基于因子分解和离散对数的动态秘密分享方案
A Dynamic Secret Sharing Scheme Based on Factorization and Discrete Logarithms
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摘要: 该文提出了一个安全性基于离散对数与因子分解的动态秘密分享方案.它具有如下优点:(1)系统更新分享的秘密时,无需更新分享的子秘密,即子秘密可重复使用;(2)当系统增删成员时,无需变更其他成员的子秘密;(3)当某个成员的子秘密泄露时,系统只需为该成员重新分配子秘密而不必更改其他成员的子秘密;(4)防止欺诈;(5)通信量较少,工作效率高.
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关键词:
- 离散对数;因子分解;动态秘密分享;欺诈
Abstract: A dynamic secret sharing scheme based on discrete logarithms and factorization is proposed in this paper. It has the following advanced properties: (1) The dealer can renew system secrets without renewing the shadows of the participants; (2) When the system accepts a new participant or fires a participant, the shadows of other participants would not change; (3) When some participants shadows are revealed ,they can be renewed without any effect on the others; (4) It can detect the cheater; (5) Comunication is reduced and work efficiency is improved. -
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