Practical dynamic group signature with efficient concurrent joins and batch verifications

2021 ◽  
Vol 63 ◽  
pp. 103003
Author(s):  
Hyoseung Kim ◽  
Youngkyung Lee ◽  
Michel Abdalla ◽  
Jong Hwan Park
Keyword(s):  
Group Signature ◽  
Dynamic Group

Lattice-based dynamic group signature for anonymous authentication in IoT

2019 ◽  
Vol 74 (7-8) ◽  
pp. 531-542 ◽  
Author(s):  
Run Xie ◽  
Chanlian He ◽  
Chunxiang Xu ◽  
Chongzhi Gao
Keyword(s):  
Group Signature ◽  
Anonymous Authentication ◽  
Dynamic Group

scholarly journals An efficient fully dynamic group signature with message dependent opening from lattice

Cybersecurity ◽  
2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Yiru Sun ◽  
Yanyan Liu
Keyword(s):  
Group Size ◽  
Communication Complexity ◽  
Group Signature ◽  
Signature Scheme ◽  
Zero Knowledge ◽  
Dynamic Group ◽  
Logarithmic Relationship ◽  
Better Than

AbstractMessage-dependent opening is one of the solutions to solve the problem of the tracing manager owns excessive power. In this paper, we present a new lattice-based fully dynamic group signature scheme with message-dependent opening by combining an improved version of the fully dynamic group signature scheme proposed by Ling et al and the double encryption paradigm. In addition, we propose an improved underlying zero knowledge protocol, it has a soundness error $\frac {1}{\max (n,p)+1}$ 1 max ( n , p ) + 1 that is better than the Stern-like protocol, which helps to bring down the communication complexity of the protocol and hence the signature scheme. Our scheme constrains the power of group managers by adding an admitter, and the signature size has a logarithmic relationship with the group size.

scholarly journals An efficient full dynamic group signature scheme over ring

Cybersecurity ◽  
2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Yiru Sun ◽  
Yanyan Liu ◽  
Bo Wu
Keyword(s):  
Group Signature ◽  
Signature Scheme ◽  
Dynamic Group
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