Conversion of real-numbered privacy-preserving problems into the integer domain

  • Authors:
  • Wilko Henecka;Nigel Bean;Matthew Roughan

  • Affiliations:
  • School of Mathematical Sciences, University of Adelaide, Australia;School of Mathematical Sciences, University of Adelaide, Australia;School of Mathematical Sciences, University of Adelaide, Australia

  • Venue:
  • ICICS'12 Proceedings of the 14th international conference on Information and Communications Security
  • Year:
  • 2012

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Abstract

Secure Multiparty Computation (SMC) enables untrusting parties to jointly compute a function on their respective inputs without revealing any information but the outcome. Almost all techniques for SMC support only integer inputs and operations. We present a secure scaling protocol for two parties to map real number inputs into integers without revealing any information about their respective inputs. The main component is a novel algorithm for privacy-preserving random number generation. We also show how to implement the protocol using Yao's garbled circuit technique.