Abstract
Message-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} 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.
Highlights
Related work Since the concept of group signature was proposed in Chaum and van Heyst (1991), it has become an important primitive to realize anonymous authentication
The admitter could generate tokens with respect to messages by using its secret key such that the trace manager can only open signatures of messages specified by the admitter
In “Syntax and security of fully dynamic group signature with message dependent opening” section, we present the syntax of the fully dynamic group signature scheme with message dependent opening
Summary
Related work Since the concept of group signature was proposed in Chaum and van Heyst (1991), it has become an important primitive to realize anonymous authentication.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
