A group signature scheme allows a group member of a given group to sign messages on behalf of the group in an anonymous and unlinkable way. In case of a dispute, however, a design...
Group signatures, introduced by Chaum and van Heijst, allow members of a group to sign messages anonymously on behalf of the group. Only a designated group manager is able to iden...
The group signature scheme [1], ACJT for short, is popular. In this paper we show that it is not secure. It does not satisfy exculpability. The group manager can sign on behalf of ...
To enhance the efficiency of threshold group signature schemes, Yu and Chen, recently, proposed an efficient threshold group signature scheme. By using elliptic curves, the propos...
Suppose that an organization O wants to do the following: to reveal only part of its network map; to filter unwanted traffic passing through its network; and to route, to the righ...