PA-SET: Privacy-aware SET protocol

E-payment is considered a cornerstone in daily e-transactions. There are many proposed e-payment protocols but the majority of such protocols were designed just to satisfy the traditional flow of payment data which increases the users´ risk because of security vulnerabilities and privacy leakage. The Secure Electronic Transaction protocol (SET), a de facto standard, is limited in application due to computation overhead and privacy leakage. In this paper, a new privacy-aware SET enhancement is proposed. The SET protocol is enhanced by hiding the payer´s identity and providing transaction privacy during the whole e-payment process. Privacy protection is achieved for the payer while incurring acceptable overhead as demonstrated by performance evaluation experiments.