Analysis and Countermeasure of Coalition Resistance for a Class of Group Signature Schemes
Lei Xu · Computer Engineering and Applications Journal · 2006
In this paper,we propose a universal attack scheme for a class of group signatures,and we apply the attack scheme to three new group signatures to prove that they are all not coalition resistant.Then we analyse the reason for them not being coalition resistant.Then we propose a new method to make group signature schemes coalition resistant.At last,we apply the method to set up a group signature scheme to show that it really works.