摘要
分析了当前几种秘密共享方案的不足,且给出了一个基于单向Hash函数的动态秘密共享方案的改进算法,它的特性如下:更新系统密钥时,无须更改每个子密钥;当某个子密钥泄密时,不对其它子密钥的安全构成威胁;系统为新共享者分配子密钥时,其它子密钥不受任何影响;子密钥可无限制地多次使用;具有很强的防欺诈和欺诈识别功能。该算法已在计算机上进行模拟,该文将给出一些实验数据,并对算法性能进行分析。
The weak points of several secret sharing schemes is analyzed and a better algorithm of dynamic secret sharing scheme based on hash function is proposed. It has the following properties： The system can renew system secrets without renewing the shadows of the participants; When some participants＇ shadows are revealed, they don＇t threaten the others; A new shadow is generated for a new participant without any effect on the others; The shadows are reused for many times; Efficiently guard against cheating among participants. It is simulated on the computer and generated some experiment datum. Finally. the scheme＇s performance is analyzed through the datum.
出处
《计算机工程与设计》
CSCD
北大核心
2006年第24期4718-4719,4723,共3页
Computer Engineering and Design
