// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <algorithm>
#include <string>
#include <vector>

#include "base/basictypes.h"
#include "base/file_util.h"
#include "base/json/json_reader.h"
#include "base/json/json_writer.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/path_service.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "content/child/webcrypto/algorithm_dispatch.h"
#include "content/child/webcrypto/crypto_data.h"
#include "content/child/webcrypto/status.h"
#include "content/child/webcrypto/webcrypto_util.h"
#include "content/public/common/content_paths.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
#include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
#include "third_party/WebKit/public/platform/WebCryptoKey.h"
#include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
#include "third_party/re2/re2/re2.h"

#if !defined(USE_OPENSSL)
#include <nss.h>
#include <pk11pub.h>

#include "crypto/nss_util.h"
#include "crypto/scoped_nss_types.h"
#endif

#define EXPECT_BYTES_EQ(expected, actual) \
  EXPECT_EQ(CryptoData(expected), CryptoData(actual))

#define EXPECT_BYTES_EQ_HEX(expected_hex, actual_bytes) \
  EXPECT_BYTES_EQ(HexStringToBytes(expected_hex), actual_bytes)

namespace content {

namespace webcrypto {

// These functions are used by GTEST to support EXPECT_EQ() for
// webcrypto::Status and webcrypto::CryptoData

void PrintTo(const Status& status, ::std::ostream* os) {
  if (status.IsSuccess())
    *os << "Success";
  else
    *os << "Error type: " << status.error_type()
        << " Error details: " << status.error_details();
}

bool operator==(const content::webcrypto::Status& a,
                const content::webcrypto::Status& b) {
  if (a.IsSuccess() != b.IsSuccess())
    return false;
  if (a.IsSuccess())
    return true;
  return a.error_type() == b.error_type() &&
         a.error_details() == b.error_details();
}

bool operator!=(const content::webcrypto::Status& a,
                const content::webcrypto::Status& b) {
  return !(a == b);
}

void PrintTo(const CryptoData& data, ::std::ostream* os) {
  *os << "[" << base::HexEncode(data.bytes(), data.byte_length()) << "]";
}

bool operator==(const content::webcrypto::CryptoData& a,
                const content::webcrypto::CryptoData& b) {
  return a.byte_length() == b.byte_length() &&
         memcmp(a.bytes(), b.bytes(), a.byte_length()) == 0;
}

bool operator!=(const content::webcrypto::CryptoData& a,
                const content::webcrypto::CryptoData& b) {
  return !(a == b);
}

namespace {

// -----------------------------------------------------------------------------

// TODO(eroman): For Linux builds using system NSS, AES-GCM support is a
// runtime dependency. Test it by trying to import a key.
// TODO(padolph): Consider caching the result of the import key test.
bool SupportsAesGcm() {
  std::vector<uint8_t> key_raw(16, 0);

  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  Status status = ImportKey(blink::WebCryptoKeyFormatRaw,
                            CryptoData(key_raw),
                            CreateAlgorithm(blink::WebCryptoAlgorithmIdAesGcm),
                            true,
                            blink::WebCryptoKeyUsageEncrypt,
                            &key);

  if (status.IsError())
    EXPECT_EQ(blink::WebCryptoErrorTypeNotSupported, status.error_type());
  return status.IsSuccess();
}

bool SupportsRsaOaep() {
#if defined(USE_OPENSSL)
  return true;
#else
  crypto::EnsureNSSInit();
  // TODO(eroman): Exclude version test for OS_CHROMEOS
#if defined(USE_NSS)
  if (!NSS_VersionCheck("3.16.2"))
    return false;
#endif
  crypto::ScopedPK11Slot slot(PK11_GetInternalKeySlot());
  return !!PK11_DoesMechanism(slot.get(), CKM_RSA_PKCS_OAEP);
#endif
}

bool SupportsRsaKeyImport() {
// TODO(eroman): Exclude version test for OS_CHROMEOS
#if defined(USE_NSS)
  crypto::EnsureNSSInit();
  if (!NSS_VersionCheck("3.16.2")) {
    LOG(WARNING) << "RSA key import is not supported by this version of NSS. "
                    "Skipping some tests";
    return false;
  }
#endif
  return true;
}

blink::WebCryptoAlgorithm CreateRsaHashedKeyGenAlgorithm(
    blink::WebCryptoAlgorithmId algorithm_id,
    const blink::WebCryptoAlgorithmId hash_id,
    unsigned int modulus_length,
    const std::vector<uint8_t>& public_exponent) {
  DCHECK(algorithm_id == blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5 ||
         algorithm_id == blink::WebCryptoAlgorithmIdRsaOaep);
  DCHECK(blink::WebCryptoAlgorithm::isHash(hash_id));
  return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
      algorithm_id,
      new blink::WebCryptoRsaHashedKeyGenParams(
          CreateAlgorithm(hash_id),
          modulus_length,
          vector_as_array(&public_exponent),
          public_exponent.size()));
}

// Creates an RSA-OAEP algorithm
blink::WebCryptoAlgorithm CreateRsaOaepAlgorithm(
    const std::vector<uint8_t>& label) {
  return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
      blink::WebCryptoAlgorithmIdRsaOaep,
      new blink::WebCryptoRsaOaepParams(
          !label.empty(), vector_as_array(&label), label.size()));
}

// Creates an AES-CBC algorithm.
blink::WebCryptoAlgorithm CreateAesCbcAlgorithm(
    const std::vector<uint8_t>& iv) {
  return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
      blink::WebCryptoAlgorithmIdAesCbc,
      new blink::WebCryptoAesCbcParams(vector_as_array(&iv), iv.size()));
}

// Creates an AES-GCM algorithm.
blink::WebCryptoAlgorithm CreateAesGcmAlgorithm(
    const std::vector<uint8_t>& iv,
    const std::vector<uint8_t>& additional_data,
    unsigned int tag_length_bits) {
  EXPECT_TRUE(SupportsAesGcm());
  return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
      blink::WebCryptoAlgorithmIdAesGcm,
      new blink::WebCryptoAesGcmParams(vector_as_array(&iv),
                                       iv.size(),
                                       true,
                                       vector_as_array(&additional_data),
                                       additional_data.size(),
                                       true,
                                       tag_length_bits));
}

// Creates an HMAC algorithm whose parameters struct is compatible with key
// generation. It is an error to call this with a hash_id that is not a SHA*.
// The key_length_bits parameter is optional, with zero meaning unspecified.
blink::WebCryptoAlgorithm CreateHmacKeyGenAlgorithm(
    blink::WebCryptoAlgorithmId hash_id,
    unsigned int key_length_bits) {
  DCHECK(blink::WebCryptoAlgorithm::isHash(hash_id));
  // key_length_bytes == 0 means unspecified
  return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
      blink::WebCryptoAlgorithmIdHmac,
      new blink::WebCryptoHmacKeyGenParams(
          CreateAlgorithm(hash_id), (key_length_bits != 0), key_length_bits));
}

// Returns a slightly modified version of the input vector.
//
//  - For non-empty inputs a single bit is inverted.
//  - For empty inputs, a byte is added.
std::vector<uint8_t> Corrupted(const std::vector<uint8_t>& input) {
  std::vector<uint8_t> corrupted_data(input);
  if (corrupted_data.empty())
    corrupted_data.push_back(0);
  corrupted_data[corrupted_data.size() / 2] ^= 0x01;
  return corrupted_data;
}

std::vector<uint8_t> HexStringToBytes(const std::string& hex) {
  std::vector<uint8_t> bytes;
  base::HexStringToBytes(hex, &bytes);
  return bytes;
}

std::vector<uint8_t> MakeJsonVector(const std::string& json_string) {
  return std::vector<uint8_t>(json_string.begin(), json_string.end());
}

std::vector<uint8_t> MakeJsonVector(const base::DictionaryValue& dict) {
  std::string json;
  base::JSONWriter::Write(&dict, &json);
  return MakeJsonVector(json);
}

// ----------------------------------------------------------------
// Helpers for working with JSON data files for test expectations.
// ----------------------------------------------------------------

// Reads a file in "src/content/test/data/webcrypto" to a base::Value.
// The file must be JSON, however it can also include C++ style comments.
::testing::AssertionResult ReadJsonTestFile(const char* test_file_name,
                                            scoped_ptr<base::Value>* value) {
  base::FilePath test_data_dir;
  if (!PathService::Get(DIR_TEST_DATA, &test_data_dir))
    return ::testing::AssertionFailure() << "Couldn't retrieve test dir";

  base::FilePath file_path =
      test_data_dir.AppendASCII("webcrypto").AppendASCII(test_file_name);

  std::string file_contents;
  if (!base::ReadFileToString(file_path, &file_contents)) {
    return ::testing::AssertionFailure()
           << "Couldn't read test file: " << file_path.value();
  }

  // Strip C++ style comments out of the "json" file, otherwise it cannot be
  // parsed.
  re2::RE2::GlobalReplace(&file_contents, re2::RE2("\\s*//.*"), "");

  // Parse the JSON to a dictionary.
  value->reset(base::JSONReader::Read(file_contents));
  if (!value->get()) {
    return ::testing::AssertionFailure()
           << "Couldn't parse test file JSON: " << file_path.value();
  }

  return ::testing::AssertionSuccess();
}

// Same as ReadJsonTestFile(), but return the value as a List.
::testing::AssertionResult ReadJsonTestFileToList(
    const char* test_file_name,
    scoped_ptr<base::ListValue>* list) {
  // Read the JSON.
  scoped_ptr<base::Value> json;
  ::testing::AssertionResult result = ReadJsonTestFile(test_file_name, &json);
  if (!result)
    return result;

  // Cast to an ListValue.
  base::ListValue* list_value = NULL;
  if (!json->GetAsList(&list_value) || !list_value)
    return ::testing::AssertionFailure() << "The JSON was not a list";

  list->reset(list_value);
  ignore_result(json.release());

  return ::testing::AssertionSuccess();
}

// Read a string property from the dictionary with path |property_name|
// (which can include periods for nested dictionaries). Interprets the
// string as a hex encoded string and converts it to a bytes list.
//
// Returns empty vector on failure.
std::vector<uint8_t> GetBytesFromHexString(base::DictionaryValue* dict,
                                           const char* property_name) {
  std::string hex_string;
  if (!dict->GetString(property_name, &hex_string)) {
    EXPECT_TRUE(false) << "Couldn't get string property: " << property_name;
    return std::vector<uint8_t>();
  }

  return HexStringToBytes(hex_string);
}

// Reads a string property with path "property_name" and converts it to a
// WebCryptoAlgorith. Returns null algorithm on failure.
blink::WebCryptoAlgorithm GetDigestAlgorithm(base::DictionaryValue* dict,
                                             const char* property_name) {
  std::string algorithm_name;
  if (!dict->GetString(property_name, &algorithm_name)) {
    EXPECT_TRUE(false) << "Couldn't get string property: " << property_name;
    return blink::WebCryptoAlgorithm::createNull();
  }

  struct {
    const char* name;
    blink::WebCryptoAlgorithmId id;
  } kDigestNameToId[] = {
        {"sha-1", blink::WebCryptoAlgorithmIdSha1},
        {"sha-256", blink::WebCryptoAlgorithmIdSha256},
        {"sha-384", blink::WebCryptoAlgorithmIdSha384},
        {"sha-512", blink::WebCryptoAlgorithmIdSha512},
    };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kDigestNameToId); ++i) {
    if (kDigestNameToId[i].name == algorithm_name)
      return CreateAlgorithm(kDigestNameToId[i].id);
  }

  return blink::WebCryptoAlgorithm::createNull();
}

// Helper for ImportJwkFailures and ImportJwkOctFailures. Restores the JWK JSON
// dictionary to a good state
void RestoreJwkOctDictionary(base::DictionaryValue* dict) {
  dict->Clear();
  dict->SetString("kty", "oct");
  dict->SetString("alg", "A128CBC");
  dict->SetString("use", "enc");
  dict->SetBoolean("ext", false);
  dict->SetString("k", "GADWrMRHwQfoNaXU5fZvTg==");
}

// Helper for ImportJwkRsaFailures. Restores the JWK JSON
// dictionary to a good state
void RestoreJwkRsaDictionary(base::DictionaryValue* dict) {
  dict->Clear();
  dict->SetString("kty", "RSA");
  dict->SetString("alg", "RS256");
  dict->SetString("use", "sig");
  dict->SetBoolean("ext", false);
  dict->SetString(
      "n",
      "qLOyhK-OtQs4cDSoYPFGxJGfMYdjzWxVmMiuSBGh4KvEx-CwgtaTpef87Wdc9GaFEncsDLxk"
      "p0LGxjD1M8jMcvYq6DPEC_JYQumEu3i9v5fAEH1VvbZi9cTg-rmEXLUUjvc5LdOq_5OuHmtm"
      "e7PUJHYW1PW6ENTP0ibeiNOfFvs");
  dict->SetString("e", "AQAB");
}

// Returns true if any of the vectors in the input list have identical content.
// Dumb O(n^2) implementation but should be fast enough for the input sizes that
// are used.
bool CopiesExist(const std::vector<std::vector<uint8_t> >& bufs) {
  for (size_t i = 0; i < bufs.size(); ++i) {
    for (size_t j = i + 1; j < bufs.size(); ++j) {
      if (CryptoData(bufs[i]) == CryptoData(bufs[j]))
        return true;
    }
  }
  return false;
}

blink::WebCryptoAlgorithm CreateAesKeyGenAlgorithm(
    blink::WebCryptoAlgorithmId aes_alg_id,
    unsigned short length) {
  return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
      aes_alg_id, new blink::WebCryptoAesKeyGenParams(length));
}

blink::WebCryptoAlgorithm CreateAesCbcKeyGenAlgorithm(
    unsigned short key_length_bits) {
  return CreateAesKeyGenAlgorithm(blink::WebCryptoAlgorithmIdAesCbc,
                                  key_length_bits);
}

blink::WebCryptoAlgorithm CreateAesGcmKeyGenAlgorithm(
    unsigned short key_length_bits) {
  EXPECT_TRUE(SupportsAesGcm());
  return CreateAesKeyGenAlgorithm(blink::WebCryptoAlgorithmIdAesGcm,
                                  key_length_bits);
}

blink::WebCryptoAlgorithm CreateAesKwKeyGenAlgorithm(
    unsigned short key_length_bits) {
  return CreateAesKeyGenAlgorithm(blink::WebCryptoAlgorithmIdAesKw,
                                  key_length_bits);
}

// The following key pair is comprised of the SPKI (public key) and PKCS#8
// (private key) representations of the key pair provided in Example 1 of the
// NIST test vectors at
// ftp://ftp.rsa.com/pub/rsalabs/tmp/pkcs1v15sign-vectors.txt
const unsigned int kModulusLengthBits = 1024;
const char* const kPublicKeySpkiDerHex =
    "30819f300d06092a864886f70d010101050003818d0030818902818100a5"
    "6e4a0e701017589a5187dc7ea841d156f2ec0e36ad52a44dfeb1e61f7ad9"
    "91d8c51056ffedb162b4c0f283a12a88a394dff526ab7291cbb307ceabfc"
    "e0b1dfd5cd9508096d5b2b8b6df5d671ef6377c0921cb23c270a70e2598e"
    "6ff89d19f105acc2d3f0cb35f29280e1386b6f64c4ef22e1e1f20d0ce8cf"
    "fb2249bd9a21370203010001";
const char* const kPrivateKeyPkcs8DerHex =
    "30820275020100300d06092a864886f70d01010105000482025f3082025b"
    "02010002818100a56e4a0e701017589a5187dc7ea841d156f2ec0e36ad52"
    "a44dfeb1e61f7ad991d8c51056ffedb162b4c0f283a12a88a394dff526ab"
    "7291cbb307ceabfce0b1dfd5cd9508096d5b2b8b6df5d671ef6377c0921c"
    "b23c270a70e2598e6ff89d19f105acc2d3f0cb35f29280e1386b6f64c4ef"
    "22e1e1f20d0ce8cffb2249bd9a2137020301000102818033a5042a90b27d"
    "4f5451ca9bbbd0b44771a101af884340aef9885f2a4bbe92e894a724ac3c"
    "568c8f97853ad07c0266c8c6a3ca0929f1e8f11231884429fc4d9ae55fee"
    "896a10ce707c3ed7e734e44727a39574501a532683109c2abacaba283c31"
    "b4bd2f53c3ee37e352cee34f9e503bd80c0622ad79c6dcee883547c6a3b3"
    "25024100e7e8942720a877517273a356053ea2a1bc0c94aa72d55c6e8629"
    "6b2dfc967948c0a72cbccca7eacb35706e09a1df55a1535bd9b3cc34160b"
    "3b6dcd3eda8e6443024100b69dca1cf7d4d7ec81e75b90fcca874abcde12"
    "3fd2700180aa90479b6e48de8d67ed24f9f19d85ba275874f542cd20dc72"
    "3e6963364a1f9425452b269a6799fd024028fa13938655be1f8a159cbaca"
    "5a72ea190c30089e19cd274a556f36c4f6e19f554b34c077790427bbdd8d"
    "d3ede2448328f385d81b30e8e43b2fffa02786197902401a8b38f398fa71"
    "2049898d7fb79ee0a77668791299cdfa09efc0e507acb21ed74301ef5bfd"
    "48be455eaeb6e1678255827580a8e4e8e14151d1510a82a3f2e729024027"
    "156aba4126d24a81f3a528cbfb27f56886f840a9f6e86e17a44b94fe9319"
    "584b8e22fdde1e5a2e3bd8aa5ba8d8584194eb2190acf832b847f13a3d24"
    "a79f4d";
// The modulus and exponent (in hex) of kPublicKeySpkiDerHex
const char* const kPublicKeyModulusHex =
    "A56E4A0E701017589A5187DC7EA841D156F2EC0E36AD52A44DFEB1E61F7AD991D8C51056"
    "FFEDB162B4C0F283A12A88A394DFF526AB7291CBB307CEABFCE0B1DFD5CD9508096D5B2B"
    "8B6DF5D671EF6377C0921CB23C270A70E2598E6FF89D19F105ACC2D3F0CB35F29280E138"
    "6B6F64C4EF22E1E1F20D0CE8CFFB2249BD9A2137";
const char* const kPublicKeyExponentHex = "010001";

// TODO(eroman): Remove unnecessary test fixture.
class SharedCryptoTest : public testing::Test {
};

blink::WebCryptoKey ImportSecretKeyFromRaw(
    const std::vector<uint8_t>& key_raw,
    const blink::WebCryptoAlgorithm& algorithm,
    blink::WebCryptoKeyUsageMask usage) {
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  bool extractable = true;
  EXPECT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(key_raw),
                      algorithm,
                      extractable,
                      usage,
                      &key));

  EXPECT_FALSE(key.isNull());
  EXPECT_TRUE(key.handle());
  EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
  EXPECT_EQ(algorithm.id(), key.algorithm().id());
  EXPECT_EQ(extractable, key.extractable());
  EXPECT_EQ(usage, key.usages());
  return key;
}

void ImportRsaKeyPair(const std::vector<uint8_t>& spki_der,
                      const std::vector<uint8_t>& pkcs8_der,
                      const blink::WebCryptoAlgorithm& algorithm,
                      bool extractable,
                      blink::WebCryptoKeyUsageMask public_key_usage_mask,
                      blink::WebCryptoKeyUsageMask private_key_usage_mask,
                      blink::WebCryptoKey* public_key,
                      blink::WebCryptoKey* private_key) {
  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatSpki,
                      CryptoData(spki_der),
                      algorithm,
                      true,
                      public_key_usage_mask,
                      public_key));
  EXPECT_FALSE(public_key->isNull());
  EXPECT_TRUE(public_key->handle());
  EXPECT_EQ(blink::WebCryptoKeyTypePublic, public_key->type());
  EXPECT_EQ(algorithm.id(), public_key->algorithm().id());
  EXPECT_TRUE(public_key->extractable());
  EXPECT_EQ(public_key_usage_mask, public_key->usages());

  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatPkcs8,
                      CryptoData(pkcs8_der),
                      algorithm,
                      extractable,
                      private_key_usage_mask,
                      private_key));
  EXPECT_FALSE(private_key->isNull());
  EXPECT_TRUE(private_key->handle());
  EXPECT_EQ(blink::WebCryptoKeyTypePrivate, private_key->type());
  EXPECT_EQ(algorithm.id(), private_key->algorithm().id());
  EXPECT_EQ(extractable, private_key->extractable());
  EXPECT_EQ(private_key_usage_mask, private_key->usages());
}

Status AesGcmEncrypt(const blink::WebCryptoKey& key,
                     const std::vector<uint8_t>& iv,
                     const std::vector<uint8_t>& additional_data,
                     unsigned int tag_length_bits,
                     const std::vector<uint8_t>& plain_text,
                     std::vector<uint8_t>* cipher_text,
                     std::vector<uint8_t>* authentication_tag) {
  EXPECT_TRUE(SupportsAesGcm());
  blink::WebCryptoAlgorithm algorithm =
      CreateAesGcmAlgorithm(iv, additional_data, tag_length_bits);

  std::vector<uint8_t> output;
  Status status = Encrypt(algorithm, key, CryptoData(plain_text), &output);
  if (status.IsError())
    return status;

  if ((tag_length_bits % 8) != 0) {
    EXPECT_TRUE(false) << "Encrypt should have failed.";
    return Status::OperationError();
  }

  size_t tag_length_bytes = tag_length_bits / 8;

  if (tag_length_bytes > output.size()) {
    EXPECT_TRUE(false) << "tag length is larger than output";
    return Status::OperationError();
  }

  // The encryption result is cipher text with authentication tag appended.
  cipher_text->assign(output.begin(),
                      output.begin() + (output.size() - tag_length_bytes));
  authentication_tag->assign(output.begin() + cipher_text->size(),
                             output.end());

  return Status::Success();
}

Status AesGcmDecrypt(const blink::WebCryptoKey& key,
                     const std::vector<uint8_t>& iv,
                     const std::vector<uint8_t>& additional_data,
                     unsigned int tag_length_bits,
                     const std::vector<uint8_t>& cipher_text,
                     const std::vector<uint8_t>& authentication_tag,
                     std::vector<uint8_t>* plain_text) {
  EXPECT_TRUE(SupportsAesGcm());
  blink::WebCryptoAlgorithm algorithm =
      CreateAesGcmAlgorithm(iv, additional_data, tag_length_bits);

  // Join cipher text and authentication tag.
  std::vector<uint8_t> cipher_text_with_tag;
  cipher_text_with_tag.reserve(cipher_text.size() + authentication_tag.size());
  cipher_text_with_tag.insert(
      cipher_text_with_tag.end(), cipher_text.begin(), cipher_text.end());
  cipher_text_with_tag.insert(cipher_text_with_tag.end(),
                              authentication_tag.begin(),
                              authentication_tag.end());

  return Decrypt(algorithm, key, CryptoData(cipher_text_with_tag), plain_text);
}

Status ImportKeyJwk(const CryptoData& key_data,
                    const blink::WebCryptoAlgorithm& algorithm,
                    bool extractable,
                    blink::WebCryptoKeyUsageMask usage_mask,
                    blink::WebCryptoKey* key) {
  return ImportKey(blink::WebCryptoKeyFormatJwk,
                   key_data,
                   algorithm,
                   extractable,
                   usage_mask,
                   key);
}

Status ImportKeyJwkFromDict(const base::DictionaryValue& dict,
                            const blink::WebCryptoAlgorithm& algorithm,
                            bool extractable,
                            blink::WebCryptoKeyUsageMask usage_mask,
                            blink::WebCryptoKey* key) {
  return ImportKeyJwk(CryptoData(MakeJsonVector(dict)),
                      algorithm,
                      extractable,
                      usage_mask,
                      key);
}

// Parses a vector of JSON into a dictionary.
scoped_ptr<base::DictionaryValue> GetJwkDictionary(
    const std::vector<uint8_t>& json) {
  base::StringPiece json_string(
      reinterpret_cast<const char*>(vector_as_array(&json)), json.size());
  base::Value* value = base::JSONReader::Read(json_string);
  EXPECT_TRUE(value);
  base::DictionaryValue* dict_value = NULL;
  value->GetAsDictionary(&dict_value);
  return scoped_ptr<base::DictionaryValue>(dict_value);
}

// Verifies the input dictionary contains the expected values. Exact matches are
// required on the fields examined.
::testing::AssertionResult VerifyJwk(
    const scoped_ptr<base::DictionaryValue>& dict,
    const std::string& kty_expected,
    const std::string& alg_expected,
    blink::WebCryptoKeyUsageMask use_mask_expected) {
  // ---- kty
  std::string value_string;
  if (!dict->GetString("kty", &value_string))
    return ::testing::AssertionFailure() << "Missing 'kty'";
  if (value_string != kty_expected)
    return ::testing::AssertionFailure() << "Expected 'kty' to be "
                                         << kty_expected << "but found "
                                         << value_string;

  // ---- alg
  if (!dict->GetString("alg", &value_string))
    return ::testing::AssertionFailure() << "Missing 'alg'";
  if (value_string != alg_expected)
    return ::testing::AssertionFailure() << "Expected 'alg' to be "
                                         << alg_expected << " but found "
                                         << value_string;

  // ---- ext
  // always expect ext == true in this case
  bool ext_value;
  if (!dict->GetBoolean("ext", &ext_value))
    return ::testing::AssertionFailure() << "Missing 'ext'";
  if (!ext_value)
    return ::testing::AssertionFailure()
           << "Expected 'ext' to be true but found false";

  // ---- key_ops
  base::ListValue* key_ops;
  if (!dict->GetList("key_ops", &key_ops))
    return ::testing::AssertionFailure() << "Missing 'key_ops'";
  blink::WebCryptoKeyUsageMask key_ops_mask = 0;
  Status status = GetWebCryptoUsagesFromJwkKeyOps(key_ops, &key_ops_mask);
  if (status.IsError())
    return ::testing::AssertionFailure() << "Failure extracting 'key_ops'";
  if (key_ops_mask != use_mask_expected)
    return ::testing::AssertionFailure()
           << "Expected 'key_ops' mask to be " << use_mask_expected
           << " but found " << key_ops_mask << " (" << value_string << ")";

  return ::testing::AssertionSuccess();
}

// Verifies that the JSON in the input vector contains the provided
// expected values. Exact matches are required on the fields examined.
::testing::AssertionResult VerifySecretJwk(
    const std::vector<uint8_t>& json,
    const std::string& alg_expected,
    const std::string& k_expected_hex,
    blink::WebCryptoKeyUsageMask use_mask_expected) {
  scoped_ptr<base::DictionaryValue> dict = GetJwkDictionary(json);
  if (!dict.get() || dict->empty())
    return ::testing::AssertionFailure() << "JSON parsing failed";

  // ---- k
  std::string value_string;
  if (!dict->GetString("k", &value_string))
    return ::testing::AssertionFailure() << "Missing 'k'";
  std::string k_value;
  if (!webcrypto::Base64DecodeUrlSafe(value_string, &k_value))
    return ::testing::AssertionFailure() << "Base64DecodeUrlSafe(k) failed";
  if (!LowerCaseEqualsASCII(base::HexEncode(k_value.data(), k_value.size()),
                            k_expected_hex.c_str())) {
    return ::testing::AssertionFailure() << "Expected 'k' to be "
                                         << k_expected_hex
                                         << " but found something different";
  }

  return VerifyJwk(dict, "oct", alg_expected, use_mask_expected);
}

// Verifies that the JSON in the input vector contains the provided
// expected values. Exact matches are required on the fields examined.
::testing::AssertionResult VerifyPublicJwk(
    const std::vector<uint8_t>& json,
    const std::string& alg_expected,
    const std::string& n_expected_hex,
    const std::string& e_expected_hex,
    blink::WebCryptoKeyUsageMask use_mask_expected) {
  scoped_ptr<base::DictionaryValue> dict = GetJwkDictionary(json);
  if (!dict.get() || dict->empty())
    return ::testing::AssertionFailure() << "JSON parsing failed";

  // ---- n
  std::string value_string;
  if (!dict->GetString("n", &value_string))
    return ::testing::AssertionFailure() << "Missing 'n'";
  std::string n_value;
  if (!webcrypto::Base64DecodeUrlSafe(value_string, &n_value))
    return ::testing::AssertionFailure() << "Base64DecodeUrlSafe(n) failed";
  if (base::HexEncode(n_value.data(), n_value.size()) != n_expected_hex) {
    return ::testing::AssertionFailure() << "'n' does not match the expected "
                                            "value";
  }
  // TODO(padolph): LowerCaseEqualsASCII() does not work for above!

  // ---- e
  if (!dict->GetString("e", &value_string))
    return ::testing::AssertionFailure() << "Missing 'e'";
  std::string e_value;
  if (!webcrypto::Base64DecodeUrlSafe(value_string, &e_value))
    return ::testing::AssertionFailure() << "Base64DecodeUrlSafe(e) failed";
  if (!LowerCaseEqualsASCII(base::HexEncode(e_value.data(), e_value.size()),
                            e_expected_hex.c_str())) {
    return ::testing::AssertionFailure() << "Expected 'e' to be "
                                         << e_expected_hex
                                         << " but found something different";
  }

  return VerifyJwk(dict, "RSA", alg_expected, use_mask_expected);
}

}  // namespace

TEST_F(SharedCryptoTest, CheckAesGcm) {
  if (!SupportsAesGcm()) {
    LOG(WARNING) << "AES GCM not supported on this platform, so some tests "
                    "will be skipped. Consider upgrading local NSS libraries";
    return;
  }
}

// Tests several Status objects against their expected hard coded values, as
// well as ensuring that comparison of Status objects works.
// Comparison should take into account both the error details, as well as the
// error type.
TEST_F(SharedCryptoTest, Status) {
  // Even though the error message is the same, these should not be considered
  // the same by the tests because the error type is different.
  EXPECT_NE(Status::DataError(), Status::OperationError());
  EXPECT_NE(Status::Success(), Status::OperationError());

  EXPECT_EQ(Status::Success(), Status::Success());
  EXPECT_EQ(Status::ErrorJwkPropertyWrongType("kty", "string"),
            Status::ErrorJwkPropertyWrongType("kty", "string"));

  Status status = Status::Success();

  EXPECT_FALSE(status.IsError());
  EXPECT_EQ("", status.error_details());

  status = Status::OperationError();
  EXPECT_TRUE(status.IsError());
  EXPECT_EQ("", status.error_details());
  EXPECT_EQ(blink::WebCryptoErrorTypeOperation, status.error_type());

  status = Status::DataError();
  EXPECT_TRUE(status.IsError());
  EXPECT_EQ("", status.error_details());
  EXPECT_EQ(blink::WebCryptoErrorTypeData, status.error_type());

  status = Status::ErrorUnsupported();
  EXPECT_TRUE(status.IsError());
  EXPECT_EQ("The requested operation is unsupported", status.error_details());
  EXPECT_EQ(blink::WebCryptoErrorTypeNotSupported, status.error_type());

  status = Status::ErrorJwkPropertyMissing("kty");
  EXPECT_TRUE(status.IsError());
  EXPECT_EQ("The required JWK property \"kty\" was missing",
            status.error_details());
  EXPECT_EQ(blink::WebCryptoErrorTypeData, status.error_type());

  status = Status::ErrorJwkPropertyWrongType("kty", "string");
  EXPECT_TRUE(status.IsError());
  EXPECT_EQ("The JWK property \"kty\" must be a string",
            status.error_details());
  EXPECT_EQ(blink::WebCryptoErrorTypeData, status.error_type());

  status = Status::ErrorJwkBase64Decode("n");
  EXPECT_TRUE(status.IsError());
  EXPECT_EQ("The JWK property \"n\" could not be base64 decoded",
            status.error_details());
  EXPECT_EQ(blink::WebCryptoErrorTypeData, status.error_type());
}

TEST_F(SharedCryptoTest, DigestSampleSets) {
  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("digest.json", &tests));

  for (size_t test_index = 0; test_index < tests->GetSize(); ++test_index) {
    SCOPED_TRACE(test_index);
    base::DictionaryValue* test;
    ASSERT_TRUE(tests->GetDictionary(test_index, &test));

    blink::WebCryptoAlgorithm test_algorithm =
        GetDigestAlgorithm(test, "algorithm");
    std::vector<uint8_t> test_input = GetBytesFromHexString(test, "input");
    std::vector<uint8_t> test_output = GetBytesFromHexString(test, "output");

    std::vector<uint8_t> output;
    ASSERT_EQ(Status::Success(),
              Digest(test_algorithm, CryptoData(test_input), &output));
    EXPECT_BYTES_EQ(test_output, output);
  }
}

TEST_F(SharedCryptoTest, DigestSampleSetsInChunks) {
  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("digest.json", &tests));

  for (size_t test_index = 0; test_index < tests->GetSize(); ++test_index) {
    SCOPED_TRACE(test_index);
    base::DictionaryValue* test;
    ASSERT_TRUE(tests->GetDictionary(test_index, &test));

    blink::WebCryptoAlgorithm test_algorithm =
        GetDigestAlgorithm(test, "algorithm");
    std::vector<uint8_t> test_input = GetBytesFromHexString(test, "input");
    std::vector<uint8_t> test_output = GetBytesFromHexString(test, "output");

    // Test the chunk version of the digest functions. Test with 129 byte chunks
    // because the SHA-512 chunk size is 128 bytes.
    unsigned char* output;
    unsigned int output_length;
    static const size_t kChunkSizeBytes = 129;
    size_t length = test_input.size();
    scoped_ptr<blink::WebCryptoDigestor> digestor(
        CreateDigestor(test_algorithm.id()));
    std::vector<uint8_t>::iterator begin = test_input.begin();
    size_t chunk_index = 0;
    while (begin != test_input.end()) {
      size_t chunk_length = std::min(kChunkSizeBytes, length - chunk_index);
      std::vector<uint8_t> chunk(begin, begin + chunk_length);
      ASSERT_TRUE(chunk.size() > 0);
      EXPECT_TRUE(digestor->consume(&chunk.front(), chunk.size()));
      chunk_index = chunk_index + chunk_length;
      begin = begin + chunk_length;
    }
    EXPECT_TRUE(digestor->finish(output, output_length));
    EXPECT_BYTES_EQ(test_output, CryptoData(output, output_length));
  }
}

TEST_F(SharedCryptoTest, HMACSampleSets) {
  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("hmac.json", &tests));
  // TODO(padolph): Missing known answer tests for HMAC SHA384, and SHA512.
  for (size_t test_index = 0; test_index < tests->GetSize(); ++test_index) {
    SCOPED_TRACE(test_index);
    base::DictionaryValue* test;
    ASSERT_TRUE(tests->GetDictionary(test_index, &test));

    blink::WebCryptoAlgorithm test_hash = GetDigestAlgorithm(test, "hash");
    const std::vector<uint8_t> test_key = GetBytesFromHexString(test, "key");
    const std::vector<uint8_t> test_message =
        GetBytesFromHexString(test, "message");
    const std::vector<uint8_t> test_mac = GetBytesFromHexString(test, "mac");

    blink::WebCryptoAlgorithm algorithm =
        CreateAlgorithm(blink::WebCryptoAlgorithmIdHmac);

    blink::WebCryptoAlgorithm import_algorithm =
        CreateHmacImportAlgorithm(test_hash.id());

    blink::WebCryptoKey key = ImportSecretKeyFromRaw(
        test_key,
        import_algorithm,
        blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify);

    EXPECT_EQ(test_hash.id(), key.algorithm().hmacParams()->hash().id());
    EXPECT_EQ(test_key.size() * 8, key.algorithm().hmacParams()->lengthBits());

    // Verify exported raw key is identical to the imported data
    std::vector<uint8_t> raw_key;
    EXPECT_EQ(Status::Success(),
              ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
    EXPECT_BYTES_EQ(test_key, raw_key);

    std::vector<uint8_t> output;

    ASSERT_EQ(Status::Success(),
              Sign(algorithm, key, CryptoData(test_message), &output));

    EXPECT_BYTES_EQ(test_mac, output);

    bool signature_match = false;
    EXPECT_EQ(Status::Success(),
              Verify(algorithm,
                     key,
                     CryptoData(output),
                     CryptoData(test_message),
                     &signature_match));
    EXPECT_TRUE(signature_match);

    // Ensure truncated signature does not verify by passing one less byte.
    EXPECT_EQ(Status::Success(),
              Verify(algorithm,
                     key,
                     CryptoData(vector_as_array(&output), output.size() - 1),
                     CryptoData(test_message),
                     &signature_match));
    EXPECT_FALSE(signature_match);

    // Ensure truncated signature does not verify by passing no bytes.
    EXPECT_EQ(Status::Success(),
              Verify(algorithm,
                     key,
                     CryptoData(),
                     CryptoData(test_message),
                     &signature_match));
    EXPECT_FALSE(signature_match);

    // Ensure extra long signature does not cause issues and fails.
    const unsigned char kLongSignature[1024] = {0};
    EXPECT_EQ(Status::Success(),
              Verify(algorithm,
                     key,
                     CryptoData(kLongSignature, sizeof(kLongSignature)),
                     CryptoData(test_message),
                     &signature_match));
    EXPECT_FALSE(signature_match);
  }
}

TEST_F(SharedCryptoTest, AesCbcFailures) {
  const std::string key_hex = "2b7e151628aed2a6abf7158809cf4f3c";
  blink::WebCryptoKey key = ImportSecretKeyFromRaw(
      HexStringToBytes(key_hex),
      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
      blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageDecrypt);

  // Verify exported raw key is identical to the imported data
  std::vector<uint8_t> raw_key;
  EXPECT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
  EXPECT_BYTES_EQ_HEX(key_hex, raw_key);

  std::vector<uint8_t> output;

  // Use an invalid |iv| (fewer than 16 bytes)
  {
    std::vector<uint8_t> input(32);
    std::vector<uint8_t> iv;
    EXPECT_EQ(Status::ErrorIncorrectSizeAesCbcIv(),
              Encrypt(webcrypto::CreateAesCbcAlgorithm(iv),
                      key,
                      CryptoData(input),
                      &output));
    EXPECT_EQ(Status::ErrorIncorrectSizeAesCbcIv(),
              Decrypt(webcrypto::CreateAesCbcAlgorithm(iv),
                      key,
                      CryptoData(input),
                      &output));
  }

  // Use an invalid |iv| (more than 16 bytes)
  {
    std::vector<uint8_t> input(32);
    std::vector<uint8_t> iv(17);
    EXPECT_EQ(Status::ErrorIncorrectSizeAesCbcIv(),
              Encrypt(webcrypto::CreateAesCbcAlgorithm(iv),
                      key,
                      CryptoData(input),
                      &output));
    EXPECT_EQ(Status::ErrorIncorrectSizeAesCbcIv(),
              Decrypt(webcrypto::CreateAesCbcAlgorithm(iv),
                      key,
                      CryptoData(input),
                      &output));
  }

  // Give an input that is too large (would cause integer overflow when
  // narrowing to an int).
  {
    std::vector<uint8_t> iv(16);

    // Pretend the input is large. Don't pass data pointer as NULL in case that
    // is special cased; the implementation shouldn't actually dereference the
    // data.
    CryptoData input(&iv[0], INT_MAX - 3);

    EXPECT_EQ(Status::ErrorDataTooLarge(),
              Encrypt(CreateAesCbcAlgorithm(iv), key, input, &output));
    EXPECT_EQ(Status::ErrorDataTooLarge(),
              Decrypt(CreateAesCbcAlgorithm(iv), key, input, &output));
  }

  // Fail importing the key (too few bytes specified)
  {
    std::vector<uint8_t> key_raw(1);
    std::vector<uint8_t> iv(16);

    blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
    EXPECT_EQ(Status::ErrorImportAesKeyLength(),
              ImportKey(blink::WebCryptoKeyFormatRaw,
                        CryptoData(key_raw),
                        CreateAesCbcAlgorithm(iv),
                        true,
                        blink::WebCryptoKeyUsageEncrypt,
                        &key));
  }

  // Fail exporting the key in SPKI and PKCS#8 formats (not allowed for secret
  // keys).
  EXPECT_EQ(Status::ErrorUnsupportedExportKeyFormat(),
            ExportKey(blink::WebCryptoKeyFormatSpki, key, &output));
  EXPECT_EQ(Status::ErrorUnsupportedExportKeyFormat(),
            ExportKey(blink::WebCryptoKeyFormatPkcs8, key, &output));
}

TEST_F(SharedCryptoTest, ImportAesCbcSpkiFailure) {
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::ErrorUnsupportedImportKeyFormat(),
            ImportKey(blink::WebCryptoKeyFormatSpki,
                      CryptoData(HexStringToBytes(kPublicKeySpkiDerHex)),
                      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
                      true,
                      blink::WebCryptoKeyUsageEncrypt,
                      &key));
}

TEST_F(SharedCryptoTest, AesCbcSampleSets) {
  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("aes_cbc.json", &tests));

  for (size_t test_index = 0; test_index < tests->GetSize(); ++test_index) {
    SCOPED_TRACE(test_index);
    base::DictionaryValue* test;
    ASSERT_TRUE(tests->GetDictionary(test_index, &test));

    std::vector<uint8_t> test_key = GetBytesFromHexString(test, "key");
    std::vector<uint8_t> test_iv = GetBytesFromHexString(test, "iv");
    std::vector<uint8_t> test_plain_text =
        GetBytesFromHexString(test, "plain_text");
    std::vector<uint8_t> test_cipher_text =
        GetBytesFromHexString(test, "cipher_text");

    blink::WebCryptoKey key = ImportSecretKeyFromRaw(
        test_key,
        CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
        blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageDecrypt);

    EXPECT_EQ(test_key.size() * 8, key.algorithm().aesParams()->lengthBits());

    // Verify exported raw key is identical to the imported data
    std::vector<uint8_t> raw_key;
    EXPECT_EQ(Status::Success(),
              ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
    EXPECT_BYTES_EQ(test_key, raw_key);

    std::vector<uint8_t> output;

    // Test encryption.
    EXPECT_EQ(Status::Success(),
              Encrypt(webcrypto::CreateAesCbcAlgorithm(test_iv),
                      key,
                      CryptoData(test_plain_text),
                      &output));
    EXPECT_BYTES_EQ(test_cipher_text, output);

    // Test decryption.
    EXPECT_EQ(Status::Success(),
              Decrypt(webcrypto::CreateAesCbcAlgorithm(test_iv),
                      key,
                      CryptoData(test_cipher_text),
                      &output));
    EXPECT_BYTES_EQ(test_plain_text, output);

    const unsigned int kAesCbcBlockSize = 16;

    // Decrypt with a padding error by stripping the last block. This also ends
    // up testing decryption over empty cipher text.
    if (test_cipher_text.size() >= kAesCbcBlockSize) {
      EXPECT_EQ(Status::OperationError(),
                Decrypt(CreateAesCbcAlgorithm(test_iv),
                        key,
                        CryptoData(&test_cipher_text[0],
                                   test_cipher_text.size() - kAesCbcBlockSize),
                        &output));
    }

    // Decrypt cipher text which is not a multiple of block size by stripping
    // a few bytes off the cipher text.
    if (test_cipher_text.size() > 3) {
      EXPECT_EQ(
          Status::OperationError(),
          Decrypt(CreateAesCbcAlgorithm(test_iv),
                  key,
                  CryptoData(&test_cipher_text[0], test_cipher_text.size() - 3),
                  &output));
    }
  }
}

TEST_F(SharedCryptoTest, GenerateKeyAes) {
  // Check key generation for each of AES-CBC, AES-GCM, and AES-KW, and for each
  // allowed key length.
  std::vector<blink::WebCryptoAlgorithm> algorithm;
  const unsigned short kKeyLength[] = {128, 256};
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kKeyLength); ++i) {
    algorithm.push_back(CreateAesCbcKeyGenAlgorithm(kKeyLength[i]));
    algorithm.push_back(CreateAesKwKeyGenAlgorithm(kKeyLength[i]));
    if (SupportsAesGcm())
      algorithm.push_back(CreateAesGcmKeyGenAlgorithm(kKeyLength[i]));
  }
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  std::vector<std::vector<uint8_t> > keys;
  std::vector<uint8_t> key_bytes;
  for (size_t i = 0; i < algorithm.size(); ++i) {
    SCOPED_TRACE(i);
    // Generate a small sample of keys.
    keys.clear();
    for (int j = 0; j < 16; ++j) {
      ASSERT_EQ(Status::Success(),
                GenerateSecretKey(algorithm[i], true, 0, &key));
      EXPECT_TRUE(key.handle());
      EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
      ASSERT_EQ(Status::Success(),
                ExportKey(blink::WebCryptoKeyFormatRaw, key, &key_bytes));
      EXPECT_EQ(key_bytes.size() * 8,
                key.algorithm().aesParams()->lengthBits());
      keys.push_back(key_bytes);
    }
    // Ensure all entries in the key sample set are unique. This is a simplistic
    // estimate of whether the generated keys appear random.
    EXPECT_FALSE(CopiesExist(keys));
  }
}

TEST_F(SharedCryptoTest, GenerateKeyAesBadLength) {
  const unsigned short kKeyLen[] = {0, 127, 257};
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kKeyLen); ++i) {
    SCOPED_TRACE(i);
    EXPECT_EQ(Status::ErrorGenerateKeyLength(),
              GenerateSecretKey(
                  CreateAesCbcKeyGenAlgorithm(kKeyLen[i]), true, 0, &key));
    EXPECT_EQ(Status::ErrorGenerateKeyLength(),
              GenerateSecretKey(
                  CreateAesKwKeyGenAlgorithm(kKeyLen[i]), true, 0, &key));
    if (SupportsAesGcm()) {
      EXPECT_EQ(Status::ErrorGenerateKeyLength(),
                GenerateSecretKey(
                    CreateAesGcmKeyGenAlgorithm(kKeyLen[i]), true, 0, &key));
    }
  }
}

TEST_F(SharedCryptoTest, GenerateKeyHmac) {
  // Generate a small sample of HMAC keys.
  std::vector<std::vector<uint8_t> > keys;
  for (int i = 0; i < 16; ++i) {
    std::vector<uint8_t> key_bytes;
    blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
    blink::WebCryptoAlgorithm algorithm =
        CreateHmacKeyGenAlgorithm(blink::WebCryptoAlgorithmIdSha1, 512);
    ASSERT_EQ(Status::Success(), GenerateSecretKey(algorithm, true, 0, &key));
    EXPECT_FALSE(key.isNull());
    EXPECT_TRUE(key.handle());
    EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
    EXPECT_EQ(blink::WebCryptoAlgorithmIdHmac, key.algorithm().id());
    EXPECT_EQ(blink::WebCryptoAlgorithmIdSha1,
              key.algorithm().hmacParams()->hash().id());
    EXPECT_EQ(512u, key.algorithm().hmacParams()->lengthBits());

    std::vector<uint8_t> raw_key;
    ASSERT_EQ(Status::Success(),
              ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
    EXPECT_EQ(64U, raw_key.size());
    keys.push_back(raw_key);
  }
  // Ensure all entries in the key sample set are unique. This is a simplistic
  // estimate of whether the generated keys appear random.
  EXPECT_FALSE(CopiesExist(keys));
}

// If the key length is not provided, then the block size is used.
TEST_F(SharedCryptoTest, GenerateKeyHmacNoLength) {
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  blink::WebCryptoAlgorithm algorithm =
      CreateHmacKeyGenAlgorithm(blink::WebCryptoAlgorithmIdSha1, 0);
  ASSERT_EQ(Status::Success(), GenerateSecretKey(algorithm, true, 0, &key));
  EXPECT_TRUE(key.handle());
  EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdHmac, key.algorithm().id());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha1,
            key.algorithm().hmacParams()->hash().id());
  EXPECT_EQ(512u, key.algorithm().hmacParams()->lengthBits());
  std::vector<uint8_t> raw_key;
  ASSERT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
  EXPECT_EQ(64U, raw_key.size());

  // The block size for HMAC SHA-512 is larger.
  algorithm = CreateHmacKeyGenAlgorithm(blink::WebCryptoAlgorithmIdSha512, 0);
  ASSERT_EQ(Status::Success(), GenerateSecretKey(algorithm, true, 0, &key));
  EXPECT_EQ(blink::WebCryptoAlgorithmIdHmac, key.algorithm().id());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha512,
            key.algorithm().hmacParams()->hash().id());
  EXPECT_EQ(1024u, key.algorithm().hmacParams()->lengthBits());
  ASSERT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
  EXPECT_EQ(128U, raw_key.size());
}

TEST_F(SharedCryptoTest, ImportJwkKeyUsage) {
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  base::DictionaryValue dict;
  dict.SetString("kty", "oct");
  dict.SetBoolean("ext", false);
  dict.SetString("k", "GADWrMRHwQfoNaXU5fZvTg==");
  const blink::WebCryptoAlgorithm aes_cbc_algorithm =
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc);
  const blink::WebCryptoAlgorithm hmac_algorithm =
      webcrypto::CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha256);
  const blink::WebCryptoAlgorithm aes_kw_algorithm =
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);

  // Test null usage.
  base::ListValue* key_ops = new base::ListValue;
  // Note: the following call makes dict assume ownership of key_ops.
  dict.Set("key_ops", key_ops);
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(dict, aes_cbc_algorithm, false, 0, &key));
  EXPECT_EQ(0, key.usages());

  // Test each key_ops value translates to the correct Web Crypto value.
  struct TestCase {
    const char* jwk_key_op;
    const char* jwk_alg;
    const blink::WebCryptoAlgorithm algorithm;
    const blink::WebCryptoKeyUsage usage;
  };
  // TODO(padolph): Add 'deriveBits' key_ops value once it is supported.
  const TestCase test_case[] = {
      {"encrypt", "A128CBC", aes_cbc_algorithm,
       blink::WebCryptoKeyUsageEncrypt},
      {"decrypt", "A128CBC", aes_cbc_algorithm,
       blink::WebCryptoKeyUsageDecrypt},
      {"sign", "HS256", hmac_algorithm, blink::WebCryptoKeyUsageSign},
      {"verify", "HS256", hmac_algorithm, blink::WebCryptoKeyUsageVerify},
      {"wrapKey", "A128KW", aes_kw_algorithm, blink::WebCryptoKeyUsageWrapKey},
      {"unwrapKey", "A128KW", aes_kw_algorithm,
       blink::WebCryptoKeyUsageUnwrapKey}};
  for (size_t test_index = 0; test_index < ARRAYSIZE_UNSAFE(test_case);
       ++test_index) {
    SCOPED_TRACE(test_index);
    dict.SetString("alg", test_case[test_index].jwk_alg);
    key_ops->Clear();
    key_ops->AppendString(test_case[test_index].jwk_key_op);
    EXPECT_EQ(Status::Success(),
              ImportKeyJwkFromDict(dict,
                                   test_case[test_index].algorithm,
                                   false,
                                   test_case[test_index].usage,
                                   &key));
    EXPECT_EQ(test_case[test_index].usage, key.usages());
  }

  // Test discrete multiple usages.
  dict.SetString("alg", "A128CBC");
  key_ops->Clear();
  key_ops->AppendString("encrypt");
  key_ops->AppendString("decrypt");
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(dict,
                                 aes_cbc_algorithm,
                                 false,
                                 blink::WebCryptoKeyUsageDecrypt |
                                     blink::WebCryptoKeyUsageEncrypt,
                                 &key));
  EXPECT_EQ(blink::WebCryptoKeyUsageDecrypt | blink::WebCryptoKeyUsageEncrypt,
            key.usages());

  // Test constrained key usage (input usage is a subset of JWK usage).
  key_ops->Clear();
  key_ops->AppendString("encrypt");
  key_ops->AppendString("decrypt");
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(dict,
                                 aes_cbc_algorithm,
                                 false,
                                 blink::WebCryptoKeyUsageDecrypt,
                                 &key));
  EXPECT_EQ(blink::WebCryptoKeyUsageDecrypt, key.usages());

  // Test failure if input usage is NOT a strict subset of the JWK usage.
  key_ops->Clear();
  key_ops->AppendString("encrypt");
  EXPECT_EQ(Status::ErrorJwkKeyopsInconsistent(),
            ImportKeyJwkFromDict(dict,
                                 aes_cbc_algorithm,
                                 false,
                                 blink::WebCryptoKeyUsageEncrypt |
                                     blink::WebCryptoKeyUsageDecrypt,
                                 &key));

  // Test 'use' inconsistent with 'key_ops'.
  dict.SetString("alg", "HS256");
  dict.SetString("use", "sig");
  key_ops->AppendString("sign");
  key_ops->AppendString("verify");
  key_ops->AppendString("encrypt");
  EXPECT_EQ(Status::ErrorJwkUseAndKeyopsInconsistent(),
            ImportKeyJwkFromDict(
                dict,
                hmac_algorithm,
                false,
                blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify,
                &key));

  // Test JWK composite 'sig' use
  dict.Remove("key_ops", NULL);
  dict.SetString("use", "sig");
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(
                dict,
                hmac_algorithm,
                false,
                blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify,
                &key));
  EXPECT_EQ(blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify,
            key.usages());

  // Test JWK composite use 'enc' usage
  dict.SetString("alg", "A128CBC");
  dict.SetString("use", "enc");
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(dict,
                                 aes_cbc_algorithm,
                                 false,
                                 blink::WebCryptoKeyUsageDecrypt |
                                     blink::WebCryptoKeyUsageEncrypt |
                                     blink::WebCryptoKeyUsageWrapKey |
                                     blink::WebCryptoKeyUsageUnwrapKey,
                                 &key));
  EXPECT_EQ(blink::WebCryptoKeyUsageDecrypt | blink::WebCryptoKeyUsageEncrypt |
                blink::WebCryptoKeyUsageWrapKey |
                blink::WebCryptoKeyUsageUnwrapKey,
            key.usages());
}

TEST_F(SharedCryptoTest, ImportJwkFailures) {
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  blink::WebCryptoAlgorithm algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc);
  blink::WebCryptoKeyUsageMask usage_mask = blink::WebCryptoKeyUsageEncrypt;

  // Baseline pass: each test below breaks a single item, so we start with a
  // passing case to make sure each failure is caused by the isolated break.
  // Each breaking subtest below resets the dictionary to this passing case when
  // complete.
  base::DictionaryValue dict;
  RestoreJwkOctDictionary(&dict);
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));

  // Fail on empty JSON.
  EXPECT_EQ(
      Status::ErrorImportEmptyKeyData(),
      ImportKeyJwk(
          CryptoData(MakeJsonVector("")), algorithm, false, usage_mask, &key));

  // Fail on invalid JSON.
  const std::vector<uint8_t> bad_json_vec = MakeJsonVector(
      "{"
      "\"kty\"         : \"oct\","
      "\"alg\"         : \"HS256\","
      "\"use\"         : ");
  EXPECT_EQ(Status::ErrorJwkNotDictionary(),
            ImportKeyJwk(
                CryptoData(bad_json_vec), algorithm, false, usage_mask, &key));

  // Fail on JWK alg present but incorrect (expecting A128CBC).
  dict.SetString("alg", "A127CBC");
  EXPECT_EQ(Status::ErrorJwkAlgorithmInconsistent(),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on invalid kty.
  dict.SetString("kty", "foo");
  EXPECT_EQ(Status::ErrorJwkUnexpectedKty("oct"),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on missing kty.
  dict.Remove("kty", NULL);
  EXPECT_EQ(Status::ErrorJwkPropertyMissing("kty"),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on kty wrong type.
  dict.SetDouble("kty", 0.1);
  EXPECT_EQ(Status::ErrorJwkPropertyWrongType("kty", "string"),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on invalid use.
  dict.SetString("use", "foo");
  EXPECT_EQ(Status::ErrorJwkUnrecognizedUse(),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on invalid use (wrong type).
  dict.SetBoolean("use", true);
  EXPECT_EQ(Status::ErrorJwkPropertyWrongType("use", "string"),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on invalid extractable (wrong type).
  dict.SetInteger("ext", 0);
  EXPECT_EQ(Status::ErrorJwkPropertyWrongType("ext", "boolean"),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on invalid key_ops (wrong type).
  dict.SetBoolean("key_ops", true);
  EXPECT_EQ(Status::ErrorJwkPropertyWrongType("key_ops", "list"),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on inconsistent key_ops - asking for "encrypt" however JWK contains
  // only "foo".
  base::ListValue* key_ops = new base::ListValue;
  // Note: the following call makes dict assume ownership of key_ops.
  dict.Set("key_ops", key_ops);
  key_ops->AppendString("foo");
  EXPECT_EQ(Status::ErrorJwkKeyopsInconsistent(),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);
}

// Import a JWK with unrecognized values for "key_ops".
TEST_F(SharedCryptoTest, ImportJwkUnrecognizedKeyOps) {
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  blink::WebCryptoAlgorithm algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc);
  blink::WebCryptoKeyUsageMask usage_mask = blink::WebCryptoKeyUsageEncrypt;

  base::DictionaryValue dict;
  RestoreJwkOctDictionary(&dict);

  base::ListValue* key_ops = new base::ListValue;
  dict.Set("key_ops", key_ops);
  key_ops->AppendString("foo");
  key_ops->AppendString("bar");
  key_ops->AppendString("baz");
  key_ops->AppendString("encrypt");
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
}

// Import a JWK with a value in key_ops array that is not a string.
TEST_F(SharedCryptoTest, ImportJwkNonStringKeyOp) {
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  blink::WebCryptoAlgorithm algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc);
  blink::WebCryptoKeyUsageMask usage_mask = blink::WebCryptoKeyUsageEncrypt;

  base::DictionaryValue dict;
  RestoreJwkOctDictionary(&dict);

  base::ListValue* key_ops = new base::ListValue;
  dict.Set("key_ops", key_ops);
  key_ops->AppendString("encrypt");
  key_ops->AppendInteger(3);
  EXPECT_EQ(Status::ErrorJwkPropertyWrongType("key_ops[1]", "string"),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
}

TEST_F(SharedCryptoTest, ImportJwkOctFailures) {
  base::DictionaryValue dict;
  RestoreJwkOctDictionary(&dict);
  blink::WebCryptoAlgorithm algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc);
  blink::WebCryptoKeyUsageMask usage_mask = blink::WebCryptoKeyUsageEncrypt;
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();

  // Baseline pass.
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  EXPECT_EQ(algorithm.id(), key.algorithm().id());
  EXPECT_FALSE(key.extractable());
  EXPECT_EQ(blink::WebCryptoKeyUsageEncrypt, key.usages());
  EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());

  // The following are specific failure cases for when kty = "oct".

  // Fail on missing k.
  dict.Remove("k", NULL);
  EXPECT_EQ(Status::ErrorJwkPropertyMissing("k"),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on bad b64 encoding for k.
  dict.SetString("k", "Qk3f0DsytU8lfza2au #$% Htaw2xpop9GYyTuH0p5GghxTI=");
  EXPECT_EQ(Status::ErrorJwkBase64Decode("k"),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on empty k.
  dict.SetString("k", "");
  EXPECT_EQ(Status::ErrorJwkIncorrectKeyLength(),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on k actual length (120 bits) inconsistent with the embedded JWK alg
  // value (128) for an AES key.
  dict.SetString("k", "AVj42h0Y5aqGtE3yluKL");
  EXPECT_EQ(Status::ErrorJwkIncorrectKeyLength(),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);

  // Fail on k actual length (192 bits) inconsistent with the embedded JWK alg
  // value (128) for an AES key.
  dict.SetString("k", "dGhpcyAgaXMgIDI0ICBieXRlcyBsb25n");
  EXPECT_EQ(Status::ErrorJwkIncorrectKeyLength(),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  RestoreJwkOctDictionary(&dict);
}

TEST_F(SharedCryptoTest, ImportExportJwkRsaPublicKey) {
  if (!SupportsRsaKeyImport())
    return;

  const bool supports_rsa_oaep = SupportsRsaOaep();
  if (!supports_rsa_oaep) {
    LOG(WARNING) << "RSA-OAEP not supported on this platform. Skipping some"
                 << "tests.";
  }

  struct TestCase {
    const blink::WebCryptoAlgorithm algorithm;
    const blink::WebCryptoKeyUsageMask usage;
    const char* const jwk_alg;
  };
  const TestCase kTests[] = {
      // RSASSA-PKCS1-v1_5 SHA-1
      {CreateRsaHashedImportAlgorithm(
           blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
           blink::WebCryptoAlgorithmIdSha1),
       blink::WebCryptoKeyUsageVerify, "RS1"},
      // RSASSA-PKCS1-v1_5 SHA-256
      {CreateRsaHashedImportAlgorithm(
           blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
           blink::WebCryptoAlgorithmIdSha256),
       blink::WebCryptoKeyUsageVerify, "RS256"},
      // RSASSA-PKCS1-v1_5 SHA-384
      {CreateRsaHashedImportAlgorithm(
           blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
           blink::WebCryptoAlgorithmIdSha384),
       blink::WebCryptoKeyUsageVerify, "RS384"},
      // RSASSA-PKCS1-v1_5 SHA-512
      {CreateRsaHashedImportAlgorithm(
           blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
           blink::WebCryptoAlgorithmIdSha512),
       blink::WebCryptoKeyUsageVerify, "RS512"},
      // RSA-OAEP with SHA-1 and MGF-1 / SHA-1
      {CreateRsaHashedImportAlgorithm(blink::WebCryptoAlgorithmIdRsaOaep,
                                      blink::WebCryptoAlgorithmIdSha1),
       blink::WebCryptoKeyUsageEncrypt, "RSA-OAEP"},
      // RSA-OAEP with SHA-256 and MGF-1 / SHA-256
      {CreateRsaHashedImportAlgorithm(blink::WebCryptoAlgorithmIdRsaOaep,
                                      blink::WebCryptoAlgorithmIdSha256),
       blink::WebCryptoKeyUsageEncrypt, "RSA-OAEP-256"},
      // RSA-OAEP with SHA-384 and MGF-1 / SHA-384
      {CreateRsaHashedImportAlgorithm(blink::WebCryptoAlgorithmIdRsaOaep,
                                      blink::WebCryptoAlgorithmIdSha384),
       blink::WebCryptoKeyUsageEncrypt, "RSA-OAEP-384"},
      // RSA-OAEP with SHA-512 and MGF-1 / SHA-512
      {CreateRsaHashedImportAlgorithm(blink::WebCryptoAlgorithmIdRsaOaep,
                                      blink::WebCryptoAlgorithmIdSha512),
       blink::WebCryptoKeyUsageEncrypt, "RSA-OAEP-512"}};

  for (size_t test_index = 0; test_index < ARRAYSIZE_UNSAFE(kTests);
       ++test_index) {
    SCOPED_TRACE(test_index);
    const TestCase& test = kTests[test_index];
    if (!supports_rsa_oaep &&
        test.algorithm.id() == blink::WebCryptoAlgorithmIdRsaOaep) {
      continue;
    }

    // Import the spki to create a public key
    blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
    ASSERT_EQ(Status::Success(),
              ImportKey(blink::WebCryptoKeyFormatSpki,
                        CryptoData(HexStringToBytes(kPublicKeySpkiDerHex)),
                        test.algorithm,
                        true,
                        test.usage,
                        &public_key));

    // Export the public key as JWK and verify its contents
    std::vector<uint8_t> jwk;
    ASSERT_EQ(Status::Success(),
              ExportKey(blink::WebCryptoKeyFormatJwk, public_key, &jwk));
    EXPECT_TRUE(VerifyPublicJwk(jwk,
                                test.jwk_alg,
                                kPublicKeyModulusHex,
                                kPublicKeyExponentHex,
                                test.usage));

    // Import the JWK back in to create a new key
    blink::WebCryptoKey public_key2 = blink::WebCryptoKey::createNull();
    ASSERT_EQ(
        Status::Success(),
        ImportKeyJwk(
            CryptoData(jwk), test.algorithm, true, test.usage, &public_key2));
    ASSERT_TRUE(public_key2.handle());
    EXPECT_EQ(blink::WebCryptoKeyTypePublic, public_key2.type());
    EXPECT_TRUE(public_key2.extractable());
    EXPECT_EQ(test.algorithm.id(), public_key2.algorithm().id());

    // Only perform SPKI consistency test for RSA-SSA as its
    // export format is the same as kPublicKeySpkiDerHex
    if (test.algorithm.id() == blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5) {
      // Export the new key as spki and compare to the original.
      std::vector<uint8_t> spki;
      ASSERT_EQ(Status::Success(),
                ExportKey(blink::WebCryptoKeyFormatSpki, public_key2, &spki));
      EXPECT_BYTES_EQ_HEX(kPublicKeySpkiDerHex, CryptoData(spki));
    }
  }
}

TEST_F(SharedCryptoTest, ImportJwkRsaFailures) {
  base::DictionaryValue dict;
  RestoreJwkRsaDictionary(&dict);
  blink::WebCryptoAlgorithm algorithm =
      CreateRsaHashedImportAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256);
  blink::WebCryptoKeyUsageMask usage_mask = blink::WebCryptoKeyUsageVerify;
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();

  // An RSA public key JWK _must_ have an "n" (modulus) and an "e" (exponent)
  // entry, while an RSA private key must have those plus at least a "d"
  // (private exponent) entry.
  // See http://tools.ietf.org/html/draft-ietf-jose-json-web-algorithms-18,
  // section 6.3.

  // Baseline pass.
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  EXPECT_EQ(algorithm.id(), key.algorithm().id());
  EXPECT_FALSE(key.extractable());
  EXPECT_EQ(blink::WebCryptoKeyUsageVerify, key.usages());
  EXPECT_EQ(blink::WebCryptoKeyTypePublic, key.type());

  // The following are specific failure cases for when kty = "RSA".

  // Fail if either "n" or "e" is not present or malformed.
  const std::string kKtyParmName[] = {"n", "e"};
  for (size_t idx = 0; idx < ARRAYSIZE_UNSAFE(kKtyParmName); ++idx) {
    // Fail on missing parameter.
    dict.Remove(kKtyParmName[idx], NULL);
    EXPECT_NE(Status::Success(),
              ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
    RestoreJwkRsaDictionary(&dict);

    // Fail on bad b64 parameter encoding.
    dict.SetString(kKtyParmName[idx], "Qk3f0DsytU8lfza2au #$% Htaw2xpop9yTuH0");
    EXPECT_NE(Status::Success(),
              ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
    RestoreJwkRsaDictionary(&dict);

    // Fail on empty parameter.
    dict.SetString(kKtyParmName[idx], "");
    EXPECT_EQ(Status::ErrorJwkEmptyBigInteger(kKtyParmName[idx]),
              ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
    RestoreJwkRsaDictionary(&dict);
  }
}

TEST_F(SharedCryptoTest, ImportJwkInputConsistency) {
  // The Web Crypto spec says that if a JWK value is present, but is
  // inconsistent with the input value, the operation must fail.

  // Consistency rules when JWK value is not present: Inputs should be used.
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  bool extractable = false;
  blink::WebCryptoAlgorithm algorithm =
      CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha256);
  blink::WebCryptoKeyUsageMask usage_mask = blink::WebCryptoKeyUsageVerify;
  base::DictionaryValue dict;
  dict.SetString("kty", "oct");
  dict.SetString("k", "l3nZEgZCeX8XRwJdWyK3rGB8qwjhdY8vOkbIvh4lxTuMao9Y_--hdg");
  std::vector<uint8_t> json_vec = MakeJsonVector(dict);
  EXPECT_EQ(
      Status::Success(),
      ImportKeyJwk(
          CryptoData(json_vec), algorithm, extractable, usage_mask, &key));
  EXPECT_TRUE(key.handle());
  EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
  EXPECT_EQ(extractable, key.extractable());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdHmac, key.algorithm().id());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha256,
            key.algorithm().hmacParams()->hash().id());
  EXPECT_EQ(320u, key.algorithm().hmacParams()->lengthBits());
  EXPECT_EQ(blink::WebCryptoKeyUsageVerify, key.usages());
  key = blink::WebCryptoKey::createNull();

  // Consistency rules when JWK value exists: Fail if inconsistency is found.

  // Pass: All input values are consistent with the JWK values.
  dict.Clear();
  dict.SetString("kty", "oct");
  dict.SetString("alg", "HS256");
  dict.SetString("use", "sig");
  dict.SetBoolean("ext", false);
  dict.SetString("k", "l3nZEgZCeX8XRwJdWyK3rGB8qwjhdY8vOkbIvh4lxTuMao9Y_--hdg");
  json_vec = MakeJsonVector(dict);
  EXPECT_EQ(
      Status::Success(),
      ImportKeyJwk(
          CryptoData(json_vec), algorithm, extractable, usage_mask, &key));

  // Extractable cases:
  // 1. input=T, JWK=F ==> fail (inconsistent)
  // 4. input=F, JWK=F ==> pass, result extractable is F
  // 2. input=T, JWK=T ==> pass, result extractable is T
  // 3. input=F, JWK=T ==> pass, result extractable is F
  EXPECT_EQ(
      Status::ErrorJwkExtInconsistent(),
      ImportKeyJwk(CryptoData(json_vec), algorithm, true, usage_mask, &key));
  EXPECT_EQ(
      Status::Success(),
      ImportKeyJwk(CryptoData(json_vec), algorithm, false, usage_mask, &key));
  EXPECT_FALSE(key.extractable());
  dict.SetBoolean("ext", true);
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(dict, algorithm, true, usage_mask, &key));
  EXPECT_TRUE(key.extractable());
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(dict, algorithm, false, usage_mask, &key));
  EXPECT_FALSE(key.extractable());
  dict.SetBoolean("ext", true);  // restore previous value

  // Fail: Input algorithm (AES-CBC) is inconsistent with JWK value
  // (HMAC SHA256).
  dict.Clear();
  dict.SetString("kty", "oct");
  dict.SetString("alg", "HS256");
  dict.SetString("k", "l3nZEgZCeX8XRwJdWyK3rGB8qwjhdY8vOkbIvh4lxTuMao9Y_--hdg");
  EXPECT_EQ(
      Status::ErrorJwkAlgorithmInconsistent(),
      ImportKeyJwkFromDict(dict,
                           CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
                           extractable,
                           blink::WebCryptoKeyUsageEncrypt,
                           &key));
  // Fail: Input usage (encrypt) is inconsistent with JWK value (use=sig).
  EXPECT_EQ(Status::ErrorJwkUseInconsistent(),
            ImportKeyJwk(CryptoData(json_vec),
                         CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
                         extractable,
                         blink::WebCryptoKeyUsageEncrypt,
                         &key));

  // Fail: Input algorithm (HMAC SHA1) is inconsistent with JWK value
  // (HMAC SHA256).
  EXPECT_EQ(
      Status::ErrorJwkAlgorithmInconsistent(),
      ImportKeyJwk(CryptoData(json_vec),
                   CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha1),
                   extractable,
                   usage_mask,
                   &key));

  // Pass: JWK alg missing but input algorithm specified: use input value
  dict.Remove("alg", NULL);
  EXPECT_EQ(Status::Success(),
            ImportKeyJwkFromDict(
                dict,
                CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha256),
                extractable,
                usage_mask,
                &key));
  EXPECT_EQ(blink::WebCryptoAlgorithmIdHmac, algorithm.id());
  dict.SetString("alg", "HS256");

  // Fail: Input usage_mask (encrypt) is not a subset of the JWK value
  // (sign|verify). Moreover "encrypt" is not a valid usage for HMAC.
  EXPECT_EQ(Status::ErrorCreateKeyBadUsages(),
            ImportKeyJwk(CryptoData(json_vec),
                         algorithm,
                         extractable,
                         blink::WebCryptoKeyUsageEncrypt,
                         &key));

  // Fail: Input usage_mask (encrypt|sign|verify) is not a subset of the JWK
  // value (sign|verify). Moreover "encrypt" is not a valid usage for HMAC.
  usage_mask = blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageSign |
               blink::WebCryptoKeyUsageVerify;
  EXPECT_EQ(
      Status::ErrorCreateKeyBadUsages(),
      ImportKeyJwk(
          CryptoData(json_vec), algorithm, extractable, usage_mask, &key));

  // TODO(padolph): kty vs alg consistency tests: Depending on the kty value,
  // only certain alg values are permitted. For example, when kty = "RSA" alg
  // must be of the RSA family, or when kty = "oct" alg must be symmetric
  // algorithm.

  // TODO(padolph): key_ops consistency tests
}

TEST_F(SharedCryptoTest, ImportJwkHappy) {
  // This test verifies the happy path of JWK import, including the application
  // of the imported key material.

  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  bool extractable = false;
  blink::WebCryptoAlgorithm algorithm =
      CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha256);
  blink::WebCryptoKeyUsageMask usage_mask = blink::WebCryptoKeyUsageSign;

  // Import a symmetric key JWK and HMAC-SHA256 sign()
  // Uses the first SHA256 test vector from the HMAC sample set above.

  base::DictionaryValue dict;
  dict.SetString("kty", "oct");
  dict.SetString("alg", "HS256");
  dict.SetString("use", "sig");
  dict.SetBoolean("ext", false);
  dict.SetString("k", "l3nZEgZCeX8XRwJdWyK3rGB8qwjhdY8vOkbIvh4lxTuMao9Y_--hdg");

  ASSERT_EQ(
      Status::Success(),
      ImportKeyJwkFromDict(dict, algorithm, extractable, usage_mask, &key));

  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha256,
            key.algorithm().hmacParams()->hash().id());

  const std::vector<uint8_t> message_raw = HexStringToBytes(
      "b1689c2591eaf3c9e66070f8a77954ffb81749f1b00346f9dfe0b2ee905dcc288baf4a"
      "92de3f4001dd9f44c468c3d07d6c6ee82faceafc97c2fc0fc0601719d2dcd0aa2aec92"
      "d1b0ae933c65eb06a03c9c935c2bad0459810241347ab87e9f11adb30415424c6c7f5f"
      "22a003b8ab8de54f6ded0e3ab9245fa79568451dfa258e");

  std::vector<uint8_t> output;

  ASSERT_EQ(Status::Success(),
            Sign(CreateAlgorithm(blink::WebCryptoAlgorithmIdHmac),
                 key,
                 CryptoData(message_raw),
                 &output));

  const std::string mac_raw =
      "769f00d3e6a6cc1fb426a14a4f76c6462e6149726e0dee0ec0cf97a16605ac8b";

  EXPECT_BYTES_EQ_HEX(mac_raw, output);

  // TODO(padolph): Import an RSA public key JWK and use it
}

TEST_F(SharedCryptoTest, ImportExportJwkSymmetricKey) {
  // Raw keys are generated by openssl:
  // % openssl rand -hex <key length bytes>
  const char* const key_hex_128 = "3f1e7cd4f6f8543f6b1e16002e688623";
  const char* const key_hex_256 =
      "bd08286b81a74783fd1ccf46b7e05af84ee25ae021210074159e0c4d9d907692";
  const char* const key_hex_384 =
      "a22c5441c8b185602283d64c7221de1d0951e706bfc09539435ec0e0ed614e1d406623f2"
      "b31d31819fec30993380dd82";
  const char* const key_hex_512 =
      "5834f639000d4cf82de124fbfd26fb88d463e99f839a76ba41ac88967c80a3f61e1239a4"
      "52e573dba0750e988152988576efd75b8d0229b7aca2ada2afd392ee";
  const blink::WebCryptoAlgorithm aes_cbc_alg =
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc);
  const blink::WebCryptoAlgorithm aes_gcm_alg =
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesGcm);
  const blink::WebCryptoAlgorithm aes_kw_alg =
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);
  const blink::WebCryptoAlgorithm hmac_sha_1_alg =
      webcrypto::CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha1);
  const blink::WebCryptoAlgorithm hmac_sha_256_alg =
      webcrypto::CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha256);
  const blink::WebCryptoAlgorithm hmac_sha_384_alg =
      webcrypto::CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha384);
  const blink::WebCryptoAlgorithm hmac_sha_512_alg =
      webcrypto::CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha512);

  struct TestCase {
    const char* const key_hex;
    const blink::WebCryptoAlgorithm algorithm;
    const blink::WebCryptoKeyUsageMask usage;
    const char* const jwk_alg;
  };

  // TODO(padolph): Test AES-CTR JWK export, once AES-CTR import works.
  const TestCase kTests[] = {
      // AES-CBC 128
      {key_hex_128, aes_cbc_alg,
       blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageDecrypt,
       "A128CBC"},
      // AES-CBC 256
      {key_hex_256, aes_cbc_alg, blink::WebCryptoKeyUsageDecrypt, "A256CBC"},
      // AES-GCM 128
      {key_hex_128, aes_gcm_alg,
       blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageDecrypt,
       "A128GCM"},
      // AES-GCM 256
      {key_hex_256, aes_gcm_alg, blink::WebCryptoKeyUsageDecrypt, "A256GCM"},
      // AES-KW 128
      {key_hex_128, aes_kw_alg,
       blink::WebCryptoKeyUsageWrapKey | blink::WebCryptoKeyUsageUnwrapKey,
       "A128KW"},
      // AES-KW 256
      {key_hex_256, aes_kw_alg,
       blink::WebCryptoKeyUsageWrapKey | blink::WebCryptoKeyUsageUnwrapKey,
       "A256KW"},
      // HMAC SHA-1
      {key_hex_256, hmac_sha_1_alg,
       blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify, "HS1"},
      // HMAC SHA-384
      {key_hex_384, hmac_sha_384_alg, blink::WebCryptoKeyUsageSign, "HS384"},
      // HMAC SHA-512
      {key_hex_512, hmac_sha_512_alg, blink::WebCryptoKeyUsageVerify, "HS512"},
      // Large usage value
      {key_hex_256, aes_cbc_alg,
       blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageDecrypt |
           blink::WebCryptoKeyUsageWrapKey | blink::WebCryptoKeyUsageUnwrapKey,
       "A256CBC"},
      // Zero usage value
      {key_hex_512, hmac_sha_512_alg, 0, "HS512"},
  };

  // Round-trip import/export each key.

  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  std::vector<uint8_t> json;
  for (size_t test_index = 0; test_index < ARRAYSIZE_UNSAFE(kTests);
       ++test_index) {
    SCOPED_TRACE(test_index);
    const TestCase& test = kTests[test_index];

    // Skip AES-GCM tests where not supported.
    if (test.algorithm.id() == blink::WebCryptoAlgorithmIdAesGcm &&
        !SupportsAesGcm()) {
      continue;
    }

    // Import a raw key.
    key = ImportSecretKeyFromRaw(
        HexStringToBytes(test.key_hex), test.algorithm, test.usage);

    // Export the key in JWK format and validate.
    ASSERT_EQ(Status::Success(),
              ExportKey(blink::WebCryptoKeyFormatJwk, key, &json));
    EXPECT_TRUE(VerifySecretJwk(json, test.jwk_alg, test.key_hex, test.usage));

    // Import the JWK-formatted key.
    ASSERT_EQ(
        Status::Success(),
        ImportKeyJwk(CryptoData(json), test.algorithm, true, test.usage, &key));
    EXPECT_TRUE(key.handle());
    EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
    EXPECT_EQ(test.algorithm.id(), key.algorithm().id());
    EXPECT_EQ(true, key.extractable());
    EXPECT_EQ(test.usage, key.usages());

    // Export the key in raw format and compare to the original.
    std::vector<uint8_t> key_raw_out;
    ASSERT_EQ(Status::Success(),
              ExportKey(blink::WebCryptoKeyFormatRaw, key, &key_raw_out));
    EXPECT_BYTES_EQ_HEX(test.key_hex, key_raw_out);
  }
}

TEST_F(SharedCryptoTest, ExportJwkEmptySymmetricKey) {
  const blink::WebCryptoAlgorithm import_algorithm =
      webcrypto::CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha1);

  blink::WebCryptoKeyUsageMask usages = blink::WebCryptoKeyUsageSign;
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();

  // Import a zero-byte HMAC key.
  const char key_data_hex[] = "";
  key = ImportSecretKeyFromRaw(
      HexStringToBytes(key_data_hex), import_algorithm, usages);
  EXPECT_EQ(0u, key.algorithm().hmacParams()->lengthBits());

  // Export the key in JWK format and validate.
  std::vector<uint8_t> json;
  ASSERT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatJwk, key, &json));
  EXPECT_TRUE(VerifySecretJwk(json, "HS1", key_data_hex, usages));

  // Now try re-importing the JWK key.
  key = blink::WebCryptoKey::createNull();
  EXPECT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatJwk,
                      CryptoData(json),
                      import_algorithm,
                      true,
                      usages,
                      &key));

  EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
  EXPECT_EQ(0u, key.algorithm().hmacParams()->lengthBits());

  std::vector<uint8_t> exported_key_data;
  EXPECT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatRaw, key, &exported_key_data));

  EXPECT_EQ(0u, exported_key_data.size());
}

TEST_F(SharedCryptoTest, ImportExportSpki) {
  if (!SupportsRsaKeyImport())
    return;

  // Passing case: Import a valid RSA key in SPKI format.
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatSpki,
                      CryptoData(HexStringToBytes(kPublicKeySpkiDerHex)),
                      CreateRsaHashedImportAlgorithm(
                          blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                          blink::WebCryptoAlgorithmIdSha256),
                      true,
                      blink::WebCryptoKeyUsageVerify,
                      &key));
  EXPECT_TRUE(key.handle());
  EXPECT_EQ(blink::WebCryptoKeyTypePublic, key.type());
  EXPECT_TRUE(key.extractable());
  EXPECT_EQ(blink::WebCryptoKeyUsageVerify, key.usages());
  EXPECT_EQ(kModulusLengthBits,
            key.algorithm().rsaHashedParams()->modulusLengthBits());
  EXPECT_BYTES_EQ_HEX(
      "010001",
      CryptoData(key.algorithm().rsaHashedParams()->publicExponent()));

  // Failing case: Empty SPKI data
  EXPECT_EQ(
      Status::ErrorImportEmptyKeyData(),
      ImportKey(blink::WebCryptoKeyFormatSpki,
                CryptoData(std::vector<uint8_t>()),
                CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5),
                true,
                blink::WebCryptoKeyUsageVerify,
                &key));

  // Failing case: Bad DER encoding.
  EXPECT_EQ(
      Status::DataError(),
      ImportKey(blink::WebCryptoKeyFormatSpki,
                CryptoData(HexStringToBytes("618333c4cb")),
                CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5),
                true,
                blink::WebCryptoKeyUsageVerify,
                &key));

  // Failing case: Import RSA key but provide an inconsistent input algorithm.
  EXPECT_EQ(Status::ErrorUnsupportedImportKeyFormat(),
            ImportKey(blink::WebCryptoKeyFormatSpki,
                      CryptoData(HexStringToBytes(kPublicKeySpkiDerHex)),
                      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
                      true,
                      blink::WebCryptoKeyUsageEncrypt,
                      &key));

  // Passing case: Export a previously imported RSA public key in SPKI format
  // and compare to original data.
  std::vector<uint8_t> output;
  ASSERT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatSpki, key, &output));
  EXPECT_BYTES_EQ_HEX(kPublicKeySpkiDerHex, output);

  // Failing case: Try to export a previously imported RSA public key in raw
  // format (not allowed for a public key).
  EXPECT_EQ(Status::ErrorUnsupportedExportKeyFormat(),
            ExportKey(blink::WebCryptoKeyFormatRaw, key, &output));

  // Failing case: Try to export a non-extractable key
  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatSpki,
                      CryptoData(HexStringToBytes(kPublicKeySpkiDerHex)),
                      CreateRsaHashedImportAlgorithm(
                          blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                          blink::WebCryptoAlgorithmIdSha256),
                      false,
                      blink::WebCryptoKeyUsageVerify,
                      &key));
  EXPECT_TRUE(key.handle());
  EXPECT_FALSE(key.extractable());
  EXPECT_EQ(Status::ErrorKeyNotExtractable(),
            ExportKey(blink::WebCryptoKeyFormatSpki, key, &output));

  // TODO(eroman): Failing test: Import a SPKI with an unrecognized hash OID
  // TODO(eroman): Failing test: Import a SPKI with invalid algorithm params
  // TODO(eroman): Failing test: Import a SPKI with inconsistent parameters
  // (e.g. SHA-1 in OID, SHA-256 in params)
  // TODO(eroman): Failing test: Import a SPKI for RSA-SSA, but with params
  // as OAEP/PSS
}

TEST_F(SharedCryptoTest, ImportExportPkcs8) {
  if (!SupportsRsaKeyImport())
    return;

  // Passing case: Import a valid RSA key in PKCS#8 format.
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatPkcs8,
                      CryptoData(HexStringToBytes(kPrivateKeyPkcs8DerHex)),
                      CreateRsaHashedImportAlgorithm(
                          blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                          blink::WebCryptoAlgorithmIdSha1),
                      true,
                      blink::WebCryptoKeyUsageSign,
                      &key));
  EXPECT_TRUE(key.handle());
  EXPECT_EQ(blink::WebCryptoKeyTypePrivate, key.type());
  EXPECT_TRUE(key.extractable());
  EXPECT_EQ(blink::WebCryptoKeyUsageSign, key.usages());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha1,
            key.algorithm().rsaHashedParams()->hash().id());
  EXPECT_EQ(kModulusLengthBits,
            key.algorithm().rsaHashedParams()->modulusLengthBits());
  EXPECT_BYTES_EQ_HEX(
      "010001",
      CryptoData(key.algorithm().rsaHashedParams()->publicExponent()));

  std::vector<uint8_t> exported_key;
  ASSERT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatPkcs8, key, &exported_key));
  EXPECT_BYTES_EQ_HEX(kPrivateKeyPkcs8DerHex, exported_key);

  // Failing case: Empty PKCS#8 data
  EXPECT_EQ(Status::ErrorImportEmptyKeyData(),
            ImportKey(blink::WebCryptoKeyFormatPkcs8,
                      CryptoData(std::vector<uint8_t>()),
                      CreateRsaHashedImportAlgorithm(
                          blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                          blink::WebCryptoAlgorithmIdSha1),
                      true,
                      blink::WebCryptoKeyUsageSign,
                      &key));

  // Failing case: Bad DER encoding.
  EXPECT_EQ(
      Status::DataError(),
      ImportKey(blink::WebCryptoKeyFormatPkcs8,
                CryptoData(HexStringToBytes("618333c4cb")),
                CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5),
                true,
                blink::WebCryptoKeyUsageSign,
                &key));

  // Failing case: Import RSA key but provide an inconsistent input algorithm
  // and usage. Several issues here:
  //   * AES-CBC doesn't support PKCS8 key format
  //   * AES-CBC doesn't support "sign" usage
  EXPECT_EQ(Status::ErrorUnsupportedImportKeyFormat(),
            ImportKey(blink::WebCryptoKeyFormatPkcs8,
                      CryptoData(HexStringToBytes(kPrivateKeyPkcs8DerHex)),
                      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
                      true,
                      blink::WebCryptoKeyUsageSign,
                      &key));
}

// Tests importing of PKCS8 data that does not define a valid RSA key.
TEST_F(SharedCryptoTest, ImportInvalidPkcs8) {
  if (!SupportsRsaKeyImport())
    return;

  // kPrivateKeyPkcs8DerHex defines an RSA private key in PKCS8 format, whose
  // parameters appear at the following offsets:
  //
  //   n: (offset=36, len=129)
  //   e: (offset=167, len=3)
  //   d: (offset=173, len=128)
  //   p: (offset=303, len=65)
  //   q: (offset=370, len=65)
  //   dp: (offset=437, len=64)
  //   dq; (offset=503, len=64)
  //   qi: (offset=569, len=64)

  // Do several tests, each of which invert a single byte within the input.
  const unsigned int kOffsetsToCorrupt[] = {
      50,   // inside n
      168,  // inside e
      175,  // inside d
      333,  // inside p
      373,  // inside q
      450,  // inside dp
      550,  // inside dq
      600,  // inside qi
  };

  for (size_t test_index = 0; test_index < arraysize(kOffsetsToCorrupt);
       ++test_index) {
    SCOPED_TRACE(test_index);

    unsigned int i = kOffsetsToCorrupt[test_index];
    std::vector<uint8_t> corrupted_data =
        HexStringToBytes(kPrivateKeyPkcs8DerHex);
    corrupted_data[i] = ~corrupted_data[i];

    blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
    EXPECT_EQ(Status::DataError(),
              ImportKey(blink::WebCryptoKeyFormatPkcs8,
                        CryptoData(corrupted_data),
                        CreateRsaHashedImportAlgorithm(
                            blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                            blink::WebCryptoAlgorithmIdSha1),
                        true,
                        blink::WebCryptoKeyUsageSign,
                        &key));
  }
}

// Tests JWK import and export by doing a roundtrip key conversion and ensuring
// it was lossless:
//
//   PKCS8 --> JWK --> PKCS8
TEST_F(SharedCryptoTest, ImportRsaPrivateKeyJwkToPkcs8RoundTrip) {
  if (!SupportsRsaKeyImport())
    return;

  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatPkcs8,
                      CryptoData(HexStringToBytes(kPrivateKeyPkcs8DerHex)),
                      CreateRsaHashedImportAlgorithm(
                          blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                          blink::WebCryptoAlgorithmIdSha1),
                      true,
                      blink::WebCryptoKeyUsageSign,
                      &key));

  std::vector<uint8_t> exported_key_jwk;
  ASSERT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatJwk, key, &exported_key_jwk));

  // All of the optional parameters (p, q, dp, dq, qi) should be present in the
  // output.
  const char* expected_jwk =
      "{\"alg\":\"RS1\",\"d\":\"M6UEKpCyfU9UUcqbu9C0R3GhAa-IQ0Cu-YhfKku-"
      "kuiUpySsPFaMj5eFOtB8AmbIxqPKCSnx6PESMYhEKfxNmuVf7olqEM5wfD7X5zTkRyejlXRQ"
      "GlMmgxCcKrrKuig8MbS9L1PD7jfjUs7jT55QO9gMBiKtecbc7og1R8ajsyU\",\"dp\":"
      "\"KPoTk4ZVvh-"
      "KFZy6ylpy6hkMMAieGc0nSlVvNsT24Z9VSzTAd3kEJ7vdjdPt4kSDKPOF2Bsw6OQ7L_-"
      "gJ4YZeQ\",\"dq\":\"Gos485j6cSBJiY1_t57gp3ZoeRKZzfoJ78DlB6yyHtdDAe9b_Ui-"
      "RV6utuFnglWCdYCo5OjhQVHRUQqCo_LnKQ\",\"e\":\"AQAB\",\"ext\":true,\"key_"
      "ops\":[\"sign\"],\"kty\":\"RSA\",\"n\":"
      "\"pW5KDnAQF1iaUYfcfqhB0Vby7A42rVKkTf6x5h962ZHYxRBW_-2xYrTA8oOhKoijlN_"
      "1JqtykcuzB86r_OCx39XNlQgJbVsri2311nHvY3fAkhyyPCcKcOJZjm_4nRnxBazC0_"
      "DLNfKSgOE4a29kxO8i4eHyDQzoz_siSb2aITc\",\"p\":\"5-"
      "iUJyCod1Fyc6NWBT6iobwMlKpy1VxuhilrLfyWeUjApyy8zKfqyzVwbgmh31WhU1vZs8w0Fg"
      "s7bc0-2o5kQw\",\"q\":\"tp3KHPfU1-yB51uQ_MqHSrzeEj_"
      "ScAGAqpBHm25I3o1n7ST58Z2FuidYdPVCzSDccj5pYzZKH5QlRSsmmmeZ_Q\",\"qi\":"
      "\"JxVqukEm0kqB86Uoy_sn9WiG-"
      "ECp9uhuF6RLlP6TGVhLjiL93h5aLjvYqluo2FhBlOshkKz4MrhH8To9JKefTQ\"}";

  ASSERT_EQ(CryptoData(std::string(expected_jwk)),
            CryptoData(exported_key_jwk));

  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatJwk,
                      CryptoData(exported_key_jwk),
                      CreateRsaHashedImportAlgorithm(
                          blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                          blink::WebCryptoAlgorithmIdSha1),
                      true,
                      blink::WebCryptoKeyUsageSign,
                      &key));

  std::vector<uint8_t> exported_key_pkcs8;
  ASSERT_EQ(
      Status::Success(),
      ExportKey(blink::WebCryptoKeyFormatPkcs8, key, &exported_key_pkcs8));

  ASSERT_EQ(CryptoData(HexStringToBytes(kPrivateKeyPkcs8DerHex)),
            CryptoData(exported_key_pkcs8));
}

// Tests importing multiple RSA private keys from JWK, and then exporting to
// PKCS8.
//
// This is a regression test for http://crbug.com/378315, for which importing
// a sequence of keys from JWK could yield the wrong key. The first key would
// be imported correctly, however every key after that would actually import
// the first key.
TEST_F(SharedCryptoTest, ImportMultipleRSAPrivateKeysJwk) {
  if (!SupportsRsaKeyImport())
    return;

  scoped_ptr<base::ListValue> key_list;
  ASSERT_TRUE(ReadJsonTestFileToList("rsa_private_keys.json", &key_list));

  // For this test to be meaningful the keys MUST be kept alive before importing
  // new keys.
  std::vector<blink::WebCryptoKey> live_keys;

  for (size_t key_index = 0; key_index < key_list->GetSize(); ++key_index) {
    SCOPED_TRACE(key_index);

    base::DictionaryValue* key_values;
    ASSERT_TRUE(key_list->GetDictionary(key_index, &key_values));

    // Get the JWK representation of the key.
    base::DictionaryValue* key_jwk;
    ASSERT_TRUE(key_values->GetDictionary("jwk", &key_jwk));

    // Get the PKCS8 representation of the key.
    std::string pkcs8_hex_string;
    ASSERT_TRUE(key_values->GetString("pkcs8", &pkcs8_hex_string));
    std::vector<uint8_t> pkcs8_bytes = HexStringToBytes(pkcs8_hex_string);

    // Get the modulus length for the key.
    int modulus_length_bits = 0;
    ASSERT_TRUE(key_values->GetInteger("modulusLength", &modulus_length_bits));

    blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();

    // Import the key from JWK.
    ASSERT_EQ(
        Status::Success(),
        ImportKeyJwkFromDict(*key_jwk,
                             CreateRsaHashedImportAlgorithm(
                                 blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                 blink::WebCryptoAlgorithmIdSha256),
                             true,
                             blink::WebCryptoKeyUsageSign,
                             &private_key));

    live_keys.push_back(private_key);

    EXPECT_EQ(
        modulus_length_bits,
        static_cast<int>(
            private_key.algorithm().rsaHashedParams()->modulusLengthBits()));

    // Export to PKCS8 and verify that it matches expectation.
    std::vector<uint8_t> exported_key_pkcs8;
    ASSERT_EQ(
        Status::Success(),
        ExportKey(
            blink::WebCryptoKeyFormatPkcs8, private_key, &exported_key_pkcs8));

    EXPECT_BYTES_EQ(pkcs8_bytes, exported_key_pkcs8);
  }
}

// Import an RSA private key using JWK. Next import a JWK containing the same
// modulus, but mismatched parameters for the rest. It should NOT be possible
// that the second import retrieves the first key. See http://crbug.com/378315
// for how that could happen.
TEST_F(SharedCryptoTest, ImportJwkExistingModulusAndInvalid) {
#if defined(USE_NSS)
  if (!NSS_VersionCheck("3.16.2")) {
    LOG(WARNING) << "Skipping test because lacks NSS support";
    return;
  }
#endif

  scoped_ptr<base::ListValue> key_list;
  ASSERT_TRUE(ReadJsonTestFileToList("rsa_private_keys.json", &key_list));

  // Import a 1024-bit private key.
  base::DictionaryValue* key1_props;
  ASSERT_TRUE(key_list->GetDictionary(1, &key1_props));
  base::DictionaryValue* key1_jwk;
  ASSERT_TRUE(key1_props->GetDictionary("jwk", &key1_jwk));

  blink::WebCryptoKey key1 = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKeyJwkFromDict(*key1_jwk,
                                 CreateRsaHashedImportAlgorithm(
                                     blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256),
                                 true,
                                 blink::WebCryptoKeyUsageSign,
                                 &key1));

  ASSERT_EQ(1024u, key1.algorithm().rsaHashedParams()->modulusLengthBits());

  // Construct a JWK using the modulus of key1, but all the other fields from
  // another key (also a 1024-bit private key).
  base::DictionaryValue* key2_props;
  ASSERT_TRUE(key_list->GetDictionary(5, &key2_props));
  base::DictionaryValue* key2_jwk;
  ASSERT_TRUE(key2_props->GetDictionary("jwk", &key2_jwk));
  std::string modulus;
  key1_jwk->GetString("n", &modulus);
  key2_jwk->SetString("n", modulus);

  // This should fail, as the n,e,d parameters are not consistent. It MUST NOT
  // somehow return the key created earlier.
  blink::WebCryptoKey key2 = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::OperationError(),
            ImportKeyJwkFromDict(*key2_jwk,
                                 CreateRsaHashedImportAlgorithm(
                                     blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256),
                                 true,
                                 blink::WebCryptoKeyUsageSign,
                                 &key2));
}

// Import a JWK RSA private key with some optional parameters missing (q, dp,
// dq, qi).
//
// The only optional parameter included is "p".
//
// This fails because JWA says that producers must include either ALL optional
// parameters or NONE.
TEST_F(SharedCryptoTest, ImportRsaPrivateKeyJwkMissingOptionalParams) {
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();

  base::DictionaryValue dict;
  dict.SetString("kty", "RSA");
  dict.SetString("alg", "RS1");

  dict.SetString(
      "n",
      "pW5KDnAQF1iaUYfcfqhB0Vby7A42rVKkTf6x5h962ZHYxRBW_-2xYrTA8oOhKoijlN_"
      "1JqtykcuzB86r_OCx39XNlQgJbVsri2311nHvY3fAkhyyPCcKcOJZjm_4nRnxBazC0_"
      "DLNfKSgOE4a29kxO8i4eHyDQzoz_siSb2aITc");
  dict.SetString("e", "AQAB");
  dict.SetString(
      "d",
      "M6UEKpCyfU9UUcqbu9C0R3GhAa-IQ0Cu-YhfKku-"
      "kuiUpySsPFaMj5eFOtB8AmbIxqPKCSnx6PESMYhEKfxNmuVf7olqEM5wfD7X5zTkRyejlXRQ"
      "GlMmgxCcKrrKuig8MbS9L1PD7jfjUs7jT55QO9gMBiKtecbc7og1R8ajsyU");

  dict.SetString("p",
                 "5-"
                 "iUJyCod1Fyc6NWBT6iobwMlKpy1VxuhilrLfyWeUjApyy8zKfqyzVwbgmh31W"
                 "hU1vZs8w0Fgs7bc0-2o5kQw");

  ASSERT_EQ(Status::ErrorJwkPropertyMissing("q"),
            ImportKeyJwkFromDict(dict,
                                 CreateRsaHashedImportAlgorithm(
                                     blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha1),
                                 true,
                                 blink::WebCryptoKeyUsageSign,
                                 &key));
}

// Import a JWK RSA private key, without any of the optional parameters.
//
// According to JWA, such keys are valid, but applications SHOULD
// include all the parameters when sending, and recipients MAY
// accept them, but are not required to. Chromium's WebCrypto does
// not allow such degenerate keys.
TEST_F(SharedCryptoTest, ImportRsaPrivateKeyJwkIncorrectOptionalEmpty) {
  if (!SupportsRsaKeyImport())
    return;

  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();

  base::DictionaryValue dict;
  dict.SetString("kty", "RSA");
  dict.SetString("alg", "RS1");

  dict.SetString(
      "n",
      "pW5KDnAQF1iaUYfcfqhB0Vby7A42rVKkTf6x5h962ZHYxRBW_-2xYrTA8oOhKoijlN_"
      "1JqtykcuzB86r_OCx39XNlQgJbVsri2311nHvY3fAkhyyPCcKcOJZjm_4nRnxBazC0_"
      "DLNfKSgOE4a29kxO8i4eHyDQzoz_siSb2aITc");
  dict.SetString("e", "AQAB");
  dict.SetString(
      "d",
      "M6UEKpCyfU9UUcqbu9C0R3GhAa-IQ0Cu-YhfKku-"
      "kuiUpySsPFaMj5eFOtB8AmbIxqPKCSnx6PESMYhEKfxNmuVf7olqEM5wfD7X5zTkRyejlXRQ"
      "GlMmgxCcKrrKuig8MbS9L1PD7jfjUs7jT55QO9gMBiKtecbc7og1R8ajsyU");

  ASSERT_EQ(Status::ErrorJwkPropertyMissing("p"),
            ImportKeyJwkFromDict(dict,
                                 CreateRsaHashedImportAlgorithm(
                                     blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha1),
                                 true,
                                 blink::WebCryptoKeyUsageSign,
                                 &key));
}

// Tries importing a public RSA key whose exponent contains leading zeros.
TEST_F(SharedCryptoTest, ImportJwkRsaNonMinimalExponent) {
  base::DictionaryValue dict;

  dict.SetString("kty", "RSA");
  dict.SetString("e", "AAEAAQ");  // 00 01 00 01
  dict.SetString(
      "n",
      "qLOyhK-OtQs4cDSoYPFGxJGfMYdjzWxVmMiuSBGh4KvEx-CwgtaTpef87Wdc9GaFEncsDLxk"
      "p0LGxjD1M8jMcvYq6DPEC_JYQumEu3i9v5fAEH1VvbZi9cTg-rmEXLUUjvc5LdOq_5OuHmtm"
      "e7PUJHYW1PW6ENTP0ibeiNOfFvs");

  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();

  EXPECT_EQ(Status::ErrorJwkBigIntegerHasLeadingZero("e"),
            ImportKeyJwkFromDict(dict,
                                 CreateRsaHashedImportAlgorithm(
                                     blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256),
                                 false,
                                 blink::WebCryptoKeyUsageVerify,
                                 &key));
}

TEST_F(SharedCryptoTest, GenerateKeyPairRsa) {
  // Note: using unrealistic short key lengths here to avoid bogging down tests.

  // Successful WebCryptoAlgorithmIdRsaSsaPkcs1v1_5 key generation (sha256)
  const unsigned int modulus_length = 256;
  const std::vector<uint8_t> public_exponent = HexStringToBytes("010001");
  blink::WebCryptoAlgorithm algorithm =
      CreateRsaHashedKeyGenAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256,
                                     modulus_length,
                                     public_exponent);
  bool extractable = true;
  const blink::WebCryptoKeyUsageMask usage_mask = 0;
  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();

  EXPECT_EQ(Status::Success(),
            GenerateKeyPair(
                algorithm, extractable, usage_mask, &public_key, &private_key));
  EXPECT_FALSE(public_key.isNull());
  EXPECT_FALSE(private_key.isNull());
  EXPECT_EQ(blink::WebCryptoKeyTypePublic, public_key.type());
  EXPECT_EQ(blink::WebCryptoKeyTypePrivate, private_key.type());
  EXPECT_EQ(modulus_length,
            public_key.algorithm().rsaHashedParams()->modulusLengthBits());
  EXPECT_EQ(modulus_length,
            private_key.algorithm().rsaHashedParams()->modulusLengthBits());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha256,
            public_key.algorithm().rsaHashedParams()->hash().id());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha256,
            private_key.algorithm().rsaHashedParams()->hash().id());
  EXPECT_TRUE(public_key.extractable());
  EXPECT_EQ(extractable, private_key.extractable());
  EXPECT_EQ(usage_mask, public_key.usages());
  EXPECT_EQ(usage_mask, private_key.usages());

  // Try exporting the generated key pair, and then re-importing to verify that
  // the exported data was valid.
  std::vector<uint8_t> public_key_spki;
  EXPECT_EQ(
      Status::Success(),
      ExportKey(blink::WebCryptoKeyFormatSpki, public_key, &public_key_spki));

  if (SupportsRsaKeyImport()) {
    public_key = blink::WebCryptoKey::createNull();
    EXPECT_EQ(Status::Success(),
              ImportKey(blink::WebCryptoKeyFormatSpki,
                        CryptoData(public_key_spki),
                        CreateRsaHashedImportAlgorithm(
                            blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                            blink::WebCryptoAlgorithmIdSha256),
                        true,
                        usage_mask,
                        &public_key));
    EXPECT_EQ(modulus_length,
              public_key.algorithm().rsaHashedParams()->modulusLengthBits());

    std::vector<uint8_t> private_key_pkcs8;
    EXPECT_EQ(
        Status::Success(),
        ExportKey(
            blink::WebCryptoKeyFormatPkcs8, private_key, &private_key_pkcs8));
    private_key = blink::WebCryptoKey::createNull();
    EXPECT_EQ(Status::Success(),
              ImportKey(blink::WebCryptoKeyFormatPkcs8,
                        CryptoData(private_key_pkcs8),
                        CreateRsaHashedImportAlgorithm(
                            blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                            blink::WebCryptoAlgorithmIdSha256),
                        true,
                        usage_mask,
                        &private_key));
    EXPECT_EQ(modulus_length,
              private_key.algorithm().rsaHashedParams()->modulusLengthBits());
  }

  // Fail with bad modulus.
  algorithm =
      CreateRsaHashedKeyGenAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256,
                                     0,
                                     public_exponent);
  EXPECT_EQ(Status::ErrorGenerateRsaUnsupportedModulus(),
            GenerateKeyPair(
                algorithm, extractable, usage_mask, &public_key, &private_key));

  // Fail with bad exponent: larger than unsigned long.
  unsigned int exponent_length = sizeof(unsigned long) + 1;  // NOLINT
  const std::vector<uint8_t> long_exponent(exponent_length, 0x01);
  algorithm =
      CreateRsaHashedKeyGenAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256,
                                     modulus_length,
                                     long_exponent);
  EXPECT_EQ(Status::ErrorGenerateKeyPublicExponent(),
            GenerateKeyPair(
                algorithm, extractable, usage_mask, &public_key, &private_key));

  // Fail with bad exponent: empty.
  const std::vector<uint8_t> empty_exponent;
  algorithm =
      CreateRsaHashedKeyGenAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256,
                                     modulus_length,
                                     empty_exponent);
  EXPECT_EQ(Status::ErrorGenerateKeyPublicExponent(),
            GenerateKeyPair(
                algorithm, extractable, usage_mask, &public_key, &private_key));

  // Fail with bad exponent: all zeros.
  std::vector<uint8_t> exponent_with_leading_zeros(15, 0x00);
  algorithm =
      CreateRsaHashedKeyGenAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256,
                                     modulus_length,
                                     exponent_with_leading_zeros);
  EXPECT_EQ(Status::ErrorGenerateKeyPublicExponent(),
            GenerateKeyPair(
                algorithm, extractable, usage_mask, &public_key, &private_key));

  // Key generation success using exponent with leading zeros.
  exponent_with_leading_zeros.insert(exponent_with_leading_zeros.end(),
                                     public_exponent.begin(),
                                     public_exponent.end());
  algorithm =
      CreateRsaHashedKeyGenAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256,
                                     modulus_length,
                                     exponent_with_leading_zeros);
  EXPECT_EQ(Status::Success(),
            GenerateKeyPair(
                algorithm, extractable, usage_mask, &public_key, &private_key));
  EXPECT_FALSE(public_key.isNull());
  EXPECT_FALSE(private_key.isNull());
  EXPECT_EQ(blink::WebCryptoKeyTypePublic, public_key.type());
  EXPECT_EQ(blink::WebCryptoKeyTypePrivate, private_key.type());
  EXPECT_TRUE(public_key.extractable());
  EXPECT_EQ(extractable, private_key.extractable());
  EXPECT_EQ(usage_mask, public_key.usages());
  EXPECT_EQ(usage_mask, private_key.usages());

  // Successful WebCryptoAlgorithmIdRsaSsaPkcs1v1_5 key generation (sha1)
  algorithm =
      CreateRsaHashedKeyGenAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha1,
                                     modulus_length,
                                     public_exponent);
  EXPECT_EQ(
      Status::Success(),
      GenerateKeyPair(algorithm, false, usage_mask, &public_key, &private_key));
  EXPECT_FALSE(public_key.isNull());
  EXPECT_FALSE(private_key.isNull());
  EXPECT_EQ(blink::WebCryptoKeyTypePublic, public_key.type());
  EXPECT_EQ(blink::WebCryptoKeyTypePrivate, private_key.type());
  EXPECT_EQ(modulus_length,
            public_key.algorithm().rsaHashedParams()->modulusLengthBits());
  EXPECT_EQ(modulus_length,
            private_key.algorithm().rsaHashedParams()->modulusLengthBits());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha1,
            public_key.algorithm().rsaHashedParams()->hash().id());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha1,
            private_key.algorithm().rsaHashedParams()->hash().id());
  // Even though "extractable" was set to false, the public key remains
  // extractable.
  EXPECT_TRUE(public_key.extractable());
  EXPECT_FALSE(private_key.extractable());
  EXPECT_EQ(usage_mask, public_key.usages());
  EXPECT_EQ(usage_mask, private_key.usages());

  // Exporting a private key as SPKI format doesn't make sense. However this
  // will first fail because the key is not extractable.
  std::vector<uint8_t> output;
  EXPECT_EQ(Status::ErrorKeyNotExtractable(),
            ExportKey(blink::WebCryptoKeyFormatSpki, private_key, &output));

  // Re-generate an extractable private_key and try to export it as SPKI format.
  // This should fail since spki is for public keys.
  EXPECT_EQ(
      Status::Success(),
      GenerateKeyPair(algorithm, true, usage_mask, &public_key, &private_key));
  EXPECT_EQ(Status::ErrorUnexpectedKeyType(),
            ExportKey(blink::WebCryptoKeyFormatSpki, private_key, &output));
}

TEST_F(SharedCryptoTest, GenerateKeyPairRsaBadModulusLength) {
  const unsigned int kBadModulusBits[] = {
      0,
      248,         // Too small.
      257,         // Not a multiple of 8.
      1023,        // Not a multiple of 8.
      0xFFFFFFFF,  // Too big.
      16384 + 8,   // 16384 is the maxmimum length that NSS succeeds for.
  };

  const std::vector<uint8_t> public_exponent = HexStringToBytes("010001");

  for (size_t i = 0; i < arraysize(kBadModulusBits); ++i) {
    const unsigned int modulus_length_bits = kBadModulusBits[i];
    blink::WebCryptoAlgorithm algorithm = CreateRsaHashedKeyGenAlgorithm(
        blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
        blink::WebCryptoAlgorithmIdSha256,
        modulus_length_bits,
        public_exponent);
    bool extractable = true;
    const blink::WebCryptoKeyUsageMask usage_mask = 0;
    blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
    blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();

    EXPECT_EQ(
        Status::ErrorGenerateRsaUnsupportedModulus(),
        GenerateKeyPair(
            algorithm, extractable, usage_mask, &public_key, &private_key));
  }
}

// Try generating RSA key pairs using unsupported public exponents. Only
// exponents of 3 and 65537 are supported. While both OpenSSL and NSS can
// support other values, OpenSSL hangs when given invalid exponents, so use a
// whitelist to validate the parameters.
TEST_F(SharedCryptoTest, GenerateKeyPairRsaBadExponent) {
  const unsigned int modulus_length = 1024;

  const char* const kPublicExponents[] = {
      "11",  // 17 - This is a valid public exponent, but currently disallowed.
      "00",
      "01",
      "02",
      "010000",  // 65536
  };

  for (size_t i = 0; i < arraysize(kPublicExponents); ++i) {
    SCOPED_TRACE(i);
    blink::WebCryptoAlgorithm algorithm = CreateRsaHashedKeyGenAlgorithm(
        blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
        blink::WebCryptoAlgorithmIdSha256,
        modulus_length,
        HexStringToBytes(kPublicExponents[i]));

    blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
    blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();

    EXPECT_EQ(Status::ErrorGenerateKeyPublicExponent(),
              GenerateKeyPair(algorithm, true, 0, &public_key, &private_key));
  }
}

TEST_F(SharedCryptoTest, RsaSsaSignVerifyFailures) {
  if (!SupportsRsaKeyImport())
    return;

  // Import a key pair.
  blink::WebCryptoAlgorithm import_algorithm =
      CreateRsaHashedImportAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha1);
  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();
  ASSERT_NO_FATAL_FAILURE(
      ImportRsaKeyPair(HexStringToBytes(kPublicKeySpkiDerHex),
                       HexStringToBytes(kPrivateKeyPkcs8DerHex),
                       import_algorithm,
                       false,
                       blink::WebCryptoKeyUsageVerify,
                       blink::WebCryptoKeyUsageSign,
                       &public_key,
                       &private_key));

  blink::WebCryptoAlgorithm algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5);

  std::vector<uint8_t> signature;
  bool signature_match;

  // Compute a signature.
  const std::vector<uint8_t> data = HexStringToBytes("010203040506070809");
  ASSERT_EQ(Status::Success(),
            Sign(algorithm, private_key, CryptoData(data), &signature));

  // Ensure truncated signature does not verify by passing one less byte.
  EXPECT_EQ(
      Status::Success(),
      Verify(algorithm,
             public_key,
             CryptoData(vector_as_array(&signature), signature.size() - 1),
             CryptoData(data),
             &signature_match));
  EXPECT_FALSE(signature_match);

  // Ensure truncated signature does not verify by passing no bytes.
  EXPECT_EQ(Status::Success(),
            Verify(algorithm,
                   public_key,
                   CryptoData(),
                   CryptoData(data),
                   &signature_match));
  EXPECT_FALSE(signature_match);

  // Ensure corrupted signature does not verify.
  std::vector<uint8_t> corrupt_sig = signature;
  corrupt_sig[corrupt_sig.size() / 2] ^= 0x1;
  EXPECT_EQ(Status::Success(),
            Verify(algorithm,
                   public_key,
                   CryptoData(corrupt_sig),
                   CryptoData(data),
                   &signature_match));
  EXPECT_FALSE(signature_match);

  // Ensure signatures that are greater than the modulus size fail.
  const unsigned int long_message_size_bytes = 1024;
  DCHECK_GT(long_message_size_bytes, kModulusLengthBits / 8);
  const unsigned char kLongSignature[long_message_size_bytes] = {0};
  EXPECT_EQ(Status::Success(),
            Verify(algorithm,
                   public_key,
                   CryptoData(kLongSignature, sizeof(kLongSignature)),
                   CryptoData(data),
                   &signature_match));
  EXPECT_FALSE(signature_match);

  // Ensure that signing and verifying with an incompatible algorithm fails.
  algorithm = CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaOaep);

  EXPECT_EQ(Status::ErrorUnexpected(),
            Sign(algorithm, private_key, CryptoData(data), &signature));
  EXPECT_EQ(Status::ErrorUnexpected(),
            Verify(algorithm,
                   public_key,
                   CryptoData(signature),
                   CryptoData(data),
                   &signature_match));

  // Some crypto libraries (NSS) can automatically select the RSA SSA inner hash
  // based solely on the contents of the input signature data. In the Web Crypto
  // implementation, the inner hash should be specified uniquely by the key
  // algorithm parameter. To validate this behavior, call Verify with a computed
  // signature that used one hash type (SHA-1), but pass in a key with a
  // different inner hash type (SHA-256). If the hash type is determined by the
  // signature itself (undesired), the verify will pass, while if the hash type
  // is specified by the key algorithm (desired), the verify will fail.

  // Compute a signature using SHA-1 as the inner hash.
  EXPECT_EQ(Status::Success(),
            Sign(CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5),
                 private_key,
                 CryptoData(data),
                 &signature));

  blink::WebCryptoKey public_key_256 = blink::WebCryptoKey::createNull();
  EXPECT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatSpki,
                      CryptoData(HexStringToBytes(kPublicKeySpkiDerHex)),
                      CreateRsaHashedImportAlgorithm(
                          blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                          blink::WebCryptoAlgorithmIdSha256),
                      true,
                      blink::WebCryptoKeyUsageVerify,
                      &public_key_256));

  // Now verify using an algorithm whose inner hash is SHA-256, not SHA-1. The
  // signature should not verify.
  // NOTE: public_key was produced by generateKey, and so its associated
  // algorithm has WebCryptoRsaKeyGenParams and not WebCryptoRsaSsaParams. Thus
  // it has no inner hash to conflict with the input algorithm.
  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha1,
            private_key.algorithm().rsaHashedParams()->hash().id());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha256,
            public_key_256.algorithm().rsaHashedParams()->hash().id());

  bool is_match;
  EXPECT_EQ(Status::Success(),
            Verify(CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5),
                   public_key_256,
                   CryptoData(signature),
                   CryptoData(data),
                   &is_match));
  EXPECT_FALSE(is_match);
}

TEST_F(SharedCryptoTest, RsaSignVerifyKnownAnswer) {
  if (!SupportsRsaKeyImport())
    return;

  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("pkcs1v15_sign.json", &tests));

  // Import the key pair.
  blink::WebCryptoAlgorithm import_algorithm =
      CreateRsaHashedImportAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha1);
  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();
  ASSERT_NO_FATAL_FAILURE(
      ImportRsaKeyPair(HexStringToBytes(kPublicKeySpkiDerHex),
                       HexStringToBytes(kPrivateKeyPkcs8DerHex),
                       import_algorithm,
                       false,
                       blink::WebCryptoKeyUsageVerify,
                       blink::WebCryptoKeyUsageSign,
                       &public_key,
                       &private_key));

  blink::WebCryptoAlgorithm algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5);

  // Validate the signatures are computed and verified as expected.
  std::vector<uint8_t> signature;
  for (size_t test_index = 0; test_index < tests->GetSize(); ++test_index) {
    SCOPED_TRACE(test_index);

    base::DictionaryValue* test;
    ASSERT_TRUE(tests->GetDictionary(test_index, &test));

    std::vector<uint8_t> test_message =
        GetBytesFromHexString(test, "message_hex");
    std::vector<uint8_t> test_signature =
        GetBytesFromHexString(test, "signature_hex");

    signature.clear();
    ASSERT_EQ(
        Status::Success(),
        Sign(algorithm, private_key, CryptoData(test_message), &signature));
    EXPECT_BYTES_EQ(test_signature, signature);

    bool is_match = false;
    ASSERT_EQ(Status::Success(),
              Verify(algorithm,
                     public_key,
                     CryptoData(test_signature),
                     CryptoData(test_message),
                     &is_match));
    EXPECT_TRUE(is_match);
  }
}

TEST_F(SharedCryptoTest, AesKwKeyImport) {
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  blink::WebCryptoAlgorithm algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);

  // Import a 128-bit Key Encryption Key (KEK)
  std::string key_raw_hex_in = "025a8cf3f08b4f6c5f33bbc76a471939";
  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(HexStringToBytes(key_raw_hex_in)),
                      algorithm,
                      true,
                      blink::WebCryptoKeyUsageWrapKey,
                      &key));
  std::vector<uint8_t> key_raw_out;
  EXPECT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatRaw, key, &key_raw_out));
  EXPECT_BYTES_EQ_HEX(key_raw_hex_in, key_raw_out);

  // Import a 192-bit KEK
  key_raw_hex_in = "c0192c6466b2370decbb62b2cfef4384544ffeb4d2fbc103";
  ASSERT_EQ(Status::ErrorAes192BitUnsupported(),
            ImportKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(HexStringToBytes(key_raw_hex_in)),
                      algorithm,
                      true,
                      blink::WebCryptoKeyUsageWrapKey,
                      &key));

  // Import a 256-bit Key Encryption Key (KEK)
  key_raw_hex_in =
      "e11fe66380d90fa9ebefb74e0478e78f95664d0c67ca20ce4a0b5842863ac46f";
  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(HexStringToBytes(key_raw_hex_in)),
                      algorithm,
                      true,
                      blink::WebCryptoKeyUsageWrapKey,
                      &key));
  EXPECT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatRaw, key, &key_raw_out));
  EXPECT_BYTES_EQ_HEX(key_raw_hex_in, key_raw_out);

  // Fail import of 0 length key
  EXPECT_EQ(Status::ErrorImportAesKeyLength(),
            ImportKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(HexStringToBytes("")),
                      algorithm,
                      true,
                      blink::WebCryptoKeyUsageWrapKey,
                      &key));

  // Fail import of 124-bit KEK
  key_raw_hex_in = "3e4566a2bdaa10cb68134fa66c15ddb";
  EXPECT_EQ(Status::ErrorImportAesKeyLength(),
            ImportKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(HexStringToBytes(key_raw_hex_in)),
                      algorithm,
                      true,
                      blink::WebCryptoKeyUsageWrapKey,
                      &key));

  // Fail import of 200-bit KEK
  key_raw_hex_in = "0a1d88608a5ad9fec64f1ada269ebab4baa2feeb8d95638c0e";
  EXPECT_EQ(Status::ErrorImportAesKeyLength(),
            ImportKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(HexStringToBytes(key_raw_hex_in)),
                      algorithm,
                      true,
                      blink::WebCryptoKeyUsageWrapKey,
                      &key));

  // Fail import of 260-bit KEK
  key_raw_hex_in =
      "72d4e475ff34215416c9ad9c8281247a4d730c5f275ac23f376e73e3bce8d7d5a";
  EXPECT_EQ(Status::ErrorImportAesKeyLength(),
            ImportKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(HexStringToBytes(key_raw_hex_in)),
                      algorithm,
                      true,
                      blink::WebCryptoKeyUsageWrapKey,
                      &key));
}

TEST_F(SharedCryptoTest, UnwrapFailures) {
  // This test exercises the code path common to all unwrap operations.
  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("aes_kw.json", &tests));
  base::DictionaryValue* test;
  ASSERT_TRUE(tests->GetDictionary(0, &test));
  const std::vector<uint8_t> test_kek = GetBytesFromHexString(test, "kek");
  const std::vector<uint8_t> test_ciphertext =
      GetBytesFromHexString(test, "ciphertext");

  blink::WebCryptoKey unwrapped_key = blink::WebCryptoKey::createNull();

  // Using a wrapping algorithm that does not match the wrapping key algorithm
  // should fail.
  blink::WebCryptoKey wrapping_key = ImportSecretKeyFromRaw(
      test_kek,
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw),
      blink::WebCryptoKeyUsageUnwrapKey);
  EXPECT_EQ(
      Status::ErrorUnexpected(),
      UnwrapKey(blink::WebCryptoKeyFormatRaw,
                CryptoData(test_ciphertext),
                wrapping_key,
                webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
                webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
                true,
                blink::WebCryptoKeyUsageEncrypt,
                &unwrapped_key));
}

TEST_F(SharedCryptoTest, AesKwRawSymkeyWrapUnwrapKnownAnswer) {
  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("aes_kw.json", &tests));

  for (size_t test_index = 0; test_index < tests->GetSize(); ++test_index) {
    SCOPED_TRACE(test_index);
    base::DictionaryValue* test;
    ASSERT_TRUE(tests->GetDictionary(test_index, &test));
    const std::vector<uint8_t> test_kek = GetBytesFromHexString(test, "kek");
    const std::vector<uint8_t> test_key = GetBytesFromHexString(test, "key");
    const std::vector<uint8_t> test_ciphertext =
        GetBytesFromHexString(test, "ciphertext");
    const blink::WebCryptoAlgorithm wrapping_algorithm =
        webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);

    // Import the wrapping key.
    blink::WebCryptoKey wrapping_key = ImportSecretKeyFromRaw(
        test_kek,
        wrapping_algorithm,
        blink::WebCryptoKeyUsageWrapKey | blink::WebCryptoKeyUsageUnwrapKey);

    // Import the key to be wrapped.
    blink::WebCryptoKey key = ImportSecretKeyFromRaw(
        test_key,
        CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha1),
        blink::WebCryptoKeyUsageSign);

    // Wrap the key and verify the ciphertext result against the known answer.
    std::vector<uint8_t> wrapped_key;
    ASSERT_EQ(Status::Success(),
              WrapKey(blink::WebCryptoKeyFormatRaw,
                      key,
                      wrapping_key,
                      wrapping_algorithm,
                      &wrapped_key));
    EXPECT_BYTES_EQ(test_ciphertext, wrapped_key);

    // Unwrap the known ciphertext to get a new test_key.
    blink::WebCryptoKey unwrapped_key = blink::WebCryptoKey::createNull();
    ASSERT_EQ(
        Status::Success(),
        UnwrapKey(blink::WebCryptoKeyFormatRaw,
                  CryptoData(test_ciphertext),
                  wrapping_key,
                  wrapping_algorithm,
                  CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha1),
                  true,
                  blink::WebCryptoKeyUsageSign,
                  &unwrapped_key));
    EXPECT_FALSE(key.isNull());
    EXPECT_TRUE(key.handle());
    EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
    EXPECT_EQ(blink::WebCryptoAlgorithmIdHmac, key.algorithm().id());
    EXPECT_EQ(true, key.extractable());
    EXPECT_EQ(blink::WebCryptoKeyUsageSign, key.usages());

    // Export the new key and compare its raw bytes with the original known key.
    std::vector<uint8_t> raw_key;
    EXPECT_EQ(Status::Success(),
              ExportKey(blink::WebCryptoKeyFormatRaw, unwrapped_key, &raw_key));
    EXPECT_BYTES_EQ(test_key, raw_key);
  }
}

// Unwrap a HMAC key using AES-KW, and then try doing a sign/verify with the
// unwrapped key
TEST_F(SharedCryptoTest, AesKwRawSymkeyUnwrapSignVerifyHmac) {
  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("aes_kw.json", &tests));

  base::DictionaryValue* test;
  ASSERT_TRUE(tests->GetDictionary(0, &test));
  const std::vector<uint8_t> test_kek = GetBytesFromHexString(test, "kek");
  const std::vector<uint8_t> test_ciphertext =
      GetBytesFromHexString(test, "ciphertext");
  const blink::WebCryptoAlgorithm wrapping_algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);

  // Import the wrapping key.
  blink::WebCryptoKey wrapping_key = ImportSecretKeyFromRaw(
      test_kek, wrapping_algorithm, blink::WebCryptoKeyUsageUnwrapKey);

  // Unwrap the known ciphertext.
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(
      Status::Success(),
      UnwrapKey(blink::WebCryptoKeyFormatRaw,
                CryptoData(test_ciphertext),
                wrapping_key,
                wrapping_algorithm,
                CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha1),
                false,
                blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify,
                &key));

  EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdHmac, key.algorithm().id());
  EXPECT_FALSE(key.extractable());
  EXPECT_EQ(blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify,
            key.usages());

  // Sign an empty message and ensure it is verified.
  std::vector<uint8_t> test_message;
  std::vector<uint8_t> signature;

  ASSERT_EQ(Status::Success(),
            Sign(CreateAlgorithm(blink::WebCryptoAlgorithmIdHmac),
                 key,
                 CryptoData(test_message),
                 &signature));

  EXPECT_GT(signature.size(), 0u);

  bool verify_result;
  ASSERT_EQ(Status::Success(),
            Verify(CreateAlgorithm(blink::WebCryptoAlgorithmIdHmac),
                   key,
                   CryptoData(signature),
                   CryptoData(test_message),
                   &verify_result));
}

TEST_F(SharedCryptoTest, AesKwRawSymkeyWrapUnwrapErrors) {
  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("aes_kw.json", &tests));
  base::DictionaryValue* test;
  // Use 256 bits of data with a 256-bit KEK
  ASSERT_TRUE(tests->GetDictionary(3, &test));
  const std::vector<uint8_t> test_kek = GetBytesFromHexString(test, "kek");
  const std::vector<uint8_t> test_key = GetBytesFromHexString(test, "key");
  const std::vector<uint8_t> test_ciphertext =
      GetBytesFromHexString(test, "ciphertext");
  const blink::WebCryptoAlgorithm wrapping_algorithm =
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);
  const blink::WebCryptoAlgorithm key_algorithm =
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc);
  // Import the wrapping key.
  blink::WebCryptoKey wrapping_key = ImportSecretKeyFromRaw(
      test_kek,
      wrapping_algorithm,
      blink::WebCryptoKeyUsageWrapKey | blink::WebCryptoKeyUsageUnwrapKey);
  // Import the key to be wrapped.
  blink::WebCryptoKey key = ImportSecretKeyFromRaw(
      test_key,
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
      blink::WebCryptoKeyUsageEncrypt);

  // Unwrap with wrapped data too small must fail.
  const std::vector<uint8_t> small_data(test_ciphertext.begin(),
                                        test_ciphertext.begin() + 23);
  blink::WebCryptoKey unwrapped_key = blink::WebCryptoKey::createNull();
  EXPECT_EQ(Status::ErrorDataTooSmall(),
            UnwrapKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(small_data),
                      wrapping_key,
                      wrapping_algorithm,
                      key_algorithm,
                      true,
                      blink::WebCryptoKeyUsageEncrypt,
                      &unwrapped_key));

  // Unwrap with wrapped data size not a multiple of 8 bytes must fail.
  const std::vector<uint8_t> unaligned_data(test_ciphertext.begin(),
                                            test_ciphertext.end() - 2);
  EXPECT_EQ(Status::ErrorInvalidAesKwDataLength(),
            UnwrapKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(unaligned_data),
                      wrapping_key,
                      wrapping_algorithm,
                      key_algorithm,
                      true,
                      blink::WebCryptoKeyUsageEncrypt,
                      &unwrapped_key));
}

TEST_F(SharedCryptoTest, AesKwRawSymkeyUnwrapCorruptData) {
  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("aes_kw.json", &tests));
  base::DictionaryValue* test;
  // Use 256 bits of data with a 256-bit KEK
  ASSERT_TRUE(tests->GetDictionary(3, &test));
  const std::vector<uint8_t> test_kek = GetBytesFromHexString(test, "kek");
  const std::vector<uint8_t> test_key = GetBytesFromHexString(test, "key");
  const std::vector<uint8_t> test_ciphertext =
      GetBytesFromHexString(test, "ciphertext");
  const blink::WebCryptoAlgorithm wrapping_algorithm =
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);

  // Import the wrapping key.
  blink::WebCryptoKey wrapping_key = ImportSecretKeyFromRaw(
      test_kek,
      wrapping_algorithm,
      blink::WebCryptoKeyUsageWrapKey | blink::WebCryptoKeyUsageUnwrapKey);

  // Unwrap of a corrupted version of the known ciphertext should fail, due to
  // AES-KW's built-in integrity check.
  blink::WebCryptoKey unwrapped_key = blink::WebCryptoKey::createNull();
  EXPECT_EQ(
      Status::OperationError(),
      UnwrapKey(blink::WebCryptoKeyFormatRaw,
                CryptoData(Corrupted(test_ciphertext)),
                wrapping_key,
                wrapping_algorithm,
                webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
                true,
                blink::WebCryptoKeyUsageEncrypt,
                &unwrapped_key));
}

TEST_F(SharedCryptoTest, AesKwJwkSymkeyUnwrapKnownData) {
  // The following data lists a known HMAC SHA-256 key, then a JWK
  // representation of this key which was encrypted ("wrapped") using AES-KW and
  // the following wrapping key.
  // For reference, the intermediate clear JWK is
  // {"alg":"HS256","ext":true,"k":<b64urlKey>,"key_ops":["verify"],"kty":"oct"}
  // (Not shown is space padding to ensure the cleartext meets the size
  // requirements of the AES-KW algorithm.)
  const std::vector<uint8_t> key_data = HexStringToBytes(
      "000102030405060708090A0B0C0D0E0F000102030405060708090A0B0C0D0E0F");
  const std::vector<uint8_t> wrapped_key_data = HexStringToBytes(
      "14E6380B35FDC5B72E1994764B6CB7BFDD64E7832894356AAEE6C3768FC3D0F115E6B0"
      "6729756225F999AA99FDF81FD6A359F1576D3D23DE6CB69C3937054EB497AC1E8C38D5"
      "5E01B9783A20C8D930020932CF25926103002213D0FC37279888154FEBCEDF31832158"
      "97938C5CFE5B10B4254D0C399F39D0");
  const std::vector<uint8_t> wrapping_key_data =
      HexStringToBytes("000102030405060708090A0B0C0D0E0F");
  const blink::WebCryptoAlgorithm wrapping_algorithm =
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);

  // Import the wrapping key.
  blink::WebCryptoKey wrapping_key = ImportSecretKeyFromRaw(
      wrapping_key_data, wrapping_algorithm, blink::WebCryptoKeyUsageUnwrapKey);

  // Unwrap the known wrapped key data to produce a new key
  blink::WebCryptoKey unwrapped_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(
      Status::Success(),
      UnwrapKey(blink::WebCryptoKeyFormatJwk,
                CryptoData(wrapped_key_data),
                wrapping_key,
                wrapping_algorithm,
                CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha256),
                true,
                blink::WebCryptoKeyUsageVerify,
                &unwrapped_key));

  // Validate the new key's attributes.
  EXPECT_FALSE(unwrapped_key.isNull());
  EXPECT_TRUE(unwrapped_key.handle());
  EXPECT_EQ(blink::WebCryptoKeyTypeSecret, unwrapped_key.type());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdHmac, unwrapped_key.algorithm().id());
  EXPECT_EQ(blink::WebCryptoAlgorithmIdSha256,
            unwrapped_key.algorithm().hmacParams()->hash().id());
  EXPECT_EQ(256u, unwrapped_key.algorithm().hmacParams()->lengthBits());
  EXPECT_EQ(true, unwrapped_key.extractable());
  EXPECT_EQ(blink::WebCryptoKeyUsageVerify, unwrapped_key.usages());

  // Export the new key's raw data and compare to the known original.
  std::vector<uint8_t> raw_key;
  EXPECT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatRaw, unwrapped_key, &raw_key));
  EXPECT_BYTES_EQ(key_data, raw_key);
}

// TODO(eroman):
//   * Test decryption when the tag length exceeds input size
//   * Test decryption with empty input
//   * Test decryption with tag length of 0.
TEST_F(SharedCryptoTest, AesGcmSampleSets) {
  // Some Linux test runners may not have a new enough version of NSS.
  if (!SupportsAesGcm()) {
    LOG(WARNING) << "AES GCM not supported, skipping tests";
    return;
  }

  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("aes_gcm.json", &tests));

  // Note that WebCrypto appends the authentication tag to the ciphertext.
  for (size_t test_index = 0; test_index < tests->GetSize(); ++test_index) {
    SCOPED_TRACE(test_index);
    base::DictionaryValue* test;
    ASSERT_TRUE(tests->GetDictionary(test_index, &test));

    const std::vector<uint8_t> test_key = GetBytesFromHexString(test, "key");
    const std::vector<uint8_t> test_iv = GetBytesFromHexString(test, "iv");
    const std::vector<uint8_t> test_additional_data =
        GetBytesFromHexString(test, "additional_data");
    const std::vector<uint8_t> test_plain_text =
        GetBytesFromHexString(test, "plain_text");
    const std::vector<uint8_t> test_authentication_tag =
        GetBytesFromHexString(test, "authentication_tag");
    const unsigned int test_tag_size_bits = test_authentication_tag.size() * 8;
    const std::vector<uint8_t> test_cipher_text =
        GetBytesFromHexString(test, "cipher_text");

    blink::WebCryptoKey key = ImportSecretKeyFromRaw(
        test_key,
        CreateAlgorithm(blink::WebCryptoAlgorithmIdAesGcm),
        blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageDecrypt);

    // Verify exported raw key is identical to the imported data
    std::vector<uint8_t> raw_key;
    EXPECT_EQ(Status::Success(),
              ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));

    EXPECT_BYTES_EQ(test_key, raw_key);

    // Test encryption.
    std::vector<uint8_t> cipher_text;
    std::vector<uint8_t> authentication_tag;
    EXPECT_EQ(Status::Success(),
              AesGcmEncrypt(key,
                            test_iv,
                            test_additional_data,
                            test_tag_size_bits,
                            test_plain_text,
                            &cipher_text,
                            &authentication_tag));

    EXPECT_BYTES_EQ(test_cipher_text, cipher_text);
    EXPECT_BYTES_EQ(test_authentication_tag, authentication_tag);

    // Test decryption.
    std::vector<uint8_t> plain_text;
    EXPECT_EQ(Status::Success(),
              AesGcmDecrypt(key,
                            test_iv,
                            test_additional_data,
                            test_tag_size_bits,
                            test_cipher_text,
                            test_authentication_tag,
                            &plain_text));
    EXPECT_BYTES_EQ(test_plain_text, plain_text);

    // Decryption should fail if any of the inputs are tampered with.
    EXPECT_EQ(Status::OperationError(),
              AesGcmDecrypt(key,
                            Corrupted(test_iv),
                            test_additional_data,
                            test_tag_size_bits,
                            test_cipher_text,
                            test_authentication_tag,
                            &plain_text));
    EXPECT_EQ(Status::OperationError(),
              AesGcmDecrypt(key,
                            test_iv,
                            Corrupted(test_additional_data),
                            test_tag_size_bits,
                            test_cipher_text,
                            test_authentication_tag,
                            &plain_text));
    EXPECT_EQ(Status::OperationError(),
              AesGcmDecrypt(key,
                            test_iv,
                            test_additional_data,
                            test_tag_size_bits,
                            Corrupted(test_cipher_text),
                            test_authentication_tag,
                            &plain_text));
    EXPECT_EQ(Status::OperationError(),
              AesGcmDecrypt(key,
                            test_iv,
                            test_additional_data,
                            test_tag_size_bits,
                            test_cipher_text,
                            Corrupted(test_authentication_tag),
                            &plain_text));

    // Try different incorrect tag lengths
    uint8_t kAlternateTagLengths[] = {0, 8, 96, 120, 128, 160, 255};
    for (size_t tag_i = 0; tag_i < arraysize(kAlternateTagLengths); ++tag_i) {
      unsigned int wrong_tag_size_bits = kAlternateTagLengths[tag_i];
      if (test_tag_size_bits == wrong_tag_size_bits)
        continue;
      EXPECT_NE(Status::Success(),
                AesGcmDecrypt(key,
                              test_iv,
                              test_additional_data,
                              wrong_tag_size_bits,
                              test_cipher_text,
                              test_authentication_tag,
                              &plain_text));
    }
  }
}

// AES 192-bit is not allowed: http://crbug.com/381829
TEST_F(SharedCryptoTest, ImportAesCbc192Raw) {
  std::vector<uint8_t> key_raw(24, 0);
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  Status status = ImportKey(blink::WebCryptoKeyFormatRaw,
                            CryptoData(key_raw),
                            CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
                            true,
                            blink::WebCryptoKeyUsageEncrypt,
                            &key);
  ASSERT_EQ(Status::ErrorAes192BitUnsupported(), status);
}

// AES 192-bit is not allowed: http://crbug.com/381829
TEST_F(SharedCryptoTest, ImportAesCbc192Jwk) {
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();

  base::DictionaryValue dict;
  dict.SetString("kty", "oct");
  dict.SetString("alg", "A192CBC");
  dict.SetString("k", "YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh");

  EXPECT_EQ(
      Status::ErrorAes192BitUnsupported(),
      ImportKeyJwkFromDict(dict,
                           CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
                           false,
                           blink::WebCryptoKeyUsageEncrypt,
                           &key));
}

// AES 192-bit is not allowed: http://crbug.com/381829
TEST_F(SharedCryptoTest, GenerateAesCbc192) {
  blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
  Status status = GenerateSecretKey(CreateAesCbcKeyGenAlgorithm(192),
                                    true,
                                    blink::WebCryptoKeyUsageEncrypt,
                                    &key);
  ASSERT_EQ(Status::ErrorAes192BitUnsupported(), status);
}

// AES 192-bit is not allowed: http://crbug.com/381829
TEST_F(SharedCryptoTest, UnwrapAesCbc192) {
  std::vector<uint8_t> wrapping_key_data(16, 0);
  std::vector<uint8_t> wrapped_key = HexStringToBytes(
      "1A07ACAB6C906E50883173C29441DB1DE91D34F45C435B5F99C822867FB3956F");

  blink::WebCryptoKey wrapping_key =
      ImportSecretKeyFromRaw(wrapping_key_data,
                             CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw),
                             blink::WebCryptoKeyUsageUnwrapKey);

  blink::WebCryptoKey unwrapped_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::ErrorAes192BitUnsupported(),
            UnwrapKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(wrapped_key),
                      wrapping_key,
                      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw),
                      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
                      true,
                      blink::WebCryptoKeyUsageEncrypt,
                      &unwrapped_key));
}

class SharedCryptoRsaOaepTest : public ::testing::Test {
 public:
  scoped_ptr<base::DictionaryValue> CreatePublicKeyJwkDict() {
    scoped_ptr<base::DictionaryValue> jwk(new base::DictionaryValue());
    jwk->SetString("kty", "RSA");
    jwk->SetString("n",
                   Base64EncodeUrlSafe(HexStringToBytes(kPublicKeyModulusHex)));
    jwk->SetString(
        "e", Base64EncodeUrlSafe(HexStringToBytes(kPublicKeyExponentHex)));
    return jwk.Pass();
  }
};

// Import a PKCS#8 private key that uses RSAPrivateKey with the
// id-rsaEncryption OID.
TEST_F(SharedCryptoRsaOaepTest, ImportPkcs8WithRsaEncryption) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatPkcs8,
                      CryptoData(HexStringToBytes(kPrivateKeyPkcs8DerHex)),
                      CreateRsaHashedImportAlgorithm(
                          blink::WebCryptoAlgorithmIdRsaOaep,
                          blink::WebCryptoAlgorithmIdSha1),
                      true,
                      blink::WebCryptoKeyUsageDecrypt,
                      &private_key));
}

TEST_F(SharedCryptoRsaOaepTest, ImportPublicJwkWithNoAlg) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  scoped_ptr<base::DictionaryValue> jwk(CreatePublicKeyJwkDict());

  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKeyJwkFromDict(*jwk.get(),
                                 CreateRsaHashedImportAlgorithm(
                                     blink::WebCryptoAlgorithmIdRsaOaep,
                                     blink::WebCryptoAlgorithmIdSha1),
                                 true,
                                 blink::WebCryptoKeyUsageEncrypt,
                                 &public_key));
}

TEST_F(SharedCryptoRsaOaepTest, ImportPublicJwkWithMatchingAlg) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  scoped_ptr<base::DictionaryValue> jwk(CreatePublicKeyJwkDict());
  jwk->SetString("alg", "RSA-OAEP");

  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKeyJwkFromDict(*jwk.get(),
                                 CreateRsaHashedImportAlgorithm(
                                     blink::WebCryptoAlgorithmIdRsaOaep,
                                     blink::WebCryptoAlgorithmIdSha1),
                                 true,
                                 blink::WebCryptoKeyUsageEncrypt,
                                 &public_key));
}

TEST_F(SharedCryptoRsaOaepTest, ImportPublicJwkWithMismatchedAlgFails) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  scoped_ptr<base::DictionaryValue> jwk(CreatePublicKeyJwkDict());
  jwk->SetString("alg", "RSA-OAEP-512");

  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::ErrorJwkAlgorithmInconsistent(),
            ImportKeyJwkFromDict(*jwk.get(),
                                 CreateRsaHashedImportAlgorithm(
                                     blink::WebCryptoAlgorithmIdRsaOaep,
                                     blink::WebCryptoAlgorithmIdSha1),
                                 true,
                                 blink::WebCryptoKeyUsageEncrypt,
                                 &public_key));
}

TEST_F(SharedCryptoRsaOaepTest, ImportPublicJwkWithMismatchedTypeFails) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  scoped_ptr<base::DictionaryValue> jwk(CreatePublicKeyJwkDict());
  jwk->SetString("kty", "oct");
  jwk->SetString("alg", "RSA-OAEP");

  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::ErrorJwkUnexpectedKty("RSA"),
            ImportKeyJwkFromDict(*jwk.get(),
                                 CreateRsaHashedImportAlgorithm(
                                     blink::WebCryptoAlgorithmIdRsaOaep,
                                     blink::WebCryptoAlgorithmIdSha1),
                                 true,
                                 blink::WebCryptoKeyUsageEncrypt,
                                 &public_key));
}

TEST_F(SharedCryptoRsaOaepTest, ExportPublicJwk) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  struct TestData {
    blink::WebCryptoAlgorithmId hash_alg;
    const char* expected_jwk_alg;
  } kTestData[] = {{blink::WebCryptoAlgorithmIdSha1, "RSA-OAEP"},
                   {blink::WebCryptoAlgorithmIdSha256, "RSA-OAEP-256"},
                   {blink::WebCryptoAlgorithmIdSha384, "RSA-OAEP-384"},
                   {blink::WebCryptoAlgorithmIdSha512, "RSA-OAEP-512"}};
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTestData); ++i) {
    const TestData& test_data = kTestData[i];
    SCOPED_TRACE(test_data.expected_jwk_alg);

    scoped_ptr<base::DictionaryValue> jwk(CreatePublicKeyJwkDict());
    jwk->SetString("alg", test_data.expected_jwk_alg);

    // Import the key in a known-good format
    blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
    ASSERT_EQ(Status::Success(),
              ImportKeyJwkFromDict(
                  *jwk.get(),
                  CreateRsaHashedImportAlgorithm(
                      blink::WebCryptoAlgorithmIdRsaOaep, test_data.hash_alg),
                  true,
                  blink::WebCryptoKeyUsageEncrypt,
                  &public_key));

    // Now export the key as JWK and verify its contents
    std::vector<uint8_t> jwk_data;
    ASSERT_EQ(Status::Success(),
              ExportKey(blink::WebCryptoKeyFormatJwk, public_key, &jwk_data));
    EXPECT_TRUE(VerifyPublicJwk(jwk_data,
                                test_data.expected_jwk_alg,
                                kPublicKeyModulusHex,
                                kPublicKeyExponentHex,
                                blink::WebCryptoKeyUsageEncrypt));
  }
}

TEST_F(SharedCryptoRsaOaepTest, EncryptDecryptKnownAnswerTest) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  scoped_ptr<base::ListValue> tests;
  ASSERT_TRUE(ReadJsonTestFileToList("rsa_oaep.json", &tests));

  for (size_t test_index = 0; test_index < tests->GetSize(); ++test_index) {
    SCOPED_TRACE(test_index);

    base::DictionaryValue* test = NULL;
    ASSERT_TRUE(tests->GetDictionary(test_index, &test));

    blink::WebCryptoAlgorithm digest_algorithm =
        GetDigestAlgorithm(test, "hash");
    ASSERT_FALSE(digest_algorithm.isNull());
    std::vector<uint8_t> public_key_der =
        GetBytesFromHexString(test, "public_key");
    std::vector<uint8_t> private_key_der =
        GetBytesFromHexString(test, "private_key");
    std::vector<uint8_t> ciphertext = GetBytesFromHexString(test, "ciphertext");
    std::vector<uint8_t> plaintext = GetBytesFromHexString(test, "plaintext");
    std::vector<uint8_t> label = GetBytesFromHexString(test, "label");

    blink::WebCryptoAlgorithm import_algorithm = CreateRsaHashedImportAlgorithm(
        blink::WebCryptoAlgorithmIdRsaOaep, digest_algorithm.id());
    blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
    blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();

    ASSERT_NO_FATAL_FAILURE(ImportRsaKeyPair(public_key_der,
                                             private_key_der,
                                             import_algorithm,
                                             false,
                                             blink::WebCryptoKeyUsageEncrypt,
                                             blink::WebCryptoKeyUsageDecrypt,
                                             &public_key,
                                             &private_key));

    blink::WebCryptoAlgorithm op_algorithm = CreateRsaOaepAlgorithm(label);
    std::vector<uint8_t> decrypted_data;
    ASSERT_EQ(Status::Success(),
              Decrypt(op_algorithm,
                      private_key,
                      CryptoData(ciphertext),
                      &decrypted_data));
    EXPECT_BYTES_EQ(plaintext, decrypted_data);
    std::vector<uint8_t> encrypted_data;
    ASSERT_EQ(
        Status::Success(),
        Encrypt(
            op_algorithm, public_key, CryptoData(plaintext), &encrypted_data));
    std::vector<uint8_t> redecrypted_data;
    ASSERT_EQ(Status::Success(),
              Decrypt(op_algorithm,
                      private_key,
                      CryptoData(encrypted_data),
                      &redecrypted_data));
    EXPECT_BYTES_EQ(plaintext, redecrypted_data);
  }
}

TEST_F(SharedCryptoRsaOaepTest, EncryptWithLargeMessageFails) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  const blink::WebCryptoAlgorithmId kHash = blink::WebCryptoAlgorithmIdSha1;
  const size_t kHashSize = 20;

  scoped_ptr<base::DictionaryValue> jwk(CreatePublicKeyJwkDict());

  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKeyJwkFromDict(*jwk.get(),
                                 CreateRsaHashedImportAlgorithm(
                                     blink::WebCryptoAlgorithmIdRsaOaep, kHash),
                                 true,
                                 blink::WebCryptoKeyUsageEncrypt,
                                 &public_key));

  // The maximum size of an encrypted message is:
  //   modulus length
  //   - 1 (leading octet)
  //   - hash size (maskedSeed)
  //   - hash size (lHash portion of maskedDB)
  //   - 1 (at least one octet for the padding string)
  size_t kMaxMessageSize = (kModulusLengthBits / 8) - 2 - (2 * kHashSize);

  // The label has no influence on the maximum message size. For simplicity,
  // use the empty string.
  std::vector<uint8_t> label;
  blink::WebCryptoAlgorithm op_algorithm = CreateRsaOaepAlgorithm(label);

  // Test that a message just before the boundary succeeds.
  std::string large_message;
  large_message.resize(kMaxMessageSize - 1, 'A');

  std::vector<uint8_t> ciphertext;
  ASSERT_EQ(
      Status::Success(),
      Encrypt(
          op_algorithm, public_key, CryptoData(large_message), &ciphertext));

  // Test that a message at the boundary succeeds.
  large_message.resize(kMaxMessageSize, 'A');
  ciphertext.clear();

  ASSERT_EQ(
      Status::Success(),
      Encrypt(
          op_algorithm, public_key, CryptoData(large_message), &ciphertext));

  // Test that a message greater than the largest size fails.
  large_message.resize(kMaxMessageSize + 1, 'A');
  ciphertext.clear();

  ASSERT_EQ(
      Status::OperationError(),
      Encrypt(
          op_algorithm, public_key, CryptoData(large_message), &ciphertext));
}

// Ensures that if the selected hash algorithm for the RSA-OAEP message is too
// large, then it is rejected, independent of the actual message to be
// encrypted.
// For example, a 1024-bit RSA key is too small to accomodate a message that
// uses OAEP with SHA-512, since it requires 1040 bits to encode
// (2 * hash size + 2 padding bytes).
TEST_F(SharedCryptoRsaOaepTest, EncryptWithLargeDigestFails) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  const blink::WebCryptoAlgorithmId kHash = blink::WebCryptoAlgorithmIdSha512;

  scoped_ptr<base::DictionaryValue> jwk(CreatePublicKeyJwkDict());

  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKeyJwkFromDict(*jwk.get(),
                                 CreateRsaHashedImportAlgorithm(
                                     blink::WebCryptoAlgorithmIdRsaOaep, kHash),
                                 true,
                                 blink::WebCryptoKeyUsageEncrypt,
                                 &public_key));

  // The label has no influence on the maximum message size. For simplicity,
  // use the empty string.
  std::vector<uint8_t> label;
  blink::WebCryptoAlgorithm op_algorithm = CreateRsaOaepAlgorithm(label);

  std::string small_message("A");
  std::vector<uint8_t> ciphertext;
  // This is an operation error, as the internal consistency checking of the
  // algorithm parameters is up to the implementation.
  ASSERT_EQ(
      Status::OperationError(),
      Encrypt(
          op_algorithm, public_key, CryptoData(small_message), &ciphertext));
}

TEST_F(SharedCryptoRsaOaepTest, DecryptWithLargeMessageFails) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatPkcs8,
                      CryptoData(HexStringToBytes(kPrivateKeyPkcs8DerHex)),
                      CreateRsaHashedImportAlgorithm(
                          blink::WebCryptoAlgorithmIdRsaOaep,
                          blink::WebCryptoAlgorithmIdSha1),
                      true,
                      blink::WebCryptoKeyUsageDecrypt,
                      &private_key));

  // The label has no influence on the maximum message size. For simplicity,
  // use the empty string.
  std::vector<uint8_t> label;
  blink::WebCryptoAlgorithm op_algorithm = CreateRsaOaepAlgorithm(label);

  std::string large_dummy_message(kModulusLengthBits / 8, 'A');
  std::vector<uint8_t> plaintext;

  ASSERT_EQ(Status::OperationError(),
            Decrypt(op_algorithm,
                    private_key,
                    CryptoData(large_dummy_message),
                    &plaintext));
}

TEST_F(SharedCryptoRsaOaepTest, WrapUnwrapRawKey) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  blink::WebCryptoAlgorithm import_algorithm = CreateRsaHashedImportAlgorithm(
      blink::WebCryptoAlgorithmIdRsaOaep, blink::WebCryptoAlgorithmIdSha1);
  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();

  ASSERT_NO_FATAL_FAILURE(ImportRsaKeyPair(
      HexStringToBytes(kPublicKeySpkiDerHex),
      HexStringToBytes(kPrivateKeyPkcs8DerHex),
      import_algorithm,
      false,
      blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageWrapKey,
      blink::WebCryptoKeyUsageDecrypt | blink::WebCryptoKeyUsageUnwrapKey,
      &public_key,
      &private_key));

  std::vector<uint8_t> label;
  blink::WebCryptoAlgorithm wrapping_algorithm = CreateRsaOaepAlgorithm(label);

  const std::string key_hex = "000102030405060708090A0B0C0D0E0F";
  const blink::WebCryptoAlgorithm key_algorithm =
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc);

  blink::WebCryptoKey key =
      ImportSecretKeyFromRaw(HexStringToBytes(key_hex),
                             key_algorithm,
                             blink::WebCryptoKeyUsageEncrypt);
  ASSERT_FALSE(key.isNull());

  std::vector<uint8_t> wrapped_key;
  ASSERT_EQ(Status::Success(),
            WrapKey(blink::WebCryptoKeyFormatRaw,
                    key,
                    public_key,
                    wrapping_algorithm,
                    &wrapped_key));

  // Verify that |wrapped_key| can be decrypted and yields the key data.
  // Because |private_key| supports both decrypt and unwrap, this is valid.
  std::vector<uint8_t> decrypted_key;
  ASSERT_EQ(Status::Success(),
            Decrypt(wrapping_algorithm,
                    private_key,
                    CryptoData(wrapped_key),
                    &decrypted_key));
  EXPECT_BYTES_EQ_HEX(key_hex, decrypted_key);

  // Now attempt to unwrap the key, which should also decrypt the data.
  blink::WebCryptoKey unwrapped_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            UnwrapKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(wrapped_key),
                      private_key,
                      wrapping_algorithm,
                      key_algorithm,
                      true,
                      blink::WebCryptoKeyUsageEncrypt,
                      &unwrapped_key));
  ASSERT_FALSE(unwrapped_key.isNull());

  std::vector<uint8_t> raw_key;
  ASSERT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatRaw, unwrapped_key, &raw_key));
  EXPECT_BYTES_EQ_HEX(key_hex, raw_key);
}

TEST_F(SharedCryptoRsaOaepTest, WrapUnwrapJwkSymKey) {
  if (!SupportsRsaOaep()) {
    LOG(WARNING) << "RSA-OAEP support not present; skipping.";
    return;
  }

  // The public and private portions of a 2048-bit RSA key with the
  // id-rsaEncryption OID
  const char kPublicKey2048SpkiDerHex[] =
      "30820122300d06092a864886f70d01010105000382010f003082010a0282010100c5d8ce"
      "137a38168c8ab70229cfa5accc640567159750a312ce2e7d54b6e2fdd59b300c6a6c9764"
      "f8de6f00519cdb90111453d273a967462786480621f9e7cee5b73d63358448e7183a3a68"
      "e991186359f26aa88fbca5f53e673e502e4c5a2ba5068aeba60c9d0c44d872458d1b1e2f"
      "7f339f986076d516e93dc750f0b7680b6f5f02bc0d5590495be04c4ae59d34ba17bc5d08"
      "a93c75cfda2828f4a55b153af912038438276cb4a14f8116ca94db0ea9893652d02fc606"
      "36f19975e3d79a4d8ea8bfed6f8e0a24b63d243b08ea70a086ad56dd6341d733711c89ca"
      "749d4a80b3e6ecd2f8e53731eadeac2ea77788ee55d7b4b47c0f2523fbd61b557c16615d"
      "5d0203010001";
  const char kPrivateKey2048Pkcs8DerHex[] =
      "308204bd020100300d06092a864886f70d0101010500048204a7308204a3020100028201"
      "0100c5d8ce137a38168c8ab70229cfa5accc640567159750a312ce2e7d54b6e2fdd59b30"
      "0c6a6c9764f8de6f00519cdb90111453d273a967462786480621f9e7cee5b73d63358448"
      "e7183a3a68e991186359f26aa88fbca5f53e673e502e4c5a2ba5068aeba60c9d0c44d872"
      "458d1b1e2f7f339f986076d516e93dc750f0b7680b6f5f02bc0d5590495be04c4ae59d34"
      "ba17bc5d08a93c75cfda2828f4a55b153af912038438276cb4a14f8116ca94db0ea98936"
      "52d02fc60636f19975e3d79a4d8ea8bfed6f8e0a24b63d243b08ea70a086ad56dd6341d7"
      "33711c89ca749d4a80b3e6ecd2f8e53731eadeac2ea77788ee55d7b4b47c0f2523fbd61b"
      "557c16615d5d02030100010282010074b70feb41a0b0fcbc207670400556c9450042ede3"
      "d4383fb1ce8f3558a6d4641d26dd4c333fa4db842d2b9cf9d2354d3e16ad027a9f682d8c"
      "f4145a1ad97b9edcd8a41c402bd9d8db10f62f43df854cdccbbb2100834f083f53ed6d42"
      "b1b729a59072b004a4e945fc027db15e9c121d1251464d320d4774d5732df6b3dbf751f4"
      "9b19c9db201e19989c883bbaad5333db47f64f6f7a95b8d4936b10d945aa3f794cfaab62"
      "e7d47686129358914f3b8085f03698a650ab5b8c7e45813f2b0515ec05b6e5195b6a7c2a"
      "0d36969745f431ded4fd059f6aa361a4649541016d356297362b778e90f077d48815b339"
      "ec6f43aba345df93e67fcb6c2cb5b4544e9be902818100e9c90abe5f9f32468c5b6d630c"
      "54a4d7d75e29a72cf792f21e242aac78fd7995c42dfd4ae871d2619ff7096cb05baa78e3"
      "23ecab338401a8059adf7a0d8be3b21edc9a9c82c5605634a2ec81ec053271721351868a"
      "4c2e50c689d7cef94e31ff23658af5843366e2b289c5bf81d72756a7b93487dd8770d69c"
      "1f4e089d6d89f302818100d8a58a727c4e209132afd9933b98c89aca862a01cc0be74133"
      "bee517909e5c379e526895ac4af11780c1fe91194c777c9670b6423f0f5a32fd7691a622"
      "113eef4bed2ef863363a335fd55b0e75088c582437237d7f3ed3f0a643950237bc6e6277"
      "ccd0d0a1b4170aa1047aa7ffa7c8c54be10e8c7327ae2e0885663963817f6f02818100e5"
      "aed9ba4d71b7502e6748a1ce247ecb7bd10c352d6d9256031cdf3c11a65e44b0b7ca2945"
      "134671195af84c6b3bb3d10ebf65ae916f38bd5dbc59a0ad1c69b8beaf57cb3a8335f19b"
      "c7117b576987b48331cd9fd3d1a293436b7bb5e1a35c6560de4b5688ea834367cb0997eb"
      "b578f59ed4cb724c47dba94d3b484c1876dcd70281807f15bc7d2406007cac2b138a96af"
      "2d1e00276b84da593132c253fcb73212732dfd25824c2a615bc3d9b7f2c8d2fa542d3562"
      "b0c7738e61eeff580a6056239fb367ea9e5efe73d4f846033602e90c36a78db6fa8ea792"
      "0769675ec58e237bd994d189c8045a96f5dd3a4f12547257ce224e3c9af830a4da3c0eab"
      "9227a0035ae9028180067caea877e0b23090fc689322b71fbcce63d6596e66ab5fcdbaa0"
      "0d49e93aba8effb4518c2da637f209028401a68f344865b4956b032c69acde51d29177ca"
      "3db99fdbf5e74848ed4fa7bdfc2ebb60e2aaa5354770a763e1399ab7a2099762d525fea0"
      "37f3e1972c45a477e66db95c9609bb27f862700ef93379930786cf751b";
  blink::WebCryptoAlgorithm import_algorithm = CreateRsaHashedImportAlgorithm(
      blink::WebCryptoAlgorithmIdRsaOaep, blink::WebCryptoAlgorithmIdSha1);
  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();

  ASSERT_NO_FATAL_FAILURE(ImportRsaKeyPair(
      HexStringToBytes(kPublicKey2048SpkiDerHex),
      HexStringToBytes(kPrivateKey2048Pkcs8DerHex),
      import_algorithm,
      false,
      blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageWrapKey,
      blink::WebCryptoKeyUsageDecrypt | blink::WebCryptoKeyUsageUnwrapKey,
      &public_key,
      &private_key));

  std::vector<uint8_t> label;
  blink::WebCryptoAlgorithm wrapping_algorithm = CreateRsaOaepAlgorithm(label);

  const std::string key_hex = "000102030405060708090a0b0c0d0e0f";
  const blink::WebCryptoAlgorithm key_algorithm =
      webcrypto::CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc);

  blink::WebCryptoKey key =
      ImportSecretKeyFromRaw(HexStringToBytes(key_hex),
                             key_algorithm,
                             blink::WebCryptoKeyUsageEncrypt);
  ASSERT_FALSE(key.isNull());

  std::vector<uint8_t> wrapped_key;
  ASSERT_EQ(Status::Success(),
            WrapKey(blink::WebCryptoKeyFormatJwk,
                    key,
                    public_key,
                    wrapping_algorithm,
                    &wrapped_key));

  // Verify that |wrapped_key| can be decrypted and yields a valid JWK object.
  // Because |private_key| supports both decrypt and unwrap, this is valid.
  std::vector<uint8_t> decrypted_jwk;
  ASSERT_EQ(Status::Success(),
            Decrypt(wrapping_algorithm,
                    private_key,
                    CryptoData(wrapped_key),
                    &decrypted_jwk));
  EXPECT_TRUE(VerifySecretJwk(
      decrypted_jwk, "A128CBC", key_hex, blink::WebCryptoKeyUsageEncrypt));

  // Now attempt to unwrap the key, which should also decrypt the data.
  blink::WebCryptoKey unwrapped_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            UnwrapKey(blink::WebCryptoKeyFormatJwk,
                      CryptoData(wrapped_key),
                      private_key,
                      wrapping_algorithm,
                      key_algorithm,
                      true,
                      blink::WebCryptoKeyUsageEncrypt,
                      &unwrapped_key));
  ASSERT_FALSE(unwrapped_key.isNull());

  std::vector<uint8_t> raw_key;
  ASSERT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatRaw, unwrapped_key, &raw_key));
  EXPECT_BYTES_EQ_HEX(key_hex, raw_key);
}

// Try importing an RSA-SSA public key with unsupported key usages using SPKI
// format. RSA-SSA public keys only support the 'verify' usage.
TEST_F(SharedCryptoTest, ImportRsaSsaPublicKeyBadUsage_SPKI) {
  const blink::WebCryptoAlgorithm algorithm =
      CreateRsaHashedImportAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256);

  blink::WebCryptoKeyUsageMask bad_usages[] = {
      blink::WebCryptoKeyUsageSign,
      blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify,
      blink::WebCryptoKeyUsageEncrypt,
      blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageDecrypt,
  };

  for (size_t i = 0; i < arraysize(bad_usages); ++i) {
    SCOPED_TRACE(i);

    blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
    ASSERT_EQ(Status::ErrorCreateKeyBadUsages(),
              ImportKey(blink::WebCryptoKeyFormatSpki,
                        CryptoData(HexStringToBytes(kPublicKeySpkiDerHex)),
                        algorithm,
                        false,
                        bad_usages[i],
                        &public_key));
  }
}

// Try importing an RSA-SSA public key with unsupported key usages using JWK
// format. RSA-SSA public keys only support the 'verify' usage.
TEST_F(SharedCryptoTest, ImportRsaSsaPublicKeyBadUsage_JWK) {
  const blink::WebCryptoAlgorithm algorithm =
      CreateRsaHashedImportAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256);

  blink::WebCryptoKeyUsageMask bad_usages[] = {
      blink::WebCryptoKeyUsageSign,
      blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify,
      blink::WebCryptoKeyUsageEncrypt,
      blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageDecrypt,
  };

  base::DictionaryValue dict;
  RestoreJwkRsaDictionary(&dict);
  dict.Remove("use", NULL);
  dict.SetString("alg", "RS256");

  for (size_t i = 0; i < arraysize(bad_usages); ++i) {
    SCOPED_TRACE(i);

    blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
    ASSERT_EQ(Status::ErrorCreateKeyBadUsages(),
              ImportKeyJwkFromDict(
                  dict, algorithm, false, bad_usages[i], &public_key));
  }
}

// Try importing an AES-CBC key with unsupported key usages using raw
// format. AES-CBC keys support the following usages:
//   'encrypt', 'decrypt', 'wrapKey', 'unwrapKey'
TEST_F(SharedCryptoTest, ImportAesCbcKeyBadUsage_Raw) {
  const blink::WebCryptoAlgorithm algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc);

  blink::WebCryptoKeyUsageMask bad_usages[] = {
      blink::WebCryptoKeyUsageSign,
      blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageDecrypt,
      blink::WebCryptoKeyUsageDeriveBits,
      blink::WebCryptoKeyUsageUnwrapKey | blink::WebCryptoKeyUsageVerify,
  };

  std::vector<uint8_t> key_bytes(16);

  for (size_t i = 0; i < arraysize(bad_usages); ++i) {
    SCOPED_TRACE(i);

    blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
    ASSERT_EQ(Status::ErrorCreateKeyBadUsages(),
              ImportKey(blink::WebCryptoKeyFormatRaw,
                        CryptoData(key_bytes),
                        algorithm,
                        true,
                        bad_usages[i],
                        &key));
  }
}

// Try importing an AES-KW key with unsupported key usages using raw
// format. AES-KW keys support the following usages:
//   'wrapKey', 'unwrapKey'
TEST_F(SharedCryptoTest, ImportAesKwKeyBadUsage_Raw) {
  const blink::WebCryptoAlgorithm algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);

  blink::WebCryptoKeyUsageMask bad_usages[] = {
      blink::WebCryptoKeyUsageEncrypt,
      blink::WebCryptoKeyUsageDecrypt,
      blink::WebCryptoKeyUsageSign,
      blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageUnwrapKey,
      blink::WebCryptoKeyUsageDeriveBits,
      blink::WebCryptoKeyUsageUnwrapKey | blink::WebCryptoKeyUsageVerify,
  };

  std::vector<uint8_t> key_bytes(16);

  for (size_t i = 0; i < arraysize(bad_usages); ++i) {
    SCOPED_TRACE(i);

    blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
    ASSERT_EQ(Status::ErrorCreateKeyBadUsages(),
              ImportKey(blink::WebCryptoKeyFormatRaw,
                        CryptoData(key_bytes),
                        algorithm,
                        true,
                        bad_usages[i],
                        &key));
  }
}

// Try unwrapping an HMAC key with unsupported usages using JWK format and
// AES-KW. HMAC keys support the following usages:
//   'sign', 'verify'
TEST_F(SharedCryptoTest, UnwrapHmacKeyBadUsage_JWK) {
  const blink::WebCryptoAlgorithm unwrap_algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);

  blink::WebCryptoKeyUsageMask bad_usages[] = {
      blink::WebCryptoKeyUsageEncrypt,
      blink::WebCryptoKeyUsageDecrypt,
      blink::WebCryptoKeyUsageWrapKey,
      blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageWrapKey,
      blink::WebCryptoKeyUsageVerify | blink::WebCryptoKeyUsageDeriveKey,
  };

  // Import the wrapping key.
  blink::WebCryptoKey wrapping_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(std::vector<uint8_t>(16)),
                      unwrap_algorithm,
                      true,
                      blink::WebCryptoKeyUsageUnwrapKey,
                      &wrapping_key));

  // The JWK plain text is:
  //   {   "kty": "oct","alg": "HS256","k": "GADWrMRHwQfoNaXU5fZvTg=="}
  const char* kWrappedJwk =
      "0AA245F17064FFB2A7A094436A39BEBFC962C627303D1327EA750CE9F917688C2782A943"
      "7AE7586547AC490E8AE7D5B02D63868D5C3BB57D36C4C8C5BF3962ACEC6F42E767E5706"
      "4";

  for (size_t i = 0; i < arraysize(bad_usages); ++i) {
    SCOPED_TRACE(i);

    blink::WebCryptoKey key = blink::WebCryptoKey::createNull();

    ASSERT_EQ(Status::ErrorCreateKeyBadUsages(),
              UnwrapKey(blink::WebCryptoKeyFormatJwk,
                        CryptoData(HexStringToBytes(kWrappedJwk)),
                        wrapping_key,
                        unwrap_algorithm,
                        webcrypto::CreateHmacImportAlgorithm(
                            blink::WebCryptoAlgorithmIdSha256),
                        true,
                        bad_usages[i],
                        &key));
  }
}

// Try unwrapping an RSA-SSA public key with unsupported usages using JWK format
// and AES-KW. RSA-SSA public keys support the following usages:
//   'verify'
TEST_F(SharedCryptoTest, UnwrapRsaSsaPublicKeyBadUsage_JWK) {
  const blink::WebCryptoAlgorithm unwrap_algorithm =
      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw);

  blink::WebCryptoKeyUsageMask bad_usages[] = {
      blink::WebCryptoKeyUsageEncrypt,
      blink::WebCryptoKeyUsageSign,
      blink::WebCryptoKeyUsageDecrypt,
      blink::WebCryptoKeyUsageWrapKey,
      blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageWrapKey,
  };

  // Import the wrapping key.
  blink::WebCryptoKey wrapping_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            ImportKey(blink::WebCryptoKeyFormatRaw,
                      CryptoData(std::vector<uint8_t>(16)),
                      unwrap_algorithm,
                      true,
                      blink::WebCryptoKeyUsageUnwrapKey,
                      &wrapping_key));

  // The JWK plaintext is:
  // {    "kty": "RSA","alg": "RS256","n": "...","e": "AQAB"}

  const char* kWrappedJwk =
      "CE8DAEF99E977EE58958B8C4494755C846E883B2ECA575C5366622839AF71AB30875F152"
      "E8E33E15A7817A3A2874EB53EFE05C774D98BC936BA9BA29BEB8BB3F3C3CE2323CB3359D"
      "E3F426605CF95CCF0E01E870ABD7E35F62E030B5FB6E520A5885514D1D850FB64B57806D"
      "1ADA57C6E27DF345D8292D80F6B074F1BE51C4CF3D76ECC8886218551308681B44FAC60B"
      "8CF6EA439BC63239103D0AE81ADB96F908680586C6169284E32EB7DD09D31103EBDAC0C2"
      "40C72DCF0AEA454113CC47457B13305B25507CBEAB9BDC8D8E0F867F9167F9DCEF0D9F9B"
      "30F2EE83CEDFD51136852C8A5939B768";

  for (size_t i = 0; i < arraysize(bad_usages); ++i) {
    SCOPED_TRACE(i);

    blink::WebCryptoKey key = blink::WebCryptoKey::createNull();

    ASSERT_EQ(Status::ErrorCreateKeyBadUsages(),
              UnwrapKey(blink::WebCryptoKeyFormatJwk,
                        CryptoData(HexStringToBytes(kWrappedJwk)),
                        wrapping_key,
                        unwrap_algorithm,
                        webcrypto::CreateRsaHashedImportAlgorithm(
                            blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                            blink::WebCryptoAlgorithmIdSha256),
                        true,
                        bad_usages[i],
                        &key));
  }
}

// Generate an AES-CBC key with invalid usages. AES-CBC supports:
//   'encrypt', 'decrypt', 'wrapKey', 'unwrapKey'
TEST_F(SharedCryptoTest, GenerateAesKeyBadUsages) {
  blink::WebCryptoKeyUsageMask bad_usages[] = {
      blink::WebCryptoKeyUsageSign, blink::WebCryptoKeyUsageVerify,
      blink::WebCryptoKeyUsageDecrypt | blink::WebCryptoKeyUsageVerify,
  };

  for (size_t i = 0; i < arraysize(bad_usages); ++i) {
    SCOPED_TRACE(i);

    blink::WebCryptoKey key = blink::WebCryptoKey::createNull();

    ASSERT_EQ(Status::ErrorCreateKeyBadUsages(),
              GenerateSecretKey(
                  CreateAesCbcKeyGenAlgorithm(128), true, bad_usages[i], &key));
  }
}

// Generate an RSA-SSA key pair with invalid usages. RSA-SSA supports:
//   'sign', 'verify'
TEST_F(SharedCryptoTest, GenerateRsaSsaBadUsages) {
  blink::WebCryptoKeyUsageMask bad_usages[] = {
      blink::WebCryptoKeyUsageDecrypt,
      blink::WebCryptoKeyUsageVerify | blink::WebCryptoKeyUsageDecrypt,
      blink::WebCryptoKeyUsageWrapKey,
  };

  const unsigned int modulus_length = 256;
  const std::vector<uint8_t> public_exponent = HexStringToBytes("010001");

  for (size_t i = 0; i < arraysize(bad_usages); ++i) {
    SCOPED_TRACE(i);

    blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
    blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();

    ASSERT_EQ(Status::ErrorCreateKeyBadUsages(),
              GenerateKeyPair(CreateRsaHashedKeyGenAlgorithm(
                                  blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                  blink::WebCryptoAlgorithmIdSha256,
                                  modulus_length,
                                  public_exponent),
                              true,
                              bad_usages[i],
                              &public_key,
                              &private_key));
  }
}

// Generate an RSA-SSA key pair. The public and private keys should select the
// key usages which are applicable, and not have the exact same usages as was
// specified to GenerateKey
TEST_F(SharedCryptoTest, GenerateRsaSsaKeyPairIntersectUsages) {
  const unsigned int modulus_length = 256;
  const std::vector<uint8_t> public_exponent = HexStringToBytes("010001");

  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();

  ASSERT_EQ(Status::Success(),
            GenerateKeyPair(
                CreateRsaHashedKeyGenAlgorithm(
                    blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                    blink::WebCryptoAlgorithmIdSha256,
                    modulus_length,
                    public_exponent),
                true,
                blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify,
                &public_key,
                &private_key));

  EXPECT_EQ(blink::WebCryptoKeyUsageVerify, public_key.usages());
  EXPECT_EQ(blink::WebCryptoKeyUsageSign, private_key.usages());

  // Try again but this time without the Verify usages.
  ASSERT_EQ(Status::Success(),
            GenerateKeyPair(CreateRsaHashedKeyGenAlgorithm(
                                blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                blink::WebCryptoAlgorithmIdSha256,
                                modulus_length,
                                public_exponent),
                            true,
                            blink::WebCryptoKeyUsageSign,
                            &public_key,
                            &private_key));

  EXPECT_EQ(0, public_key.usages());
  EXPECT_EQ(blink::WebCryptoKeyUsageSign, private_key.usages());
}

// Generate an AES-CBC key and an RSA key pair. Use the AES-CBC key to wrap the
// key pair (using SPKI format for public key, PKCS8 format for private key).
// Then unwrap the wrapped key pair and verify that the key data is the same.
TEST_F(SharedCryptoTest, WrapUnwrapRoundtripSpkiPkcs8UsingAesCbc) {
  if (!SupportsRsaKeyImport())
    return;

  // Generate the wrapping key.
  blink::WebCryptoKey wrapping_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            GenerateSecretKey(CreateAesCbcKeyGenAlgorithm(128),
                              true,
                              blink::WebCryptoKeyUsageWrapKey |
                                  blink::WebCryptoKeyUsageUnwrapKey,
                              &wrapping_key));

  // Generate an RSA key pair to be wrapped.
  const unsigned int modulus_length = 256;
  const std::vector<uint8_t> public_exponent = HexStringToBytes("010001");

  blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
  blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();
  ASSERT_EQ(Status::Success(),
            GenerateKeyPair(CreateRsaHashedKeyGenAlgorithm(
                                blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                blink::WebCryptoAlgorithmIdSha256,
                                modulus_length,
                                public_exponent),
                            true,
                            0,
                            &public_key,
                            &private_key));

  // Export key pair as SPKI + PKCS8
  std::vector<uint8_t> public_key_spki;
  ASSERT_EQ(
      Status::Success(),
      ExportKey(blink::WebCryptoKeyFormatSpki, public_key, &public_key_spki));

  std::vector<uint8_t> private_key_pkcs8;
  ASSERT_EQ(
      Status::Success(),
      ExportKey(
          blink::WebCryptoKeyFormatPkcs8, private_key, &private_key_pkcs8));

  // Wrap the key pair.
  blink::WebCryptoAlgorithm wrap_algorithm =
      CreateAesCbcAlgorithm(std::vector<uint8_t>(16, 0));

  std::vector<uint8_t> wrapped_public_key;
  ASSERT_EQ(Status::Success(),
            WrapKey(blink::WebCryptoKeyFormatSpki,
                    public_key,
                    wrapping_key,
                    wrap_algorithm,
                    &wrapped_public_key));

  std::vector<uint8_t> wrapped_private_key;
  ASSERT_EQ(Status::Success(),
            WrapKey(blink::WebCryptoKeyFormatPkcs8,
                    private_key,
                    wrapping_key,
                    wrap_algorithm,
                    &wrapped_private_key));

  // Unwrap the key pair.
  blink::WebCryptoAlgorithm rsa_import_algorithm =
      CreateRsaHashedImportAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                     blink::WebCryptoAlgorithmIdSha256);

  blink::WebCryptoKey unwrapped_public_key = blink::WebCryptoKey::createNull();

  ASSERT_EQ(Status::Success(),
            UnwrapKey(blink::WebCryptoKeyFormatSpki,
                      CryptoData(wrapped_public_key),
                      wrapping_key,
                      wrap_algorithm,
                      rsa_import_algorithm,
                      true,
                      0,
                      &unwrapped_public_key));

  blink::WebCryptoKey unwrapped_private_key = blink::WebCryptoKey::createNull();

  ASSERT_EQ(Status::Success(),
            UnwrapKey(blink::WebCryptoKeyFormatPkcs8,
                      CryptoData(wrapped_private_key),
                      wrapping_key,
                      wrap_algorithm,
                      rsa_import_algorithm,
                      true,
                      0,
                      &unwrapped_private_key));

  // Export unwrapped key pair as SPKI + PKCS8
  std::vector<uint8_t> unwrapped_public_key_spki;
  ASSERT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatSpki,
                      unwrapped_public_key,
                      &unwrapped_public_key_spki));

  std::vector<uint8_t> unwrapped_private_key_pkcs8;
  ASSERT_EQ(Status::Success(),
            ExportKey(blink::WebCryptoKeyFormatPkcs8,
                      unwrapped_private_key,
                      &unwrapped_private_key_pkcs8));

  EXPECT_EQ(public_key_spki, unwrapped_public_key_spki);
  EXPECT_EQ(private_key_pkcs8, unwrapped_private_key_pkcs8);

  EXPECT_NE(public_key_spki, wrapped_public_key);
  EXPECT_NE(private_key_pkcs8, wrapped_private_key);
}

}  // namespace webcrypto

}  // namespace content