The secret key capacity for multiple terminals

Imre Csiszár, Prakash Narayan

Research output: Conference article

1 Citation (Scopus)


We consider the problem of characterizing the secret key (SK)-capacity [Maurer 1993, Ahlswede-Csiszar 1993, Csiszar-Narayan 2000] for an arbitrary number of terminals, each of which observes a distinct component of a discrete memoryless multiple source, with unconstrained public communication allowed between these terminals. Our main contribution is the determination of SK-capacity for an arbitrary subset of terminals with the remaining terminals serving as "helpers," when an eavesdropper observes the communication between the terminals but does not have access to any other information. We also determine the private key (PK)-capacity when the eavesdropper additionally wiretaps some of the helper terminals from which too the key must then be concealed.

Original languageEnglish
Number of pages1
JournalIEEE International Symposium on Information Theory - Proceedings
Publication statusPublished - szept. 12 2002
Event2002 IEEE International Symposium on Information Theory - Lausanne, Switzerland
Duration: jún. 30 2002júl. 5 2002

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Information Systems
  • Modelling and Simulation
  • Applied Mathematics

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