Efficient Rekeying Framework for Secure Multicast with Diverse-Subscription-Period Mobile Users

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Provided by: Institute of Electrical & Electronic Engineers
Topic: Security
Format: PDF
Group Key Management (GKM) in mobile communication is important to enable access control for a group of users. A major issue in GKM is how to minimize the communication cost for group rekeying. To design the optimal GKM, researchers have assumed that all group members have the same leaving probabilities and that the tree is balanced and complete to simplify analysis. In the real mobile computing environment, however, these assumptions are impractical and may lead to a large gap between the impractical analysis and the measurement in real-life situations, thus allowing for GKM schemes to incorporate only a specific number of users.
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