Ticket-based service access scheme for mobile users
ACSC '02 Proceedings of the twenty-fifth Australasian conference on Computer science - Volume 4
Group signatures with verifier-local revocation
Proceedings of the 11th ACM conference on Computer and communications security
A Privacy Enhancing Service Architecture for Ticket-based Mobile Applications
ARES '07 Proceedings of the The Second International Conference on Availability, Reliability and Security
Secure Communication between Web Browsers and NFC Targets by the Example of an e-Ticketing System
EC-Web '08 Proceedings of the 9th international conference on E-Commerce and Web Technologies
Privacy for public transportation
PET'06 Proceedings of the 6th international conference on Privacy Enhancing Technologies
Ensuring privacy in smartcard-based payment systems: a case study of public metro transit systems
CMS'06 Proceedings of the 10th IFIP TC-6 TC-11 international conference on Communications and Multimedia Security
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Automatic Fare Collection (AFC) systems calculate the fare that the user must pay which depends on the points of entrance and exit of the system. These systems were paper-based, but the progressive introduction of Information and Communication Technologies (ICT) allows the use of electronic tickets which helps to reduce costs and it improves the control of the infrastructures. Nevertheless, these systems must be secure against possible fraud, and they must also preserve users' privacy. We propose an AFC system that offers strong privacy for honest users. The service provider can not disclose the identity of its users and, moreover, different journeys of the same user are unlinkable. However, anonymity for users could be revoked if they misbehave. This system has been designed in order to use personal mobile devices.