World Journal of Engineering Research and Technology

Manasi S. Jarande* and Uma R. Godase

ABSTRACT

Cloud Computing is the emerging technology where we can get platform as a service, software as a service and infrastructure as a service. When it comes to storage as a service, data privacy and data utilization are the primary issues to be deal with. Security and privacy are very important issues in cloud computing. Distributed access control of data stored in cloud so that only authorized users with valid attributes can access them. Users are authenticated who store and modify their data on the cloud. The identity of the user is protected from the cloud during authentication. The architecture is decentralized, meaning that there can be several KDCs for key management. Revoked users cannot access data after they have been revoked. The proposed scheme is resilient to replay attacks. The protocol supports multiple read and writes on the data stored in the cloud. It is proposing privacy preserving authenticated access control scheme. According to the scheme a user can create a file and store it securely in the cloud. The cloud verifies the authenticity of the user without knowing the user?s identity before storing data. The scheme also has the added feature of access control in which only valid users are able to decrypt the stored information. The scheme prevents replay attacks and supports creation, modification, and reading data stored in the cloud. The work proposes a new decentralized access control scheme for secure data storage in clouds, which supports anonymous authentication. Moreover, our authentication and access control scheme is decentralized and robust, unlike other access control schemes designed for clouds which are centralized.

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