摘要： 改进铁路信号安全通信协议II(RSSP-II)中的ER层消息验证码(MAC)算法，将高级加密标准作为MAC的核心算法，使用密文分组链接方式对报文加解密，并将其运用到CTCS-3列控系统临时限速服务器测试平台的RSSP-II仿真测试中。结果表明，改进算法能够克服原算法存在的弱密钥、半弱密钥等安全隐患，具有更强的安全性与实时性。

关键词: 铁路信号安全通信协议II, 数据加密标准, 高级加密标准, 密文分组链接, 消息验证码

Abstract: To improve Message Authentication Code(MAC) algorithm of ER in Railway Signal Safety Communication Protocol II(RSSP-II), an improved MAC algorithm using Advanced Encryption Standard(AES) as core algorithm and Cipher Block Chaining(CBC) as encryption and decryption method is put forward. The proposed method will be applied to RSSP-II simulation test in TSRS test platform of CTCS-3, whose results show that the improved algorithm conquers such safety problems as weak key and semi weak key, thus having more advantage in safety and real-time compared.

Key words: Railway Signal Safety Communication Protocol II(RSSP-II), Data Encryption Standard(DES), Advanced Encryption Standard(AES), Cipher Block Chaining(CBC), Message Authentication Code(MAC)

中图分类号: 

• TP393