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Untraceability of Two Group Signature Schemes
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Abstract: | A group signature scheme allows a group member of a given group to sign messages on behalf of the group in an anonymous fashion. In case of a dispute, however, a designated group manager can reveal the signer of a valid group signature. In the paper, we show the untraceability of two group signatures in [1, 5] by new and very simple attacks. Although those flaws, such as, forgeability, untraceability and linkability have been shown in [2, 7, 8, 9], we should point out that our attacks are more simple. |
BibTeX
@misc{eprint-2005-12392, title={Untraceability of Two Group Signature Schemes}, booktitle={IACR Eprint archive}, keywords={cryptographic protocols / Group signature, Untraceability.}, url={http://eprint.iacr.org/2005/055}, note={ zjcamss@hotmail.com 12837 received 23 Feb 2005}, author={Zhengjun Cao}, year=2005 }