Subway Single Journey Ticket Security Solution for Ultralight Cards
Yanxiang Yu · Computer Communications · 2007
As a result of the price factor,some domestic subway AFC(Automatic Fare Collection) systems select Mifare Ultralight cards as single journey tickets in China. Ultralight is a memory card and has no safety mechanism,and thus is easy to be counterfeited.In this article,an authentication method of single journey ticket for Ultralight cards was presented.This method can prevent explaining the key and rapidly replace the transaction key safely through a special purpose installment based on PKI(Public Key Infrastructure),which is used for transaction key transmission,saving,and computation.