Optimization Study for Lightweight Set Protocol

As an important part of the e-commerce, the Internet-based electronic trading has caused widespread concern. SET transaction is the key factor of electronic trading and its process is very complicated. In this paper, SET protocol is focused, which consists of purchase request, payment verification and secure payment. First, the trade process is classified according to the different transaction amount, and then the lightweight transaction process is optimized and SPIN model of SET protocol is tested. Finally, the SET protocol is improved according to the simulation and testing results.