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NCUEIR > College of Science > math > Periodical Articles > Item 987654321/12121

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/12121

Title:	A Threshold Signature Scheme Withstanding the Conspiracy Attack
Authors:	Jan, Jinn-Ke;Tseng, Yuh-Min;Chien, Hung-Yu
Contributors:	數學系
Keywords:	Cryptography;Threshold signature;Group-oriented cryptography;Conspiracy attack
Date:	1999
Issue Date:	2012-07-03T03:42:34Z
Publisher:	中華民國資訊學會
Abstract:	A threshold signature, first proposed by Desmedt and Frankel, allows or more members of the group cooperate to generate a signature on behalf of the group while providing the anonymity of the signers. Unfortunately, all threshold signature schemes proposed so far can not withstand the conspiracy attack, thus the group secret key can be revealed. In this paper, we propose a new threshold signature scheme to avoid the conspiracy attack. The security of the proposed threshold signature scheme is based on the difficulty of computing the discrete logarithm modulo for a composite number. The size of the group signature and the verification time of the group signature are equivalent to that of an individual signature.
Relation:	IICM Communication, 2(3): 31-38
Appears in Collections:	[math] Periodical Articles

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