抗攻击的动态多秘密共享方案

摘要

It presents two anti-assault dynamic multi-secret sharing schemes respectively based on the weight of participants are the same and are not by RSA, discrete logarithm cryptosystem, hash function and OR operation.Compared the existing schemes,the dealer only sends pseudo secret shares to participants in the schemes,which makes them be more strongly anti-assau moreover, the scheme 1 is dually anti-assault.In the whole dynamic process,the coefficients of polynomials and master secret shares always stay the same,which reduces the cost of realizing the schemes.%利用RSA、离散对数密码体制、单向hash函数和异或运算设计了一个在参与者权重相同条件下的强抗攻击的动态多秘密共享方案和一个在参与者权重不同的条件下强抗攻击的动态多秘密共享方案.与现有的方案相比,该方案中分发者发送给参与者的只是伪秘密份额,这就使得该方案具有更强抗攻击性,且参与者可以验证伪秘密份额的有效性.方案1还具有双重抗攻击性.而且,在整个动态过程中,多项式系数和原始秘密份额始终不变,从而减小了方案实施的代价.