Generalized privacy amplification

  • Authors:
  • C. H. Bennett;G. Brassard;C. Crepeau;U. M. Maurer

  • Affiliations:
  • IBM Thomas J. Watson Res. Center, Yorktown Heights, NY;-;-;-

  • Venue:
  • IEEE Transactions on Information Theory - Part 2
  • Year:
  • 1995

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Abstract

This paper, provides a general treatment of privacy amplification by public discussion, a concept introduced by Bennett, Brassard, and Robert for a special scenario. Privacy amplification is a process that allows two parties to distil a secret key from a common random variable about which an eavesdropper has partial information. The two parties generally know nothing about the eavesdropper's information except that it satisfies a certain constraint. The results have applications to unconditionally secure secret-key agreement protocols and quantum cryptography, and they yield results on wiretap and broadcast channels for a considerably strengthened definition of secrecy capacity