Implement RSAPrivateKey::Copy()

crypto/rsa_private_key.h

 // 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.
 
 #ifndef CRYPTO_RSA_PRIVATE_KEY_H_
 #define CRYPTO_RSA_PRIVATE_KEY_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 205 matching lines @@
   SECKEYPrivateKeyStr* key() { return key_; }
   SECKEYPublicKeyStr* public_key() { return public_key_; }
 #elif defined(OS_WIN)
   HCRYPTPROV provider() { return provider_; }
   HCRYPTKEY key() { return key_; }
 #elif defined(OS_MACOSX)
   CSSM_KEY_PTR key() { return &key_; }
   CSSM_KEY_PTR public_key() { return &public_key_; }
 #endif
 
+  // Creates a copy of the object.
+  RSAPrivateKey* Copy() const;
+
   // Exports the private key to a PKCS #1 PrivateKey block.
-  bool ExportPrivateKey(std::vector<uint8>* output);
+  bool ExportPrivateKey(std::vector<uint8>* output) const;
 
   // Exports the public key to an X509 SubjectPublicKeyInfo block.
-  bool ExportPublicKey(std::vector<uint8>* output);
+  bool ExportPublicKey(std::vector<uint8>* output) const;
 
  private:
 #if defined(USE_NSS)
   FRIEND_TEST_ALL_PREFIXES(RSAPrivateKeyNSSTest, FindFromPublicKey);
   FRIEND_TEST_ALL_PREFIXES(RSAPrivateKeyNSSTest, FailedFindFromPublicKey);
 #endif
 
   // Constructor is private. Use one of the Create*() or Find*()
   // methods above instead.
   RSAPrivateKey();
@@ skipping 24 matching lines @@
   CSSM_KEY key_;
   CSSM_KEY public_key_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(RSAPrivateKey);
 };
 
 }  // namespace crypto
 
 #endif  // CRYPTO_RSA_PRIVATE_KEY_H_