A Concurrent Signature Scheme with Anonymity and Identification

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题名:	A Concurrent Signature Scheme with Anonymity and Identification
作者:	Hwang, Shin-Jia;Hsu, Te-Yu
贡献者:	淡江大學資訊工程學系
关键词:	concurrent signatures;anonymity;identification;privacy;signature schemes
日期:	2010-04
上传时间:	2011-10-05 22:24:00 (UTC+8)
出版者:	臺北市：中華民國電腦學會
摘要:	For the privacy protection, Nguyen first proposed an asymmetric concurrent signature scheme with signers’ anonymity in 2005. Except correctness, unforgeability, and fairness, Nguyen’s scheme satisfies two new properties: Anonymity and unlinkability. To satisfy the anonymity property, Nguyen’s scheme has identification flaw that signers cannot identify each other during the exchange protocol. So an attacker makes use of this flaw to trick signers to exhaust signers’ computation resources. However, the concurrent signature schemes with signers’ ambiguity do not have this identification flaw. So the identification property is defined for the concurrent signature scheme with signers’ anonymity. Then our asymmetric concurrent scheme is proposed to provide both anonymity and identification. Our improved scheme satisfies identification, anonymity, and unlinkability at the same time. With identification, anonymity, and unlinkability, the signers’ privacy is protected well without flaws.
關聯:	電腦學刊=Journal of Computers 21(1)，頁57-73
显示于类别:	[資訊工程學系暨研究所] 期刊論文

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