AFC系统中票/卡密钥安全分发方案的应用研究

ON APPLYING SECURE DISTRIBUTION SOLUTION OF TICKET KEYS IN AFC SYSTEM

在城市轨道交通自动售检票系统中,非接触式智能卡已普遍被用作车票介质。为保障乘客票/卡的有序、安全使用,对票/卡的功能密钥和应用密钥进行严格地管理显得尤为重要。基于公共密钥基础设施框架,研究和设计了轨道交通自动售检票系统中票/卡功能密钥的安全分发技术方案,包括加密传输、传输节点认证和票/卡应用密钥自动更新等关键方法及步骤。

Contactless smart cards （ abbreviated as ＂CSC＂ ） have been popularly used as ticket media in automatic fare collection （ abbreviated as ＂AFC＂ ） system of urban rail transit. It is especially important that the function keys and application keys of the tickets are strictly managed in order to ensure the usage of passengers＇ tickets is in order and secure. A technical solution of secure distribution of ticket function keys for AFC system in rail transit has been studied and designed in this paper based on public key infrastructure （ abbreviated as ＂PKI＂ ） framework,including pivotal methods and steps for encryption transmission, transmission nodes authentication, automatic updating the application keys of tickets, etc.