A general security condition for multi-source linear network coding

  • Authors:

  • Zhixue Zhang;Raymond W. Yeung

  • Affiliations:

  • School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China;Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong, China

  • Venue:
  • ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
  • Year:
  • 2009

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Abstract

In this paper, we study the linear multisource network coding security problem in [4], without the assumption that all source messages have positive distributions. We obtain a necessary and sufficient security condition, which can be regarded as a generalization of the one in [4].