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Abstract：
For all existing non-fully dynamic (i.e., only supporting membership revocation and no member’s enrollment is involved) lattice-based group signature schemes with verifier-local revocation (VLR- GS ), only selfless-anonymity (SA) is achieved, which is strictly weaker than the de facto standard anonymity notion, full-anonymity (FA ), where the adversary is allowed to corrupt all members. At ICICS 2018, Perera and Koshiba delivered a new VLR- GS scheme and claimed that it is the first lattice-based construction achieving full security (i.e., FA and full-traceability). In this paper, we demonstrate that their construction does not achieve the claimed FA security by presenting an attack, and only SA security is achieved, the same as the first lattice-based VLR-GS scheme introduced by Langlois et al. at PKC 2014. © 2021, Springer Nature Switzerland AG.
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ISSN： 0302-9743
Year： 2021
Volume： 12809 LNCS
Page： 332-345
Language： English
0 . 4 0 2
JCR@2005
Cited Count：
SCOPUS Cited Count： 1
ESI Highly Cited Papers on the List： 0 Unfold All
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30 Days PV： 1
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