Study of Proxy Re-cryptography in Group Key Management for Group Communications System

  • Qichen Wang
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 225)


This paper presents a group key management mechanism PTGKM based on hierarchical and domain structure in Near-Space Network. The mechanism combines hierarchical and domain structure with the use of proxy re-cryptography algorithms. It has the following characteristics: (1) the core backbone network node cannot obtain the new group key. It only participates in the distribution of the new group key. So the mechanism solves the problem of a single point of failure of group key management based on hierarchical and domain structure; (2) The mechanism restricts the impact of group membership change in its domain, which improves the scalability of group key management scheme; (3) The inter-domain switching algorithm effectively reduces the rekeying overhead of the high mobile nodes’ frequent switching between different domains; (4) The mechanism adapts to the characteristics of Near-Space Network and meets the forward security and backward security. The analysis results show that, PTGKM mechanism is applicable to near space environment and has good scalability and reliability.


Group key management Proxy re cryptography Security 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Institute for Interdisciplinary Information ScienceTsinghai UniversityBeijingChina

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