Title :
Cryptanalysis on Generalization of Threshold Signature and Authenticated Encryption for Group Communications
Author :
Zhang, Honglie ; Zhang, Guoyin ; Li, Jiguo
Author_Institution :
Coll. of Comput. Sci. & Technol., Harbin Eng. Univ.
fDate :
Aug. 30 2006-Sept. 1 2006
Abstract :
Wang et al proposed generalization of threshold signature and authenticated encryption for group communications (denoted as W-C-L scheme). It is shown here that their schemes are insecure. One is W-C-L scheme can´t withstand equation attack that they claimed. The other is W-C-L scheme is not the real threshold shared verification. Recently, an improved scheme (denoted as T-J-C scheme) on W-C-L scheme is proposed by Tseng et al
Keywords :
cryptography; digital signatures; T-J-C scheme; W-C-L scheme; authenticated encryption; cryptanalysis; equation attack; group communication; threshold shared verification; threshold signature; Bandwidth; Computer science; Costs; Cryptography; Data communication; Data security; Digital signatures; Educational institutions; Equations; Roentgenium;
Conference_Titel :
Innovative Computing, Information and Control, 2006. ICICIC '06. First International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7695-2616-0
DOI :
10.1109/ICICIC.2006.430
