CC07-A Key-Policy Attribute-Based Temporary Keyword Search scheme for Secure Cloud Storage

ABSTRACT:

The temporary keyword search on confidential information in a cloud environment is the primary focal point of this research. The cloud suppliers are not fully trusted. In this way, it is important to outsource information in the encrypted form. In the attribute-based keyword search (ABKS) plans, the authorized clients can generate some search tokens and send them to the cloud for running the search operation. These search tokens can be utilized to remove all the ciphertexts which are delivered whenever and contain the relating catchphrase. Since this may prompt some data spillage, it is more secure to propose a plan in which the inquiry tokens can just concentrate the ciphertexts created in a predefined time interval.

To this end, in this project, we present another cryptographic crude called key-policy attribute based temporary keyword search (KP-ABTKS) which give this property. To evaluate the security of our plan, we formally demonstrate that our proposed conspire accomplishes the catchphrase mystery property and is secure against selectively chosen keyword attack (SCKA) both in the random oracle model and under the hardness of Decisional Bilinear Diffie-Hellman (DBDH) assumption. Besides, we demonstrate that the complexity of the encryption algorithm is linear as for the number of the included characteristics. performance evaluation shows our plan’s practicality.

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