基于参与者权重的动态多秘密广义门限方案

针对现有参与者有权重的动态多重秘密广义门限方案的不足，基于中国剩余定理，提出一个参与者权重不同的 门限秘密共享方案。在该方案中，参与者的子秘密由参与者选取并保存，每个参与者的子秘密可以多次使用。分发者和参与者间不需要安全信道，系统可以灵活地增加或删除成员，且一次可以恢复多个秘密。分析结果表明该方案具有安全性和实用性。

Dynamic Multi-secret Generalized Threshold Scheme Based on Participant Weight

Aiming at the defect of existing dynamic generalized threshold secret sharing scheme among weighted participants,this paper proposes a（m＋ n1 ＋ n2 ＋ ＋ nl,t ＋ t1 ＋ t2 ＋ ＋ tl） threshold secret sharing scheme among participants with different weight based on Chinese remainder theorem.Participant’s sub-secret is selected and kept by the participant himself and the sub-secret of every participant can be used many times.A secure channel between the dealer and participants is unnecessary.A participant can be freely accepted or fired and many secrets can be recovered in one time.Analysis results show that the scheme is secure and practical.