fido_cable_handshake_handler.cc | Explore in Territory

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "device/fido/cable/fido_cable_handshake_handler.h"

#include <string_view>
#include <tuple>
#include <utility>

#include "base/containers/map_util.h"
#include "base/containers/span.h"
#include "base/functional/bind.h"
#include "base/ranges/algorithm.h"
#include "base/strings/string_number_conversions.h"
#include "base/task/single_thread_task_runner.h"
#include "components/cbor/reader.h"
#include "components/cbor/values.h"
#include "components/cbor/writer.h"
#include "components/device_event_log/device_event_log.h"
#include "crypto/aead.h"
#include "crypto/hkdf.h"
#include "crypto/hmac.h"
#include "crypto/random.h"
#include "crypto/sha2.h"
#include "device/fido/cable/fido_cable_device.h"
#include "device/fido/cable/noise.h"
#include "device/fido/cable/v2_handshake.h"
#include "device/fido/fido_constants.h"
#include "device/fido/fido_parsing_utils.h"
#include "third_party/boringssl/src/include/openssl/digest.h"
#include "third_party/boringssl/src/include/openssl/ec_key.h"
#include "third_party/boringssl/src/include/openssl/ecdh.h"
#include "third_party/boringssl/src/include/openssl/hkdf.h"
#include "third_party/boringssl/src/include/openssl/obj.h"
#include "third_party/boringssl/src/include/openssl/sha.h"

namespace device {

namespace {

// Length of CBOR encoded authenticator hello message concatenated with
// 16 byte message authentication code.
constexpr size_t kCableAuthenticatorHandshakeMessageSize = …;

// Length of CBOR encoded client hello message concatenated with 16 byte message
// authenticator code.
constexpr size_t kClientHelloMessageSize = …;

constexpr size_t kCableHandshakeMacMessageSize = …;

std::optional<std::array<uint8_t, kClientHelloMessageSize>>
ConstructHandshakeMessage(std::string_view handshake_key,
                          base::span<const uint8_t, 16> client_random_nonce) { … }

}  // namespace

FidoCableHandshakeHandler::~FidoCableHandshakeHandler() { … }

FidoCableV1HandshakeHandler::FidoCableV1HandshakeHandler(
    FidoCableDevice* cable_device,
    base::span<const uint8_t, 8> nonce,
    base::span<const uint8_t, 32> session_pre_key)
    : … { … }

FidoCableV1HandshakeHandler::~FidoCableV1HandshakeHandler() = default;

void FidoCableV1HandshakeHandler::InitiateCableHandshake(
    FidoDevice::DeviceCallback callback) { … }

bool FidoCableV1HandshakeHandler::ValidateAuthenticatorHandshakeMessage(
    base::span<const uint8_t> response) { … }

std::vector<uint8_t>
FidoCableV1HandshakeHandler::GetEncryptionKeyAfterSuccessfulHandshake(
    base::span<const uint8_t, 16> authenticator_random_nonce) const { … }

}  // namespace device
chromium/device/fido/cable/fido_cable_handshake_handler.cc
