1// Copyright (c) 2013 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_CRYPTO_AES_128_GCM_12_ENCRYPTER_H_ 6#define NET_QUIC_CRYPTO_AES_128_GCM_12_ENCRYPTER_H_ 7 8#include "net/quic/crypto/aead_base_encrypter.h" 9 10namespace net { 11 12// An Aes128Gcm12Encrypter is a QuicEncrypter that implements the 13// AEAD_AES_128_GCM_12 algorithm specified in RFC 5282. Create an instance by 14// calling QuicEncrypter::Create(kAESG). 15// 16// It uses an authentication tag of 12 bytes (96 bits). The fixed prefix 17// of the nonce is four bytes. 18class NET_EXPORT_PRIVATE Aes128Gcm12Encrypter : public AeadBaseEncrypter { 19 public: 20 enum { 21 // Authentication tags are truncated to 96 bits. 22 kAuthTagSize = 12, 23 }; 24 25 Aes128Gcm12Encrypter(); 26 virtual ~Aes128Gcm12Encrypter(); 27 28#if !defined(USE_OPENSSL) 29 protected: 30 // AeadBaseEncrypter methods: 31 virtual void FillAeadParams(base::StringPiece nonce, 32 base::StringPiece associated_data, 33 size_t auth_tag_size, 34 AeadParams* aead_params) const OVERRIDE; 35#endif 36 37 private: 38 DISALLOW_COPY_AND_ASSIGN(Aes128Gcm12Encrypter); 39}; 40 41} // namespace net 42 43#endif // NET_QUIC_CRYPTO_AES_128_GCM_12_ENCRYPTER_H_ 44