A Practical Implementation of Hierarchically Structured Key Predistribution System and Its Evaluation
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In Key Predistribution Scheme(KPS) and One-Time useBroadcast Encryption Schemes(OTBES) a Trusted Authority(TA) generates secret information and distributes part of it to users. It also has to observe users’ dishonest acts to prevent collusion attacks. However, these tasks can be heavy for a TA if there are a large number of users in the system. In this paper, we propose Hierarchically Structured KPS(HS-KPS) as an effective solution for this problem. Then we evaluate its performance in terms of efficiency, security and memory size.
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