一个多方求特征值协议的分析与改进

Analysis and Improvement of a Multi-Party Protocol for Finding the Eigenvalues of Matrices

对于一个多方安全计算特征值的协议进行了分析,并指出该协议存在安全漏洞。此外,基于相似矩阵具有相同特征值这一结果,给出了一个新的多方计算矩阵特征值协议,新协议的适用范围更广,并给出了安全性分析。

LUO et al. presented a multi-party protocol of finding eigenvalues of matrix in a secure multi-party computation situation and studied the security of it. The authors of this paper points out that the protocol is insecure in most cases of scientific computation and technological applications. A new protocol solving the same problem and the discussion of its security are also given.