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arXiv 1002.3671cs.CRcs.DB
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用于特征向量计算的隐私保护协议

Privacy-Preserving Protocols for Eigenvector Computation

Manas A. Pathak, Bhiksha Raj

摘要:

在本文中,我们提出了一个协议,用于计算属于多个半诚实的隐私约束的数据矩阵的集合的主特征向量。我们提出的协议是基于安全的多方计算与半诚实的仲裁者谁处理的数据加密的其他各方使用添加剂同态密码系统。我们用随机化和模糊化来增强协议,使任何一方都难以从中间步骤中估计属于其他方的数据的属性。以往的算法都是基于相关矩阵的QR分解,本文提出了一种基于幂迭代的快速算法。我们分析了协议的正确性,安全性和效率。

英文摘要:

In this paper, we present a protocol for computing the principal eigenvector of a collection of data matrices belonging to multiple semi-honest parties with privacy constraints. Our proposed protocol is based on secure multi-party computation with a semi-honest arbitrator who deals with data encrypted by the other parties using an additive homomorphic cryptosystem. We augment the protocol with randomization and obfuscation to make it difficult for any party to estimate properties of the data belonging to other parties from the intermediate steps. The previous approaches towards this problem were based on expensive QR decomposition of correlation matrices, we present an efficient algorithm using the power iteration method. We analyze the protocol for correctness, security, and efficiency.

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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