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A dynamic mobile services access and payment platform with reusable tickets for mobile communication networks

The next generation mobile systems provide high speed data transferring rate to mobile devices. And it is crucial to integrate together two critical issues, the authentication and roaming in heterogeneous networks. For this, Lei et al. proposed the mobile services access and payment mechanism for the next generation mobile systems recently. Their scheme provides a lightweight service access mechanism in which the computation complexity is low on mobile devices. Unfortunately, we found that their scheme suffers from the personal privacy problem. In this paper, we propose an improved version which is lightweight, practical, and likely to avoid re-initialization. When a user roams in heterogeneous networks, he can utilize the delegation reusable ticket to achieve mutual authentication and non-repudiation. Our proposed scheme provides the better efficiency for users in mobile systems.