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// Copyright (c) 2010 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 "base/crypto/encryptor.h"
#include <string>
#include "base/crypto/symmetric_key.h"
#include "base/scoped_ptr.h"
#include "testing/gtest/include/gtest/gtest.h"
TEST(EncryptorTest, EncryptDecrypt) {
scoped_ptr<base::SymmetricKey> key(base::SymmetricKey::DeriveKeyFromPassword(
base::SymmetricKey::AES, "password", "saltiest", 1000, 256));
EXPECT_TRUE(NULL != key.get());
base::Encryptor encryptor;
// The IV must be exactly as long as the cipher block size.
std::string iv("the iv: 16 bytes");
EXPECT_EQ(16U, iv.size());
EXPECT_TRUE(encryptor.Init(key.get(), base::Encryptor::CBC, iv));
std::string plaintext("this is the plaintext");
std::string ciphertext;
EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext));
EXPECT_LT(0U, ciphertext.size());
std::string decypted;
EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decypted));
EXPECT_EQ(plaintext, decypted);
}
// TODO(wtc): add more known-answer tests. Test vectors are available from
// http://www.ietf.org/rfc/rfc3602
// http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
// http://gladman.plushost.co.uk/oldsite/AES/index.php
// http://csrc.nist.gov/groups/STM/cavp/documents/aes/KAT_AES.zip
// TODO(wtc): implement base::SymmetricKey::Import and enable this test for
// other platforms.
#if defined(OS_WIN)
// NIST SP 800-38A test vector F.2.5 CBC-AES256.Encrypt.
TEST(EncryptorTest, EncryptAES256CBC) {
// From NIST SP 800-38a test cast F.2.5 CBC-AES256.Encrypt.
static const unsigned char raw_key[] = {
0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe,
0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,
0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7,
0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4
};
static const unsigned char raw_iv[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
};
static const unsigned char raw_plaintext[] = {
// Block #1
0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
// Block #2
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c,
0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
// Block #3
0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11,
0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
// Block #4
0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17,
0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10,
};
static const unsigned char raw_ciphertext[] = {
// Block #1
0xf5, 0x8c, 0x4c, 0x04, 0xd6, 0xe5, 0xf1, 0xba,
0x77, 0x9e, 0xab, 0xfb, 0x5f, 0x7b, 0xfb, 0xd6,
// Block #2
0x9c, 0xfc, 0x4e, 0x96, 0x7e, 0xdb, 0x80, 0x8d,
0x67, 0x9f, 0x77, 0x7b, 0xc6, 0x70, 0x2c, 0x7d,
// Block #3
0x39, 0xf2, 0x33, 0x69, 0xa9, 0xd9, 0xba, 0xcf,
0xa5, 0x30, 0xe2, 0x63, 0x04, 0x23, 0x14, 0x61,
// Block #4
0xb2, 0xeb, 0x05, 0xe2, 0xc3, 0x9b, 0xe9, 0xfc,
0xda, 0x6c, 0x19, 0x07, 0x8c, 0x6a, 0x9d, 0x1b,
// PKCS #5 padding, encrypted.
0x3f, 0x46, 0x17, 0x96, 0xd6, 0xb0, 0xd6, 0xb2,
0xe0, 0xc2, 0xa7, 0x2b, 0x4d, 0x80, 0xe6, 0x44
};
scoped_ptr<base::SymmetricKey> key(base::SymmetricKey::Import(
base::SymmetricKey::AES, raw_key, sizeof(raw_key)));
EXPECT_TRUE(NULL != key.get());
base::Encryptor encryptor;
// The IV must be exactly as long a the cipher block size.
std::string iv(reinterpret_cast<const char*>(raw_iv), sizeof(raw_iv));
EXPECT_EQ(16U, iv.size());
EXPECT_TRUE(encryptor.Init(key.get(), base::Encryptor::CBC, iv));
std::string plaintext(reinterpret_cast<const char*>(raw_plaintext),
sizeof(raw_plaintext));
std::string ciphertext;
EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext));
EXPECT_EQ(sizeof(raw_ciphertext), ciphertext.size());
EXPECT_EQ(0, memcmp(ciphertext.data(), raw_ciphertext, ciphertext.size()));
std::string decypted;
EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decypted));
EXPECT_EQ(plaintext, decypted);
}
#endif // OS_WIN
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