SECURE DATA SHARING USING USER SIDE ENCRYPTION IN CLOUD COMPUTING

Computer science engineering

Cloud computing is main purpose of data storing and retrieving data in data owners or users so data owners upload some sensitive data in cloud so only valid user retrieve the data so we design attribute-based data searching in cloud computing, become a research hot-spot due to its distinguished long-list advantages. Ciphertext-policy attribute-based encryption (CP-ABE), has turned to be a crucial encryption technology to tackle the challenge of secure data sharing. In the CP-ABE, user’s secret key is by an attribute set, and ciphertext is associated with an access structure. In a CP-ABE, user’s secret keys described by an attribute set, and ciphertext is said to an access structure. Data owner is allowed to access structure over the universe of attributes. A user can decrypt a given ciphertext as long as his/her attribute set matches the access structure over the ciphertext. Employing a CP-ABE system directly into a cloud application which can yield some open problems. All users’ secret keys need to be issued by a completely trusted key authority (KA).

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