1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// Copyright (c) 2013 The Chromium Authors. All rights reserved. 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// Use of this source code is governed by a BSD-style license that can be 3f5256e16dfc425c1d466f6308d4026d529ce9e0bHoward Hinnant// found in the LICENSE file. 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant#ifndef NET_QUIC_CRYPTO_AES_128_GCM_12_ENCRYPTER_H_ 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant#define NET_QUIC_CRYPTO_AES_128_GCM_12_ENCRYPTER_H_ 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include "net/quic/crypto/aead_base_encrypter.h" 9bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 10bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantnamespace net { 11bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// An Aes128Gcm12Encrypter is a QuicEncrypter that implements the 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// AEAD_AES_128_GCM_12 algorithm specified in RFC 5282. Create an instance by 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// calling QuicEncrypter::Create(kAESG). 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// It uses an authentication tag of 12 bytes (96 bits). The fixed prefix 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// of the nonce is four bytes. 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantclass NET_EXPORT_PRIVATE Aes128Gcm12Encrypter : public AeadBaseEncrypter { 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant public: 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant enum { 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant // Authentication tags are truncated to 96 bits. 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant kAuthTagSize = 12, 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant }; 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant Aes128Gcm12Encrypter(); 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant virtual ~Aes128Gcm12Encrypter(); 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#if !defined(USE_OPENSSL) 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant protected: 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant // AeadBaseEncrypter methods: 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant virtual void FillAeadParams(base::StringPiece nonce, 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant base::StringPiece associated_data, 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant size_t auth_tag_size, 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant AeadParams* aead_params) const OVERRIDE; 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#endif 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant private: 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant DISALLOW_COPY_AND_ASSIGN(Aes128Gcm12Encrypter); 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant}; 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 41bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} // namespace net 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#endif // NET_QUIC_CRYPTO_AES_128_GCM_12_ENCRYPTER_H_ 44bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant