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Secure Two-Party Computation: A Visual Way

  • Paolo D’Arco
  • Roberto De PriscoEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8317)

Abstract

In this paper we propose a novel method for performing secure two-party computation. By merging together in a suitable way two beautiful ideas of the 80’s and the 90’s, Yao’s garbled circuit construction and Naor and Shamir’s visual cryptography, respectively, we enable Alice and Bob to securely evaluate a function \(f(\cdot ,\cdot )\) of their inputs, \(x\) and \(y\), through a pure physical process. Indeed, once Alice has prepared a set of properly constructed transparencies, Bob computes the function value \(f(x,y)\) by applying a sequence of simple steps which require the use of a pair of scissors, superposing transparencies, and the human visual system. A crypto-device for the function evaluation process is not needed any more.

Keywords

Yao’s construction Visual cryptography Secure computation 

Notes

Acknowledgment

We would like to thank Alfredo De Santis for discussions and for pointing out to our attention [29], Carlo Blundo for comments on a preliminary version of this paper, and an anonymous referee for hints and suggestions.

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.Dipartimento di InformaticaUniversity of SalernoFiscianoItaly

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