A new (t, n) threshold signature scheme withstanding the conspiracy attack
Qi You Xie, Xiuyuan Yu · Wuhan University Journal of Natural Sciences · 2005
A conspiracy attack is proposed to show that Wang-Li's scheme is insecure, because any t or more group members can impersonate other t members to sign any message without holding the responsibility. To avoid the conspiracy attack, this paper presents a new ( t, n ) threshold signature scheme with traceable signers.