Refactor to share more code between OpenSSL and NSS implementations.

content/renderer/webcrypto/webcrypto_util.cc

 // Copyright 2013 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/webcrypto_util.h"
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
@@ skipping 89 matching lines @@
 }
 
 Status Status::ErrorImportEmptyKeyData() {
   return Status("No key data was provided");
 }
 
 Status Status::ErrorUnexpectedKeyType() {
   return Status("The key is not of the expected type");
 }
 
+Status Status::ErrorKeyAlgorithmMismatch() {
+  return Status("The key's algorithm doesn't match that of operation");
+}
+
 Status Status::ErrorIncorrectSizeAesCbcIv() {
   return Status("The \"iv\" has an unexpected length -- must be 16 bytes");
 }
 
 Status Status::ErrorDataTooLarge() {
   return Status("The provided data is too large");
 }
 
 Status Status::ErrorUnsupported() {
   return Status("The requested operation is unsupported");
@@ skipping 199 matching lines @@
       return 64;
     case blink::WebCryptoAlgorithmIdSha384:
     case blink::WebCryptoAlgorithmIdSha512:
       return 128;
     default:
       NOTREACHED();
       return 0;
   }
 }
 
+bool IsAlgorithmAsymmetric(const blink::WebCryptoAlgorithm& algorithm) {
+  // TODO(padolph): include all other asymmetric algorithms once they are
+  // defined, e.g. EC and DH.
+  return (algorithm.id() == blink::WebCryptoAlgorithmIdRsaEsPkcs1v1_5 ||
+          algorithm.id() == blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5 ||
+          algorithm.id() == blink::WebCryptoAlgorithmIdRsaOaep);
+}
+
 }  // namespace webcrypto
 
 }  // namespace content