Implement RSAPrivateKey::Copy()

crypto/rsa_private_key_openssl.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 <openssl/evp.h>
 #include <openssl/pkcs12.h>
 #include <openssl/rsa.h>
 
@@ skipping 106 matching lines @@
 
 RSAPrivateKey::RSAPrivateKey()
     : key_(NULL) {
 }
 
 RSAPrivateKey::~RSAPrivateKey() {
   if (key_)
     EVP_PKEY_free(key_);
 }
 
+RSAPrivateKey* RSAPrivateKey::Copy() const {
+  scoped_ptr<RSAPrivateKey> copy(new RSAPrivateKey());
+  RSA* rsa = EVP_PKEY_get1_RSA(key_);
+  if (!rsa)
+    return NULL;
+  copy->key_ = EVP_PKEY_new();
+  if (!EVP_PKEY_set1_RSA(copy->key_, rsa))
+    return NULL;
+  return copy.release();
+}
+
 bool RSAPrivateKey::ExportPrivateKey(std::vector<uint8>* output) {
   return ExportKey(key_, i2d_PKCS8PrivateKeyInfo_bio, output);
 }
 
 bool RSAPrivateKey::ExportPublicKey(std::vector<uint8>* output) {
   return ExportKey(key_, i2d_PUBKEY_bio, output);
 }
 
 }  // namespace crypto