src/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/generate_key_result.h"
  21 #include "content/child/webcrypto/jwk.h"
  22 #include "content/child/webcrypto/status.h"
  23 #include "content/child/webcrypto/webcrypto_util.h"
  24 #include "content/public/common/content_paths.h"
  25 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
  26 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
  27 #include "third_party/re2/re2/re2.h"
  28
  29 #if !defined(USE_OPENSSL)
  30 #include <nss.h>
  31 #include <pk11pub.h>
  32
  33 #include "crypto/nss_util.h"
  34 #include "crypto/scoped_nss_types.h"
  35 #endif
  36
  37 namespace content {
  38
  39 namespace webcrypto {
  40
  41 void PrintTo(const Status& status, ::std::ostream* os) {
  42   *os << StatusToString(status);
  43 }
  44
  45 bool operator==(const Status& a, const Status& b) {
  46   if (a.IsSuccess() != b.IsSuccess())
  47     return false;
  48   if (a.IsSuccess())
  49     return true;
  50   return a.error_type() == b.error_type() &&
  51          a.error_details() == b.error_details();
  52 }
  53
  54 bool operator!=(const Status& a, const Status& b) {
  55   return !(a == b);
  56 }
  57
  58 void PrintTo(const CryptoData& data, ::std::ostream* os) {
  59   *os << "[" << base::HexEncode(data.bytes(), data.byte_length()) << "]";
  60 }
  61
  62 bool operator==(const CryptoData& a, const CryptoData& b) {
  63   return a.byte_length() == b.byte_length() &&
  64          memcmp(a.bytes(), b.bytes(), a.byte_length()) == 0;
  65 }
  66
  67 bool operator!=(const CryptoData& a, const CryptoData& b) {
  68   return !(a == b);
  69 }
  70
  71 static std::string ErrorTypeToString(blink::WebCryptoErrorType type) {
  72   switch (type) {
  73     case blink::WebCryptoErrorTypeNotSupported:
  74       return "NotSupported";
  75     case blink::WebCryptoErrorTypeType:
  76       return "TypeError";
  77     case blink::WebCryptoErrorTypeData:
  78       return "DataError";
  79     case blink::WebCryptoErrorTypeSyntax:
  80       return "SyntaxError";
  81     case blink::WebCryptoErrorTypeOperation:
  82       return "OperationError";
  83     case blink::WebCryptoErrorTypeUnknown:
  84       return "UnknownError";
  85     case blink::WebCryptoErrorTypeInvalidState:
  86       return "InvalidState";
  87     case blink::WebCryptoErrorTypeInvalidAccess:
  88       return "InvalidAccess";
  89   }
  90
  91   return "?";
  92 }
  93
  94 std::string StatusToString(const Status& status) {
  95   if (status.IsSuccess())
  96     return "Success";
  97
  98   std::string result = ErrorTypeToString(status.error_type());
  99   if (!status.error_details().empty())
 100     result += ": " + status.error_details();
 101   return result;
 102 }
 103
 104 bool SupportsAesGcm() {
 105   std::vector<uint8_t> key_raw(16, 0);
 106
 107   blink::WebCryptoKey key;
 108   Status status = ImportKey(blink::WebCryptoKeyFormatRaw,
 109                             CryptoData(key_raw),
 110                             CreateAlgorithm(blink::WebCryptoAlgorithmIdAesGcm),
 111                             true,
 112                             blink::WebCryptoKeyUsageEncrypt,
 113                             &key);
 114
 115   if (status.IsError())
 116     EXPECT_EQ(blink::WebCryptoErrorTypeNotSupported, status.error_type());
 117   return status.IsSuccess();
 118 }
 119
 120 bool SupportsRsaOaep() {
 121 #if defined(USE_OPENSSL)
 122   return true;
 123 #else
 124   crypto::EnsureNSSInit();
 125   // TODO(eroman): Exclude version test for OS_CHROMEOS
 126 #if defined(USE_NSS)
 127   if (!NSS_VersionCheck("3.16.2"))
 128     return false;
 129 #endif
 130   crypto::ScopedPK11Slot slot(PK11_GetInternalKeySlot());
 131   return !!PK11_DoesMechanism(slot.get(), CKM_RSA_PKCS_OAEP);
 132 #endif
 133 }
 134
 135 bool SupportsRsaPrivateKeyImport() {
 136 // TODO(eroman): Exclude version test for OS_CHROMEOS
 137 #if defined(USE_NSS)
 138   crypto::EnsureNSSInit();
 139   if (!NSS_VersionCheck("3.16.2")) {
 140     LOG(WARNING) << "RSA key import is not supported by this version of NSS. "
 141                     "Skipping some tests";
 142     return false;
 143   }
 144 #endif
 145   return true;
 146 }
 147
 148 blink::WebCryptoAlgorithm CreateRsaHashedKeyGenAlgorithm(
 149     blink::WebCryptoAlgorithmId algorithm_id,
 150     const blink::WebCryptoAlgorithmId hash_id,
 151     unsigned int modulus_length,
 152     const std::vector<uint8_t>& public_exponent) {
 153   DCHECK(blink::WebCryptoAlgorithm::isHash(hash_id));
 154   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
 155       algorithm_id,
 156       new blink::WebCryptoRsaHashedKeyGenParams(
 157           CreateAlgorithm(hash_id),
 158           modulus_length,
 159           vector_as_array(&public_exponent),
 160           public_exponent.size()));
 161 }
 162
 163 std::vector<uint8_t> Corrupted(const std::vector<uint8_t>& input) {
 164   std::vector<uint8_t> corrupted_data(input);
 165   if (corrupted_data.empty())
 166     corrupted_data.push_back(0);
 167   corrupted_data[corrupted_data.size() / 2] ^= 0x01;
 168   return corrupted_data;
 169 }
 170
 171 std::vector<uint8_t> HexStringToBytes(const std::string& hex) {
 172   std::vector<uint8_t> bytes;
 173   base::HexStringToBytes(hex, &bytes);
 174   return bytes;
 175 }
 176
 177 std::vector<uint8_t> MakeJsonVector(const std::string& json_string) {
 178   return std::vector<uint8_t>(json_string.begin(), json_string.end());
 179 }
 180
 181 std::vector<uint8_t> MakeJsonVector(const base::DictionaryValue& dict) {
 182   std::string json;
 183   base::JSONWriter::Write(&dict, &json);
 184   return MakeJsonVector(json);
 185 }
 186
 187 ::testing::AssertionResult ReadJsonTestFile(const char* test_file_name,
 188                                             scoped_ptr<base::Value>* value) {
 189   base::FilePath test_data_dir;
 190   if (!PathService::Get(DIR_TEST_DATA, &test_data_dir))
 191     return ::testing::AssertionFailure() << "Couldn't retrieve test dir";
 192
 193   base::FilePath file_path =
 194       test_data_dir.AppendASCII("webcrypto").AppendASCII(test_file_name);
 195
 196   std::string file_contents;
 197   if (!base::ReadFileToString(file_path, &file_contents)) {
 198     return ::testing::AssertionFailure()
 199            << "Couldn't read test file: " << file_path.value();
 200   }
 201
 202   // Strip C++ style comments out of the "json" file, otherwise it cannot be
 203   // parsed.
 204   re2::RE2::GlobalReplace(&file_contents, re2::RE2("\\s*//.*"), "");
 205
 206   // Parse the JSON to a dictionary.
 207   value->reset(base::JSONReader::Read(file_contents));
 208   if (!value->get()) {
 209     return ::testing::AssertionFailure()
 210            << "Couldn't parse test file JSON: " << file_path.value();
 211   }
 212
 213   return ::testing::AssertionSuccess();
 214 }
 215
 216 ::testing::AssertionResult ReadJsonTestFileToList(
 217     const char* test_file_name,
 218     scoped_ptr<base::ListValue>* list) {
 219   // Read the JSON.
 220   scoped_ptr<base::Value> json;
 221   ::testing::AssertionResult result = ReadJsonTestFile(test_file_name, &json);
 222   if (!result)
 223     return result;
 224
 225   // Cast to an ListValue.
 226   base::ListValue* list_value = NULL;
 227   if (!json->GetAsList(&list_value) || !list_value)
 228     return ::testing::AssertionFailure() << "The JSON was not a list";
 229
 230   list->reset(list_value);
 231   ignore_result(json.release());
 232
 233   return ::testing::AssertionSuccess();
 234 }
 235
 236 ::testing::AssertionResult ReadJsonTestFileToDictionary(
 237     const char* test_file_name,
 238     scoped_ptr<base::DictionaryValue>* dict) {
 239   // Read the JSON.
 240   scoped_ptr<base::Value> json;
 241   ::testing::AssertionResult result = ReadJsonTestFile(test_file_name, &json);
 242   if (!result)
 243     return result;
 244
 245   // Cast to an DictionaryValue.
 246   base::DictionaryValue* dict_value = NULL;
 247   if (!json->GetAsDictionary(&dict_value) || !dict_value)
 248     return ::testing::AssertionFailure() << "The JSON was not a dictionary";
 249
 250   dict->reset(dict_value);
 251   ignore_result(json.release());
 252
 253   return ::testing::AssertionSuccess();
 254 }
 255
 256 std::vector<uint8_t> GetBytesFromHexString(const base::DictionaryValue* dict,
 257                                            const std::string& property_name) {
 258   std::string hex_string;
 259   if (!dict->GetString(property_name, &hex_string)) {
 260     EXPECT_TRUE(false) << "Couldn't get string property: " << property_name;
 261     return std::vector<uint8_t>();
 262   }
 263
 264   return HexStringToBytes(hex_string);
 265 }
 266
 267 blink::WebCryptoAlgorithm GetDigestAlgorithm(const base::DictionaryValue* dict,
 268                                              const char* property_name) {
 269   std::string algorithm_name;
 270   if (!dict->GetString(property_name, &algorithm_name)) {
 271     EXPECT_TRUE(false) << "Couldn't get string property: " << property_name;
 272     return blink::WebCryptoAlgorithm::createNull();
 273   }
 274
 275   struct {
 276     const char* name;
 277     blink::WebCryptoAlgorithmId id;
 278   } kDigestNameToId[] = {
 279         {"sha-1", blink::WebCryptoAlgorithmIdSha1},
 280         {"sha-256", blink::WebCryptoAlgorithmIdSha256},
 281         {"sha-384", blink::WebCryptoAlgorithmIdSha384},
 282         {"sha-512", blink::WebCryptoAlgorithmIdSha512},
 283     };
 284
 285   for (size_t i = 0; i < arraysize(kDigestNameToId); ++i) {
 286     if (kDigestNameToId[i].name == algorithm_name)
 287       return CreateAlgorithm(kDigestNameToId[i].id);
 288   }
 289
 290   return blink::WebCryptoAlgorithm::createNull();
 291 }
 292
 293 // Creates a comparator for |bufs| which operates on indices rather than values.
 294 class CompareUsingIndex {
 295  public:
 296   explicit CompareUsingIndex(const std::vector<std::vector<uint8_t> >* bufs)
 297       : bufs_(bufs) {}
 298
 299   bool operator()(size_t i1, size_t i2) { return (*bufs_)[i1] < (*bufs_)[i2]; }
 300
 301  private:
 302   const std::vector<std::vector<uint8_t> >* bufs_;
 303 };
 304
 305 bool CopiesExist(const std::vector<std::vector<uint8_t> >& bufs) {
 306   // Sort the indices of |bufs| into a separate vector. This reduces the amount
 307   // of data copied versus sorting |bufs| directly.
 308   std::vector<size_t> sorted_indices(bufs.size());
 309   for (size_t i = 0; i < sorted_indices.size(); ++i)
 310     sorted_indices[i] = i;
 311   std::sort(
 312       sorted_indices.begin(), sorted_indices.end(), CompareUsingIndex(&bufs));
 313
 314   // Scan for adjacent duplicates.
 315   for (size_t i = 1; i < sorted_indices.size(); ++i) {
 316     if (bufs[sorted_indices[i]] == bufs[sorted_indices[i - 1]])
 317       return true;
 318   }
 319   return false;
 320 }
 321
 322 blink::WebCryptoAlgorithm CreateAesKeyGenAlgorithm(
 323     blink::WebCryptoAlgorithmId aes_alg_id,
 324     unsigned short length) {
 325   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
 326       aes_alg_id, new blink::WebCryptoAesKeyGenParams(length));
 327 }
 328
 329 // The following key pair is comprised of the SPKI (public key) and PKCS#8
 330 // (private key) representations of the key pair provided in Example 1 of the
 331 // NIST test vectors at
 332 // ftp://ftp.rsa.com/pub/rsalabs/tmp/pkcs1v15sign-vectors.txt
 333 const unsigned int kModulusLengthBits = 1024;
 334 const char* const kPublicKeySpkiDerHex =
 335     "30819f300d06092a864886f70d010101050003818d0030818902818100a5"
 336     "6e4a0e701017589a5187dc7ea841d156f2ec0e36ad52a44dfeb1e61f7ad9"
 337     "91d8c51056ffedb162b4c0f283a12a88a394dff526ab7291cbb307ceabfc"
 338     "e0b1dfd5cd9508096d5b2b8b6df5d671ef6377c0921cb23c270a70e2598e"
 339     "6ff89d19f105acc2d3f0cb35f29280e1386b6f64c4ef22e1e1f20d0ce8cf"
 340     "fb2249bd9a21370203010001";
 341 const char* const kPrivateKeyPkcs8DerHex =
 342     "30820275020100300d06092a864886f70d01010105000482025f3082025b"
 343     "02010002818100a56e4a0e701017589a5187dc7ea841d156f2ec0e36ad52"
 344     "a44dfeb1e61f7ad991d8c51056ffedb162b4c0f283a12a88a394dff526ab"
 345     "7291cbb307ceabfce0b1dfd5cd9508096d5b2b8b6df5d671ef6377c0921c"
 346     "b23c270a70e2598e6ff89d19f105acc2d3f0cb35f29280e1386b6f64c4ef"
 347     "22e1e1f20d0ce8cffb2249bd9a2137020301000102818033a5042a90b27d"
 348     "4f5451ca9bbbd0b44771a101af884340aef9885f2a4bbe92e894a724ac3c"
 349     "568c8f97853ad07c0266c8c6a3ca0929f1e8f11231884429fc4d9ae55fee"
 350     "896a10ce707c3ed7e734e44727a39574501a532683109c2abacaba283c31"
 351     "b4bd2f53c3ee37e352cee34f9e503bd80c0622ad79c6dcee883547c6a3b3"
 352     "25024100e7e8942720a877517273a356053ea2a1bc0c94aa72d55c6e8629"
 353     "6b2dfc967948c0a72cbccca7eacb35706e09a1df55a1535bd9b3cc34160b"
 354     "3b6dcd3eda8e6443024100b69dca1cf7d4d7ec81e75b90fcca874abcde12"
 355     "3fd2700180aa90479b6e48de8d67ed24f9f19d85ba275874f542cd20dc72"
 356     "3e6963364a1f9425452b269a6799fd024028fa13938655be1f8a159cbaca"
 357     "5a72ea190c30089e19cd274a556f36c4f6e19f554b34c077790427bbdd8d"
 358     "d3ede2448328f385d81b30e8e43b2fffa02786197902401a8b38f398fa71"
 359     "2049898d7fb79ee0a77668791299cdfa09efc0e507acb21ed74301ef5bfd"
 360     "48be455eaeb6e1678255827580a8e4e8e14151d1510a82a3f2e729024027"
 361     "156aba4126d24a81f3a528cbfb27f56886f840a9f6e86e17a44b94fe9319"
 362     "584b8e22fdde1e5a2e3bd8aa5ba8d8584194eb2190acf832b847f13a3d24"
 363     "a79f4d";
 364 // The modulus and exponent (in hex) of kPublicKeySpkiDerHex
 365 const char* const kPublicKeyModulusHex =
 366     "A56E4A0E701017589A5187DC7EA841D156F2EC0E36AD52A44DFEB1E61F7AD991D8C51056"
 367     "FFEDB162B4C0F283A12A88A394DFF526AB7291CBB307CEABFCE0B1DFD5CD9508096D5B2B"
 368     "8B6DF5D671EF6377C0921CB23C270A70E2598E6FF89D19F105ACC2D3F0CB35F29280E138"
 369     "6B6F64C4EF22E1E1F20D0CE8CFFB2249BD9A2137";
 370 const char* const kPublicKeyExponentHex = "010001";
 371
 372 blink::WebCryptoKey ImportSecretKeyFromRaw(
 373     const std::vector<uint8_t>& key_raw,
 374     const blink::WebCryptoAlgorithm& algorithm,
 375     blink::WebCryptoKeyUsageMask usage) {
 376   blink::WebCryptoKey key;
 377   bool extractable = true;
 378   EXPECT_EQ(Status::Success(),
 379             ImportKey(blink::WebCryptoKeyFormatRaw,
 380                       CryptoData(key_raw),
 381                       algorithm,
 382                       extractable,
 383                       usage,
 384                       &key));
 385
 386   EXPECT_FALSE(key.isNull());
 387   EXPECT_TRUE(key.handle());
 388   EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
 389   EXPECT_EQ(algorithm.id(), key.algorithm().id());
 390   EXPECT_EQ(extractable, key.extractable());
 391   EXPECT_EQ(usage, key.usages());
 392   return key;
 393 }
 394
 395 void ImportRsaKeyPair(const std::vector<uint8_t>& spki_der,
 396                       const std::vector<uint8_t>& pkcs8_der,
 397                       const blink::WebCryptoAlgorithm& algorithm,
 398                       bool extractable,
 399                       blink::WebCryptoKeyUsageMask public_key_usages,
 400                       blink::WebCryptoKeyUsageMask private_key_usages,
 401                       blink::WebCryptoKey* public_key,
 402                       blink::WebCryptoKey* private_key) {
 403   ASSERT_EQ(Status::Success(),
 404             ImportKey(blink::WebCryptoKeyFormatSpki,
 405                       CryptoData(spki_der),
 406                       algorithm,
 407                       true,
 408                       public_key_usages,
 409                       public_key));
 410   EXPECT_FALSE(public_key->isNull());
 411   EXPECT_TRUE(public_key->handle());
 412   EXPECT_EQ(blink::WebCryptoKeyTypePublic, public_key->type());
 413   EXPECT_EQ(algorithm.id(), public_key->algorithm().id());
 414   EXPECT_TRUE(public_key->extractable());
 415   EXPECT_EQ(public_key_usages, public_key->usages());
 416
 417   ASSERT_EQ(Status::Success(),
 418             ImportKey(blink::WebCryptoKeyFormatPkcs8,
 419                       CryptoData(pkcs8_der),
 420                       algorithm,
 421                       extractable,
 422                       private_key_usages,
 423                       private_key));
 424   EXPECT_FALSE(private_key->isNull());
 425   EXPECT_TRUE(private_key->handle());
 426   EXPECT_EQ(blink::WebCryptoKeyTypePrivate, private_key->type());
 427   EXPECT_EQ(algorithm.id(), private_key->algorithm().id());
 428   EXPECT_EQ(extractable, private_key->extractable());
 429   EXPECT_EQ(private_key_usages, private_key->usages());
 430 }
 431
 432 Status ImportKeyJwkFromDict(const base::DictionaryValue& dict,
 433                             const blink::WebCryptoAlgorithm& algorithm,
 434                             bool extractable,
 435                             blink::WebCryptoKeyUsageMask usages,
 436                             blink::WebCryptoKey* key) {
 437   return ImportKey(blink::WebCryptoKeyFormatJwk,
 438                    CryptoData(MakeJsonVector(dict)),
 439                    algorithm,
 440                    extractable,
 441                    usages,
 442                    key);
 443 }
 444
 445 scoped_ptr<base::DictionaryValue> GetJwkDictionary(
 446     const std::vector<uint8_t>& json) {
 447   base::StringPiece json_string(
 448       reinterpret_cast<const char*>(vector_as_array(&json)), json.size());
 449   base::Value* value = base::JSONReader::Read(json_string);
 450   EXPECT_TRUE(value);
 451   base::DictionaryValue* dict_value = NULL;
 452   value->GetAsDictionary(&dict_value);
 453   return scoped_ptr<base::DictionaryValue>(dict_value);
 454 }
 455
 456 // Verifies the input dictionary contains the expected values. Exact matches are
 457 // required on the fields examined.
 458 ::testing::AssertionResult VerifyJwk(
 459     const scoped_ptr<base::DictionaryValue>& dict,
 460     const std::string& kty_expected,
 461     const std::string& alg_expected,
 462     blink::WebCryptoKeyUsageMask use_mask_expected) {
 463   // ---- kty
 464   std::string value_string;
 465   if (!dict->GetString("kty", &value_string))
 466     return ::testing::AssertionFailure() << "Missing 'kty'";
 467   if (value_string != kty_expected)
 468     return ::testing::AssertionFailure() << "Expected 'kty' to be "
 469                                          << kty_expected << "but found "
 470                                          << value_string;
 471
 472   // ---- alg
 473   if (!dict->GetString("alg", &value_string))
 474     return ::testing::AssertionFailure() << "Missing 'alg'";
 475   if (value_string != alg_expected)
 476     return ::testing::AssertionFailure() << "Expected 'alg' to be "
 477                                          << alg_expected << " but found "
 478                                          << value_string;
 479
 480   // ---- ext
 481   // always expect ext == true in this case
 482   bool ext_value;
 483   if (!dict->GetBoolean("ext", &ext_value))
 484     return ::testing::AssertionFailure() << "Missing 'ext'";
 485   if (!ext_value)
 486     return ::testing::AssertionFailure()
 487            << "Expected 'ext' to be true but found false";
 488
 489   // ---- key_ops
 490   base::ListValue* key_ops;
 491   if (!dict->GetList("key_ops", &key_ops))
 492     return ::testing::AssertionFailure() << "Missing 'key_ops'";
 493   blink::WebCryptoKeyUsageMask key_ops_mask = 0;
 494   Status status = GetWebCryptoUsagesFromJwkKeyOps(key_ops, &key_ops_mask);
 495   if (status.IsError())
 496     return ::testing::AssertionFailure() << "Failure extracting 'key_ops'";
 497   if (key_ops_mask != use_mask_expected)
 498     return ::testing::AssertionFailure()
 499            << "Expected 'key_ops' mask to be " << use_mask_expected
 500            << " but found " << key_ops_mask << " (" << value_string << ")";
 501
 502   return ::testing::AssertionSuccess();
 503 }
 504
 505 ::testing::AssertionResult VerifySecretJwk(
 506     const std::vector<uint8_t>& json,
 507     const std::string& alg_expected,
 508     const std::string& k_expected_hex,
 509     blink::WebCryptoKeyUsageMask use_mask_expected) {
 510   scoped_ptr<base::DictionaryValue> dict = GetJwkDictionary(json);
 511   if (!dict.get() || dict->empty())
 512     return ::testing::AssertionFailure() << "JSON parsing failed";
 513
 514   // ---- k
 515   std::string value_string;
 516   if (!dict->GetString("k", &value_string))
 517     return ::testing::AssertionFailure() << "Missing 'k'";
 518   std::string k_value;
 519   if (!Base64DecodeUrlSafe(value_string, &k_value))
 520     return ::testing::AssertionFailure() << "Base64DecodeUrlSafe(k) failed";
 521   if (!LowerCaseEqualsASCII(base::HexEncode(k_value.data(), k_value.size()),
 522                             k_expected_hex.c_str())) {
 523     return ::testing::AssertionFailure() << "Expected 'k' to be "
 524                                          << k_expected_hex
 525                                          << " but found something different";
 526   }
 527
 528   return VerifyJwk(dict, "oct", alg_expected, use_mask_expected);
 529 }
 530
 531 ::testing::AssertionResult VerifyPublicJwk(
 532     const std::vector<uint8_t>& json,
 533     const std::string& alg_expected,
 534     const std::string& n_expected_hex,
 535     const std::string& e_expected_hex,
 536     blink::WebCryptoKeyUsageMask use_mask_expected) {
 537   scoped_ptr<base::DictionaryValue> dict = GetJwkDictionary(json);
 538   if (!dict.get() || dict->empty())
 539     return ::testing::AssertionFailure() << "JSON parsing failed";
 540
 541   // ---- n
 542   std::string value_string;
 543   if (!dict->GetString("n", &value_string))
 544     return ::testing::AssertionFailure() << "Missing 'n'";
 545   std::string n_value;
 546   if (!Base64DecodeUrlSafe(value_string, &n_value))
 547     return ::testing::AssertionFailure() << "Base64DecodeUrlSafe(n) failed";
 548   if (base::HexEncode(n_value.data(), n_value.size()) != n_expected_hex) {
 549     return ::testing::AssertionFailure() << "'n' does not match the expected "
 550                                             "value";
 551   }
 552   // TODO(padolph): LowerCaseEqualsASCII() does not work for above!
 553
 554   // ---- e
 555   if (!dict->GetString("e", &value_string))
 556     return ::testing::AssertionFailure() << "Missing 'e'";
 557   std::string e_value;
 558   if (!Base64DecodeUrlSafe(value_string, &e_value))
 559     return ::testing::AssertionFailure() << "Base64DecodeUrlSafe(e) failed";
 560   if (!LowerCaseEqualsASCII(base::HexEncode(e_value.data(), e_value.size()),
 561                             e_expected_hex.c_str())) {
 562     return ::testing::AssertionFailure() << "Expected 'e' to be "
 563                                          << e_expected_hex
 564                                          << " but found something different";
 565   }
 566
 567   return VerifyJwk(dict, "RSA", alg_expected, use_mask_expected);
 568 }
 569
 570 void ImportExportJwkSymmetricKey(
 571     int key_len_bits,
 572     const blink::WebCryptoAlgorithm& import_algorithm,
 573     blink::WebCryptoKeyUsageMask usages,
 574     const std::string& jwk_alg) {
 575   std::vector<uint8_t> json;
 576   std::string key_hex;
 577
 578   // Hardcoded pseudo-random bytes to use for keys of different lengths.
 579   switch (key_len_bits) {
 580     case 128:
 581       key_hex = "3f1e7cd4f6f8543f6b1e16002e688623";
 582       break;
 583     case 256:
 584       key_hex =
 585           "bd08286b81a74783fd1ccf46b7e05af84ee25ae021210074159e0c4d9d907692";
 586       break;
 587     case 384:
 588       key_hex =
 589           "a22c5441c8b185602283d64c7221de1d0951e706bfc09539435ec0e0ed614e1d40"
 590           "6623f2b31d31819fec30993380dd82";
 591       break;
 592     case 512:
 593       key_hex =
 594           "5834f639000d4cf82de124fbfd26fb88d463e99f839a76ba41ac88967c80a3f61e"
 595           "1239a452e573dba0750e988152988576efd75b8d0229b7aca2ada2afd392ee";
 596       break;
 597     default:
 598       FAIL() << "Unexpected key_len_bits" << key_len_bits;
 599   }
 600
 601   // Import a raw key.
 602   blink::WebCryptoKey key = ImportSecretKeyFromRaw(
 603       HexStringToBytes(key_hex), import_algorithm, usages);
 604
 605   // Export the key in JWK format and validate.
 606   ASSERT_EQ(Status::Success(),
 607             ExportKey(blink::WebCryptoKeyFormatJwk, key, &json));
 608   EXPECT_TRUE(VerifySecretJwk(json, jwk_alg, key_hex, usages));
 609
 610   // Import the JWK-formatted key.
 611   ASSERT_EQ(Status::Success(),
 612             ImportKey(blink::WebCryptoKeyFormatJwk,
 613                       CryptoData(json),
 614                       import_algorithm,
 615                       true,
 616                       usages,
 617                       &key));
 618   EXPECT_TRUE(key.handle());
 619   EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
 620   EXPECT_EQ(import_algorithm.id(), key.algorithm().id());
 621   EXPECT_EQ(true, key.extractable());
 622   EXPECT_EQ(usages, key.usages());
 623
 624   // Export the key in raw format and compare to the original.
 625   std::vector<uint8_t> key_raw_out;
 626   ASSERT_EQ(Status::Success(),
 627             ExportKey(blink::WebCryptoKeyFormatRaw, key, &key_raw_out));
 628   EXPECT_BYTES_EQ_HEX(key_hex, key_raw_out);
 629 }
 630
 631 Status GenerateSecretKey(const blink::WebCryptoAlgorithm& algorithm,
 632                          bool extractable,
 633                          blink::WebCryptoKeyUsageMask usages,
 634                          blink::WebCryptoKey* key) {
 635   GenerateKeyResult result;
 636   Status status = GenerateKey(algorithm, extractable, usages, &result);
 637   if (status.IsError())
 638     return status;
 639
 640   if (result.type() != GenerateKeyResult::TYPE_SECRET_KEY)
 641     return Status::ErrorUnexpected();
 642
 643   *key = result.secret_key();
 644
 645   return Status::Success();
 646 }
 647
 648 Status GenerateKeyPair(const blink::WebCryptoAlgorithm& algorithm,
 649                        bool extractable,
 650                        blink::WebCryptoKeyUsageMask usages,
 651                        blink::WebCryptoKey* public_key,
 652                        blink::WebCryptoKey* private_key) {
 653   GenerateKeyResult result;
 654   Status status = GenerateKey(algorithm, extractable, usages, &result);
 655   if (status.IsError())
 656     return status;
 657
 658   if (result.type() != GenerateKeyResult::TYPE_PUBLIC_PRIVATE_KEY_PAIR)
 659     return Status::ErrorUnexpected();
 660
 661   *public_key = result.public_key();
 662   *private_key = result.private_key();
 663
 664   return Status::Success();
 665 }
 666
 667 blink::WebCryptoKeyFormat GetKeyFormatFromJsonTestCase(
 668     const base::DictionaryValue* test) {
 669   std::string format;
 670   EXPECT_TRUE(test->GetString("key_format", &format));
 671   if (format == "jwk")
 672     return blink::WebCryptoKeyFormatJwk;
 673   else if (format == "pkcs8")
 674     return blink::WebCryptoKeyFormatPkcs8;
 675   else if (format == "spki")
 676     return blink::WebCryptoKeyFormatSpki;
 677
 678   EXPECT_TRUE(false) << "Unrecognized key format: " << format;
 679   return blink::WebCryptoKeyFormatRaw;
 680 }
 681
 682 std::vector<uint8_t> GetKeyDataFromJsonTestCase(
 683     const base::DictionaryValue* test,
 684     blink::WebCryptoKeyFormat key_format) {
 685   if (key_format == blink::WebCryptoKeyFormatJwk) {
 686     const base::DictionaryValue* json;
 687     EXPECT_TRUE(test->GetDictionary("key", &json));
 688     return MakeJsonVector(*json);
 689   }
 690   return GetBytesFromHexString(test, "key");
 691 }
 692
 693 }  // namespace webcrypto
 694
 695 }  // namesapce content