Cryptology ePrint Archive: Report 2004/326

Cryptanalysis of Qiu-Gu-Chen Variant Group Signature Scheme

Zhengjun Cao

Abstract: Qiu et al. proposed a variant group signature scheme in [1]. We find that the group manager can successfully forge signature because he has absolute predominance in Join Phase.

Category / Keywords: cryptographic protocols / group signature scheme, forgeability

Date: received 23 Nov 2004

Contact author: zjcamss at hotmail com

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Version: 20041126:214515 (All versions of this report)

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