Cryptology ePrint Archive: Report 2010/064

New Advances on Privacy-Preserving Policy Reconciliation

Ulrike Meyer and Susanne Wetzel and Sotiris Ioannidis

Abstract: Entities define their own set of rules under which they are willing to collaborate, e.g., interact, share and exchange resources or information with others. Typically, these individual policies differ for different parties. Thus, collaboration requires the resolving of differences and reaching a consensus. This process is generally referred to as policy reconciliation. Current solutions for policy reconciliation do not take into account the privacy concerns of reconciliating parties. This paper addresses the problem of preserving privacy during policy reconciliation. We introduce new protocols that meet the privacy requirements of the organizations and allow parties to find a common policy rule which optimizes their individual preferences.

Category / Keywords: cryptographic protocols / privacy, multi-party computation, oblivious polynomial evaluation, policy, preferences

Date: received 6 Feb 2010, last revised 30 Jul 2010

Contact author: meyer at umic rwth-aachen de

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Version: 20100730:105210 (All versions of this report)

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