Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (5): 9-12.doi: 10.13190/jbupt.200805.9.327

• Papers • Previous Articles     Next Articles

A Necessary Condition for Secure Network Coding

LI Da-lin, LIN Xue-hong, LIN Jia-ru, WU Wei-ling   

  1. Key Laboratory of Information Processing and Intelligent Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China)
  • Received:2007-08-09 Revised:1900-01-01 Online:2008-10-30 Published:2008-10-30
  • Contact: LI Da-lin

Abstract:

An information-theoretical interpretation of necessary conditions for secure network coding is presented. Including Shannon’s secrecy system as a special example, a lower bound of secret key information rate of secure network coding for a special multicast network is proposed, which holds for nonlinear network coding linear network coding as well.

Key words: network information theory, network coding, information security

CLC Number: