Title
More Efficient VLR Group Signature Satisfying Exculpability
Abstract
In this letter, we improve NF'07 (Nakanishi and Funabiki) VLR group signature scheme such that it satisfies exculpability and has lower computation costs. In the proposed scheme, a group member generates his own private key together with the group manager in order to realize exculpability while the signature size is not made longer. Also, a new revocation check method is proposed at the step of verifying, and the computation costs of verifying are independent of the number of the revoked members, while they are linear with the number of the revoked members in the original scheme. Thus, the proposed scheme is more efficient than the original scheme and can be applicable to mobile environments such as IEEE 802.1x.
Year
DOI
Venue
2008
10.1093/ietfec/e91-a.7.1831
IEICE Transactions
Keywords
Field
DocType
vlr group signature scheme,mobile environment,signature size,group manager,original scheme,proposed scheme,computation cost,group member,lower computation cost,satisfying exculpability,efficient vlr group signature,new revocation check method,group signature,satisfiability,group signature scheme,bilinear map,communication technology
Bilinear map,Ring signature,Revocation,Theoretical computer science,Group signature,Public-key cryptography,Mathematics,Computation
Journal
Volume
Issue
ISSN
E91-A
7
1745-1337
Citations 
PageRank 
References 
2
0.40
6
Authors
4
Name
Order
Citations
PageRank
J. Zhang15210.98
Lizhen Ma221.42
Rong Sun320.40
Yumin Wang422227.91