Title :
Security analysis of the improved group signature
Author :
Jianhong, Zhang ; Xiaofeng, Chen ; Yumin, Wang
Author_Institution :
Nat. Key Lab. of Integrated Service NetWorks, Xidian Univ., Xi´´an, China
Abstract :
We show that the improved group signature (Yuh-Min Tseng and Jinn-ke Jan, Electron. Lett., vol.35, no.16, p.1324, 1999) has an essential flaw: universal forgery. An adversary can forge a group membership certificate to sign any message without being traced by the group manager.
Keywords :
message authentication; public key cryptography; group manager; group membership certificate; improved group signature; private key; public key; security analysis; universal forgery; Equations; Forgery; Identity management systems; Intserv networks; National security; Public key; Sun;
Conference_Titel :
Information Theory Workshop, 2003. Proceedings. 2003 IEEE
Print_ISBN :
0-7803-7799-0
DOI :
10.1109/ITW.2003.1216722
