Security scheme for time-critical TRDP message

CUI Yulong; WU Xuechao; CHENG Youlin; LU Xiang

doi:10.11959/j.issn.2096-109x.2025028

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Security scheme for time-critical TRDP message

Papers | 更新时间：2025-06-30

- Security scheme for time-critical TRDP message
- Chinese Journal of Network and Information Security Vol. 11, Issue 3, Pages: 81-97(2025)
- 作者机构：
  
  1.中车青岛四方机车车辆股份有限公司，山东青岛 266111
  2.中国科学院信息工程研究所，北京 100085
  3.中国科学院大学网络空间安全学院，北京 100049
- 作者简介：
- 基金信息：
  
  CRRC Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. “Train Network Information Security” Research Project
- DOI：10.11959/j.issn.2096-109x.2025028
  CLC： TP393
- Received：14 November 2024，
  
  Revised：2025-03-11，
  
  Published：25 June 2025
- 稿件说明：
移动端阅览
崔玉龙, 吴学超, 程宥霖, 等. 面向时延敏感的TRDP安全防护机制[J]. 网络与信息安全学报, 2025, 11(3): 81-97.

Format: CUI Y L, WU X H, CHENG Y L, et al. Security scheme for time-critical TRDP message[J]. Chinese Journal of Network and Information Security, 2025, 11(3): 81-97.
崔玉龙, 吴学超, 程宥霖, 等. 面向时延敏感的TRDP安全防护机制[J]. 网络与信息安全学报, 2025, 11(3): 81-97. DOI： 10.11959/j.issn.2096-109x.2025028.

Format: CUI Y L, WU X H, CHENG Y L, et al. Security scheme for time-critical TRDP message[J]. Chinese Journal of Network and Information Security, 2025, 11(3): 81-97. DOI： 10.11959/j.issn.2096-109x.2025028.

摘要

随着列车通信技术的发展，列车控制网络的环境愈发复杂，车载设备对网络带宽和网络拓扑复杂度的要求愈发严格，列车互联网的物理层载体逐渐从串行通信总线网过渡到了以太网。为了保证以太网协议栈在列车互联网中的正常运行，结合列车互联网的独特需求，列车通信网络（train communication network，TCN）联盟提出了列车实时数据协议（train real-time data protocol，TRDP），现已成为车载设备数据传输中不可或缺的重要一环。然而，在引入以太网架构的同时，传统计算机网络面临的安全风险也被带入了列车通信网络中。架构在以太网之上的TRDP，缺乏有效的安全防护机制，面临着恶意攻击、数据泄露、拒绝服务等一系列风险。在TRDP的础上，分析了TRDP消息数据、过程数据两种协议模式的区别和安全需求，结合列车互联网的实际情况，选取合适的加密协议，改进了协议细节，设计了基于加密协议的安全防护机制。并在此基础上搭建了一个模型系统，系统展示了如何将这些关键的密码技术组合起来，构建一个安全的列车互联网信息系统，并证明了系统在保证协议安全性的情况下，能够满足列车互联网对TRDP的性能需求。

Abstract

As train communication technology advanced

the environment of train control networks became increasingly complex

with more network bandwidth being demanded by on-board devices and greater complexity emerging in network topology. Consequently

the physical layer carrier for train internet gradually transitioned from serial communication bus networks to Ethernet. To ensure the normal operation of the Ethernet protocol stack in the train internet and meet the unique requirements of the train internet

the TRDP protocol was proposed by the TCN alliance and has now become an essential part of data transmission for on-board devices. However

with the introduction of the Ethernet architecture

traditional computer network security risks were also brought into the train communication network. The TRDP protocol

built upon Ethernet

lacked effective security protection mechanisms and faced a series of risks such as malicious attacks

data leakage

and denial of service. Based on the TRDP protocol

the differences and requirements of its two protocol modes

message data and process data

were analyzed. Suitable encryption protocols in line with the actual situation of the train internet were selected

protocol details were improved

and a security scheme based on encryption protocols was designed. Furthermore

a model system was constructed on this foundation. The system demonstrates how these key security technologies can be combined to build a secure TRDP train information system and proves that it can meet the performance requirements of the train internet for the TRDP protocol while ensuring the security of the protocol.

关键词

Keywords

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