Herein, the security of online purchase is guaranteed and even if the seller gets the current
security code, it is still invalid to use the code during next purchase. Besides, along with the
growing popularity of mobile devices, such authentication is feasible and helps to provide the
multi-authentication schema, which is the trend of online payments. The rest of this paper is
organized as below. Section 2 provides a brief introduction of the VSS technique. Detailed
description of the whole payment system is provided in Section3, followed by the experiments
and results in Section 4. Section 5 gives out the analysis and proof for a list of potential attacks,
and we conclude our work in Section 6.