Land Recent QUIC changes.

net/quic/crypto/channel_id.h

+// Copyright (c) 2013 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 NET_QUIC_CRYPTO_CHANNEL_ID_H_
+#define NET_QUIC_CRYPTO_CHANNEL_ID_H_
+
+#include <string>
+
+#include "base/strings/string_piece.h"
+#include "net/base/net_export.h"
+
+namespace net {
+
+// ChannelIDSigner is an abstract interface that implements signing by
+// ChannelID keys.
+class NET_EXPORT_PRIVATE ChannelIDSigner {
+ public:
+  virtual ~ChannelIDSigner() { }
+
+  // Sign signs |signed_data| using the ChannelID key for |hostname| and puts
+  // the serialized public key into |out_key| and the signature into
+  // |out_signature|. It returns true on success.
+  virtual bool Sign(const std::string& hostname,
+                    base::StringPiece signed_data,
+                    std::string* out_key,
+                    std::string* out_signature) = 0;
+};
+
+// ChannelIDVerifier verifies ChannelID signatures.
+class NET_EXPORT_PRIVATE ChannelIDVerifier {
+ public:
+  // kContextStr is prepended to the data to be signed in order to ensure that
+  // a ChannelID signature cannot be used in a different context. (The
+  // terminating NUL byte is inclued.)
+  static const char kContextStr[];
+  // kClientToServerStr follows kContextStr to specify that the ChannelID is
+  // being used in the client to server direction. (The terminating NUL byte is
+  // included.)
+  static const char kClientToServerStr[];
+
+  // Verify returns true iff |signature| is a valid signature of |signed_data|
+  // by |key|.
+  static bool Verify(base::StringPiece key,
+                     base::StringPiece signed_data,
+                     base::StringPiece signature);
+};
+
+}  // namespace net
+
+#endif  // NET_QUIC_CRYPTO_CHANNEL_ID_H_