Access Control based Scheme for effective cloud data access with secured policy with Equality Test

Abstract

With the rapid use of large data, how to control access to large amounts of large data becomes a very difficult problem, especially when large data is stored in the cloud. We propose an effective and well-obtained system based on the control of access to big data with the policy of protection of privacy thanks to the Equality Test. where all the attributes are hidden in the access policy, not just the values of the attributes. We also designed a new Bloom attribute filter to evaluate if the attribute is in the access policy. The Encryption Text Policy attribute based on equality-based encryption (CP-ABE with equality test) is a promising encryption technique that allows Data-Providers to encrypt data within specified access rules for certain attributes of recipients of data and only allows attributes to comply with access rules to decrypt data. In CP-ABE with the equality test, the access policy is attached to the encrypted text in the form of a simple text, which can also filter some private information about Data-Providers. Existing methods only partially hide attribute values in access rules, while attribute names are not yet protected. In particular, in the proposed system, we hide the entire attribute (instead of only its values) in the access rules and we will not filter any privacy information in the access control policy with quality control, and we will protect against text attacks without the selected format using the equality test.