National Changhua University of Education Institutional Repository : Item 987654321/12129

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NCUEIR > College of Science > math > Periodical Articles > Item 987654321/12129

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/12129

Title:	On the Security of Generalization of Threshold Signature and Authenticated Encryption
Authors:	Tseng, Yuh-Min;JAN, J. K.;CHIEN, H. Y .
Contributors:	數學系
Date:	2001
Issue Date:	2012-07-03T03:42:55Z
Publisher:	IEICE
Abstract:	In 2000, Wang et al. proposed a new (t, n) threshold signature scheme with (k, l) threshold shared verification. Meanwhile, integrating the idea of message recovery, they also proposed a (t, n) threshold authenticated encryption scheme with (k, l) threshold shared verification. However, this article will show that both proposed schemes are insecure, because any malicious attacker can obtain the group secret keys from two valid threshold signatures. Thus, the attacker may solely forge or verify a threshold signature. An improvement to overcome the attacks is proposed.
Relation:	IEICE Transactions on Fundamentals of Electronics, Communications of Computer Sciences, E84-A(10): 2606-2609
Appears in Collections:	[math] Periodical Articles

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