具有传递性质的接入结构上的秘密分享方案的构造

Construction of Secret Sharing Schemes on Access Structures with Transfer Property

引入了具有传递性质的接入结构的概念 ,并给出一种构造具有这类接入结构的秘密分享方案的通用方法 ,该方法简捷易行 .对要分享的一个秘密 ,不管一个参与者属于多少个最小合格子集 ,他只需保存一个秘密份额 .而且用于分享多个秘密时 ,不需要增加分享者额外的信息保存量 .因而优于已有的其他许多方法 .文中还给出了实例以说明如何具体地构造具有这类接入结构的秘密分享方案 .

We propose the concept of access structure with transfer property, and suggest a general method of constructing secret sharing schemes with this kind of access structures. Our method is simple and practical. Even if a participant is contained in many minimal authorized subsets, who need not keep more than one secret shares for sharing one secret. There is no need for a participant to keep extra secret data when multiple secrets are to be shared. So our method has advantages over many others. An example is given to show concretely how to construct secret sharing schemes with such access structures.