Cryptology ePrint Archive: Report 2004/039

A Bilinear Spontaneous Anonymous Threshold Signature for Ad Hoc Groups

Victor K. Wei

Abstract: We present an adaptive chosen-plaintext cryptanalysis of Boneh, et al.'s bilinear spontaneous anonymous ad hoc group signature. Then we present a patch, and an extension to a threshold version complete with a security proof in the random oracle model (ROM).

Category / Keywords: cryptographic protocols / cryptanalysis, anonymity, group signature

Publication Info: preprint

Date: received 13 Feb 2004

Contact author: kwwei at ie cuhk edu hk

Available formats: PDF | BibTeX Citation

Version: 20040216:095608 (All versions of this report)

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