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arXiv 1107.1880cs.CR
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PKI体系结构中信任评估的矩阵幂算法

Matrix powers algorithms for trust evaluation in PKI architectures

Jean-Guillaume Dumas, Hicham Hossayni

摘要:

本文研究公钥基础设施中的信任评估问题。已经提出了不同的信任模型来互连各种PKI组件,以便在它们之间传播信任。在本文中,我们提供了一个新的多项式算法,使用线性代数来评估网络中的信任关系,使用不同的信任评估方案。优点有两方面:首先,使用矩阵计算而不是图形算法提供了优化的计算解决方案;其次,我们的算法可以用于一般的图形,即使在存在循环的情况下。我们的算法的目的是评估使用所有现有的(有限)实体之间的信任路径作为一个初步的PKI之间的任何交流的信任。这可以提供精确的信任评估,并加速例如交叉证书验证。

英文摘要:

This paper deals with the evaluation of trust in public-key infrastructures. Different trust models have been proposed to interconnect the various PKI components in order to propagate the trust between them. In this paper we provide a new polynomial algorithm using linear algebra to assess trust relationships in a network using different trust evaluation schemes. The advantages are twofold: first the use of matrix computations instead of graph algorithms provides an optimized computational solution; second, our algorithm can be used for generic graphs, even in the presence of cycles. Our algorithm is designed to evaluate the trust using all existing (finite) trust paths between entities as a preliminary to any exchanges between PKIs. This can give a precise evaluation of trust, and accelerate for instance cross-certificate validation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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