铁道标准设计2025，Vol.69Issue(6)：171-177,186,8.DOI:10.13238/j.issn.1004-2954.202308240001
面向5G-R调度通信业务的媒体数据加密方法
Media Data Encryption Method for 5G-R Dispatching Communication Services
摘要
Abstract
Dispatching communication is a critical service for railway operation control and command,and the security of its service data directly affects the safety of railway transportation.5G-R is an IP-based network where service data is transmitted in plaintext as IP packets,posing risks of forgery,eavesdropping,and tampering.To ensure the security and integrity of service data transmission in the 5G-R network,this study proposed a media data encryption method for 5G-R dispatching communication services.First,a key management architecture for the 5G-R dispatching communication system was introduced,clarifying the functions and interfaces of each component.Then,key technologies involved in media data encryption were investigated,including SRTP,MIKEY protocol,and MIKEY-based key distribution mechanism for dispatching communication systems.Finally,the generation and application scenarios of encryption keys for dispatching communication media were summarized and analyzed,and the encryption processes for individual call,group call,short message,and file services were studied.For point-to-point communication,an encryption method based on shared PCK was proposed to generate session keys.For railway group communication scenarios,a group call encryption method based on shared GMK was proposed to generate session keys,along with a hybrid encryption method based on CSK and GMK for group data and files.The proposed encryption methods enable encrypted transmission of media data for dispatching communication services in railway 5G private networks,thereby ensuring the security of critical railway service data.关键词
铁路/5G-R/调度通信/媒体/加密/密钥分发机制Key words
railway/5G-R/dispatching communication/media/encryption/key distribution mecha-nism分类
交通工程引用本文复制引用
李春铎,郭强亮,闫晓宇,蔺伟..面向5G-R调度通信业务的媒体数据加密方法[J].铁道标准设计,2025,69(6):171-177,186,8.基金项目
中国国家铁路集团有限公司科技研究开发计划重大课题(K2022G018) （K2022G018）
中国铁道科学研究院集团有限公司科研项目重点课题(2022YJ191) （2022YJ191）
