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A Group Key Management Scheme Based on Grade-tree Model

  

  1. (Department of Information Security, Xi’an Communications Institute, Xi’an 710106, China)
  • Received:2014-04-29 Online:2014-08-15 Published:2014-08-19

Abstract:

Secure and highly-efficient group key management is critical in secure group communication. A group key
management scheme based on grade-tree model was proposed according to the characteristic of military secret
communications and the need of group key management. The grade-tree model was established firstly according to
relationship of administrative subordination.Then keys among levels were generated by one-way hash function in
order to guarantee accessing popedom and a reformative LKH arithmetic was used to manage members in lowest
subgroups. The performance of scheme is analysed, the result indicates:this scheme is better than other congener
schemes in communications cost and key storage cost.

Key words: group communication, key management, grade, logical key hierarchy

CLC Number: