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The goal of the paper is to evaluate trade-off between storage and revocation cost. Storage is computed in terms of keys that each user (respectively, group controller) maintains. And revocation cost is computed in terms of the encryptions performed and the number of messages transmitted, by the group controller. The main objective of this system is to secure the group communication as the data are sensitive or it requires the users to pay for it. To make the group communication secure and make cost effective is the main concentration of this paper. The proposed system presents a secure group communication with effective key generation and transmission.
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