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Transaction-Based Pseudonyms in Audit Data for Privacy Respecting Intrusion Detection

  • Joachim Biskup
  • Ulrich Flegel
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1907)

Abstract

Privacy and surveillance by intrusion detection are potentially conflicting organizational and legal requirements.In order to support a balanced solution, audit data is inspected for personal data and identifiers referring to real persons are substituted by transaction-based pseudonyms. These pseudonyms are constructed as shares for a suitably adapted version of Shamir’s cryptographic approach to secret sharing. Under sufficient suspicion, expressed as a threshold on shares, audit analyzers can perform reidentification.

Keywords

privacy anonymity pseudonymity audit analysis intrusion detection secret sharing purpose binding 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Joachim Biskup
    • 1
  • Ulrich Flegel
    • 1
  1. 1.University of DortmundDortmundGermany

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