城市轨道交通自动售检票系统(AFC)的安全设计

Secure Design of Automatic Fare Collection(AFC)System for City Rail

随着城市轨道交通网络的复杂化和智能化,城市轨道交通的自动售检票系统(automatic fare collection,AFC)也变得越来越复杂,因此AFC的信息安全保护机制是必不可少的.设计了一种城市轨道交通安全自动售检票系统,通过使用密码学技术,分析了该安全自动售检票系统在对抗假冒攻击、伪造攻击和克隆攻击等方面的能力.该方案还具有很好的可扩展性,其对票卡及其余额验证的计算复杂度不因票卡数量的增加而增加.

With the city rail networks become more and more complex and intelligent,its automatic fare collection(AFC)system also becomes increasingly complicated.Therefore,security protection mechanism of the AFC becomes indispensable.An AFC system for city rail systems is designed in this paper.By using the cryptographic techniques,the designed AFC system is shown to be secure against impersonation attack,forgery attack,and cloning attack.The designed AFC system also has good extensibility,because the computational complexity in verifying the validity of the tickets and their balances does not depend on the number of the tickets.