Abstract
The group signature scheme [1], ACJT for short, is popular. In this paper we show that it is not secure. It does not satisfy exculpability. The group manager can sign on behalf of any group member. The drawback found in the scheme shows that some inductions are not sound, though they are prevalent in some so-called security proofs.
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Cao, Z. (2006). Analysis of One Popular Group Signature Scheme. In: Lai, X., Chen, K. (eds) Advances in Cryptology – ASIACRYPT 2006. ASIACRYPT 2006. Lecture Notes in Computer Science, vol 4284. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11935230_30
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DOI: https://doi.org/10.1007/11935230_30
Publisher Name: Springer, Berlin, Heidelberg
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