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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 "crypto/symmetric_key.h"
#include <memory>
#include <string>
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "testing/gtest/include/gtest/gtest.h"
TEST(SymmetricKeyTest, GenerateRandomKey) {
std::unique_ptr<crypto::SymmetricKey> key(
crypto::SymmetricKey::GenerateRandomKey(crypto::SymmetricKey::AES, 256));
ASSERT_TRUE(key);
EXPECT_EQ(32U, key->key().size());
// Do it again and check that the keys are different.
// (Note: this has a one-in-10^77 chance of failure!)
std::unique_ptr<crypto::SymmetricKey> key2(
crypto::SymmetricKey::GenerateRandomKey(crypto::SymmetricKey::AES, 256));
ASSERT_TRUE(key2);
EXPECT_EQ(32U, key2->key().size());
EXPECT_NE(key->key(), key2->key());
}
TEST(SymmetricKeyTest, ImportGeneratedKey) {
std::unique_ptr<crypto::SymmetricKey> key1(
crypto::SymmetricKey::GenerateRandomKey(crypto::SymmetricKey::AES, 256));
ASSERT_TRUE(key1);
std::unique_ptr<crypto::SymmetricKey> key2(
crypto::SymmetricKey::Import(crypto::SymmetricKey::AES, key1->key()));
ASSERT_TRUE(key2);
EXPECT_EQ(key1->key(), key2->key());
}
TEST(SymmetricKeyTest, ImportDerivedKey) {
std::unique_ptr<crypto::SymmetricKey> key1(
crypto::SymmetricKey::DeriveKeyFromPasswordUsingPbkdf2(
crypto::SymmetricKey::HMAC_SHA1, "password", "somesalt", 1024, 160));
ASSERT_TRUE(key1);
std::unique_ptr<crypto::SymmetricKey> key2(crypto::SymmetricKey::Import(
crypto::SymmetricKey::HMAC_SHA1, key1->key()));
ASSERT_TRUE(key2);
EXPECT_EQ(key1->key(), key2->key());
}
struct PBKDF2TestVector {
crypto::SymmetricKey::Algorithm algorithm;
const char* password;
const char* salt;
unsigned int rounds;
unsigned int key_size_in_bits;
const char* expected; // ASCII encoded hex bytes.
};
struct ScryptTestVector {
crypto::SymmetricKey::Algorithm algorithm;
const char* password;
const char* salt;
unsigned int cost_parameter;
unsigned int block_size;
unsigned int parallelization_parameter;
unsigned int key_size_in_bits;
const char* expected; // ASCII encoded hex bytes.
};
class SymmetricKeyDeriveKeyFromPasswordUsingPbkdf2Test
: public testing::TestWithParam<PBKDF2TestVector> {};
class SymmetricKeyDeriveKeyFromPasswordUsingScryptTest
: public testing::TestWithParam<ScryptTestVector> {};
TEST_P(SymmetricKeyDeriveKeyFromPasswordUsingPbkdf2Test,
DeriveKeyFromPasswordUsingPbkdf2) {
PBKDF2TestVector test_data(GetParam());
std::unique_ptr<crypto::SymmetricKey> key(
crypto::SymmetricKey::DeriveKeyFromPasswordUsingPbkdf2(
test_data.algorithm, test_data.password, test_data.salt,
test_data.rounds, test_data.key_size_in_bits));
ASSERT_TRUE(key);
const std::string& raw_key = key->key();
EXPECT_EQ(test_data.key_size_in_bits / 8, raw_key.size());
EXPECT_EQ(test_data.expected,
base::ToLowerASCII(base::HexEncode(raw_key.data(),
raw_key.size())));
}
TEST_P(SymmetricKeyDeriveKeyFromPasswordUsingScryptTest,
DeriveKeyFromPasswordUsingScrypt) {
const int kScryptMaxMemoryBytes = 128 * 1024 * 1024; // 128 MiB.
ScryptTestVector test_data(GetParam());
std::unique_ptr<crypto::SymmetricKey> key(
crypto::SymmetricKey::DeriveKeyFromPasswordUsingScrypt(
test_data.algorithm, test_data.password, test_data.salt,
test_data.cost_parameter, test_data.block_size,
test_data.parallelization_parameter, kScryptMaxMemoryBytes,
test_data.key_size_in_bits));
ASSERT_TRUE(key);
const std::string& raw_key = key->key();
EXPECT_EQ(test_data.key_size_in_bits / 8, raw_key.size());
EXPECT_EQ(test_data.expected, base::ToLowerASCII(base::HexEncode(
raw_key.data(), raw_key.size())));
}
static const PBKDF2TestVector kTestVectorsPbkdf2[] = {
// These tests come from
// http://www.ietf.org/id/draft-josefsson-pbkdf2-test-vectors-00.txt.
{
crypto::SymmetricKey::HMAC_SHA1, "password", "salt", 1, 160,
"0c60c80f961f0e71f3a9b524af6012062fe037a6",
},
{
crypto::SymmetricKey::HMAC_SHA1, "password", "salt", 2, 160,
"ea6c014dc72d6f8ccd1ed92ace1d41f0d8de8957",
},
{
crypto::SymmetricKey::HMAC_SHA1, "password", "salt", 4096, 160,
"4b007901b765489abead49d926f721d065a429c1",
},
// This test takes over 30s to run on the trybots.
#if 0
{
crypto::SymmetricKey::HMAC_SHA1,
"password",
"salt",
16777216,
160,
"eefe3d61cd4da4e4e9945b3d6ba2158c2634e984",
},
#endif
// These tests come from RFC 3962, via BSD source code at
// http://www.openbsd.org/cgi-bin/cvsweb/src/sbin/bioctl/pbkdf2.c?rev=HEAD&content-type=text/plain.
{
crypto::SymmetricKey::HMAC_SHA1, "password", "ATHENA.MIT.EDUraeburn", 1,
160, "cdedb5281bb2f801565a1122b25635150ad1f7a0",
},
{
crypto::SymmetricKey::HMAC_SHA1, "password", "ATHENA.MIT.EDUraeburn", 2,
160, "01dbee7f4a9e243e988b62c73cda935da05378b9",
},
{
crypto::SymmetricKey::HMAC_SHA1, "password", "ATHENA.MIT.EDUraeburn",
1200, 160, "5c08eb61fdf71e4e4ec3cf6ba1f5512ba7e52ddb",
},
{
crypto::SymmetricKey::HMAC_SHA1, "password",
"\022"
"4VxxV4\022", /* 0x1234567878563412 */
5, 160, "d1daa78615f287e6a1c8b120d7062a493f98d203",
},
{
crypto::SymmetricKey::HMAC_SHA1,
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
"pass phrase equals block size", 1200, 160,
"139c30c0966bc32ba55fdbf212530ac9c5ec59f1",
},
{
crypto::SymmetricKey::HMAC_SHA1,
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
"pass phrase exceeds block size", 1200, 160,
"9ccad6d468770cd51b10e6a68721be611a8b4d28",
},
{
crypto::SymmetricKey::HMAC_SHA1,
"\360\235\204\236", /* g-clef (0xf09d849e) */
"EXAMPLE.COMpianist", 50, 160,
"6b9cf26d45455a43a5b8bb276a403b39e7fe37a0",
},
// Regression tests for AES keys, derived from the Linux NSS implementation.
{
crypto::SymmetricKey::AES, "A test password", "saltsalt", 1, 256,
"44899a7777f0e6e8b752f875f02044b8ac593de146de896f2e8a816e315a36de",
},
{
crypto::SymmetricKey::AES,
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
"pass phrase exceeds block size", 20, 256,
"e0739745dc28b8721ba402e05214d2ac1eab54cf72bee1fba388297a09eb493c",
},
};
static const ScryptTestVector kTestVectorsScrypt[] = {
// From RFC 7914, "The scrypt Password-Based Key Derivation Function",
// https://tools.ietf.org/html/rfc7914.html. The fourth test vector is
// intentionally not used, as it would make the test significantly slower,
// due to the very high cost parameter.
{crypto::SymmetricKey::HMAC_SHA1, "", "", 16, 1, 1, 512,
"77d6576238657b203b19ca42c18a0497f16b4844e3074ae8dfdffa3fede21442fcd0069de"
"d0948f8326a753a0fc81f17e8d3e0fb2e0d3628cf35e20c38d18906"},
{crypto::SymmetricKey::HMAC_SHA1, "password", "NaCl", 1024, 8, 16, 512,
"fdbabe1c9d3472007856e7190d01e9fe7c6ad7cbc8237830e77376634b3731622eaf30d92"
"e22a3886ff109279d9830dac727afb94a83ee6d8360cbdfa2cc0640"},
{crypto::SymmetricKey::HMAC_SHA1, "pleaseletmein", "SodiumChloride", 16384,
8, 1, 512,
"7023bdcb3afd7348461c06cd81fd38ebfda8fbba904f8e3ea9b543f6545da1f2d54329556"
"13f0fcf62d49705242a9af9e61e85dc0d651e40dfcf017b45575887"}};
INSTANTIATE_TEST_CASE_P(,
SymmetricKeyDeriveKeyFromPasswordUsingPbkdf2Test,
testing::ValuesIn(kTestVectorsPbkdf2));
INSTANTIATE_TEST_CASE_P(,
SymmetricKeyDeriveKeyFromPasswordUsingScryptTest,
testing::ValuesIn(kTestVectorsScrypt));