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// 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_NULL_ENCRYPTER_H_
#define NET_QUIC_CRYPTO_NULL_ENCRYPTER_H_
#include "base/compiler_specific.h"
#include "net/base/net_export.h"
#include "net/quic/crypto/quic_encrypter.h"
namespace net {
// A NullEncrypter is a QuicEncrypter used before a crypto negotiation
// has occurred. It does not actually encrypt the payload, but does
// generate a MAC (fnv128) over both the payload and associated data.
class NET_EXPORT_PRIVATE NullEncrypter : public QuicEncrypter {
public:
NullEncrypter();
~NullEncrypter() override {}
// QuicEncrypter implementation
bool SetKey(base::StringPiece key) override;
bool SetNoncePrefix(base::StringPiece nonce_prefix) override;
bool EncryptPacket(QuicPacketNumber packet_number,
base::StringPiece associated_data,
base::StringPiece plaintext,
char* output,
size_t* output_length,
size_t max_output_length) override;
size_t GetKeySize() const override;
size_t GetNoncePrefixSize() const override;
size_t GetMaxPlaintextSize(size_t ciphertext_size) const override;
size_t GetCiphertextSize(size_t plaintext_size) const override;
base::StringPiece GetKey() const override;
base::StringPiece GetNoncePrefix() const override;
private:
size_t GetHashLength() const;
DISALLOW_COPY_AND_ASSIGN(NullEncrypter);
};
} // namespace net
#endif // NET_QUIC_CRYPTO_NULL_ENCRYPTER_H_
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