A Multi-bank E-Payment Protocol Based on Quantum Proxy Blind Signature

A new multi-bank E-payment protocol based on quantum multi-proxy blind signature is presented in this paper. In contrast to classical E-payment protocol, our quantum E-payment protocol can not only protect the user's anonymity but also provide them different options to pay. For instance, when user wants to pay, he can choose Wechat wallet, Alipay or various bank accounts as well. Von-Neumann measurement and unitary operation are adapted in this scheme. Moreover, we use quantum multi-proxy blind signature, quantum key distribution (QKD) protocol and one-time pad in our study. Accordingly, our multi-bank E-payment system could protect user's anonymity and also have unconditional security.