摘要： 基于求解线性方程组的理论,构造了一种基于未知元迭代的资源安全性等级存取控制方案。该方案减小了由动态用户而引起的密钥动态变化量。从理论上进行了证明,估计了所需的时间复杂度和存储空间,验证了其安全性,评价了其效率。结果表明,该方案是有效且实用的。

关键词: 存取控制, 门限秘密共享, 未知元迭代

Abstract: Based on the theory of requesting answers of linear equation group, properly handling the unknown variables iterative, the paperconstructs a resource’s security level control scheme based on threshold secret sharing. In the scheme, the number of secret key’s changing caused bydynamic users is reduced. Time-complexity and space-complexity of the scheme is evaluated. The authors verify the security and prove it’sefficiency. The result shows that the scheme is efficient and practicable.

中图分类号: 

• TP393.08