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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 "net/quic/mock_decrypter.h"
#include <limits>
#include "net/third_party/quiche/src/quic/core/quic_utils.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_bug_tracker.h"
using quic::DiversificationNonce;
using quic::Perspective;
using quic::QuicPacketNumber;
namespace net {
namespace {
const size_t kPaddingSize = 12;
} // namespace
MockDecrypter::MockDecrypter(Perspective perspective) {}
bool MockDecrypter::SetKey(absl::string_view key) {
return key.empty();
}
bool MockDecrypter::SetNoncePrefix(absl::string_view nonce_prefix) {
return nonce_prefix.empty();
}
bool MockDecrypter::SetIV(absl::string_view iv) {
return iv.empty();
}
bool MockDecrypter::SetHeaderProtectionKey(absl::string_view key) {
return key.empty();
}
size_t MockDecrypter::GetKeySize() const {
return 0;
}
size_t MockDecrypter::GetIVSize() const {
return 0;
}
size_t MockDecrypter::GetNoncePrefixSize() const {
return 0;
}
bool MockDecrypter::SetPreliminaryKey(absl::string_view key) {
QUIC_BUG << "Should not be called";
return false;
}
bool MockDecrypter::SetDiversificationNonce(const DiversificationNonce& nonce) {
QUIC_BUG << "Should not be called";
return true;
}
bool MockDecrypter::DecryptPacket(uint64_t /*packet_number*/,
absl::string_view associated_data,
absl::string_view ciphertext,
char* output,
size_t* output_length,
size_t max_output_length) {
if (ciphertext.length() < kPaddingSize) {
return false;
}
size_t plaintext_size = ciphertext.length() - kPaddingSize;
if (plaintext_size > max_output_length) {
return false;
}
memcpy(output, ciphertext.data(), plaintext_size);
*output_length = plaintext_size;
return true;
}
std::string MockDecrypter::GenerateHeaderProtectionMask(
quic::QuicDataReader* sample_reader) {
return std::string(5, 0);
}
uint32_t MockDecrypter::cipher_id() const {
return 0;
}
quic::QuicPacketCount MockDecrypter::GetIntegrityLimit() const {
return std::numeric_limits<quic::QuicPacketCount>::max();
}
absl::string_view MockDecrypter::GetKey() const {
return absl::string_view();
}
absl::string_view MockDecrypter::GetNoncePrefix() const {
return absl::string_view();
}
} // namespace net
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