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// Copyright 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.
#include <cstddef>
#include <cstdint>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "net/third_party/quiche/src/quic/core/crypto/quic_decrypter.h"
#include "net/third_party/quiche/src/quic/core/quic_types.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_export.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_string_piece.h"
namespace net {
// A MockDecrypter is a QuicDecrypter that strips the last 12 bytes of
// ciphertext (which should be zeroes, but are ignored), and returns the
// remaining ciphertext untouched and ignores the associated data. This is used
// to allow fuzzing to mutate plaintext packets.
class MockDecrypter : public quic::QuicDecrypter {
explicit MockDecrypter(quic::Perspective perspective);
~MockDecrypter() override {}
// QuicDecrypter implementation
bool SetKey(quic::QuicStringPiece key) override;
bool SetNoncePrefix(quic::QuicStringPiece nonce_prefix) override;
bool SetHeaderProtectionKey(quic::QuicStringPiece key) override;
bool SetIV(quic::QuicStringPiece iv) override;
bool SetPreliminaryKey(quic::QuicStringPiece key) override;
bool SetDiversificationNonce(
const quic::DiversificationNonce& nonce) override;
bool DecryptPacket(uint64_t packet_number,
quic::QuicStringPiece associated_data,
quic::QuicStringPiece ciphertext,
char* output,
size_t* output_length,
size_t max_output_length) override;
size_t GetKeySize() const override;
size_t GetNoncePrefixSize() const override;
size_t GetIVSize() const override;
quic::QuicStringPiece GetKey() const override;
quic::QuicStringPiece GetNoncePrefix() const override;
std::string GenerateHeaderProtectionMask(
quic::QuicDataReader* sample_reader) override;
uint32_t cipher_id() const override;
} // namespace net