Identity-based mix: Anonymous communications without public key certificates

  • Authors:
  • Sheng Zhong

  • Affiliations:
  • Computer Science and Engineering Department, State University of New York at Buffalo, Amherst, NY 14260, USA

  • Venue:
  • Computers and Electrical Engineering
  • Year:
  • 2009

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Abstract

A mix is a cryptographic construction for anonymizing communications. Existing mixes require that the public key certificates of mix servers have been distributed among users. In this paper, we propose a new mix that uses techniques from identity-based cryptography. Our mix does not require any public certificates; as long as the users know the identities of mix servers, the mix can anonymize messages. We give proofs of correctness and privacy, as well as analysis of efficiency.