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// 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_256_GCM_DECRYPTER_H_
#define QUICHE_QUIC_CORE_CRYPTO_AES_256_GCM_DECRYPTER_H_
#include <cstdint>
#include "quic/core/crypto/aes_base_decrypter.h"
#include "quic/platform/api/quic_export.h"
namespace quic {
// An Aes256GcmDecrypter is a QuicDecrypter that implements the
// AEAD_AES_256_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 Aes256GcmDecrypter : public AesBaseDecrypter {
public:
enum {
kAuthTagSize = 16,
};
Aes256GcmDecrypter();
Aes256GcmDecrypter(const Aes256GcmDecrypter&) = delete;
Aes256GcmDecrypter& operator=(const Aes256GcmDecrypter&) = delete;
~Aes256GcmDecrypter() override;
uint32_t cipher_id() const override;
};
} // namespace quic
#endif // QUICHE_QUIC_CORE_CRYPTO_AES_256_GCM_DECRYPTER_H_