On the security of arbitrated quantum signature schemes

Qin LI, Chengqing LI, Zhonghua WEN, Weizhong ZHAO, Wai Hong CHAN

Research output: Contribution to journalArticlespeer-review

18 Citations (Scopus)


Due to the potential capability of providing unconditional security, arbitrated quantum signature (AQS) schemes, whose implementation depends on the participation of a trusted third party, received intense attention in the past decade. Recently, some typical AQS schemes were cryptanalyzed and improved. In this paper, we analyze the security property of some AQS schemes and show that all the previous AQS schemes, no matter whether original or improved, are still insecure in the sense that the messages and the corresponding signatures can be exchanged among different receivers, allowing the receivers to deny having accepted the signature of an appointed message. Some further improved methods on the AQS schemes are also discussed. Copyright © 2013 IOP Publishing Ltd.
Original languageEnglish
Article number015307
JournalJournal of Physics A: Mathematical and Theoretical
Early online dateDec 2012
Publication statusPublished - Jan 2013


Li, Q., Li, C., Wen, Z., Zhao, W., & Chan, W. H. (2013). On the security of arbitrated quantum signature schemes. Journal of Physics A: Mathematical and Theoretical, 46, 015307.


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