Generalize crypto::SignatureCreator to allow choice of hash function, so as to support SHA256 (not …

remoting/base/rsa_key_pair.cc

 // Copyright (c) 2012 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 "remoting/base/rsa_key_pair.h"
 
 #include <limits>
 #include <string>
 #include <vector>
 
@@ skipping 60 matching lines @@
   std::vector<uint8> public_key;
   CHECK(key_->ExportPublicKey(&public_key));
   std::string public_key_str(public_key.begin(), public_key.end());
   std::string public_key_base64;
   base::Base64Encode(public_key_str, &public_key_base64);
   return public_key_base64;
 }
 
 std::string RsaKeyPair::SignMessage(const std::string& message) const {
   scoped_ptr<crypto::SignatureCreator> signature_creator(
-      crypto::SignatureCreator::Create(key_.get()));
+      crypto::SignatureCreator::Create(key_.get(),
+                                       crypto::SignatureCreator::SHA1));
   signature_creator->Update(reinterpret_cast<const uint8*>(message.c_str()),
                             message.length());
   std::vector<uint8> signature_buf;
   signature_creator->Final(&signature_buf);
   std::string signature_str(signature_buf.begin(), signature_buf.end());
   std::string signature_base64;
   base::Base64Encode(signature_str, &signature_base64);
   return signature_base64;
 }
 
 std::string RsaKeyPair::GenerateCertificate() const {
   std::string der_cert;
   // Certificates are SHA1-signed because |key_| has likely been used to sign
   // with SHA1 previously, and you should not re-use a key for signing data with
   // multiple signature algorithms.
   net::x509_util::CreateSelfSignedCert(
       key_.get(),
       net::x509_util::DIGEST_SHA1,
       "CN=chromoting",
       base::RandInt(1, std::numeric_limits<int>::max()),
       base::Time::Now(),
       base::Time::Now() + base::TimeDelta::FromDays(1),
       &der_cert);
   return der_cert;
 }
 
 }  // namespace remoting