(t,n) Threshold group signature scheme based on elliptic curve cryptosystem
Jianhua Yang · Dalian Ligong Daxue xuebao · 2007
Aiming at the problems of the threshold group signature in network communication,such as pseudo character,complex traceable method,poor stability and so on,a threshold group signature scheme based on elliptic curve cryptosystem is presented,and its security analysis is proposed.The scheme has following advantages: introducing members′ actual identities,aliases and alias aggregate of achieving the signature,the scheme can briefly realize the un-pseudo and traceable character.By indirectly distributing group secrete key,it is convenient to add and delete members,and only need to update some public parameters.Based on elliptic curve cryptosystem,the scheme′s key length is short and operation cost is low.