[WebCrypto] Throw syntaxError if keyUsage is empty in ImportKey

content/child/webcrypto/openssl/aes_key_openssl.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/child/webcrypto/openssl/aes_key_openssl.h"
 
 #include "base/logging.h"
 #include "content/child/webcrypto/crypto_data.h"
 #include "content/child/webcrypto/jwk.h"
 #include "content/child/webcrypto/openssl/key_openssl.h"
@@ skipping 47 matching lines @@
     default:
       return Status::ErrorUnsupportedImportKeyFormat();
   }
 }
 
 Status AesAlgorithm::ImportKeyRaw(const CryptoData& key_data,
                                   const blink::WebCryptoAlgorithm& algorithm,
                                   bool extractable,
                                   blink::WebCryptoKeyUsageMask usages,
                                   blink::WebCryptoKey* key) const {
+  if (usages == 0)
+    return Status::ErrorImportKeyEmptyUsages();
+
   const unsigned int keylen_bytes = key_data.byte_length();
   Status status = VerifyAesKeyLengthForImport(keylen_bytes);
   if (status.IsError())
     return status;
 
   // No possibility of overflow.
   unsigned int keylen_bits = keylen_bytes * 8;
 
   return ImportKeyRawOpenSsl(key_data, blink::WebCryptoKeyAlgorithm::createAes(
                                            algorithm.id(), keylen_bits),
                              extractable, usages, key);
 }
 
 Status AesAlgorithm::ImportKeyJwk(const CryptoData& key_data,
                                   const blink::WebCryptoAlgorithm& algorithm,
                                   bool extractable,
                                   blink::WebCryptoKeyUsageMask usages,
                                   blink::WebCryptoKey* key) const {
+  if (usages == 0)
+    return Status::ErrorImportKeyEmptyUsages();
+
   std::vector<uint8_t> raw_data;
   Status status = ReadAesSecretKeyJwk(key_data, jwk_suffix_, extractable,
                                       usages, &raw_data);
   if (status.IsError())
     return status;
 
   return ImportKeyRaw(CryptoData(raw_data), algorithm, extractable, usages,
                       key);
 }
 
@@ skipping 29 matching lines @@
     blink::WebCryptoKeyUsageMask usages,
     const CryptoData& key_data,
     blink::WebCryptoKey* key) const {
   return ImportKeyRaw(key_data, CreateAlgorithm(algorithm.id()), extractable,
                       usages, key);
 }
 
 }  // namespace webcrypto
 
 }  // namespace content