A Fair Transaction Model in Mobile Commerce

Mobile communications offer a wide variety of services to people. All mobile subscribers can use a personal trusted device (PTD) to access various resources and conduct their business anytime from anywhere. This feature has contributed greatly to the rapid development of mobile commerce. In fact, the PTD lack of computing resources has become a problem in mobile commerce development. In this paper, we overcome the limited computation power of PTDs and involve a trusted observer to coordinate transactions such that the important computation requirements can still be accomplished. We integrate some cryptology (such as a digital signature, one-way hash function etc.) and propose a mobile commerce protocol based on PTDs that satisfies the security requirements. These requirements include fairness, non-repudiation, anonymity, simplicity, practicality and so on. We propose a simple and reliable mobile transaction protocol that is independent of specific payment system