Cryptanalysis of an inter-bank E-payment protocol based on quantum proxy blind signature

Authors:
Xiao-Qiu Cai;Chun-Yan Wei
Affiliations:
School of Mathematical Science, Luoyang Normal University, Luoyang, China 471022 and State Key Laboratory of Information Security, Graduate University of Chinese Academy of Sciences, Beijing, Chin ...;School of Mathematical Science, Luoyang Normal University, Luoyang, China 471022
Venue:
Quantum Information Processing
Year:
2013

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Abstract

We analyze the security of an inter-bank E-payment protocol based on quantum proxy blind signature, and find that there is a security leak in the quantum channels of this protocol, which gives a chance for an outside opponent to launch a special denial-of-service attack. Furthermore, we show that the dishonest merchant can succeed to change the purchase information of the customer in this protocol.