924\ni:goog-phis"
"h-shavar\nu:s.ytimg.com/safebrowsing/rd/goog-phish-shavar_a_2633\nu:s.ytimg.co"
"m/safebrowsing/rd/goog-phish-shavar_a_2632\nu:s.ytimg.com/safebrowsing/rd/goog"
"-phish-shavar_a_2629-2631\nu:s.ytimg.com/safebrowsing/rd/goog-phish-shavar_a_2"
"626-2628\nu:s.ytimg.com/safebrowsing/rd/goog-phish-shavar_a_2625\n";
std::string message_data(kMessage);
crypto::HMAC hmac(crypto::HMAC::SHA1);
ASSERT_TRUE(hmac.Init(kClientKey, kKeySize));
unsigned char calculated_hmac[kSHA1DigestSize];
EXPECT_TRUE(hmac.Sign(message_data, calculated_hmac, kSHA1DigestSize));
EXPECT_EQ(0, memcmp(kReceivedHmac, calculated_hmac, kSHA1DigestSize));
}
// Test cases from RFC 2202 section 3
TEST(HMACTest, RFC2202TestCases) {
const struct {
const char *key;
const int key_len;
const char *data;
const int data_len;
const char *digest;
} cases[] = {
{ "\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B"
"\x0B\x0B\x0B\x0B", 20,
"Hi There", 8,
"\xB6\x17\x31\x86\x55\x05\x72\x64\xE2\x8B\xC0\xB6\xFB\x37\x8C\x8E"
"\xF1\x46\xBE\x00" },
{ "Jefe", 4,
"what do ya want for nothing?", 28,
"\xEF\xFC\xDF\x6A\xE5\xEB\x2F\xA2\xD2\x74\x16\xD5\xF1\x84\xDF\x9C"
"\x25\x9A\x7C\x79" },
{ "\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA", 20,
"\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
"\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
"\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
"\xDD\xDD", 50,
"\x12\x5D\x73\x42\xB9\xAC\x11\xCD\x91\xA3\x9A\xF4\x8A\xA1\x7B\x4F"
"\x63\xF1\x75\xD3" },
{ "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F\x10"
"\x11\x12\x13\x14\x15\x16\x17\x18\x19", 25,
"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
"\xCD\xCD", 50,
"\x4C\x90\x07\xF4\x02\x62\x50\xC6\xBC\x84\x14\xF9\xBF\x50\xC8\x6C"
"\x2D\x72\x35\xDA" },
{ "\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C"
"\x0C\x0C\x0C\x0C", 20,
"Test With Truncation", 20,
"\x4C\x1A\x03\x42\x4B\x55\xE0\x7F\xE7\xF2\x7B\xE1\xD5\x8B\xB9\x32"
"\x4A\x9A\x5A\x04" },
{ "\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA",
80,
"Test Using Larger Than Block-Size Key - Hash Key First", 54,
"\xAA\x4A\xE5\xE1\x52\x72\xD0\x0E\x95\x70\x56\x37\xCE\x8A\x3B\x55"
"\xED\x40\x21\x12" },
{ "\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
"\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA",
80,
"Test Using Larger Than Block-Size Key and Larger "
"Than One Block-Size Data", 73,
"\xE8\xE9\x9D\x0F\x45\x23\x7D\x78\x6D\x6B\xBA\xA7\x96\x5C\x78\x08"
"\xBB\xFF\x1A\x91" }
};
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
crypto::HMAC hmac(crypto::HMAC::SHA1);
ASSERT_TRUE(hmac.Init(reinterpret_cast<const unsigned char*>(cases[i].key),
cases[i].key_len));
std::string data_string(cases[i].data, cases[i].data_len);
unsigned char digest[kSHA1DigestSize];
EXPECT_TRUE(hmac.Sign(data_string, digest, kSHA1DigestSize));
EXPECT_EQ(0, memcmp(cases[i].digest, digest, kSHA1DigestSize));
}
}
// TODO(wtc): add other test vectors from RFC 4231.
TEST(HMACTest, RFC4231TestCase6) {
unsigned char key[131];
for (size_t i = 0; i < sizeof(key); ++i)
key[i] = 0xaa;
std::string data = "Test Using Larger Than Block-Size Key - Hash Key First";
ASSERT_EQ(54U, data.size());
static unsigned char kKnownHMACSHA256[] = {
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
};
crypto::HMAC hmac(crypto::HMAC::SHA256);
ASSERT_TRUE(hmac.Init(key, sizeof(key)));
unsigned char calculated_hmac[kSHA256DigestSize];
EXPECT_EQ(kSHA256DigestSize, hmac.DigestLength());
EXPECT_TRUE(hmac.Sign(data, calculated_hmac, kSHA256DigestSize));
EXPECT_EQ(0, memcmp(kKnownHMACSHA256, calculated_hmac, kSHA256DigestSize));
}
// Based on NSS's FIPS HMAC power-up self-test.
TEST(HMACTest, NSSFIPSPowerUpSelfTest) {
static const char kKnownMessage[] =
"The test message for the MD2, MD5, and SHA-1 hashing algorithms.";
static const unsigned char kKnownSecretKey[] = {
0x46, 0x69, 0x72, 0x65, 0x66, 0x6f, 0x78, 0x20,
0x61, 0x6e, 0x64, 0x20, 0x54, 0x68, 0x75, 0x6e,
0x64, 0x65, 0x72, 0x42, 0x69, 0x72, 0x64, 0x20,
0x61, 0x72, 0x65, 0x20, 0x61, 0x77, 0x65, 0x73,
0x6f, 0x6d, 0x65, 0x21, 0x00
};
static const size_t kKnownSecretKeySize = sizeof(kKnownSecretKey);
// HMAC-SHA-1 known answer (20 bytes).
static const unsigned char kKnownHMACSHA1[] = {
0xd5, 0x85, 0xf6, 0x5b, 0x39, 0xfa, 0xb9, 0x05,
0x3b, 0x57, 0x1d, 0x61, 0xe7, 0xb8, 0x84, 0x1e,
0x5d, 0x0e, 0x1e, 0x11
};
// HMAC-SHA-256 known answer (32 bytes).
static const unsigned char kKnownHMACSHA256[] = {
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
};
std::string message_data(kKnownMessage);
crypto::HMAC hmac(crypto::HMAC::SHA1);
ASSERT_TRUE(hmac.Init(kKnownSecretKey, kKnownSecretKeySize));
unsigned char calculated_hmac[kSHA1DigestSize];
EXPECT_EQ(kSHA1DigestSize, hmac.DigestLength());
EXPECT_TRUE(hmac.Sign(message_data, calculated_hmac, kSHA1DigestSize));
EXPECT_EQ(0, memcmp(kKnownHMACSHA1, calculated_hmac, kSHA1DigestSize));
EXPECT_TRUE(hmac.Verify(
message_data,
base::StringPiece(reinterpret_cast<const char*>(kKnownHMACSHA1),
kSHA1DigestSize)));
EXPECT_TRUE(hmac.VerifyTruncated(
message_data,
base::StringPiece(reinterpret_cast<const char*>(kKnownHMACSHA1),
kSHA1DigestSize / 2)));
crypto::HMAC hmac2(crypto::HMAC::SHA256);
ASSERT_TRUE(hmac2.Init(kKnownSecretKey, kKnownSecretKeySize));
unsigned char calculated_hmac2[kSHA256DigestSize];
EXPECT_TRUE(hmac2.Sign(message_data, calculated_hmac2, kSHA256DigestSize));
EXPECT_EQ(0, memcmp(kKnownHMACSHA256, calculated_hmac2, kSHA256DigestSize));
}
TEST(HMACTest, HMACObjectReuse) {
crypto::HMAC hmac(crypto::HMAC::SHA1);
ASSERT_TRUE(
hmac.Init(reinterpret_cast<const unsigned char*>(kSimpleKey),
kSimpleKeyLength));
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kSimpleHmacCases); ++i) {
std::string data_string(kSimpleHmacCases[i].data,
kSimpleHmacCases[i].data_len);
unsigned char digest[kSHA1DigestSize];
EXPECT_TRUE(hmac.Sign(data_string, digest, kSHA1DigestSize));
EXPECT_EQ(0, memcmp(kSimpleHmacCases[i].digest, digest, kSHA1DigestSize));
}
}
TEST(HMACTest, Verify) {
crypto::HMAC hmac(crypto::HMAC::SHA1);
ASSERT_TRUE(
hmac.Init(reinterpret_cast<const unsigned char*>(kSimpleKey),
kSimpleKeyLength));
const char empty_digest[kSHA1DigestSize] = { 0 };
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kSimpleHmacCases); ++i) {
// Expected results
EXPECT_TRUE(hmac.Verify(
base::StringPiece(kSimpleHmacCases[i].data,
kSimpleHmacCases[i].data_len),
base::StringPiece(kSimpleHmacCases[i].digest,
kSHA1DigestSize)));
// Mismatched size
EXPECT_FALSE(hmac.Verify(
base::StringPiece(kSimpleHmacCases[i].data,
kSimpleHmacCases[i].data_len),
base::StringPiece(kSimpleHmacCases[i].data,
kSimpleHmacCases[i].data_len)));
// Expected size, mismatched data
EXPECT_FALSE(hmac.Verify(
base::StringPiece(kSimpleHmacCases[i].data,
kSimpleHmacCases[i].data_len),
base::StringPiece(empty_digest, kSHA1DigestSize)));
}
}
TEST(HMACTest, EmptyKey) {
// Test vector from https://en.wikipedia.org/wiki/HMAC
const char* kExpectedDigest =
"\xFB\xDB\x1D\x1B\x18\xAA\x6C\x08\x32\x4B\x7D\x64\xB7\x1F\xB7\x63"
"\x70\x69\x0E\x1D";
base::StringPiece data("");
crypto::HMAC hmac(crypto::HMAC::SHA1);
ASSERT_TRUE(hmac.Init(NULL, 0));
unsigned char digest[kSHA1DigestSize];
EXPECT_TRUE(hmac.Sign(data, digest, kSHA1DigestSize));
EXPECT_EQ(0, memcmp(kExpectedDigest, digest, kSHA1DigestSize));
EXPECT_TRUE(hmac.Verify(
data, base::StringPiece(kExpectedDigest, kSHA1DigestSize)));
}
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