基于单向函数的广义动态秘密分享方案

给出了一个基于单向函数的安全高效的广义防欺诈的动态秘密分享方案，可使用于任意接入结构，与已有的问类方案相比，它具有如下优点：(1)每个成员的子秘密可无限制地多次使用；(2)能够确认欺骗者；(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)系统可以很方便地增删成员；(5)具有较少的信息存储量及通信量。因其安全性，效率方面的优点，将会在密钥托管，电子商务中得到广泛的应用。

A General Dynamic Secret Sharing Scheme Based on One-Way Function

A general dynamic secret sharing scheme based on one - way function is proposed in this paper and the scheme can identify cheaters. It is applicable to arbitrary acess structures. Compared with the schemes of the same sorts, it has the following good properties: (1) The shadows can be reused for many times; ( 2 ) It can identify cheaters; (3 ) When some participants' shadows are revealed; they can be renewed without any effect on the oters;(4) The system can accept or fire a participant easily;(5) The information stored by the participants is greatly decreased. Dueto its propertlesofsecurltyand efficiency; the scheme will havewlde applications In dstrlbuted key escrow and ekctronlc commerce.