An Attack and Improve of a Group Signature Scheme Based on Chinese Remainder Theorem
Wang Feng-he①②; Hu Yu-pu①; Wang Chun-xiao③
①Key Lab of Computer Networks and Information Security, Ministry of Education, Xidian University, Xi’an 710071, China; ②Dept. of Mathematics, Taishan Collage., Taian 271000, China
Abstract：An attack is mounted on a group signature scheme based on Chinese Remainder Theory(Chen-Scheme). It shows the Chen-Scheme is insecure: A colluding subset of group members can find the private key of other members and forge their signatures; The dishonest group center can produce a valid signature on behalf of group members. Using Schnorr signature scheme this paper proposes an improve scheme, which has good characteristics: A colluding subset of group members can not produce a valid signature that the group manager can not open; A dishonest group center can not sign messages on behalf of other members; The revocation of the membership is efficient .
王凤和; 胡予濮; 王春晓. 一个基于中国剩余定理的群签名方案的攻击及其改进方案[J]. 电子与信息学报, 2007, 29(1): 182-184 .
Wang Feng-he; Hu Yu-pu; Wang Chun-xiao. An Attack and Improve of a Group Signature Scheme Based on Chinese Remainder Theorem. , 2007, 29(1): 182-184 .
2007, Vol. 29 
