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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "crypto/encryptor.h" | |
| 6 | |
| 7 #include <string> | |
| 8 | |
| 9 #include "base/memory/scoped_ptr.h" | |
| 10 #include "base/strings/string_number_conversions.h" | |
| 11 #include "crypto/symmetric_key.h" | |
| 12 #include "testing/gtest/include/gtest/gtest.h" | |
| 13 | |
| 14 TEST(EncryptorTest, EncryptDecrypt) { | |
| 15 scoped_ptr<crypto::SymmetricKey> key( | |
| 16 crypto::SymmetricKey::DeriveKeyFromPassword( | |
| 17 crypto::SymmetricKey::AES, "password", "saltiest", 1000, 256)); | |
| 18 EXPECT_TRUE(key.get()); | |
| 19 | |
| 20 crypto::Encryptor encryptor; | |
| 21 // The IV must be exactly as long as the cipher block size. | |
| 22 std::string iv("the iv: 16 bytes"); | |
| 23 EXPECT_EQ(16U, iv.size()); | |
| 24 EXPECT_TRUE(encryptor.Init(key.get(), crypto::Encryptor::CBC, iv)); | |
| 25 | |
| 26 std::string plaintext("this is the plaintext"); | |
| 27 std::string ciphertext; | |
| 28 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext)); | |
| 29 | |
| 30 EXPECT_LT(0U, ciphertext.size()); | |
| 31 | |
| 32 std::string decrypted; | |
| 33 EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decrypted)); | |
| 34 | |
| 35 EXPECT_EQ(plaintext, decrypted); | |
| 36 } | |
| 37 | |
| 38 TEST(EncryptorTest, DecryptWrongKey) { | |
| 39 scoped_ptr<crypto::SymmetricKey> key( | |
| 40 crypto::SymmetricKey::DeriveKeyFromPassword( | |
| 41 crypto::SymmetricKey::AES, "password", "saltiest", 1000, 256)); | |
| 42 EXPECT_TRUE(key.get()); | |
| 43 | |
| 44 // A wrong key that can be detected by implementations that validate every | |
| 45 // byte in the padding. | |
| 46 scoped_ptr<crypto::SymmetricKey> wrong_key( | |
| 47 crypto::SymmetricKey::DeriveKeyFromPassword( | |
| 48 crypto::SymmetricKey::AES, "wrongword", "sweetest", 1000, 256)); | |
| 49 EXPECT_TRUE(wrong_key.get()); | |
| 50 | |
| 51 // A wrong key that can't be detected by any implementation. The password | |
| 52 // "wrongword;" would also work. | |
| 53 scoped_ptr<crypto::SymmetricKey> wrong_key2( | |
| 54 crypto::SymmetricKey::DeriveKeyFromPassword( | |
| 55 crypto::SymmetricKey::AES, "wrongword+", "sweetest", 1000, 256)); | |
| 56 EXPECT_TRUE(wrong_key2.get()); | |
| 57 | |
| 58 // A wrong key that can be detected by all implementations. | |
| 59 scoped_ptr<crypto::SymmetricKey> wrong_key3( | |
| 60 crypto::SymmetricKey::DeriveKeyFromPassword( | |
| 61 crypto::SymmetricKey::AES, "wrongwordx", "sweetest", 1000, 256)); | |
| 62 EXPECT_TRUE(wrong_key3.get()); | |
| 63 | |
| 64 crypto::Encryptor encryptor; | |
| 65 // The IV must be exactly as long as the cipher block size. | |
| 66 std::string iv("the iv: 16 bytes"); | |
| 67 EXPECT_EQ(16U, iv.size()); | |
| 68 EXPECT_TRUE(encryptor.Init(key.get(), crypto::Encryptor::CBC, iv)); | |
| 69 | |
| 70 std::string plaintext("this is the plaintext"); | |
| 71 std::string ciphertext; | |
| 72 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext)); | |
| 73 | |
| 74 static const unsigned char expected_ciphertext[] = { | |
| 75 0x7D, 0x67, 0x5B, 0x53, 0xE6, 0xD8, 0x0F, 0x27, | |
| 76 0x74, 0xB1, 0x90, 0xFE, 0x6E, 0x58, 0x4A, 0xA0, | |
| 77 0x0E, 0x35, 0xE3, 0x01, 0xC0, 0xFE, 0x9A, 0xD8, | |
| 78 0x48, 0x1D, 0x42, 0xB0, 0xBA, 0x21, 0xB2, 0x0C | |
| 79 }; | |
| 80 | |
| 81 ASSERT_EQ(arraysize(expected_ciphertext), ciphertext.size()); | |
| 82 for (size_t i = 0; i < ciphertext.size(); ++i) { | |
| 83 ASSERT_EQ(expected_ciphertext[i], | |
| 84 static_cast<unsigned char>(ciphertext[i])); | |
| 85 } | |
| 86 | |
| 87 std::string decrypted; | |
| 88 | |
| 89 // This wrong key causes the last padding byte to be 5, which is a valid | |
| 90 // padding length, and the second to last padding byte to be 137, which is | |
| 91 // invalid. If an implementation simply uses the last padding byte to | |
| 92 // determine the padding length without checking every padding byte, | |
| 93 // Encryptor::Decrypt() will still return true. This is the case for NSS | |
| 94 // (crbug.com/124434). | |
| 95 #if !defined(USE_NSS) && !defined(OS_WIN) && !defined(OS_MACOSX) | |
| 96 crypto::Encryptor decryptor; | |
| 97 EXPECT_TRUE(decryptor.Init(wrong_key.get(), crypto::Encryptor::CBC, iv)); | |
| 98 EXPECT_FALSE(decryptor.Decrypt(ciphertext, &decrypted)); | |
| 99 #endif | |
| 100 | |
| 101 // This demonstrates that not all wrong keys can be detected by padding | |
| 102 // error. This wrong key causes the last padding byte to be 1, which is | |
| 103 // a valid padding block of length 1. | |
| 104 crypto::Encryptor decryptor2; | |
| 105 EXPECT_TRUE(decryptor2.Init(wrong_key2.get(), crypto::Encryptor::CBC, iv)); | |
| 106 EXPECT_TRUE(decryptor2.Decrypt(ciphertext, &decrypted)); | |
| 107 | |
| 108 // This wrong key causes the last padding byte to be 253, which should be | |
| 109 // rejected by all implementations. | |
| 110 crypto::Encryptor decryptor3; | |
| 111 EXPECT_TRUE(decryptor3.Init(wrong_key3.get(), crypto::Encryptor::CBC, iv)); | |
| 112 EXPECT_FALSE(decryptor3.Decrypt(ciphertext, &decrypted)); | |
| 113 } | |
| 114 | |
| 115 namespace { | |
| 116 | |
| 117 // From NIST SP 800-38a test cast: | |
| 118 // - F.5.1 CTR-AES128.Encrypt | |
| 119 // - F.5.6 CTR-AES256.Encrypt | |
| 120 // http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf | |
| 121 const unsigned char kAES128CTRKey[] = { | |
| 122 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, | |
| 123 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c | |
| 124 }; | |
| 125 | |
| 126 const unsigned char kAES256CTRKey[] = { | |
| 127 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, | |
| 128 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81, | |
| 129 0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, | |
| 130 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 | |
| 131 }; | |
| 132 | |
| 133 const unsigned char kAESCTRInitCounter[] = { | |
| 134 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, | |
| 135 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff | |
| 136 }; | |
| 137 | |
| 138 const unsigned char kAESCTRPlaintext[] = { | |
| 139 // Block #1 | |
| 140 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, | |
| 141 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a, | |
| 142 // Block #2 | |
| 143 0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, | |
| 144 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51, | |
| 145 // Block #3 | |
| 146 0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, | |
| 147 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef, | |
| 148 // Block #4 | |
| 149 0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, | |
| 150 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 | |
| 151 }; | |
| 152 | |
| 153 const unsigned char kAES128CTRCiphertext[] = { | |
| 154 // Block #1 | |
| 155 0x87, 0x4d, 0x61, 0x91, 0xb6, 0x20, 0xe3, 0x26, | |
| 156 0x1b, 0xef, 0x68, 0x64, 0x99, 0x0d, 0xb6, 0xce, | |
| 157 // Block #2 | |
| 158 0x98, 0x06, 0xf6, 0x6b, 0x79, 0x70, 0xfd, 0xff, | |
| 159 0x86, 0x17, 0x18, 0x7b, 0xb9, 0xff, 0xfd, 0xff, | |
| 160 // Block #3 | |
| 161 0x5a, 0xe4, 0xdf, 0x3e, 0xdb, 0xd5, 0xd3, 0x5e, | |
| 162 0x5b, 0x4f, 0x09, 0x02, 0x0d, 0xb0, 0x3e, 0xab, | |
| 163 // Block #4 | |
| 164 0x1e, 0x03, 0x1d, 0xda, 0x2f, 0xbe, 0x03, 0xd1, | |
| 165 0x79, 0x21, 0x70, 0xa0, 0xf3, 0x00, 0x9c, 0xee | |
| 166 }; | |
| 167 | |
| 168 const unsigned char kAES256CTRCiphertext[] = { | |
| 169 // Block #1 | |
| 170 0x60, 0x1e, 0xc3, 0x13, 0x77, 0x57, 0x89, 0xa5, | |
| 171 0xb7, 0xa7, 0xf5, 0x04, 0xbb, 0xf3, 0xd2, 0x28, | |
| 172 // Block #2 | |
| 173 0xf4, 0x43, 0xe3, 0xca, 0x4d, 0x62, 0xb5, 0x9a, | |
| 174 0xca, 0x84, 0xe9, 0x90, 0xca, 0xca, 0xf5, 0xc5, | |
| 175 // Block #3 | |
| 176 0x2b, 0x09, 0x30, 0xda, 0xa2, 0x3d, 0xe9, 0x4c, | |
| 177 0xe8, 0x70, 0x17, 0xba, 0x2d, 0x84, 0x98, 0x8d, | |
| 178 // Block #4 | |
| 179 0xdf, 0xc9, 0xc5, 0x8d, 0xb6, 0x7a, 0xad, 0xa6, | |
| 180 0x13, 0xc2, 0xdd, 0x08, 0x45, 0x79, 0x41, 0xa6 | |
| 181 }; | |
| 182 | |
| 183 void TestAESCTREncrypt( | |
| 184 const unsigned char* key, size_t key_size, | |
| 185 const unsigned char* init_counter, size_t init_counter_size, | |
| 186 const unsigned char* plaintext, size_t plaintext_size, | |
| 187 const unsigned char* ciphertext, size_t ciphertext_size) { | |
| 188 std::string key_str(reinterpret_cast<const char*>(key), key_size); | |
| 189 scoped_ptr<crypto::SymmetricKey> sym_key(crypto::SymmetricKey::Import( | |
| 190 crypto::SymmetricKey::AES, key_str)); | |
| 191 ASSERT_TRUE(sym_key.get()); | |
| 192 | |
| 193 crypto::Encryptor encryptor; | |
| 194 EXPECT_TRUE(encryptor.Init(sym_key.get(), crypto::Encryptor::CTR, "")); | |
| 195 | |
| 196 base::StringPiece init_counter_str( | |
| 197 reinterpret_cast<const char*>(init_counter), init_counter_size); | |
| 198 base::StringPiece plaintext_str( | |
| 199 reinterpret_cast<const char*>(plaintext), plaintext_size); | |
| 200 | |
| 201 EXPECT_TRUE(encryptor.SetCounter(init_counter_str)); | |
| 202 std::string encrypted; | |
| 203 EXPECT_TRUE(encryptor.Encrypt(plaintext_str, &encrypted)); | |
| 204 | |
| 205 EXPECT_EQ(ciphertext_size, encrypted.size()); | |
| 206 EXPECT_EQ(0, memcmp(encrypted.data(), ciphertext, encrypted.size())); | |
| 207 | |
| 208 std::string decrypted; | |
| 209 EXPECT_TRUE(encryptor.SetCounter(init_counter_str)); | |
| 210 EXPECT_TRUE(encryptor.Decrypt(encrypted, &decrypted)); | |
| 211 | |
| 212 EXPECT_EQ(plaintext_str, decrypted); | |
| 213 } | |
| 214 | |
| 215 void TestAESCTRMultipleDecrypt( | |
| 216 const unsigned char* key, size_t key_size, | |
| 217 const unsigned char* init_counter, size_t init_counter_size, | |
| 218 const unsigned char* plaintext, size_t plaintext_size, | |
| 219 const unsigned char* ciphertext, size_t ciphertext_size) { | |
| 220 std::string key_str(reinterpret_cast<const char*>(key), key_size); | |
| 221 scoped_ptr<crypto::SymmetricKey> sym_key(crypto::SymmetricKey::Import( | |
| 222 crypto::SymmetricKey::AES, key_str)); | |
| 223 ASSERT_TRUE(sym_key.get()); | |
| 224 | |
| 225 crypto::Encryptor encryptor; | |
| 226 EXPECT_TRUE(encryptor.Init(sym_key.get(), crypto::Encryptor::CTR, "")); | |
| 227 | |
| 228 // Counter is set only once. | |
| 229 EXPECT_TRUE(encryptor.SetCounter(base::StringPiece( | |
| 230 reinterpret_cast<const char*>(init_counter), init_counter_size))); | |
| 231 | |
| 232 std::string ciphertext_str(reinterpret_cast<const char*>(ciphertext), | |
| 233 ciphertext_size); | |
| 234 | |
| 235 int kTestDecryptSizes[] = { 32, 16, 8 }; | |
| 236 | |
| 237 int offset = 0; | |
| 238 for (size_t i = 0; i < arraysize(kTestDecryptSizes); ++i) { | |
| 239 std::string decrypted; | |
| 240 size_t len = kTestDecryptSizes[i]; | |
| 241 EXPECT_TRUE( | |
| 242 encryptor.Decrypt(ciphertext_str.substr(offset, len), &decrypted)); | |
| 243 EXPECT_EQ(len, decrypted.size()); | |
| 244 EXPECT_EQ(0, memcmp(decrypted.data(), plaintext + offset, len)); | |
| 245 offset += len; | |
| 246 } | |
| 247 } | |
| 248 | |
| 249 } // namespace | |
| 250 | |
| 251 TEST(EncryptorTest, EncryptAES128CTR) { | |
| 252 TestAESCTREncrypt( | |
| 253 kAES128CTRKey, arraysize(kAES128CTRKey), | |
| 254 kAESCTRInitCounter, arraysize(kAESCTRInitCounter), | |
| 255 kAESCTRPlaintext, arraysize(kAESCTRPlaintext), | |
| 256 kAES128CTRCiphertext, arraysize(kAES128CTRCiphertext)); | |
| 257 } | |
| 258 | |
| 259 TEST(EncryptorTest, EncryptAES256CTR) { | |
| 260 TestAESCTREncrypt( | |
| 261 kAES256CTRKey, arraysize(kAES256CTRKey), | |
| 262 kAESCTRInitCounter, arraysize(kAESCTRInitCounter), | |
| 263 kAESCTRPlaintext, arraysize(kAESCTRPlaintext), | |
| 264 kAES256CTRCiphertext, arraysize(kAES256CTRCiphertext)); | |
| 265 } | |
| 266 | |
| 267 TEST(EncryptorTest, EncryptAES128CTR_MultipleDecrypt) { | |
| 268 TestAESCTRMultipleDecrypt( | |
| 269 kAES128CTRKey, arraysize(kAES128CTRKey), | |
| 270 kAESCTRInitCounter, arraysize(kAESCTRInitCounter), | |
| 271 kAESCTRPlaintext, arraysize(kAESCTRPlaintext), | |
| 272 kAES128CTRCiphertext, arraysize(kAES128CTRCiphertext)); | |
| 273 } | |
| 274 | |
| 275 TEST(EncryptorTest, EncryptAES256CTR_MultipleDecrypt) { | |
| 276 TestAESCTRMultipleDecrypt( | |
| 277 kAES256CTRKey, arraysize(kAES256CTRKey), | |
| 278 kAESCTRInitCounter, arraysize(kAESCTRInitCounter), | |
| 279 kAESCTRPlaintext, arraysize(kAESCTRPlaintext), | |
| 280 kAES256CTRCiphertext, arraysize(kAES256CTRCiphertext)); | |
| 281 } | |
| 282 | |
| 283 TEST(EncryptorTest, EncryptDecryptCTR) { | |
| 284 scoped_ptr<crypto::SymmetricKey> key( | |
| 285 crypto::SymmetricKey::GenerateRandomKey(crypto::SymmetricKey::AES, 128)); | |
| 286 | |
| 287 EXPECT_TRUE(key.get()); | |
| 288 const std::string kInitialCounter = "0000000000000000"; | |
| 289 | |
| 290 crypto::Encryptor encryptor; | |
| 291 EXPECT_TRUE(encryptor.Init(key.get(), crypto::Encryptor::CTR, "")); | |
| 292 EXPECT_TRUE(encryptor.SetCounter(kInitialCounter)); | |
| 293 | |
| 294 std::string plaintext("normal plaintext of random length"); | |
| 295 std::string ciphertext; | |
| 296 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext)); | |
| 297 EXPECT_LT(0U, ciphertext.size()); | |
| 298 | |
| 299 std::string decrypted; | |
| 300 EXPECT_TRUE(encryptor.SetCounter(kInitialCounter)); | |
| 301 EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decrypted)); | |
| 302 EXPECT_EQ(plaintext, decrypted); | |
| 303 | |
| 304 plaintext = "0123456789012345"; | |
| 305 EXPECT_TRUE(encryptor.SetCounter(kInitialCounter)); | |
| 306 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext)); | |
| 307 EXPECT_LT(0U, ciphertext.size()); | |
| 308 | |
| 309 EXPECT_TRUE(encryptor.SetCounter(kInitialCounter)); | |
| 310 EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decrypted)); | |
| 311 EXPECT_EQ(plaintext, decrypted); | |
| 312 } | |
| 313 | |
| 314 TEST(EncryptorTest, CTRCounter) { | |
| 315 const int kCounterSize = 16; | |
| 316 const unsigned char kTest1[] = | |
| 317 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; | |
| 318 unsigned char buf[16]; | |
| 319 | |
| 320 // Increment 10 times. | |
| 321 crypto::Encryptor::Counter counter1( | |
| 322 std::string(reinterpret_cast<const char*>(kTest1), kCounterSize)); | |
| 323 for (int i = 0; i < 10; ++i) | |
| 324 counter1.Increment(); | |
| 325 counter1.Write(buf); | |
| 326 EXPECT_EQ(0, memcmp(buf, kTest1, 15)); | |
| 327 EXPECT_TRUE(buf[15] == 10); | |
| 328 | |
| 329 // Check corner cases. | |
| 330 const unsigned char kTest2[] = { | |
| 331 0, 0, 0, 0, 0, 0, 0, 0, | |
| 332 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff | |
| 333 }; | |
| 334 const unsigned char kExpect2[] = | |
| 335 {0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}; | |
| 336 crypto::Encryptor::Counter counter2( | |
| 337 std::string(reinterpret_cast<const char*>(kTest2), kCounterSize)); | |
| 338 counter2.Increment(); | |
| 339 counter2.Write(buf); | |
| 340 EXPECT_EQ(0, memcmp(buf, kExpect2, kCounterSize)); | |
| 341 | |
| 342 const unsigned char kTest3[] = { | |
| 343 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
| 344 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff | |
| 345 }; | |
| 346 const unsigned char kExpect3[] = | |
| 347 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; | |
| 348 crypto::Encryptor::Counter counter3( | |
| 349 std::string(reinterpret_cast<const char*>(kTest3), kCounterSize)); | |
| 350 counter3.Increment(); | |
| 351 counter3.Write(buf); | |
| 352 EXPECT_EQ(0, memcmp(buf, kExpect3, kCounterSize)); | |
| 353 } | |
| 354 | |
| 355 // TODO(wtc): add more known-answer tests. Test vectors are available from | |
| 356 // http://www.ietf.org/rfc/rfc3602 | |
| 357 // http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf | |
| 358 // http://gladman.plushost.co.uk/oldsite/AES/index.php | |
| 359 // http://csrc.nist.gov/groups/STM/cavp/documents/aes/KAT_AES.zip | |
| 360 | |
| 361 // NIST SP 800-38A test vector F.2.5 CBC-AES256.Encrypt. | |
| 362 TEST(EncryptorTest, EncryptAES256CBC) { | |
| 363 // From NIST SP 800-38a test cast F.2.5 CBC-AES256.Encrypt. | |
| 364 static const unsigned char kRawKey[] = { | |
| 365 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, | |
| 366 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81, | |
| 367 0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, | |
| 368 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 | |
| 369 }; | |
| 370 static const unsigned char kRawIv[] = { | |
| 371 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, | |
| 372 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f | |
| 373 }; | |
| 374 static const unsigned char kRawPlaintext[] = { | |
| 375 // Block #1 | |
| 376 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, | |
| 377 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a, | |
| 378 // Block #2 | |
| 379 0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, | |
| 380 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51, | |
| 381 // Block #3 | |
| 382 0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, | |
| 383 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef, | |
| 384 // Block #4 | |
| 385 0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, | |
| 386 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10, | |
| 387 }; | |
| 388 static const unsigned char kRawCiphertext[] = { | |
| 389 // Block #1 | |
| 390 0xf5, 0x8c, 0x4c, 0x04, 0xd6, 0xe5, 0xf1, 0xba, | |
| 391 0x77, 0x9e, 0xab, 0xfb, 0x5f, 0x7b, 0xfb, 0xd6, | |
| 392 // Block #2 | |
| 393 0x9c, 0xfc, 0x4e, 0x96, 0x7e, 0xdb, 0x80, 0x8d, | |
| 394 0x67, 0x9f, 0x77, 0x7b, 0xc6, 0x70, 0x2c, 0x7d, | |
| 395 // Block #3 | |
| 396 0x39, 0xf2, 0x33, 0x69, 0xa9, 0xd9, 0xba, 0xcf, | |
| 397 0xa5, 0x30, 0xe2, 0x63, 0x04, 0x23, 0x14, 0x61, | |
| 398 // Block #4 | |
| 399 0xb2, 0xeb, 0x05, 0xe2, 0xc3, 0x9b, 0xe9, 0xfc, | |
| 400 0xda, 0x6c, 0x19, 0x07, 0x8c, 0x6a, 0x9d, 0x1b, | |
| 401 // PKCS #5 padding, encrypted. | |
| 402 0x3f, 0x46, 0x17, 0x96, 0xd6, 0xb0, 0xd6, 0xb2, | |
| 403 0xe0, 0xc2, 0xa7, 0x2b, 0x4d, 0x80, 0xe6, 0x44 | |
| 404 }; | |
| 405 | |
| 406 std::string key(reinterpret_cast<const char*>(kRawKey), sizeof(kRawKey)); | |
| 407 scoped_ptr<crypto::SymmetricKey> sym_key(crypto::SymmetricKey::Import( | |
| 408 crypto::SymmetricKey::AES, key)); | |
| 409 ASSERT_TRUE(sym_key.get()); | |
| 410 | |
| 411 crypto::Encryptor encryptor; | |
| 412 // The IV must be exactly as long a the cipher block size. | |
| 413 std::string iv(reinterpret_cast<const char*>(kRawIv), sizeof(kRawIv)); | |
| 414 EXPECT_EQ(16U, iv.size()); | |
| 415 EXPECT_TRUE(encryptor.Init(sym_key.get(), crypto::Encryptor::CBC, iv)); | |
| 416 | |
| 417 std::string plaintext(reinterpret_cast<const char*>(kRawPlaintext), | |
| 418 sizeof(kRawPlaintext)); | |
| 419 std::string ciphertext; | |
| 420 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext)); | |
| 421 | |
| 422 EXPECT_EQ(sizeof(kRawCiphertext), ciphertext.size()); | |
| 423 EXPECT_EQ(0, memcmp(ciphertext.data(), kRawCiphertext, ciphertext.size())); | |
| 424 | |
| 425 std::string decrypted; | |
| 426 EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decrypted)); | |
| 427 | |
| 428 EXPECT_EQ(plaintext, decrypted); | |
| 429 } | |
| 430 | |
| 431 // Expected output derived from the NSS implementation. | |
| 432 TEST(EncryptorTest, EncryptAES128CBCRegression) { | |
| 433 std::string key = "128=SixteenBytes"; | |
| 434 std::string iv = "Sweet Sixteen IV"; | |
| 435 std::string plaintext = "Plain text with a g-clef U+1D11E \360\235\204\236"; | |
| 436 std::string expected_ciphertext_hex = | |
| 437 "D4A67A0BA33C30F207344D81D1E944BBE65587C3D7D9939A" | |
| 438 "C070C62B9C15A3EA312EA4AD1BC7929F4D3C16B03AD5ADA8"; | |
| 439 | |
| 440 scoped_ptr<crypto::SymmetricKey> sym_key(crypto::SymmetricKey::Import( | |
| 441 crypto::SymmetricKey::AES, key)); | |
| 442 ASSERT_TRUE(sym_key.get()); | |
| 443 | |
| 444 crypto::Encryptor encryptor; | |
| 445 // The IV must be exactly as long a the cipher block size. | |
| 446 EXPECT_EQ(16U, iv.size()); | |
| 447 EXPECT_TRUE(encryptor.Init(sym_key.get(), crypto::Encryptor::CBC, iv)); | |
| 448 | |
| 449 std::string ciphertext; | |
| 450 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext)); | |
| 451 EXPECT_EQ(expected_ciphertext_hex, base::HexEncode(ciphertext.data(), | |
| 452 ciphertext.size())); | |
| 453 | |
| 454 std::string decrypted; | |
| 455 EXPECT_TRUE(encryptor.Decrypt(ciphertext, &decrypted)); | |
| 456 EXPECT_EQ(plaintext, decrypted); | |
| 457 } | |
| 458 | |
| 459 // Symmetric keys with an unsupported size should be rejected. Whether they are | |
| 460 // rejected by SymmetricKey::Import or Encryptor::Init depends on the platform. | |
| 461 TEST(EncryptorTest, UnsupportedKeySize) { | |
| 462 std::string key = "7 = bad"; | |
| 463 std::string iv = "Sweet Sixteen IV"; | |
| 464 scoped_ptr<crypto::SymmetricKey> sym_key(crypto::SymmetricKey::Import( | |
| 465 crypto::SymmetricKey::AES, key)); | |
| 466 if (!sym_key.get()) | |
| 467 return; | |
| 468 | |
| 469 crypto::Encryptor encryptor; | |
| 470 // The IV must be exactly as long as the cipher block size. | |
| 471 EXPECT_EQ(16U, iv.size()); | |
| 472 EXPECT_FALSE(encryptor.Init(sym_key.get(), crypto::Encryptor::CBC, iv)); | |
| 473 } | |
| 474 | |
| 475 TEST(EncryptorTest, UnsupportedIV) { | |
| 476 std::string key = "128=SixteenBytes"; | |
| 477 std::string iv = "OnlyForteen :("; | |
| 478 scoped_ptr<crypto::SymmetricKey> sym_key(crypto::SymmetricKey::Import( | |
| 479 crypto::SymmetricKey::AES, key)); | |
| 480 ASSERT_TRUE(sym_key.get()); | |
| 481 | |
| 482 crypto::Encryptor encryptor; | |
| 483 EXPECT_FALSE(encryptor.Init(sym_key.get(), crypto::Encryptor::CBC, iv)); | |
| 484 } | |
| 485 | |
| 486 TEST(EncryptorTest, EmptyEncrypt) { | |
| 487 std::string key = "128=SixteenBytes"; | |
| 488 std::string iv = "Sweet Sixteen IV"; | |
| 489 std::string plaintext; | |
| 490 std::string expected_ciphertext_hex = "8518B8878D34E7185E300D0FCC426396"; | |
| 491 | |
| 492 scoped_ptr<crypto::SymmetricKey> sym_key(crypto::SymmetricKey::Import( | |
| 493 crypto::SymmetricKey::AES, key)); | |
| 494 ASSERT_TRUE(sym_key.get()); | |
| 495 | |
| 496 crypto::Encryptor encryptor; | |
| 497 // The IV must be exactly as long a the cipher block size. | |
| 498 EXPECT_EQ(16U, iv.size()); | |
| 499 EXPECT_TRUE(encryptor.Init(sym_key.get(), crypto::Encryptor::CBC, iv)); | |
| 500 | |
| 501 std::string ciphertext; | |
| 502 EXPECT_TRUE(encryptor.Encrypt(plaintext, &ciphertext)); | |
| 503 EXPECT_EQ(expected_ciphertext_hex, base::HexEncode(ciphertext.data(), | |
| 504 ciphertext.size())); | |
| 505 } | |
| 506 | |
| 507 TEST(EncryptorTest, CipherTextNotMultipleOfBlockSize) { | |
| 508 std::string key = "128=SixteenBytes"; | |
| 509 std::string iv = "Sweet Sixteen IV"; | |
| 510 | |
| 511 scoped_ptr<crypto::SymmetricKey> sym_key(crypto::SymmetricKey::Import( | |
| 512 crypto::SymmetricKey::AES, key)); | |
| 513 ASSERT_TRUE(sym_key.get()); | |
| 514 | |
| 515 crypto::Encryptor encryptor; | |
| 516 // The IV must be exactly as long a the cipher block size. | |
| 517 EXPECT_EQ(16U, iv.size()); | |
| 518 EXPECT_TRUE(encryptor.Init(sym_key.get(), crypto::Encryptor::CBC, iv)); | |
| 519 | |
| 520 // Use a separately allocated array to improve the odds of the memory tools | |
| 521 // catching invalid accesses. | |
| 522 // | |
| 523 // Otherwise when using std::string as the other tests do, accesses several | |
| 524 // bytes off the end of the buffer may fall inside the reservation of | |
| 525 // the string and not be detected. | |
| 526 scoped_ptr<char[]> ciphertext(new char[1]); | |
| 527 | |
| 528 std::string plaintext; | |
| 529 EXPECT_FALSE( | |
| 530 encryptor.Decrypt(base::StringPiece(ciphertext.get(), 1), &plaintext)); | |
| 531 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 956613002:
Reland "Cut down /crypto and switch what is left of it to boringssl". (Closed)
Base URL: git@github.com:domokit/mojo.git@master