content/child/webcrypto/test/test_helpers.cc

   1 // Copyright 2014 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 "content/child/webcrypto/test/test_helpers.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/file_util.h"
  10 #include "base/json/json_reader.h"
  11 #include "base/json/json_writer.h"
  12 #include "base/logging.h"
  13 #include "base/path_service.h"
  14 #include "base/stl_util.h"
  15 #include "base/strings/string_number_conversions.h"
  16 #include "base/strings/string_util.h"
  17 #include "base/values.h"
  18 #include "content/child/webcrypto/algorithm_dispatch.h"
  19 #include "content/child/webcrypto/crypto_data.h"
  20 #include "content/child/webcrypto/status.h"
  21 #include "content/child/webcrypto/webcrypto_util.h"
  22 #include "content/public/common/content_paths.h"
  23 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
  24 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
  25 #include "third_party/re2/re2/re2.h"
  26
  27 #if !defined(USE_OPENSSL)
  28 #include <nss.h>
  29 #include <pk11pub.h>
  30
  31 #include "crypto/nss_util.h"
  32 #include "crypto/scoped_nss_types.h"
  33 #endif
  34
  35 namespace content {
  36
  37 namespace webcrypto {
  38
  39 void PrintTo(const Status& status, ::std::ostream* os) {
  40   if (status.IsSuccess())
  41     *os << "Success";
  42   else
  43     *os << "Error type: " << status.error_type()
  44         << " Error details: " << status.error_details();
  45 }
  46
  47 bool operator==(const Status& a, const Status& b) {
  48   if (a.IsSuccess() != b.IsSuccess())
  49     return false;
  50   if (a.IsSuccess())
  51     return true;
  52   return a.error_type() == b.error_type() &&
  53          a.error_details() == b.error_details();
  54 }
  55
  56 bool operator!=(const Status& a, const Status& b) {
  57   return !(a == b);
  58 }
  59
  60 void PrintTo(const CryptoData& data, ::std::ostream* os) {
  61   *os << "[" << base::HexEncode(data.bytes(), data.byte_length()) << "]";
  62 }
  63
  64 bool operator==(const CryptoData& a, const CryptoData& b) {
  65   return a.byte_length() == b.byte_length() &&
  66          memcmp(a.bytes(), b.bytes(), a.byte_length()) == 0;
  67 }
  68
  69 bool operator!=(const CryptoData& a, const CryptoData& b) {
  70   return !(a == b);
  71 }
  72
  73 bool SupportsAesGcm() {
  74   std::vector<uint8_t> key_raw(16, 0);
  75
  76   blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  77   Status status = ImportKey(blink::WebCryptoKeyFormatRaw,
  78                             CryptoData(key_raw),
  79                             CreateAlgorithm(blink::WebCryptoAlgorithmIdAesGcm),
  80                             true,
  81                             blink::WebCryptoKeyUsageEncrypt,
  82                             &key);
  83
  84   if (status.IsError())
  85     EXPECT_EQ(blink::WebCryptoErrorTypeNotSupported, status.error_type());
  86   return status.IsSuccess();
  87 }
  88
  89 bool SupportsRsaOaep() {
  90 #if defined(USE_OPENSSL)
  91   return true;
  92 #else
  93   crypto::EnsureNSSInit();
  94   // TODO(eroman): Exclude version test for OS_CHROMEOS
  95 #if defined(USE_NSS)
  96   if (!NSS_VersionCheck("3.16.2"))
  97     return false;
  98 #endif
  99   crypto::ScopedPK11Slot slot(PK11_GetInternalKeySlot());
 100   return !!PK11_DoesMechanism(slot.get(), CKM_RSA_PKCS_OAEP);
 101 #endif
 102 }
 103
 104 bool SupportsRsaPrivateKeyImport() {
 105 // TODO(eroman): Exclude version test for OS_CHROMEOS
 106 #if defined(USE_NSS)
 107   crypto::EnsureNSSInit();
 108   if (!NSS_VersionCheck("3.16.2")) {
 109     LOG(WARNING) << "RSA key import is not supported by this version of NSS. "
 110                     "Skipping some tests";
 111     return false;
 112   }
 113 #endif
 114   return true;
 115 }
 116
 117 blink::WebCryptoAlgorithm CreateRsaHashedKeyGenAlgorithm(
 118     blink::WebCryptoAlgorithmId algorithm_id,
 119     const blink::WebCryptoAlgorithmId hash_id,
 120     unsigned int modulus_length,
 121     const std::vector<uint8_t>& public_exponent) {
 122   DCHECK(algorithm_id == blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5 ||
 123          algorithm_id == blink::WebCryptoAlgorithmIdRsaOaep);
 124   DCHECK(blink::WebCryptoAlgorithm::isHash(hash_id));
 125   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
 126       algorithm_id,
 127       new blink::WebCryptoRsaHashedKeyGenParams(
 128           CreateAlgorithm(hash_id),
 129           modulus_length,
 130           vector_as_array(&public_exponent),
 131           public_exponent.size()));
 132 }
 133
 134 std::vector<uint8_t> Corrupted(const std::vector<uint8_t>& input) {
 135   std::vector<uint8_t> corrupted_data(input);
 136   if (corrupted_data.empty())
 137     corrupted_data.push_back(0);
 138   corrupted_data[corrupted_data.size() / 2] ^= 0x01;
 139   return corrupted_data;
 140 }
 141
 142 std::vector<uint8_t> HexStringToBytes(const std::string& hex) {
 143   std::vector<uint8_t> bytes;
 144   base::HexStringToBytes(hex, &bytes);
 145   return bytes;
 146 }
 147
 148 std::vector<uint8_t> MakeJsonVector(const std::string& json_string) {
 149   return std::vector<uint8_t>(json_string.begin(), json_string.end());
 150 }
 151
 152 std::vector<uint8_t> MakeJsonVector(const base::DictionaryValue& dict) {
 153   std::string json;
 154   base::JSONWriter::Write(&dict, &json);
 155   return MakeJsonVector(json);
 156 }
 157
 158 ::testing::AssertionResult ReadJsonTestFile(const char* test_file_name,
 159                                             scoped_ptr<base::Value>* value) {
 160   base::FilePath test_data_dir;
 161   if (!PathService::Get(DIR_TEST_DATA, &test_data_dir))
 162     return ::testing::AssertionFailure() << "Couldn't retrieve test dir";
 163
 164   base::FilePath file_path =
 165       test_data_dir.AppendASCII("webcrypto").AppendASCII(test_file_name);
 166
 167   std::string file_contents;
 168   if (!base::ReadFileToString(file_path, &file_contents)) {
 169     return ::testing::AssertionFailure()
 170            << "Couldn't read test file: " << file_path.value();
 171   }
 172
 173   // Strip C++ style comments out of the "json" file, otherwise it cannot be
 174   // parsed.
 175   re2::RE2::GlobalReplace(&file_contents, re2::RE2("\\s*//.*"), "");
 176
 177   // Parse the JSON to a dictionary.
 178   value->reset(base::JSONReader::Read(file_contents));
 179   if (!value->get()) {
 180     return ::testing::AssertionFailure()
 181            << "Couldn't parse test file JSON: " << file_path.value();
 182   }
 183
 184   return ::testing::AssertionSuccess();
 185 }
 186
 187 ::testing::AssertionResult ReadJsonTestFileToList(
 188     const char* test_file_name,
 189     scoped_ptr<base::ListValue>* list) {
 190   // Read the JSON.
 191   scoped_ptr<base::Value> json;
 192   ::testing::AssertionResult result = ReadJsonTestFile(test_file_name, &json);
 193   if (!result)
 194     return result;
 195
 196   // Cast to an ListValue.
 197   base::ListValue* list_value = NULL;
 198   if (!json->GetAsList(&list_value) || !list_value)
 199     return ::testing::AssertionFailure() << "The JSON was not a list";
 200
 201   list->reset(list_value);
 202   ignore_result(json.release());
 203
 204   return ::testing::AssertionSuccess();
 205 }
 206
 207 std::vector<uint8_t> GetBytesFromHexString(base::DictionaryValue* dict,
 208                                            const char* property_name) {
 209   std::string hex_string;
 210   if (!dict->GetString(property_name, &hex_string)) {
 211     EXPECT_TRUE(false) << "Couldn't get string property: " << property_name;
 212     return std::vector<uint8_t>();
 213   }
 214
 215   return HexStringToBytes(hex_string);
 216 }
 217
 218 blink::WebCryptoAlgorithm GetDigestAlgorithm(base::DictionaryValue* dict,
 219                                              const char* property_name) {
 220   std::string algorithm_name;
 221   if (!dict->GetString(property_name, &algorithm_name)) {
 222     EXPECT_TRUE(false) << "Couldn't get string property: " << property_name;
 223     return blink::WebCryptoAlgorithm::createNull();
 224   }
 225
 226   struct {
 227     const char* name;
 228     blink::WebCryptoAlgorithmId id;
 229   } kDigestNameToId[] = {
 230         {"sha-1", blink::WebCryptoAlgorithmIdSha1},
 231         {"sha-256", blink::WebCryptoAlgorithmIdSha256},
 232         {"sha-384", blink::WebCryptoAlgorithmIdSha384},
 233         {"sha-512", blink::WebCryptoAlgorithmIdSha512},
 234     };
 235
 236   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kDigestNameToId); ++i) {
 237     if (kDigestNameToId[i].name == algorithm_name)
 238       return CreateAlgorithm(kDigestNameToId[i].id);
 239   }
 240
 241   return blink::WebCryptoAlgorithm::createNull();
 242 }
 243
 244 // Creates a comparator for |bufs| which operates on indices rather than values.
 245 class CompareUsingIndex {
 246  public:
 247   explicit CompareUsingIndex(const std::vector<std::vector<uint8_t> >* bufs)
 248       : bufs_(bufs) {}
 249
 250   bool operator()(size_t i1, size_t i2) { return (*bufs_)[i1] < (*bufs_)[i2]; }
 251
 252  private:
 253   const std::vector<std::vector<uint8_t> >* bufs_;
 254 };
 255
 256 bool CopiesExist(const std::vector<std::vector<uint8_t> >& bufs) {
 257   // Sort the indices of |bufs| into a separate vector. This reduces the amount
 258   // of data copied versus sorting |bufs| directly.
 259   std::vector<size_t> sorted_indices(bufs.size());
 260   for (size_t i = 0; i < sorted_indices.size(); ++i)
 261     sorted_indices[i] = i;
 262   std::sort(
 263       sorted_indices.begin(), sorted_indices.end(), CompareUsingIndex(&bufs));
 264
 265   // Scan for adjacent duplicates.
 266   for (size_t i = 1; i < sorted_indices.size(); ++i) {
 267     if (bufs[sorted_indices[i]] == bufs[sorted_indices[i - 1]])
 268       return true;
 269   }
 270   return false;
 271 }
 272
 273 blink::WebCryptoAlgorithm CreateAesKeyGenAlgorithm(
 274     blink::WebCryptoAlgorithmId aes_alg_id,
 275     unsigned short length) {
 276   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
 277       aes_alg_id, new blink::WebCryptoAesKeyGenParams(length));
 278 }
 279
 280 // The following key pair is comprised of the SPKI (public key) and PKCS#8
 281 // (private key) representations of the key pair provided in Example 1 of the
 282 // NIST test vectors at
 283 // ftp://ftp.rsa.com/pub/rsalabs/tmp/pkcs1v15sign-vectors.txt
 284 const unsigned int kModulusLengthBits = 1024;
 285 const char* const kPublicKeySpkiDerHex =
 286     "30819f300d06092a864886f70d010101050003818d0030818902818100a5"
 287     "6e4a0e701017589a5187dc7ea841d156f2ec0e36ad52a44dfeb1e61f7ad9"
 288     "91d8c51056ffedb162b4c0f283a12a88a394dff526ab7291cbb307ceabfc"
 289     "e0b1dfd5cd9508096d5b2b8b6df5d671ef6377c0921cb23c270a70e2598e"
 290     "6ff89d19f105acc2d3f0cb35f29280e1386b6f64c4ef22e1e1f20d0ce8cf"
 291     "fb2249bd9a21370203010001";
 292 const char* const kPrivateKeyPkcs8DerHex =
 293     "30820275020100300d06092a864886f70d01010105000482025f3082025b"
 294     "02010002818100a56e4a0e701017589a5187dc7ea841d156f2ec0e36ad52"
 295     "a44dfeb1e61f7ad991d8c51056ffedb162b4c0f283a12a88a394dff526ab"
 296     "7291cbb307ceabfce0b1dfd5cd9508096d5b2b8b6df5d671ef6377c0921c"
 297     "b23c270a70e2598e6ff89d19f105acc2d3f0cb35f29280e1386b6f64c4ef"
 298     "22e1e1f20d0ce8cffb2249bd9a2137020301000102818033a5042a90b27d"
 299     "4f5451ca9bbbd0b44771a101af884340aef9885f2a4bbe92e894a724ac3c"
 300     "568c8f97853ad07c0266c8c6a3ca0929f1e8f11231884429fc4d9ae55fee"
 301     "896a10ce707c3ed7e734e44727a39574501a532683109c2abacaba283c31"
 302     "b4bd2f53c3ee37e352cee34f9e503bd80c0622ad79c6dcee883547c6a3b3"
 303     "25024100e7e8942720a877517273a356053ea2a1bc0c94aa72d55c6e8629"
 304     "6b2dfc967948c0a72cbccca7eacb35706e09a1df55a1535bd9b3cc34160b"
 305     "3b6dcd3eda8e6443024100b69dca1cf7d4d7ec81e75b90fcca874abcde12"
 306     "3fd2700180aa90479b6e48de8d67ed24f9f19d85ba275874f542cd20dc72"
 307     "3e6963364a1f9425452b269a6799fd024028fa13938655be1f8a159cbaca"
 308     "5a72ea190c30089e19cd274a556f36c4f6e19f554b34c077790427bbdd8d"
 309     "d3ede2448328f385d81b30e8e43b2fffa02786197902401a8b38f398fa71"
 310     "2049898d7fb79ee0a77668791299cdfa09efc0e507acb21ed74301ef5bfd"
 311     "48be455eaeb6e1678255827580a8e4e8e14151d1510a82a3f2e729024027"
 312     "156aba4126d24a81f3a528cbfb27f56886f840a9f6e86e17a44b94fe9319"
 313     "584b8e22fdde1e5a2e3bd8aa5ba8d8584194eb2190acf832b847f13a3d24"
 314     "a79f4d";
 315 // The modulus and exponent (in hex) of kPublicKeySpkiDerHex
 316 const char* const kPublicKeyModulusHex =
 317     "A56E4A0E701017589A5187DC7EA841D156F2EC0E36AD52A44DFEB1E61F7AD991D8C51056"
 318     "FFEDB162B4C0F283A12A88A394DFF526AB7291CBB307CEABFCE0B1DFD5CD9508096D5B2B"
 319     "8B6DF5D671EF6377C0921CB23C270A70E2598E6FF89D19F105ACC2D3F0CB35F29280E138"
 320     "6B6F64C4EF22E1E1F20D0CE8CFFB2249BD9A2137";
 321 const char* const kPublicKeyExponentHex = "010001";
 322
 323 blink::WebCryptoKey ImportSecretKeyFromRaw(
 324     const std::vector<uint8_t>& key_raw,
 325     const blink::WebCryptoAlgorithm& algorithm,
 326     blink::WebCryptoKeyUsageMask usage) {
 327   blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
 328   bool extractable = true;
 329   EXPECT_EQ(Status::Success(),
 330             ImportKey(blink::WebCryptoKeyFormatRaw,
 331                       CryptoData(key_raw),
 332                       algorithm,
 333                       extractable,
 334                       usage,
 335                       &key));
 336
 337   EXPECT_FALSE(key.isNull());
 338   EXPECT_TRUE(key.handle());
 339   EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
 340   EXPECT_EQ(algorithm.id(), key.algorithm().id());
 341   EXPECT_EQ(extractable, key.extractable());
 342   EXPECT_EQ(usage, key.usages());
 343   return key;
 344 }
 345
 346 void ImportRsaKeyPair(const std::vector<uint8_t>& spki_der,
 347                       const std::vector<uint8_t>& pkcs8_der,
 348                       const blink::WebCryptoAlgorithm& algorithm,
 349                       bool extractable,
 350                       blink::WebCryptoKeyUsageMask public_key_usage_mask,
 351                       blink::WebCryptoKeyUsageMask private_key_usage_mask,
 352                       blink::WebCryptoKey* public_key,
 353                       blink::WebCryptoKey* private_key) {
 354   ASSERT_EQ(Status::Success(),
 355             ImportKey(blink::WebCryptoKeyFormatSpki,
 356                       CryptoData(spki_der),
 357                       algorithm,
 358                       true,
 359                       public_key_usage_mask,
 360                       public_key));
 361   EXPECT_FALSE(public_key->isNull());
 362   EXPECT_TRUE(public_key->handle());
 363   EXPECT_EQ(blink::WebCryptoKeyTypePublic, public_key->type());
 364   EXPECT_EQ(algorithm.id(), public_key->algorithm().id());
 365   EXPECT_TRUE(public_key->extractable());
 366   EXPECT_EQ(public_key_usage_mask, public_key->usages());
 367
 368   ASSERT_EQ(Status::Success(),
 369             ImportKey(blink::WebCryptoKeyFormatPkcs8,
 370                       CryptoData(pkcs8_der),
 371                       algorithm,
 372                       extractable,
 373                       private_key_usage_mask,
 374                       private_key));
 375   EXPECT_FALSE(private_key->isNull());
 376   EXPECT_TRUE(private_key->handle());
 377   EXPECT_EQ(blink::WebCryptoKeyTypePrivate, private_key->type());
 378   EXPECT_EQ(algorithm.id(), private_key->algorithm().id());
 379   EXPECT_EQ(extractable, private_key->extractable());
 380   EXPECT_EQ(private_key_usage_mask, private_key->usages());
 381 }
 382
 383 Status ImportKeyJwkFromDict(const base::DictionaryValue& dict,
 384                             const blink::WebCryptoAlgorithm& algorithm,
 385                             bool extractable,
 386                             blink::WebCryptoKeyUsageMask usage_mask,
 387                             blink::WebCryptoKey* key) {
 388   return ImportKey(blink::WebCryptoKeyFormatJwk,
 389                    CryptoData(MakeJsonVector(dict)),
 390                    algorithm,
 391                    extractable,
 392                    usage_mask,
 393                    key);
 394 }
 395
 396 scoped_ptr<base::DictionaryValue> GetJwkDictionary(
 397     const std::vector<uint8_t>& json) {
 398   base::StringPiece json_string(
 399       reinterpret_cast<const char*>(vector_as_array(&json)), json.size());
 400   base::Value* value = base::JSONReader::Read(json_string);
 401   EXPECT_TRUE(value);
 402   base::DictionaryValue* dict_value = NULL;
 403   value->GetAsDictionary(&dict_value);
 404   return scoped_ptr<base::DictionaryValue>(dict_value);
 405 }
 406
 407 // Verifies the input dictionary contains the expected values. Exact matches are
 408 // required on the fields examined.
 409 ::testing::AssertionResult VerifyJwk(
 410     const scoped_ptr<base::DictionaryValue>& dict,
 411     const std::string& kty_expected,
 412     const std::string& alg_expected,
 413     blink::WebCryptoKeyUsageMask use_mask_expected) {
 414   // ---- kty
 415   std::string value_string;
 416   if (!dict->GetString("kty", &value_string))
 417     return ::testing::AssertionFailure() << "Missing 'kty'";
 418   if (value_string != kty_expected)
 419     return ::testing::AssertionFailure() << "Expected 'kty' to be "
 420                                          << kty_expected << "but found "
 421                                          << value_string;
 422
 423   // ---- alg
 424   if (!dict->GetString("alg", &value_string))
 425     return ::testing::AssertionFailure() << "Missing 'alg'";
 426   if (value_string != alg_expected)
 427     return ::testing::AssertionFailure() << "Expected 'alg' to be "
 428                                          << alg_expected << " but found "
 429                                          << value_string;
 430
 431   // ---- ext
 432   // always expect ext == true in this case
 433   bool ext_value;
 434   if (!dict->GetBoolean("ext", &ext_value))
 435     return ::testing::AssertionFailure() << "Missing 'ext'";
 436   if (!ext_value)
 437     return ::testing::AssertionFailure()
 438            << "Expected 'ext' to be true but found false";
 439
 440   // ---- key_ops
 441   base::ListValue* key_ops;
 442   if (!dict->GetList("key_ops", &key_ops))
 443     return ::testing::AssertionFailure() << "Missing 'key_ops'";
 444   blink::WebCryptoKeyUsageMask key_ops_mask = 0;
 445   Status status = GetWebCryptoUsagesFromJwkKeyOps(key_ops, &key_ops_mask);
 446   if (status.IsError())
 447     return ::testing::AssertionFailure() << "Failure extracting 'key_ops'";
 448   if (key_ops_mask != use_mask_expected)
 449     return ::testing::AssertionFailure()
 450            << "Expected 'key_ops' mask to be " << use_mask_expected
 451            << " but found " << key_ops_mask << " (" << value_string << ")";
 452
 453   return ::testing::AssertionSuccess();
 454 }
 455
 456 ::testing::AssertionResult VerifySecretJwk(
 457     const std::vector<uint8_t>& json,
 458     const std::string& alg_expected,
 459     const std::string& k_expected_hex,
 460     blink::WebCryptoKeyUsageMask use_mask_expected) {
 461   scoped_ptr<base::DictionaryValue> dict = GetJwkDictionary(json);
 462   if (!dict.get() || dict->empty())
 463     return ::testing::AssertionFailure() << "JSON parsing failed";
 464
 465   // ---- k
 466   std::string value_string;
 467   if (!dict->GetString("k", &value_string))
 468     return ::testing::AssertionFailure() << "Missing 'k'";
 469   std::string k_value;
 470   if (!Base64DecodeUrlSafe(value_string, &k_value))
 471     return ::testing::AssertionFailure() << "Base64DecodeUrlSafe(k) failed";
 472   if (!LowerCaseEqualsASCII(base::HexEncode(k_value.data(), k_value.size()),
 473                             k_expected_hex.c_str())) {
 474     return ::testing::AssertionFailure() << "Expected 'k' to be "
 475                                          << k_expected_hex
 476                                          << " but found something different";
 477   }
 478
 479   return VerifyJwk(dict, "oct", alg_expected, use_mask_expected);
 480 }
 481
 482 ::testing::AssertionResult VerifyPublicJwk(
 483     const std::vector<uint8_t>& json,
 484     const std::string& alg_expected,
 485     const std::string& n_expected_hex,
 486     const std::string& e_expected_hex,
 487     blink::WebCryptoKeyUsageMask use_mask_expected) {
 488   scoped_ptr<base::DictionaryValue> dict = GetJwkDictionary(json);
 489   if (!dict.get() || dict->empty())
 490     return ::testing::AssertionFailure() << "JSON parsing failed";
 491
 492   // ---- n
 493   std::string value_string;
 494   if (!dict->GetString("n", &value_string))
 495     return ::testing::AssertionFailure() << "Missing 'n'";
 496   std::string n_value;
 497   if (!Base64DecodeUrlSafe(value_string, &n_value))
 498     return ::testing::AssertionFailure() << "Base64DecodeUrlSafe(n) failed";
 499   if (base::HexEncode(n_value.data(), n_value.size()) != n_expected_hex) {
 500     return ::testing::AssertionFailure() << "'n' does not match the expected "
 501                                             "value";
 502   }
 503   // TODO(padolph): LowerCaseEqualsASCII() does not work for above!
 504
 505   // ---- e
 506   if (!dict->GetString("e", &value_string))
 507     return ::testing::AssertionFailure() << "Missing 'e'";
 508   std::string e_value;
 509   if (!Base64DecodeUrlSafe(value_string, &e_value))
 510     return ::testing::AssertionFailure() << "Base64DecodeUrlSafe(e) failed";
 511   if (!LowerCaseEqualsASCII(base::HexEncode(e_value.data(), e_value.size()),
 512                             e_expected_hex.c_str())) {
 513     return ::testing::AssertionFailure() << "Expected 'e' to be "
 514                                          << e_expected_hex
 515                                          << " but found something different";
 516   }
 517
 518   return VerifyJwk(dict, "RSA", alg_expected, use_mask_expected);
 519 }
 520
 521 void ImportExportJwkSymmetricKey(
 522     int key_len_bits,
 523     const blink::WebCryptoAlgorithm& import_algorithm,
 524     blink::WebCryptoKeyUsageMask usages,
 525     const std::string& jwk_alg) {
 526   std::vector<uint8_t> json;
 527   std::string key_hex;
 528
 529   // Hardcoded pseudo-random bytes to use for keys of different lengths.
 530   switch (key_len_bits) {
 531     case 128:
 532       key_hex = "3f1e7cd4f6f8543f6b1e16002e688623";
 533       break;
 534     case 256:
 535       key_hex =
 536           "bd08286b81a74783fd1ccf46b7e05af84ee25ae021210074159e0c4d9d907692";
 537       break;
 538     case 384:
 539       key_hex =
 540           "a22c5441c8b185602283d64c7221de1d0951e706bfc09539435ec0e0ed614e1d40"
 541           "6623f2b31d31819fec30993380dd82";
 542       break;
 543     case 512:
 544       key_hex =
 545           "5834f639000d4cf82de124fbfd26fb88d463e99f839a76ba41ac88967c80a3f61e"
 546           "1239a452e573dba0750e988152988576efd75b8d0229b7aca2ada2afd392ee";
 547       break;
 548     default:
 549       FAIL() << "Unexpected key_len_bits" << key_len_bits;
 550   }
 551
 552   // Import a raw key.
 553   blink::WebCryptoKey key = ImportSecretKeyFromRaw(
 554       HexStringToBytes(key_hex), import_algorithm, usages);
 555
 556   // Export the key in JWK format and validate.
 557   ASSERT_EQ(Status::Success(),
 558             ExportKey(blink::WebCryptoKeyFormatJwk, key, &json));
 559   EXPECT_TRUE(VerifySecretJwk(json, jwk_alg, key_hex, usages));
 560
 561   // Import the JWK-formatted key.
 562   ASSERT_EQ(Status::Success(),
 563             ImportKey(blink::WebCryptoKeyFormatJwk,
 564                       CryptoData(json),
 565                       import_algorithm,
 566                       true,
 567                       usages,
 568                       &key));
 569   EXPECT_TRUE(key.handle());
 570   EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
 571   EXPECT_EQ(import_algorithm.id(), key.algorithm().id());
 572   EXPECT_EQ(true, key.extractable());
 573   EXPECT_EQ(usages, key.usages());
 574
 575   // Export the key in raw format and compare to the original.
 576   std::vector<uint8_t> key_raw_out;
 577   ASSERT_EQ(Status::Success(),
 578             ExportKey(blink::WebCryptoKeyFormatRaw, key, &key_raw_out));
 579   EXPECT_BYTES_EQ_HEX(key_hex, key_raw_out);
 580 }
 581
 582 }  // namespace webcrypto
 583
 584 }  // namesapce content