A Security and Privacy Preserving E-Prescription System Based on Smart Cards

In 2002, Ateniese and Medeiros proposed an e-prescription system, in which the patient can store e-prescription and related information using smart card. Latter, Yang et al. proposed a novel e-prescription system based on Ateniese and Medeiros's system in 2004. Yang et al. adopted the concept of a group signature to provide privacy protection and a proxy signature to deal with patient's delegation. However, this paper will point out some drawbacks of Yang et al.'s system. We further propose a security and privacy preserving e-prescription system model based on smart cards, and then present a concrete ID-based group signature scheme and a proxy signature scheme to realize the proposed model. The proposed system is more practical and efficient then Yang et al.'s system in terms of security, communication overheads, computational costs, practical considerations.