A group blind signature scheme based on the strong RSA assumption

Abstract

A group blind signature require that a group member signs on group's behalf a document without knowing its content. In this paper we propose an efficient and probably secure group blind signature scheme. Our scheme is an extension of Camenisch and Michel's group signature scheme [2] that adds to the blindness property. The proposed group blind signature scheme is more efficient and secure than Lysyanskaya-Ramzan scheme [12].