net/quic/p2p/quic_p2p_crypto_config.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef NET_QUIC_P2P_QUIC_P2P_CRYPTO_CONFIG_H_
   6 #define NET_QUIC_P2P_QUIC_P2P_CRYPTO_CONFIG_H_
   7
   8 #include <string>
   9
  10 #include "net/quic/crypto/crypto_protocol.h"
  11
  12 namespace net {
  13
  14 struct QuicCryptoNegotiatedParameters;
  15
  16 // Crypto configuration for P2P sessions.
  17 class NET_EXPORT QuicP2PCryptoConfig {
  18  public:
  19   // |shared_key| specifies a key that's used to generate crypto keys. The key
  20   // must be exchanged out-of-bound when the P2P transport is negotiated.
  21   QuicP2PCryptoConfig(const std::string& shared_key);
  22   ~QuicP2PCryptoConfig();
  23
  24   void set_aead(QuicTag aead) { aead_ = aead; }
  25
  26   // Sets suffix for HKDF. E.g. can be channel name to make sure different
  27   // channels use different encryption keys derived from the same |shared_key|.
  28   // Empty by default.
  29   void set_hkdf_input_suffix(const std::string& hkdf_input_suffix) {
  30     hkdf_input_suffix_ = hkdf_input_suffix;
  31   }
  32
  33   bool GetNegotiatedParameters(Perspective perspective,
  34                                QuicCryptoNegotiatedParameters* out_params);
  35
  36  private:
  37   QuicTag aead_ = kAESG;
  38   std::string shared_key_;
  39   std::string hkdf_input_suffix_;
  40 };
  41
  42 }  // namespace net
  43
  44 #endif  // NET_QUIC_P2P_QUIC_P2P_CRYPTO_CONFIG_H_