Secure and Efficient Attribute-Based Access Control for Multiauthority Cloud Storage
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Description
Here we have to build the security and privacy for the entire system. Here we concentrate 4 important roles. The first role is Data Owner. Here the data owner will be the fully authenticated for the file upload. The Second role is Attribute Authority. Here the Attribute Authority will receive both Data owner and Data Consumer request. The Third role is Data Consumer. Data Consumer will enters the request for attribute key will send to attribute authority. Using the attribute key the consumer have privilege to send a request for file key. The final role is Cloud server. It is used for storage purpose. Which maintains a File Upload and Download history which is encrypted data from data owners and data consumer. Specifically, we construct a multiauthority CP-ABE scheme that features: 1) the system does not need a fully trusted central authority, and all attribute author-ities independently issue secret keys for users; 2) each attribute authority can dynamically remove any user from its domain such that those revoked users cannot access subsequently outsourced data; 3) cloud servers can update the encrypted data from the cur-rent time period to the next one such that the revoked users cannot access those previously available data; and 4) the update of secret keys and cipher text is performed in a public way. We show the merits of our scheme by comparing it with the related works, and further implement it to demonstrate its practicality. In addition, the proposed scheme is proven secure in the random oracle model.
Tags: 2018, Cloud Computing Project, Domain