An E-payment Protocol Based on Quantum Multi-proxy Blind Signature

Based on quantum multi-proxy blind signature, a new E-payment protocol is proposed in this paper. Adopting the techniques of quantum key distribution, one-time pad and quantum proxy blind signature, our E-payment protocol could protect user’s anonymity as the traditional E-payment systems do, and also have unconditional security which the classical E-payment systems cannot provide. Additionally, the quantum operation can be transmitted successfully with the probability 1, which can make the protocol reliable and practical.