An Effective Contributory Re-Keying Approach to Compute Conference Key | Science Publications

Journal of Computer Science

D. Thilagavathy¹  M. Rajaram¹ 

关键词: Authentication;    dynamic peer groups;    group key agreement;    secure group communication;    re-keying approach;    exchange protocol;    ad-hoc network;    re-keying efficiency;    queue-batch algorithm;   

DOI  :  10.3844/jcssp.2011.1212.1217

学科分类：计算机科学（综合）

来源: Science Publications

【 摘 要 】

Problem statement: With the explosive growth of and internet and web applications manyemerging group-oriented distributed applications such as tele/video-conferencing, multiplayer gamesare based on group communication model that need security services such as privacy and data integrityHence a secure distributed group key agreement is required to establish and authenticate a commongroup key for secure and private communication. There is a need for security services to providegroup-oriented communication privacy and data integrity. It is important that members of the groupcan establish a common secret key for encrypting group communication. A key tree approach has beenproposed by many authors to distribute group key in such a way that the re keying cost scales with thelogarithm of the group size for a join or leave request. The efficiency of this key tree approachcritically depends on whether the key tree remains balanced over time as members join or leavesApproach: Instead of performing individual re-keying operations, an interval-based approach of re keyingis adopted in the proposed scheme. Results: In the proposed scheme Queue-merge algorithm isused for re keying which substantially reduces the computation cost and communication cost. Thecomparison shows that queue merge algorithm performs better than Batch algorithm in terms ofminimizing the key tree and presumes better node density thereby reducing the computation cost.Conclusion: Performance comparison also shows reduced number of renewed nodes for various re keying interval which reduces the communication cost.

【 授权许可】

Unknown