Refactor the interface for generating keys.

content/child/webcrypto/webcrypto_util.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/webcrypto_util.h"
 
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "content/child/webcrypto/status.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
@@ skipping 122 matching lines @@
 bool KeyUsageAllows(const blink::WebCryptoKey& key,
                     const blink::WebCryptoKeyUsage usage) {
   return ((key.usages() & usage) != 0);
 }
 
 bool IsAlgorithmRsa(blink::WebCryptoAlgorithmId alg_id) {
   return alg_id == blink::WebCryptoAlgorithmIdRsaOaep ||
          alg_id == blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5;
 }
 
-bool IsAlgorithmAsymmetric(blink::WebCryptoAlgorithmId alg_id) {
-  // TODO(padolph): include all other asymmetric algorithms once they are
-  // defined, e.g. EC and DH.
-  return IsAlgorithmRsa(alg_id);
-}
-
 // The WebCrypto spec defines the default value for the tag length, as well as
 // the allowed values for tag length.
 Status GetAesGcmTagLengthInBits(const blink::WebCryptoAesGcmParams* params,
                                 unsigned int* tag_length_bits) {
   *tag_length_bits = 128;
   if (params->hasTagLengthBits())
     *tag_length_bits = params->optionalTagLengthBits();
 
   if (*tag_length_bits != 32 && *tag_length_bits != 64 &&
       *tag_length_bits != 96 && *tag_length_bits != 104 &&
@@ skipping 89 matching lines @@
   // avoid feeding OpenSSL data that will hang use a whitelist.
   if (*public_exponent != 3 && *public_exponent != 65537)
     return Status::ErrorGenerateKeyPublicExponent();
 
   return Status::Success();
 }
 
 }  // namespace webcrypto
 
 }  // namespace content