[webcrypto] Remove code conditional on !defined(WEBCRYPTO_HAS_KEY_ALGORITHM).

content/renderer/webcrypto/shared_crypto_unittest.cc

 // 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 "content/renderer/webcrypto/shared_crypto.h"
 
 #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/strings/string_number_conversions.h"
 #include "base/values.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/renderer/renderer_webkitplatformsupport_impl.h"
 #include "content/renderer/webcrypto/crypto_data.h"
 #include "content/renderer/webcrypto/webcrypto_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebArrayBuffer.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
-#endif
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
 #include "third_party/WebKit/public/platform/WebCryptoKey.h"
 #include "third_party/re2/re2/re2.h"
 
 // The OpenSSL implementation of WebCrypto is less complete, so don't run all of
 // the tests: http://crbug.com/267888
 #if defined(USE_OPENSSL)
 #define MAYBE(test_name) DISABLED_##test_name
 #else
 #define MAYBE(test_name) test_name
@@ skipping 30 matching lines @@
 blink::WebCryptoAlgorithm CreateRsaHashedKeyGenAlgorithm(
     blink::WebCryptoAlgorithmId algorithm_id,
     const blink::WebCryptoAlgorithmId hash_id,
     unsigned int modulus_length,
     const std::vector<uint8>& public_exponent) {
   DCHECK(algorithm_id == blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5 ||
          algorithm_id == blink::WebCryptoAlgorithmIdRsaOaep);
   DCHECK(IsHashAlgorithm(hash_id));
   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
       algorithm_id,
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
       new blink::WebCryptoRsaHashedKeyGenParams(
           CreateAlgorithm(hash_id),
-#else
-      new blink::WebCryptoRsaKeyGenParams(
-#endif
           modulus_length,
           webcrypto::Uint8VectorStart(public_exponent),
           public_exponent.size()));
 }
 
 // Creates an AES-CBC algorithm.
 blink::WebCryptoAlgorithm CreateAesCbcAlgorithm(const std::vector<uint8>& iv) {
   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
       blink::WebCryptoAlgorithmIdAesCbc,
       new blink::WebCryptoAesCbcParams(Uint8VectorStart(iv), iv.size()));
@@ skipping 18 matching lines @@
 // 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_bytes parameter is optional, with zero meaning unspecified.
 blink::WebCryptoAlgorithm CreateHmacKeyGenAlgorithm(
     blink::WebCryptoAlgorithmId hash_id,
     unsigned int key_length_bytes) {
   DCHECK(IsHashAlgorithm(hash_id));
   // key_length_bytes == 0 means unspecified
   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
       blink::WebCryptoAlgorithmIdHmac,
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
       new blink::WebCryptoHmacKeyGenParams(
-#else
-      new blink::WebCryptoHmacKeyParams(
-#endif
           CreateAlgorithm(hash_id), (key_length_bytes != 0), key_length_bytes));
 }
 
 // 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> Corrupted(const std::vector<uint8>& input) {
   std::vector<uint8> corrupted_data(input);
   if (corrupted_data.empty())
@@ skipping 171 matching lines @@
 }
 
 blink::WebCryptoAlgorithm CreateRsaHashedImportAlgorithm(
     blink::WebCryptoAlgorithmId algorithm_id,
     blink::WebCryptoAlgorithmId hash_id) {
   DCHECK(algorithm_id == blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5 ||
          algorithm_id == blink::WebCryptoAlgorithmIdRsaOaep);
   DCHECK(IsHashAlgorithm(hash_id));
   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
       algorithm_id,
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
       new blink::WebCryptoRsaHashedImportParams(CreateAlgorithm(hash_id)));
-#else
-      // Good enough for the tests.
-      new blink::WebCryptoRsaSsaParams(CreateAlgorithm(hash_id)));
-#endif
 }
 
 // Determines if two ArrayBuffers have identical content.
 bool ArrayBuffersEqual(const blink::WebArrayBuffer& a,
                        const blink::WebArrayBuffer& b) {
   return a.byteLength() == b.byteLength() &&
          memcmp(a.data(), b.data(), a.byteLength()) == 0;
 }
 
 // Given a vector of WebArrayBuffers, determines if there are any copies.
@@ skipping 267 matching lines @@
         CreateAlgorithm(blink::WebCryptoAlgorithmIdHmac);
 
     blink::WebCryptoAlgorithm importAlgorithm =
         CreateHmacImportAlgorithm(test_hash.id());
 
     blink::WebCryptoKey key = ImportSecretKeyFromRaw(
         test_key,
         importAlgorithm,
         blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify);
 
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
     EXPECT_EQ(test_hash.id(), key.algorithm().hmacParams()->hash().id());
-#endif
 
     // Verify exported raw key is identical to the imported data
     blink::WebArrayBuffer raw_key;
     EXPECT_STATUS_SUCCESS(
         ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
     ExpectArrayBufferMatches(test_key, raw_key);
 
     blink::WebArrayBuffer output;
 
     ASSERT_STATUS_SUCCESS(
@@ skipping 138 matching lines @@
     std::vector<uint8> test_plain_text =
         GetBytesFromHexString(test, "plain_text");
     std::vector<uint8> test_cipher_text =
         GetBytesFromHexString(test, "cipher_text");
 
     blink::WebCryptoKey key = ImportSecretKeyFromRaw(
         test_key,
         CreateAlgorithm(blink::WebCryptoAlgorithmIdAesCbc),
         blink::WebCryptoKeyUsageEncrypt | blink::WebCryptoKeyUsageDecrypt);
 
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
     EXPECT_EQ(test_key.size() * 8, key.algorithm().aesParams()->lengthBits());
-#endif
 
     // Verify exported raw key is identical to the imported data
     blink::WebArrayBuffer raw_key;
     EXPECT_STATUS_SUCCESS(
         ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
     ExpectArrayBufferMatches(test_key, raw_key);
 
     blink::WebArrayBuffer output;
 
     // Test encryption.
@@ skipping 55 matching lines @@
   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_STATUS_SUCCESS(GenerateSecretKey(algorithm[i], true, 0, &key));
       EXPECT_TRUE(key.handle());
       EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
       ASSERT_STATUS_SUCCESS(
           ExportKey(blink::WebCryptoKeyFormatRaw, key, &key_bytes));
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
       EXPECT_EQ(key_bytes.byteLength() * 8,
                 key.algorithm().aesParams()->lengthBits());
-#endif
       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, MAYBE(GenerateKeyAesBadLength)) {
   const unsigned short kKeyLen[] = {0, 127, 257};
@@ skipping 18 matching lines @@
   for (int i = 0; i < 16; ++i) {
     blink::WebArrayBuffer key_bytes;
     blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
     blink::WebCryptoAlgorithm algorithm =
         CreateHmacKeyGenAlgorithm(blink::WebCryptoAlgorithmIdSha1, 64);
     ASSERT_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());
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
     EXPECT_EQ(blink::WebCryptoAlgorithmIdSha1,
               key.algorithm().hmacParams()->hash().id());
-#endif
 
     blink::WebArrayBuffer raw_key;
     ASSERT_STATUS_SUCCESS(
         ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
     EXPECT_EQ(64U, raw_key.byteLength());
     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, MAYBE(GenerateKeyHmacNoLength)) {
   blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
   blink::WebCryptoAlgorithm algorithm =
       CreateHmacKeyGenAlgorithm(blink::WebCryptoAlgorithmIdSha1, 0);
   ASSERT_STATUS_SUCCESS(GenerateSecretKey(algorithm, true, 0, &key));
   EXPECT_TRUE(key.handle());
   EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
   blink::WebArrayBuffer raw_key;
   ASSERT_STATUS_SUCCESS(ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
   EXPECT_EQ(64U, raw_key.byteLength());
 
   // The block size for HMAC SHA-512 is larger.
   algorithm = CreateHmacKeyGenAlgorithm(blink::WebCryptoAlgorithmIdSha512, 0);
   ASSERT_STATUS_SUCCESS(GenerateSecretKey(algorithm, true, 0, &key));
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
   EXPECT_EQ(blink::WebCryptoAlgorithmIdSha512,
             key.algorithm().hmacParams()->hash().id());
-#endif
   ASSERT_STATUS_SUCCESS(ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
   EXPECT_EQ(128U, raw_key.byteLength());
 }
 
 TEST_F(SharedCryptoTest, MAYBE(ImportSecretKeyNoAlgorithm)) {
   blink::WebCryptoKey key = blink::WebCryptoKey::createNull();
 
   // This fails because the algorithm is null.
   EXPECT_STATUS(Status::ErrorMissingAlgorithmImportRawKey(),
                 ImportKey(blink::WebCryptoKeyFormatRaw,
@@ skipping 335 matching lines @@
   base::DictionaryValue dict;
   dict.SetString("kty", "oct");
   dict.SetString("alg", "HS256");
   dict.SetString("use", "sig");
   dict.SetBoolean("extractable", false);
   dict.SetString("k", "l3nZEgZCeX8XRwJdWyK3rGB8qwjhdY8vOkbIvh4lxTuMao9Y_--hdg");
 
   ASSERT_STATUS_SUCCESS(
       ImportKeyJwkFromDict(dict, algorithm, extractable, usage_mask, &key));
 
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
   EXPECT_EQ(blink::WebCryptoAlgorithmIdSha256,
             key.algorithm().hmacParams()->hash().id());
-#endif
 
   const std::vector<uint8> message_raw = HexStringToBytes(
       "b1689c2591eaf3c9e66070f8a77954ffb81749f1b00346f9dfe0b2ee905dcc288baf4a"
       "92de3f4001dd9f44c468c3d07d6c6ee82faceafc97c2fc0fc0601719d2dcd0aa2aec92"
       "d1b0ae933c65eb06a03c9c935c2bad0459810241347ab87e9f11adb30415424c6c7f5f"
       "22a003b8ab8de54f6ded0e3ab9245fa79568451dfa258e");
 
   blink::WebArrayBuffer output;
 
   ASSERT_STATUS_SUCCESS(Sign(CreateAlgorithm(blink::WebCryptoAlgorithmIdHmac),
@@ skipping 16 matching lines @@
       ImportKey(blink::WebCryptoKeyFormatSpki,
                 CryptoData(HexStringToBytes(kPublicKeySpkiDerHex)),
                 CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaEsPkcs1v1_5),
                 true,
                 blink::WebCryptoKeyUsageEncrypt,
                 &key));
   EXPECT_TRUE(key.handle());
   EXPECT_EQ(blink::WebCryptoKeyTypePublic, key.type());
   EXPECT_TRUE(key.extractable());
   EXPECT_EQ(blink::WebCryptoKeyUsageEncrypt, key.usages());
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
   EXPECT_EQ(kModulusLength, key.algorithm().rsaParams()->modulusLengthBits());
   ExpectCryptoDataMatchesHex(
       "010001", CryptoData(key.algorithm().rsaParams()->publicExponent()));
-#endif
 
   // Failing case: Empty SPKI data
   EXPECT_STATUS(Status::ErrorImportEmptyKeyData(),
                 ImportKey(blink::WebCryptoKeyFormatSpki,
                           CryptoData(std::vector<uint8>()),
                           blink::WebCryptoAlgorithm::createNull(),
                           true,
                           blink::WebCryptoKeyUsageEncrypt,
                           &key));
 
@@ skipping 60 matching lines @@
       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());
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
   EXPECT_EQ(blink::WebCryptoAlgorithmIdSha1,
             key.algorithm().rsaHashedParams()->hash().id());
   EXPECT_EQ(kModulusLength,
             key.algorithm().rsaHashedParams()->modulusLengthBits());
   ExpectCryptoDataMatchesHex(
       "010001",
       CryptoData(key.algorithm().rsaHashedParams()->publicExponent()));
-#endif
 
   // Failing case: Empty PKCS#8 data
   EXPECT_STATUS(Status::ErrorImportEmptyKeyData(),
                 ImportKey(blink::WebCryptoKeyFormatPkcs8,
                           CryptoData(std::vector<uint8>()),
                           blink::WebCryptoAlgorithm::createNull(),
                           true,
                           blink::WebCryptoKeyUsageSign,
                           &key));
 
@@ skipping 116 matching lines @@
   algorithm = CreateRsaHashedKeyGenAlgorithm(blink::WebCryptoAlgorithmIdRsaOaep,
                                              blink::WebCryptoAlgorithmIdSha256,
                                              modulus_length,
                                              public_exponent);
   EXPECT_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());
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
   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());
-#endif
   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.
   algorithm =
       CreateRsaHashedKeyGenAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                      blink::WebCryptoAlgorithmIdSha1,
                                      modulus_length,
                                      public_exponent);
   EXPECT_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());
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
   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());
-#endif
   // 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.
   blink::WebArrayBuffer output;
@@ skipping 192 matching lines @@
   blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
   blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();
   ImportRsaKeyPair(HexStringToBytes(kPublicKeySpkiDerHex),
                    HexStringToBytes(kPrivateKeyPkcs8DerHex),
                    importAlgorithm,
                    false,
                    usage_mask,
                    &public_key,
                    &private_key);
 
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
   blink::WebCryptoAlgorithm algorithm =
       CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5);
-#else
-  blink::WebCryptoAlgorithm algorithm = importAlgorithm;
-#endif
 
   blink::WebArrayBuffer signature;
   bool signature_match;
 
   // Compute a signature.
   const std::vector<uint8> data = HexStringToBytes("010203040506070809");
   ASSERT_STATUS_SUCCESS(
       Sign(algorithm, private_key, CryptoData(data), &signature));
 
   // Ensure truncated signature does not verify by passing one less byte.
@@ skipping 52 matching lines @@
 
   EXPECT_STATUS(Status::ErrorUnexpected(),
                 Sign(algorithm, private_key, CryptoData(data), &signature));
   EXPECT_STATUS(Status::ErrorUnexpected(),
                 VerifySignature(algorithm,
                                 public_key,
                                 CryptoData(signature),
                                 CryptoData(data),
                                 &signature_match));
 
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
   // 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.
@@ skipping 24 matching lines @@
             public_key_256.algorithm().rsaHashedParams()->hash().id());
 
   bool is_match;
   EXPECT_STATUS_SUCCESS(VerifySignature(
       CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5),
       public_key_256,
       CryptoData(signature),
       CryptoData(data),
       &is_match));
   EXPECT_FALSE(is_match);
-#endif
 }
 
 TEST_F(SharedCryptoTest, MAYBE(RsaSignVerifyKnownAnswer)) {
   scoped_ptr<base::ListValue> tests;
   ASSERT_TRUE(ReadJsonTestFileToList("pkcs1v15_sign.json", &tests));
 
   // Import the key pair.
   blink::WebCryptoAlgorithm importAlgorithm =
       CreateRsaHashedImportAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5,
                                      blink::WebCryptoAlgorithmIdSha1);
   blink::WebCryptoKey public_key = blink::WebCryptoKey::createNull();
   blink::WebCryptoKey private_key = blink::WebCryptoKey::createNull();
   ImportRsaKeyPair(
       HexStringToBytes(kPublicKeySpkiDerHex),
       HexStringToBytes(kPrivateKeyPkcs8DerHex),
       importAlgorithm,
       false,
       blink::WebCryptoKeyUsageSign | blink::WebCryptoKeyUsageVerify,
       &public_key,
       &private_key);
 
-#ifdef WEBCRYPTO_HAS_KEY_ALGORITHM
   blink::WebCryptoAlgorithm algorithm =
       CreateAlgorithm(blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5);
-#else
-  const blink::WebCryptoAlgorithm& algorithm = importAlgorithm;
-#endif
 
   // Validate the signatures are computed and verified as expected.
   blink::WebArrayBuffer 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> test_message =
@@ skipping 216 matching lines @@
                                         test_cipher_text,
                                         test_authentication_tag,
                                         &plain_text));
     }
   }
 }
 
 }  // namespace webcrypto
 
 }  // namespace content