Security analysis on a kind of group signatures

In 1998, Lee and Chang proposed a group signature scheme based on the discrete logarithm problem.Tseng, Jan and Ao gave respectively new improved scheme based on Lee-Chang scheme. In this paper, we show there are still some security leaks in these schemes, and give some methods of forgery attack.

Bibliographic Details

Published in:	Tongxin xuebao
Main Authors:	SI Tao-zhi1, WANG Ze-cheng1, LI Zhi-bin1, ZHOU Zhen-jiang1
Format:	Article
Language:	Chinese
Published:	Editorial Department of Journal on Communications 2003-01-01
Subjects:	discrete logarithm group signature forgery attack anonymity
Online Access:	http://www.joconline.com.cn/zh/article/74361165/