Move shared files in net/quic/ into net/quic/core/

net/quic/crypto/quic_decrypter.h

-// 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.
-
-#ifndef NET_QUIC_CRYPTO_QUIC_DECRYPTER_H_
-#define NET_QUIC_CRYPTO_QUIC_DECRYPTER_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include "net/base/net_export.h"
-#include "net/quic/quic_protocol.h"
-
-namespace net {
-
-class NET_EXPORT_PRIVATE QuicDecrypter {
- public:
-  virtual ~QuicDecrypter() {}
-
-  static QuicDecrypter* Create(QuicTag algorithm);
-
-  // Sets the encryption key. Returns true on success, false on failure.
-  //
-  // NOTE: The key is the client_write_key or server_write_key derived from
-  // the master secret.
-  virtual bool SetKey(base::StringPiece key) = 0;
-
-  // Sets the fixed initial bytes of the nonce. Returns true on success,
-  // false on failure.
-  //
-  // NOTE: The nonce prefix is the client_write_iv or server_write_iv
-  // derived from the master secret. A 64-bit packet number will
-  // be appended to form the nonce.
-  //
-  //                          <------------ 64 bits ----------->
-  //   +---------------------+----------------------------------+
-  //   |    Fixed prefix     |      packet number      |
-  //   +---------------------+----------------------------------+
-  //                          Nonce format
-  //
-  // The security of the nonce format requires that QUIC never reuse a
-  // packet number, even when retransmitting a lost packet.
-  virtual bool SetNoncePrefix(base::StringPiece nonce_prefix) = 0;
-
-  // Sets the encryption key. Returns true on success, false on failure.
-  // |DecryptPacket| may not be called until |SetDiversificationNonce| is
-  // called and the preliminary keying material will be combined with that
-  // nonce in order to create the actual key and nonce-prefix.
-  //
-  // If this function is called, neither |SetKey| nor |SetNoncePrefix| may be
-  // called.
-  virtual bool SetPreliminaryKey(base::StringPiece key) = 0;
-
-  // SetDiversificationNonce uses |nonce| to derive final keys based on the
-  // input keying material given by calling |SetPreliminaryKey|.
-  //
-  // Calling this function is a no-op if |SetPreliminaryKey| hasn't been
-  // called.
-  virtual bool SetDiversificationNonce(DiversificationNonce nonce) = 0;
-
-  // Populates |output| with the decrypted |ciphertext| and populates
-  // |output_length| with the length.  Returns 0 if there is an error.
-  // |output| size is specified by |max_output_length| and must be
-  // at least as large as the ciphertext.  |packet_number| is
-  // appended to the |nonce_prefix| value provided in SetNoncePrefix()
-  // to form the nonce.
-  // TODO(wtc): add a way for DecryptPacket to report decryption failure due
-  // to non-authentic inputs, as opposed to other reasons for failure.
-  virtual bool DecryptPacket(QuicPathId path_id,
-                             QuicPacketNumber packet_number,
-                             base::StringPiece associated_data,
-                             base::StringPiece ciphertext,
-                             char* output,
-                             size_t* output_length,
-                             size_t max_output_length) = 0;
-
-  // The name of the cipher.
-  virtual const char* cipher_name() const = 0;
-  // The ID of the cipher. Return 0x03000000 ORed with the 'cryptographic suite
-  // selector'.
-  virtual uint32_t cipher_id() const = 0;
-
-  // For use by unit tests only.
-  virtual base::StringPiece GetKey() const = 0;
-  virtual base::StringPiece GetNoncePrefix() const = 0;
-
-  static void DiversifyPreliminaryKey(base::StringPiece preliminary_key,
-                                      base::StringPiece nonce_prefix,
-                                      DiversificationNonce nonce,
-                                      size_t key_size,
-                                      size_t nonce_prefix_size,
-                                      std::string* out_key,
-                                      std::string* out_nonce_prefix);
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_CRYPTO_QUIC_DECRYPTER_H_