Arbitrated quantum signature of classical messages without using authenticated classical channels

Authors:
Yi-Ping Luo;Tzonelih Hwang
Affiliations:
Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, ROC 70101;Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, ROC 70101
Venue:
Quantum Information Processing
Year:
2014

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Abstract

This paper points out design confusion existing in all the arbitrated quantum signatures (AQS) that require public discussions over authenticated classical channels. Instead, an AQS scheme of classical messages without using authenticated classical channels is proposed here. A cryptographic hash function is used in combine with quantum mechanics to check the existence of an eavesdropping or to verify a signature. In addition, by using only single photons, this scheme provides higher efficiency both in quantum transmissions and generations. The proposed AQS scheme is shown to be immune to several well-known attacks, i.e., the Trojan-horse attacks and the existential forgery attack.