Sign self-signed certs with SHA256.

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 75 matching lines @@
   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;
-  net::x509_util::CreateSelfSignedCert(
+  net::x509_util::CreateSha1SelfSignedCert(
       key_.get(),
       "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