Implement RSAPrivateKey::Copy()

crypto/rsa_private_key_mac.cc

 // Copyright (c) 2011 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 "crypto/rsa_private_key.h"
 
 #include <list>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 156 matching lines @@
 
 RSAPrivateKey::~RSAPrivateKey() {
   if (key_.KeyData.Data) {
     CSSM_FreeKey(GetSharedCSPHandle(), NULL, &key_, CSSM_FALSE);
   }
   if (public_key_.KeyData.Data) {
     CSSM_FreeKey(GetSharedCSPHandle(), NULL, &public_key_, CSSM_FALSE);
   }
 }
 
-bool RSAPrivateKey::ExportPrivateKey(std::vector<uint8>* output) {
+RSAPrivateKey* RSAPrivateKey::Copy() const {
+  std::vector<uint8> key_bytes;
+  if (!ExportPrivateKey(&key_bytes))
+    return NULL;
+  return CreateFromPrivateKeyInfo(key_bytes);
+}
+
+bool RSAPrivateKey::ExportPrivateKey(std::vector<uint8>* output) const {
   if (!key_.KeyData.Data || !key_.KeyData.Length) {
     return false;
   }
   output->clear();
   output->insert(output->end(), key_.KeyData.Data,
-                key_.KeyData.Data + key_.KeyData.Length);
+                 key_.KeyData.Data + key_.KeyData.Length);
   return true;
 }
 
-bool RSAPrivateKey::ExportPublicKey(std::vector<uint8>* output) {
+bool RSAPrivateKey::ExportPublicKey(std::vector<uint8>* output) const {
   PrivateKeyInfoCodec private_key_info(true);
   std::vector<uint8> private_key_data;
   private_key_data.assign(key_.KeyData.Data,
                           key_.KeyData.Data + key_.KeyData.Length);
   return (private_key_info.Import(private_key_data) &&
           private_key_info.ExportPublicKeyInfo(output));
 }
 
 }  // namespace crypto