@inproceedings{cadb010c4731417383af05ed7a9149f2,
title = "On the security of the Lee-Chang group signature scheme and its derivatives",
abstract = "W.-B. Lee and C.-C. Chang (1998) proposed a very efficient group signature scheme based on the discrete logarithm problem. This scheme was subsequently improved by Y.-M. Tseng and J.-K. Jan (1999) so that the resulting group signatures are unlinkable. In this paper, we show that any obvious attempt to make unlinkable the Lee-Chang signatures would likely fail. More importantly, we show that both the original Lee-Chang signature scheme and its improved version are universally forgeable.",
author = "Marc Joye and Lee, {Narn Yih} and Tzonelih Hwang",
year = "1999",
month = jan,
day = "1",
language = "English",
isbn = "3540666958",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
pages = "47--51",
editor = "Masahiro Mambo and Yuliang Zheng",
booktitle = "Information Security - 2nd International Workshop, ISW 1999, Proceedings",
address = "Germany",
note = "2nd International Information Security Workshop, ISW 1999 ; Conference date: 06-11-1999 Through 07-11-1999",
}