Implement RSAPrivateKey::Copy()

crypto/rsa_private_key_nss.cc

Index: crypto/rsa_private_key_nss.cc
diff --git a/crypto/rsa_private_key_nss.cc b/crypto/rsa_private_key_nss.cc
index cd1f9203f3517b1cbe4451ab9700803d52c055fd..3b8bd4489a2446265d54cebe845b5fe1947ffc29 100644
--- a/crypto/rsa_private_key_nss.cc
+++ b/crypto/rsa_private_key_nss.cc
@@ -138,8 +138,14 @@ RSAPrivateKey* RSAPrivateKey::FindFromPublicKeyInfo(
   return NULL;
 }
 
+RSAPrivateKey* RSAPrivateKey::Copy() const {
+  RSAPrivateKey* copy = new RSAPrivateKey();
+  copy->key_ = SECKEY_CopyPrivateKey(key_);
+  copy->public_key_ = SECKEY_CopyPublicKey(public_key_);
+  return copy;
+}
 
-bool RSAPrivateKey::ExportPrivateKey(std::vector<uint8>* output) {
+bool RSAPrivateKey::ExportPrivateKey(std::vector<uint8>* output) const {
   PrivateKeyInfoCodec private_key_info(true);
 
   // Manually read the component attributes of the private key and build up
@@ -161,7 +167,7 @@ bool RSAPrivateKey::ExportPrivateKey(std::vector<uint8>* output) {
   return private_key_info.Export(output);
 }
 
-bool RSAPrivateKey::ExportPublicKey(std::vector<uint8>* output) {
+bool RSAPrivateKey::ExportPublicKey(std::vector<uint8>* output) const {
   ScopedSECItem der_pubkey(SECKEY_EncodeDERSubjectPublicKeyInfo(public_key_));
   if (!der_pubkey.get()) {
     NOTREACHED();