Abstract: Aiming at the defect of existing dynamic generalized threshold secret sharing scheme among weighted participants, this paper proposes a 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.

Key words: weighted, Chinese remainder theorem, generalized threshold scheme

摘要： 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。

关键词: 加权, 中国剩余定理, 广义门限方案

CLC Number: 

• TP309