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