Cryptology ePrint Archive: Report 2005/186

Linkability of Several Blind Signature Schemes

Xuesheng Zhong

Abstract: The unlinkability is an important security property that blind signature schemes should satisfy. But we find that the several blind signature schemes [1,2,3] are linkable. The Signer can derive a link between a protocol view and a valid blind signature. They are not secure.

Category / Keywords: cryptographic protocols / blind signature, anonymity, protocol view, linkability.

Date: received 21 Jun 2005, withdrawn 19 Jul 2005

Contact author: zhongxsh at 163 com

Available format(s): (-- withdrawn --)

Version: 20050719:123736 (All versions of this report)

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