text: // Copyright (c) 2017 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 QUICHE_QUIC_CORE_CRYPTO_AES_128_GCM_ENCRYPTER_H_
  #define QUICHE_QUIC_CORE_CRYPTO_AES_128_GCM_ENCRYPTER_H_
  
  #include "net/third_party/quiche/src/quic/core/crypto/aes_base_encrypter.h"
  #include "net/third_party/quiche/src/quic/platform/api/quic_export.h"
  
  namespace quic {
  
  // An Aes128GcmEncrypter is a QuicEncrypter that implements the
  // AEAD_AES_128_GCM algorithm specified in RFC 5116 for use in IETF QUIC.
  //
  // It uses an authentication tag of 16 bytes (128 bits). It uses a 12 byte IV
  // that is XOR'd with the packet number to compute the nonce.
  class QUIC_EXPORT_PRIVATE Aes128GcmEncrypter : public AesBaseEncrypter {
   public:
    enum {
      kAuthTagSize = 16,
    };
  
    Aes128GcmEncrypter();
    Aes128GcmEncrypter(const Aes128GcmEncrypter&) = delete;
    Aes128GcmEncrypter& operator=(const Aes128GcmEncrypter&) = delete;
    ~Aes128GcmEncrypter() override;
  };
  
  }  // namespace quic
  
  #endif  // QUICHE_QUIC_CORE_CRYPTO_AES_128_GCM_ENCRYPTER_H_
  