Journal on Communications ›› 2012, Vol. 33 ›› Issue (12): 93-99.doi: 10.3969/j.issn.1000-436x.2012.12.012

• Papers • Previous Articles     Next Articles

On-demand key management based on social attribute for opportunistic networks

Xi CHEN1,2,Guang-song LI3,You-liang TIAN1,Jian-feng MA1   

  1. 1 Key Laboratory of Computer Networks and Informatio urity(Ministry of Education),Xidian University,Xi’an 710071,China
    2 The Twentieth Research Institute of China Electronics Technology Group Corporation,Xi’an 710068,China
    3 Department of Information Research,PLA Information Engineering University,Zhengzhou 450002,China
  • Online:2012-12-25 Published:2017-07-15
  • Supported by:
    The Program for Changjiang Scholars and Innovative Research Team in University;The Key Program of NSFC-Guangdong Union Foundation;The Major National S&T Program;The Fundamental Research Funds for the Central Universities

Abstract:

An on-demand key management scheme was proposed based on social attributes,which could conform to the characteristics of intermittent connectivity,high mobility and self-organized management in opportunistic networks.By utilizing the identity-based threshold signature scheme,the authentication of nodes’social attributes was realized.Due to the specialty of the opportunistic routing protocols,nodes selectiv ly issued the identity certificates for each other to establish the Web of trust based on the matching of social attributes.Consequently,the performance of certificate graph was efficiently optimized comparing to the traditional met .Meanwhile,thanks to checking the social attribute evidences,the invalid certificate chains caused by malicious nodes were avoid to be built.Simulation result shows that,the scheme can provide high success ratio for reconstruction of certificate chains and high user reachability through low network costs in opportunistic networks.

Key words: opportunistic networks, key management, identity-based cryptography, threshold cryptography, social attribute, certificate graph

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