Abstract
We propose a new group signature scheme that simultaneously provides the following two properties : (1) the membership authority is able to add a user but not to identify an actual signer, while the tracing authority is able to identify the actual signer but not to add a user, (2) for further decentralization, these two authorities are respectively distributed among multiple entities in a manner efficient enough for practical applications. Previous group signature schemes have only offered one or the other of these two properties. Further, we formalize the security properties.
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Furukawa, J., Yonezawa, S. (2005). Group Signatures with Separate and Distributed Authorities. In: Blundo, C., Cimato, S. (eds) Security in Communication Networks. SCN 2004. Lecture Notes in Computer Science, vol 3352. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30598-9_6
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DOI: https://doi.org/10.1007/978-3-540-30598-9_6
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