1 /* 2 * Copyright 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "android_keymaster_test_utils.h" 18 19 #include <algorithm> 20 21 #include <openssl/rand.h> 22 23 #include <keymaster/android_keymaster_messages.h> 24 #include <keymaster/android_keymaster_utils.h> 25 26 using std::copy_if; 27 using std::find_if; 28 using std::is_permutation; 29 using std::ostream; 30 using std::string; 31 using std::vector; 32 33 #ifndef KEYMASTER_NAME_TAGS 34 #error Keymaster test code requires that KEYMASTER_NAME_TAGS is defined 35 #endif 36 37 std::ostream& operator<<(std::ostream& os, const keymaster_key_param_t& param) { 38 os << "Tag: " << keymaster::StringifyTag(param.tag); 39 switch (keymaster_tag_get_type(param.tag)) { 40 case KM_INVALID: 41 os << " Invalid"; 42 break; 43 case KM_UINT_REP: 44 os << " (Rep)"; 45 /* Falls through */ 46 case KM_UINT: 47 os << " Int: " << param.integer; 48 break; 49 case KM_ENUM_REP: 50 os << " (Rep)"; 51 /* Falls through */ 52 case KM_ENUM: 53 os << " Enum: " << param.enumerated; 54 break; 55 case KM_ULONG_REP: 56 os << " (Rep)"; 57 /* Falls through */ 58 case KM_ULONG: 59 os << " Long: " << param.long_integer; 60 break; 61 case KM_DATE: 62 os << " Date: " << param.date_time; 63 break; 64 case KM_BOOL: 65 os << " Bool: " << param.boolean; 66 break; 67 case KM_BIGNUM: 68 os << " Bignum: "; 69 if (!param.blob.data) 70 os << "(null)"; 71 else 72 for (size_t i = 0; i < param.blob.data_length; ++i) 73 os << std::hex << std::setw(2) << static_cast<int>(param.blob.data[i]) << std::dec; 74 break; 75 case KM_BYTES: 76 os << " Bytes: "; 77 if (!param.blob.data) 78 os << "(null)"; 79 else 80 for (size_t i = 0; i < param.blob.data_length; ++i) 81 os << std::hex << std::setw(2) << static_cast<int>(param.blob.data[i]) << std::dec; 82 break; 83 } 84 return os; 85 } 86 87 bool operator==(const keymaster_key_param_t& a, const keymaster_key_param_t& b) { 88 if (a.tag != b.tag) { 89 return false; 90 } 91 92 switch (keymaster_tag_get_type(a.tag)) { 93 case KM_INVALID: 94 return true; 95 case KM_UINT_REP: 96 case KM_UINT: 97 return a.integer == b.integer; 98 case KM_ENUM_REP: 99 case KM_ENUM: 100 return a.enumerated == b.enumerated; 101 case KM_ULONG: 102 case KM_ULONG_REP: 103 return a.long_integer == b.long_integer; 104 case KM_DATE: 105 return a.date_time == b.date_time; 106 case KM_BOOL: 107 return a.boolean == b.boolean; 108 case KM_BIGNUM: 109 case KM_BYTES: 110 if ((a.blob.data == NULL || b.blob.data == NULL) && a.blob.data != b.blob.data) 111 return false; 112 return a.blob.data_length == b.blob.data_length && 113 (memcmp(a.blob.data, b.blob.data, a.blob.data_length) == 0); 114 } 115 116 return false; 117 } 118 119 static char hex_value[256] = { 120 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 121 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 122 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, // '0'..'9' 123 0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 'A'..'F' 124 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 11, 12, 13, 14, 15, 0, 125 0, 0, 0, 0, 0, 0, 0, 0, // 'a'..'f' 126 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 127 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 129 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 130 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 131 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; 132 133 string hex2str(string a) { 134 string b; 135 size_t num = a.size() / 2; 136 b.resize(num); 137 for (size_t i = 0; i < num; i++) { 138 b[i] = (hex_value[a[i * 2] & 0xFF] << 4) + (hex_value[a[i * 2 + 1] & 0xFF]); 139 } 140 return b; 141 } 142 143 namespace keymaster { 144 145 bool operator==(const AuthorizationSet& a, const AuthorizationSet& b) { 146 if (a.size() != b.size()) 147 return false; 148 149 for (size_t i = 0; i < a.size(); ++i) 150 if (!(a[i] == b[i])) 151 return false; 152 return true; 153 } 154 155 bool operator!=(const AuthorizationSet& a, const AuthorizationSet& b) { 156 return !(a == b); 157 } 158 159 std::ostream& operator<<(std::ostream& os, const AuthorizationSet& set) { 160 if (set.size() == 0) 161 os << "(Empty)" << std::endl; 162 else { 163 os << "\n"; 164 for (size_t i = 0; i < set.size(); ++i) 165 os << set[i] << std::endl; 166 } 167 return os; 168 } 169 170 namespace test { 171 172 Keymaster2Test::Keymaster2Test() : op_handle_(OP_HANDLE_SENTINEL) { 173 memset(&characteristics_, 0, sizeof(characteristics_)); 174 blob_.key_material = nullptr; 175 RAND_seed("foobar", 6); 176 blob_.key_material = 0; 177 device_ = GetParam()->CreateDevice(); 178 } 179 180 Keymaster2Test::~Keymaster2Test() { 181 FreeCharacteristics(); 182 FreeKeyBlob(); 183 device_->common.close(reinterpret_cast<hw_device_t*>(device_)); 184 } 185 186 keymaster2_device_t* Keymaster2Test::device() { 187 return device_; 188 } 189 190 keymaster_error_t Keymaster2Test::GenerateKey(const AuthorizationSetBuilder& builder) { 191 AuthorizationSet params(builder.build()); 192 params.push_back(UserAuthParams()); 193 params.push_back(ClientParams()); 194 195 FreeKeyBlob(); 196 FreeCharacteristics(); 197 return device()->generate_key(device(), ¶ms, &blob_, &characteristics_); 198 } 199 200 keymaster_error_t Keymaster2Test::DeleteKey() { 201 return device()->delete_key(device(), &blob_); 202 } 203 204 keymaster_error_t Keymaster2Test::ImportKey(const AuthorizationSetBuilder& builder, 205 keymaster_key_format_t format, 206 const string& key_material) { 207 AuthorizationSet params(builder.build()); 208 params.push_back(UserAuthParams()); 209 params.push_back(ClientParams()); 210 211 FreeKeyBlob(); 212 FreeCharacteristics(); 213 keymaster_blob_t key = {reinterpret_cast<const uint8_t*>(key_material.c_str()), 214 key_material.length()}; 215 return device()->import_key(device(), ¶ms, format, &key, &blob_, &characteristics_); 216 } 217 218 AuthorizationSet Keymaster2Test::UserAuthParams() { 219 AuthorizationSet set; 220 set.push_back(TAG_USER_ID, 7); 221 set.push_back(TAG_USER_AUTH_TYPE, HW_AUTH_PASSWORD); 222 set.push_back(TAG_AUTH_TIMEOUT, 300); 223 return set; 224 } 225 226 AuthorizationSet Keymaster2Test::ClientParams() { 227 AuthorizationSet set; 228 set.push_back(TAG_APPLICATION_ID, "app_id", 6); 229 return set; 230 } 231 232 keymaster_error_t Keymaster2Test::BeginOperation(keymaster_purpose_t purpose) { 233 AuthorizationSet in_params(client_params()); 234 keymaster_key_param_set_t out_params; 235 keymaster_error_t error = 236 device()->begin(device(), purpose, &blob_, &in_params, &out_params, &op_handle_); 237 EXPECT_EQ(0U, out_params.length); 238 EXPECT_TRUE(out_params.params == nullptr); 239 return error; 240 } 241 242 keymaster_error_t Keymaster2Test::BeginOperation(keymaster_purpose_t purpose, 243 const AuthorizationSet& input_set, 244 AuthorizationSet* output_set) { 245 keymaster_key_param_set_t out_params; 246 keymaster_error_t error = 247 device()->begin(device(), purpose, &blob_, &input_set, &out_params, &op_handle_); 248 if (error == KM_ERROR_OK) { 249 if (output_set) { 250 output_set->Reinitialize(out_params); 251 } else { 252 EXPECT_EQ(0U, out_params.length); 253 EXPECT_TRUE(out_params.params == nullptr); 254 } 255 keymaster_free_param_set(&out_params); 256 } 257 return error; 258 } 259 260 keymaster_error_t Keymaster2Test::UpdateOperation(const string& message, string* output, 261 size_t* input_consumed) { 262 EXPECT_NE(op_handle_, OP_HANDLE_SENTINEL); 263 keymaster_blob_t input = {reinterpret_cast<const uint8_t*>(message.c_str()), message.length()}; 264 keymaster_blob_t out_tmp; 265 keymaster_key_param_set_t out_params; 266 keymaster_error_t error = device()->update(device(), op_handle_, nullptr /* params */, &input, 267 input_consumed, &out_params, &out_tmp); 268 if (error == KM_ERROR_OK && out_tmp.data) 269 output->append(reinterpret_cast<const char*>(out_tmp.data), out_tmp.data_length); 270 free(const_cast<uint8_t*>(out_tmp.data)); 271 return error; 272 } 273 274 keymaster_error_t Keymaster2Test::UpdateOperation(const AuthorizationSet& additional_params, 275 const string& message, 276 AuthorizationSet* output_params, string* output, 277 size_t* input_consumed) { 278 EXPECT_NE(op_handle_, OP_HANDLE_SENTINEL); 279 keymaster_blob_t input = {reinterpret_cast<const uint8_t*>(message.c_str()), message.length()}; 280 keymaster_blob_t out_tmp; 281 keymaster_key_param_set_t out_params; 282 keymaster_error_t error = device()->update(device(), op_handle_, &additional_params, &input, 283 input_consumed, &out_params, &out_tmp); 284 if (error == KM_ERROR_OK && out_tmp.data) 285 output->append(reinterpret_cast<const char*>(out_tmp.data), out_tmp.data_length); 286 free((void*)out_tmp.data); 287 if (output_params) 288 output_params->Reinitialize(out_params); 289 keymaster_free_param_set(&out_params); 290 return error; 291 } 292 293 keymaster_error_t Keymaster2Test::FinishOperation(string* output) { 294 return FinishOperation("", output); 295 } 296 297 keymaster_error_t Keymaster2Test::FinishOperation(const string& signature, string* output) { 298 AuthorizationSet additional_params; 299 AuthorizationSet output_params; 300 return FinishOperation(additional_params, signature, &output_params, output); 301 } 302 303 keymaster_error_t Keymaster2Test::FinishOperation(const AuthorizationSet& additional_params, 304 const string& signature, 305 AuthorizationSet* output_params, string* output) { 306 keymaster_blob_t sig = {reinterpret_cast<const uint8_t*>(signature.c_str()), 307 signature.length()}; 308 keymaster_blob_t out_tmp; 309 keymaster_key_param_set_t out_params; 310 keymaster_error_t error = device()->finish(device(), op_handle_, &additional_params, 311 nullptr /* input */, &sig, &out_params, &out_tmp); 312 if (error != KM_ERROR_OK) { 313 EXPECT_TRUE(out_tmp.data == nullptr); 314 EXPECT_TRUE(out_params.params == nullptr); 315 return error; 316 } 317 318 if (out_tmp.data) 319 output->append(reinterpret_cast<const char*>(out_tmp.data), out_tmp.data_length); 320 free((void*)out_tmp.data); 321 if (output_params) 322 output_params->Reinitialize(out_params); 323 keymaster_free_param_set(&out_params); 324 return error; 325 } 326 327 keymaster_error_t Keymaster2Test::AbortOperation() { 328 return device()->abort(device(), op_handle_); 329 } 330 331 keymaster_error_t Keymaster2Test::AttestKey(const string& attest_challenge, 332 keymaster_cert_chain_t* cert_chain) { 333 AuthorizationSet attest_params; 334 attest_params.push_back(UserAuthParams()); 335 attest_params.push_back(ClientParams()); 336 attest_params.push_back(TAG_ATTESTATION_CHALLENGE, attest_challenge.data(), 337 attest_challenge.length()); 338 return device()->attest_key(device(), &blob_, &attest_params, cert_chain); 339 } 340 341 keymaster_error_t Keymaster2Test::UpgradeKey(const AuthorizationSet& upgrade_params) { 342 keymaster_key_blob_t upgraded_blob; 343 keymaster_error_t error = 344 device()->upgrade_key(device(), &blob_, &upgrade_params, &upgraded_blob); 345 if (error == KM_ERROR_OK) { 346 FreeKeyBlob(); 347 blob_ = upgraded_blob; 348 } 349 return error; 350 } 351 352 string Keymaster2Test::ProcessMessage(keymaster_purpose_t purpose, const string& message) { 353 EXPECT_EQ(KM_ERROR_OK, BeginOperation(purpose, client_params(), NULL /* output_params */)); 354 355 string result; 356 size_t input_consumed; 357 EXPECT_EQ(KM_ERROR_OK, UpdateOperation(message, &result, &input_consumed)); 358 EXPECT_EQ(message.size(), input_consumed); 359 EXPECT_EQ(KM_ERROR_OK, FinishOperation(&result)); 360 return result; 361 } 362 363 string Keymaster2Test::ProcessMessage(keymaster_purpose_t purpose, const string& message, 364 const AuthorizationSet& begin_params, 365 const AuthorizationSet& update_params, 366 AuthorizationSet* begin_out_params) { 367 EXPECT_EQ(KM_ERROR_OK, BeginOperation(purpose, begin_params, begin_out_params)); 368 369 string result; 370 size_t input_consumed; 371 EXPECT_EQ(KM_ERROR_OK, UpdateOperation(update_params, message, nullptr /* output_params */, 372 &result, &input_consumed)); 373 EXPECT_EQ(message.size(), input_consumed); 374 EXPECT_EQ(KM_ERROR_OK, FinishOperation(update_params, "", &result)); 375 return result; 376 } 377 378 string Keymaster2Test::ProcessMessage(keymaster_purpose_t purpose, const string& message, 379 const string& signature, const AuthorizationSet& begin_params, 380 const AuthorizationSet& update_params, 381 AuthorizationSet* output_params) { 382 EXPECT_EQ(KM_ERROR_OK, BeginOperation(purpose, begin_params, output_params)); 383 384 string result; 385 size_t input_consumed; 386 EXPECT_EQ(KM_ERROR_OK, UpdateOperation(update_params, message, nullptr /* output_params */, 387 &result, &input_consumed)); 388 EXPECT_EQ(message.size(), input_consumed); 389 EXPECT_EQ(KM_ERROR_OK, FinishOperation(update_params, signature, &result)); 390 return result; 391 } 392 393 string Keymaster2Test::ProcessMessage(keymaster_purpose_t purpose, const string& message, 394 const string& signature) { 395 EXPECT_EQ(KM_ERROR_OK, BeginOperation(purpose, client_params(), NULL /* output_params */)); 396 397 string result; 398 size_t input_consumed; 399 EXPECT_EQ(KM_ERROR_OK, UpdateOperation(message, &result, &input_consumed)); 400 EXPECT_EQ(message.size(), input_consumed); 401 EXPECT_EQ(KM_ERROR_OK, FinishOperation(signature, &result)); 402 return result; 403 } 404 405 void Keymaster2Test::SignMessage(const string& message, string* signature, 406 keymaster_digest_t digest) { 407 SCOPED_TRACE("SignMessage"); 408 AuthorizationSet input_params(AuthorizationSet(client_params_, array_length(client_params_))); 409 input_params.push_back(TAG_DIGEST, digest); 410 AuthorizationSet update_params; 411 AuthorizationSet output_params; 412 *signature = 413 ProcessMessage(KM_PURPOSE_SIGN, message, input_params, update_params, &output_params); 414 EXPECT_GT(signature->size(), 0U); 415 } 416 417 void Keymaster2Test::SignMessage(const string& message, string* signature, 418 keymaster_digest_t digest, keymaster_padding_t padding) { 419 SCOPED_TRACE("SignMessage"); 420 AuthorizationSet input_params(AuthorizationSet(client_params_, array_length(client_params_))); 421 input_params.push_back(TAG_DIGEST, digest); 422 input_params.push_back(TAG_PADDING, padding); 423 AuthorizationSet update_params; 424 AuthorizationSet output_params; 425 *signature = 426 ProcessMessage(KM_PURPOSE_SIGN, message, input_params, update_params, &output_params); 427 EXPECT_GT(signature->size(), 0U); 428 } 429 430 void Keymaster2Test::MacMessage(const string& message, string* signature, size_t mac_length) { 431 SCOPED_TRACE("SignMessage"); 432 AuthorizationSet input_params(AuthorizationSet(client_params_, array_length(client_params_))); 433 input_params.push_back(TAG_MAC_LENGTH, mac_length); 434 AuthorizationSet update_params; 435 AuthorizationSet output_params; 436 *signature = 437 ProcessMessage(KM_PURPOSE_SIGN, message, input_params, update_params, &output_params); 438 EXPECT_GT(signature->size(), 0U); 439 } 440 441 void Keymaster2Test::VerifyMessage(const string& message, const string& signature, 442 keymaster_digest_t digest) { 443 SCOPED_TRACE("VerifyMessage"); 444 AuthorizationSet input_params(client_params()); 445 input_params.push_back(TAG_DIGEST, digest); 446 AuthorizationSet update_params; 447 AuthorizationSet output_params; 448 ProcessMessage(KM_PURPOSE_VERIFY, message, signature, input_params, update_params, 449 &output_params); 450 } 451 452 void Keymaster2Test::VerifyMessage(const string& message, const string& signature, 453 keymaster_digest_t digest, keymaster_padding_t padding) { 454 SCOPED_TRACE("VerifyMessage"); 455 AuthorizationSet input_params(client_params()); 456 input_params.push_back(TAG_DIGEST, digest); 457 input_params.push_back(TAG_PADDING, padding); 458 AuthorizationSet update_params; 459 AuthorizationSet output_params; 460 ProcessMessage(KM_PURPOSE_VERIFY, message, signature, input_params, update_params, 461 &output_params); 462 } 463 464 void Keymaster2Test::VerifyMac(const string& message, const string& signature) { 465 SCOPED_TRACE("VerifyMac"); 466 ProcessMessage(KM_PURPOSE_VERIFY, message, signature); 467 } 468 469 string Keymaster2Test::EncryptMessage(const string& message, keymaster_padding_t padding, 470 string* generated_nonce) { 471 SCOPED_TRACE("EncryptMessage"); 472 AuthorizationSet begin_params(client_params()), output_params; 473 begin_params.push_back(TAG_PADDING, padding); 474 AuthorizationSet update_params; 475 string ciphertext = 476 ProcessMessage(KM_PURPOSE_ENCRYPT, message, begin_params, update_params, &output_params); 477 if (generated_nonce) { 478 keymaster_blob_t nonce_blob; 479 EXPECT_TRUE(output_params.GetTagValue(TAG_NONCE, &nonce_blob)); 480 *generated_nonce = make_string(nonce_blob.data, nonce_blob.data_length); 481 } else { 482 EXPECT_EQ(-1, output_params.find(TAG_NONCE)); 483 } 484 return ciphertext; 485 } 486 487 string Keymaster2Test::EncryptMessage(const string& message, keymaster_digest_t digest, 488 keymaster_padding_t padding, string* generated_nonce) { 489 AuthorizationSet update_params; 490 return EncryptMessage(update_params, message, digest, padding, generated_nonce); 491 } 492 493 string Keymaster2Test::EncryptMessage(const string& message, keymaster_block_mode_t block_mode, 494 keymaster_padding_t padding, string* generated_nonce) { 495 AuthorizationSet update_params; 496 return EncryptMessage(update_params, message, block_mode, padding, generated_nonce); 497 } 498 499 string Keymaster2Test::EncryptMessage(const AuthorizationSet& update_params, const string& message, 500 keymaster_digest_t digest, keymaster_padding_t padding, 501 string* generated_nonce) { 502 SCOPED_TRACE("EncryptMessage"); 503 AuthorizationSet begin_params(client_params()), output_params; 504 begin_params.push_back(TAG_PADDING, padding); 505 begin_params.push_back(TAG_DIGEST, digest); 506 string ciphertext = 507 ProcessMessage(KM_PURPOSE_ENCRYPT, message, begin_params, update_params, &output_params); 508 if (generated_nonce) { 509 keymaster_blob_t nonce_blob; 510 EXPECT_TRUE(output_params.GetTagValue(TAG_NONCE, &nonce_blob)); 511 *generated_nonce = make_string(nonce_blob.data, nonce_blob.data_length); 512 } else { 513 EXPECT_EQ(-1, output_params.find(TAG_NONCE)); 514 } 515 return ciphertext; 516 } 517 518 string Keymaster2Test::EncryptMessage(const AuthorizationSet& update_params, const string& message, 519 keymaster_block_mode_t block_mode, 520 keymaster_padding_t padding, string* generated_nonce) { 521 SCOPED_TRACE("EncryptMessage"); 522 AuthorizationSet begin_params(client_params()), output_params; 523 begin_params.push_back(TAG_PADDING, padding); 524 begin_params.push_back(TAG_BLOCK_MODE, block_mode); 525 string ciphertext = 526 ProcessMessage(KM_PURPOSE_ENCRYPT, message, begin_params, update_params, &output_params); 527 if (generated_nonce) { 528 keymaster_blob_t nonce_blob; 529 EXPECT_TRUE(output_params.GetTagValue(TAG_NONCE, &nonce_blob)); 530 *generated_nonce = make_string(nonce_blob.data, nonce_blob.data_length); 531 } else { 532 EXPECT_EQ(-1, output_params.find(TAG_NONCE)); 533 } 534 return ciphertext; 535 } 536 537 string Keymaster2Test::EncryptMessageWithParams(const string& message, 538 const AuthorizationSet& begin_params, 539 const AuthorizationSet& update_params, 540 AuthorizationSet* output_params) { 541 SCOPED_TRACE("EncryptMessageWithParams"); 542 return ProcessMessage(KM_PURPOSE_ENCRYPT, message, begin_params, update_params, output_params); 543 } 544 545 string Keymaster2Test::DecryptMessage(const string& ciphertext, keymaster_padding_t padding) { 546 SCOPED_TRACE("DecryptMessage"); 547 AuthorizationSet begin_params(client_params()); 548 begin_params.push_back(TAG_PADDING, padding); 549 AuthorizationSet update_params; 550 return ProcessMessage(KM_PURPOSE_DECRYPT, ciphertext, begin_params, update_params); 551 } 552 553 string Keymaster2Test::DecryptMessage(const string& ciphertext, keymaster_digest_t digest, 554 keymaster_padding_t padding) { 555 SCOPED_TRACE("DecryptMessage"); 556 AuthorizationSet begin_params(client_params()); 557 begin_params.push_back(TAG_PADDING, padding); 558 begin_params.push_back(TAG_DIGEST, digest); 559 AuthorizationSet update_params; 560 return ProcessMessage(KM_PURPOSE_DECRYPT, ciphertext, begin_params, update_params); 561 } 562 563 string Keymaster2Test::DecryptMessage(const string& ciphertext, keymaster_block_mode_t block_mode, 564 keymaster_padding_t padding) { 565 SCOPED_TRACE("DecryptMessage"); 566 AuthorizationSet begin_params(client_params()); 567 begin_params.push_back(TAG_PADDING, padding); 568 begin_params.push_back(TAG_BLOCK_MODE, block_mode); 569 AuthorizationSet update_params; 570 return ProcessMessage(KM_PURPOSE_DECRYPT, ciphertext, begin_params, update_params); 571 } 572 573 string Keymaster2Test::DecryptMessage(const string& ciphertext, keymaster_digest_t digest, 574 keymaster_padding_t padding, const string& nonce) { 575 SCOPED_TRACE("DecryptMessage"); 576 AuthorizationSet begin_params(client_params()); 577 begin_params.push_back(TAG_PADDING, padding); 578 begin_params.push_back(TAG_DIGEST, digest); 579 begin_params.push_back(TAG_NONCE, nonce.data(), nonce.size()); 580 AuthorizationSet update_params; 581 return ProcessMessage(KM_PURPOSE_DECRYPT, ciphertext, begin_params, update_params); 582 } 583 584 string Keymaster2Test::DecryptMessage(const string& ciphertext, keymaster_block_mode_t block_mode, 585 keymaster_padding_t padding, const string& nonce) { 586 SCOPED_TRACE("DecryptMessage"); 587 AuthorizationSet begin_params(client_params()); 588 begin_params.push_back(TAG_PADDING, padding); 589 begin_params.push_back(TAG_BLOCK_MODE, block_mode); 590 begin_params.push_back(TAG_NONCE, nonce.data(), nonce.size()); 591 AuthorizationSet update_params; 592 return ProcessMessage(KM_PURPOSE_DECRYPT, ciphertext, begin_params, update_params); 593 } 594 595 string Keymaster2Test::DecryptMessage(const AuthorizationSet& update_params, 596 const string& ciphertext, keymaster_digest_t digest, 597 keymaster_padding_t padding, const string& nonce) { 598 SCOPED_TRACE("DecryptMessage"); 599 AuthorizationSet begin_params(client_params()); 600 begin_params.push_back(TAG_PADDING, padding); 601 begin_params.push_back(TAG_DIGEST, digest); 602 begin_params.push_back(TAG_NONCE, nonce.data(), nonce.size()); 603 return ProcessMessage(KM_PURPOSE_DECRYPT, ciphertext, begin_params, update_params); 604 } 605 606 keymaster_error_t Keymaster2Test::GetCharacteristics() { 607 FreeCharacteristics(); 608 return device()->get_key_characteristics(device(), &blob_, &client_id_, NULL /* app_data */, 609 &characteristics_); 610 } 611 612 keymaster_error_t Keymaster2Test::ExportKey(keymaster_key_format_t format, string* export_data) { 613 keymaster_blob_t export_tmp; 614 keymaster_error_t error = device()->export_key(device(), format, &blob_, &client_id_, 615 NULL /* app_data */, &export_tmp); 616 617 if (error != KM_ERROR_OK) 618 return error; 619 620 *export_data = string(reinterpret_cast<const char*>(export_tmp.data), export_tmp.data_length); 621 free((void*)export_tmp.data); 622 return error; 623 } 624 625 void Keymaster2Test::CheckHmacTestVector(string key, string message, keymaster_digest_t digest, 626 string expected_mac) { 627 ASSERT_EQ(KM_ERROR_OK, ImportKey(AuthorizationSetBuilder() 628 .HmacKey(key.size() * 8) 629 .Authorization(TAG_MIN_MAC_LENGTH, expected_mac.size() * 8) 630 .Digest(digest), 631 KM_KEY_FORMAT_RAW, key)); 632 string signature; 633 MacMessage(message, &signature, expected_mac.size() * 8); 634 EXPECT_EQ(expected_mac, signature) << "Test vector didn't match for digest " << (int)digest; 635 } 636 637 void Keymaster2Test::CheckAesCtrTestVector(const string& key, const string& nonce, 638 const string& message, 639 const string& expected_ciphertext) { 640 ASSERT_EQ(KM_ERROR_OK, ImportKey(AuthorizationSetBuilder() 641 .AesEncryptionKey(key.size() * 8) 642 .Authorization(TAG_BLOCK_MODE, KM_MODE_CTR) 643 .Authorization(TAG_CALLER_NONCE) 644 .Padding(KM_PAD_NONE), 645 KM_KEY_FORMAT_RAW, key)); 646 647 AuthorizationSet begin_params(client_params()), update_params, output_params; 648 begin_params.push_back(TAG_NONCE, nonce.data(), nonce.size()); 649 begin_params.push_back(TAG_BLOCK_MODE, KM_MODE_CTR); 650 begin_params.push_back(TAG_PADDING, KM_PAD_NONE); 651 string ciphertext = 652 EncryptMessageWithParams(message, begin_params, update_params, &output_params); 653 EXPECT_EQ(expected_ciphertext, ciphertext); 654 } 655 656 AuthorizationSet Keymaster2Test::hw_enforced() { 657 return AuthorizationSet(characteristics_.hw_enforced); 658 } 659 660 AuthorizationSet Keymaster2Test::sw_enforced() { 661 return AuthorizationSet(characteristics_.sw_enforced); 662 } 663 664 void Keymaster2Test::FreeCharacteristics() { 665 keymaster_free_characteristics(&characteristics_); 666 } 667 668 void Keymaster2Test::FreeKeyBlob() { 669 free(const_cast<uint8_t*>(blob_.key_material)); 670 blob_.key_material = NULL; 671 } 672 673 void Keymaster2Test::corrupt_key_blob() { 674 assert(blob_.key_material); 675 uint8_t* tmp = const_cast<uint8_t*>(blob_.key_material); 676 ++tmp[blob_.key_material_size / 2]; 677 } 678 679 class Sha256OnlyWrapper { 680 public: 681 Sha256OnlyWrapper(const keymaster1_device_t* wrapped_device) : wrapped_device_(wrapped_device) { 682 683 new_module = *wrapped_device_->common.module; 684 new_module_name = std::string("SHA 256-only ") + wrapped_device_->common.module->name; 685 new_module.name = new_module_name.c_str(); 686 687 memset(&device_, 0, sizeof(device_)); 688 device_.common.module = &new_module; 689 690 device_.common.close = close_device; 691 device_.get_supported_algorithms = get_supported_algorithms; 692 device_.get_supported_block_modes = get_supported_block_modes; 693 device_.get_supported_padding_modes = get_supported_padding_modes; 694 device_.get_supported_digests = get_supported_digests; 695 device_.get_supported_import_formats = get_supported_import_formats; 696 device_.get_supported_export_formats = get_supported_export_formats; 697 device_.add_rng_entropy = add_rng_entropy; 698 device_.generate_key = generate_key; 699 device_.get_key_characteristics = get_key_characteristics; 700 device_.import_key = import_key; 701 device_.export_key = export_key; 702 device_.begin = begin; 703 device_.update = update; 704 device_.finish = finish; 705 device_.abort = abort; 706 } 707 708 keymaster1_device_t* keymaster_device() { return &device_; } 709 710 static bool is_supported(keymaster_digest_t digest) { 711 return digest == KM_DIGEST_NONE || digest == KM_DIGEST_SHA_2_256; 712 } 713 714 static bool all_digests_supported(const keymaster_key_param_set_t* params) { 715 for (size_t i = 0; i < params->length; ++i) 716 if (params->params[i].tag == TAG_DIGEST) 717 if (!is_supported(static_cast<keymaster_digest_t>(params->params[i].enumerated))) 718 return false; 719 return true; 720 } 721 722 static const keymaster_key_param_t* 723 get_algorithm_param(const keymaster_key_param_set_t* params) { 724 keymaster_key_param_t* end = params->params + params->length; 725 auto alg_ptr = std::find_if(params->params, end, [](keymaster_key_param_t& p) { 726 return p.tag == KM_TAG_ALGORITHM; 727 }); 728 if (alg_ptr == end) 729 return nullptr; 730 return alg_ptr; 731 } 732 733 static int close_device(hw_device_t* dev) { 734 Sha256OnlyWrapper* wrapper = reinterpret_cast<Sha256OnlyWrapper*>(dev); 735 const keymaster1_device_t* wrapped_device = wrapper->wrapped_device_; 736 delete wrapper; 737 return wrapped_device->common.close(const_cast<hw_device_t*>(&wrapped_device->common)); 738 } 739 740 static const keymaster1_device_t* unwrap(const keymaster1_device_t* dev) { 741 return reinterpret_cast<const Sha256OnlyWrapper*>(dev)->wrapped_device_; 742 } 743 744 static keymaster_error_t get_supported_algorithms(const struct keymaster1_device* dev, 745 keymaster_algorithm_t** algorithms, 746 size_t* algorithms_length) { 747 return unwrap(dev)->get_supported_algorithms(unwrap(dev), algorithms, algorithms_length); 748 } 749 static keymaster_error_t get_supported_block_modes(const struct keymaster1_device* dev, 750 keymaster_algorithm_t algorithm, 751 keymaster_purpose_t purpose, 752 keymaster_block_mode_t** modes, 753 size_t* modes_length) { 754 return unwrap(dev)->get_supported_block_modes(unwrap(dev), algorithm, purpose, modes, 755 modes_length); 756 } 757 static keymaster_error_t get_supported_padding_modes(const struct keymaster1_device* dev, 758 keymaster_algorithm_t algorithm, 759 keymaster_purpose_t purpose, 760 keymaster_padding_t** modes, 761 size_t* modes_length) { 762 return unwrap(dev)->get_supported_padding_modes(unwrap(dev), algorithm, purpose, modes, 763 modes_length); 764 } 765 766 static keymaster_error_t get_supported_digests(const keymaster1_device_t* dev, 767 keymaster_algorithm_t algorithm, 768 keymaster_purpose_t purpose, 769 keymaster_digest_t** digests, 770 size_t* digests_length) { 771 keymaster_error_t error = unwrap(dev)->get_supported_digests( 772 unwrap(dev), algorithm, purpose, digests, digests_length); 773 if (error != KM_ERROR_OK) 774 return error; 775 776 std::vector<keymaster_digest_t> filtered_digests; 777 std::copy_if(*digests, *digests + *digests_length, std::back_inserter(filtered_digests), 778 [](keymaster_digest_t digest) { return is_supported(digest); }); 779 780 free(*digests); 781 *digests_length = filtered_digests.size(); 782 *digests = reinterpret_cast<keymaster_digest_t*>( 783 malloc(*digests_length * sizeof(keymaster_digest_t))); 784 std::copy(filtered_digests.begin(), filtered_digests.end(), *digests); 785 786 return KM_ERROR_OK; 787 } 788 789 static keymaster_error_t get_supported_import_formats(const struct keymaster1_device* dev, 790 keymaster_algorithm_t algorithm, 791 keymaster_key_format_t** formats, 792 size_t* formats_length) { 793 return unwrap(dev)->get_supported_import_formats(unwrap(dev), algorithm, formats, 794 formats_length); 795 } 796 static keymaster_error_t get_supported_export_formats(const struct keymaster1_device* dev, 797 keymaster_algorithm_t algorithm, 798 keymaster_key_format_t** formats, 799 size_t* formats_length) { 800 return unwrap(dev)->get_supported_export_formats(unwrap(dev), algorithm, formats, 801 formats_length); 802 } 803 static keymaster_error_t add_rng_entropy(const struct keymaster1_device* dev, 804 const uint8_t* data, size_t data_length) { 805 return unwrap(dev)->add_rng_entropy(unwrap(dev), data, data_length); 806 } 807 808 static keymaster_error_t generate_key(const keymaster1_device_t* dev, 809 const keymaster_key_param_set_t* params, 810 keymaster_key_blob_t* key_blob, 811 keymaster_key_characteristics_t** characteristics) { 812 auto alg_ptr = get_algorithm_param(params); 813 if (!alg_ptr) 814 return KM_ERROR_UNSUPPORTED_ALGORITHM; 815 if (alg_ptr->enumerated == KM_ALGORITHM_HMAC && !all_digests_supported(params)) 816 return KM_ERROR_UNSUPPORTED_DIGEST; 817 818 return unwrap(dev)->generate_key(unwrap(dev), params, key_blob, characteristics); 819 } 820 821 static keymaster_error_t 822 get_key_characteristics(const struct keymaster1_device* dev, 823 const keymaster_key_blob_t* key_blob, const keymaster_blob_t* client_id, 824 const keymaster_blob_t* app_data, 825 keymaster_key_characteristics_t** characteristics) { 826 return unwrap(dev)->get_key_characteristics(unwrap(dev), key_blob, client_id, app_data, 827 characteristics); 828 } 829 830 static keymaster_error_t 831 import_key(const keymaster1_device_t* dev, const keymaster_key_param_set_t* params, 832 keymaster_key_format_t key_format, const keymaster_blob_t* key_data, 833 keymaster_key_blob_t* key_blob, keymaster_key_characteristics_t** characteristics) { 834 auto alg_ptr = get_algorithm_param(params); 835 if (!alg_ptr) 836 return KM_ERROR_UNSUPPORTED_ALGORITHM; 837 if (alg_ptr->enumerated == KM_ALGORITHM_HMAC && !all_digests_supported(params)) 838 return KM_ERROR_UNSUPPORTED_DIGEST; 839 840 return unwrap(dev)->import_key(unwrap(dev), params, key_format, key_data, key_blob, 841 characteristics); 842 } 843 844 static keymaster_error_t export_key(const struct keymaster1_device* dev, // 845 keymaster_key_format_t export_format, 846 const keymaster_key_blob_t* key_to_export, 847 const keymaster_blob_t* client_id, 848 const keymaster_blob_t* app_data, 849 keymaster_blob_t* export_data) { 850 return unwrap(dev)->export_key(unwrap(dev), export_format, key_to_export, client_id, 851 app_data, export_data); 852 } 853 854 static keymaster_error_t begin(const keymaster1_device_t* dev, // 855 keymaster_purpose_t purpose, const keymaster_key_blob_t* key, 856 const keymaster_key_param_set_t* in_params, 857 keymaster_key_param_set_t* out_params, 858 keymaster_operation_handle_t* operation_handle) { 859 if (!all_digests_supported(in_params)) 860 return KM_ERROR_UNSUPPORTED_DIGEST; 861 return unwrap(dev)->begin(unwrap(dev), purpose, key, in_params, out_params, 862 operation_handle); 863 } 864 865 static keymaster_error_t update(const keymaster1_device_t* dev, 866 keymaster_operation_handle_t operation_handle, 867 const keymaster_key_param_set_t* in_params, 868 const keymaster_blob_t* input, size_t* input_consumed, 869 keymaster_key_param_set_t* out_params, 870 keymaster_blob_t* output) { 871 return unwrap(dev)->update(unwrap(dev), operation_handle, in_params, input, input_consumed, 872 out_params, output); 873 } 874 875 static keymaster_error_t finish(const struct keymaster1_device* dev, // 876 keymaster_operation_handle_t operation_handle, 877 const keymaster_key_param_set_t* in_params, 878 const keymaster_blob_t* signature, 879 keymaster_key_param_set_t* out_params, 880 keymaster_blob_t* output) { 881 return unwrap(dev)->finish(unwrap(dev), operation_handle, in_params, signature, out_params, 882 output); 883 } 884 885 static keymaster_error_t abort(const struct keymaster1_device* dev, 886 keymaster_operation_handle_t operation_handle) { 887 return unwrap(dev)->abort(unwrap(dev), operation_handle); 888 } 889 890 private: 891 keymaster1_device_t device_; 892 const keymaster1_device_t* wrapped_device_; 893 hw_module_t new_module; 894 string new_module_name; 895 }; 896 897 keymaster1_device_t* make_device_sha256_only(keymaster1_device_t* device) { 898 return (new Sha256OnlyWrapper(device))->keymaster_device(); 899 } 900 901 } // namespace test 902 } // namespace keymaster 903
