Added HostKeyPair class, signatures for heartbeat messages.

remoting/host/host_key_pair.h

Index: remoting/host/host_key_pair.h
diff --git a/remoting/host/host_key_pair.h b/remoting/host/host_key_pair.h
new file mode 100644
index 0000000000000000000000000000000000000000..92ee4aaa6398e27fc8c6fc2e107b5114c0b976b6
--- /dev/null
+++ b/remoting/host/host_key_pair.h
@@ -0,0 +1,46 @@
+// Copyright (c) 2010 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 REMOTING_HOST_HOST_KEY_PAIR_H_
+#define REMOTING_HOST_HOST_KEY_PAIR_H_
+
+#include <string>
+
+#include "base/ref_counted.h"
+#include "base/scoped_ptr.h"
+#include "base/task.h"
+
+namespace base {
+class RSAPrivateKey;
+}  // namespace base
+
+namespace remoting {
+
+class HostConfig;
+class MutableHostConfig;
+
+class HostKeyPair {
+ public:
+  HostKeyPair();
+  ~HostKeyPair();
+
+  void Generate();
+  bool LoadFromString(const std::string& key_base64);
+  bool Load(HostConfig* host_config);
+  void Save(MutableHostConfig* host_config);
+
+  std::string GetPublicKey() const;
+  std::string GetSignature(const std::string& message) const;
+
+ private:
+  void DoSave(MutableHostConfig* host_config) const;
+
+  scoped_ptr<base::RSAPrivateKey> key_;
+};
+
+}  // namespace remoting
+
+DISABLE_RUNNABLE_METHOD_REFCOUNT(remoting::HostKeyPair);
+
+#endif  // REMOTING_HOST_HOST_KEY_PAIR_H_