A Multi Keyword Searchable Attribute-based Encryption Technique for Data Access Control in Cloud Storage

Abstract

MultiAuthority Cipher-text-policy Attribute-Based Encryption (MA-C-ABE) scheme is a modern form of basic cryptographic and data encryption, which is useful for data cloud storage for fine-grained access control. Multi-Keyword searchable encryption process allows legitimate users to quickly identify useful data stored in a cloud server without disclosing the searched keywords relevant data. Nonetheless, most of the preceding multi-authority attributebased models are just considered to be true in poor design or lack of user revocation performance. In this study, it includes a multi-keyword searchable attribute-based encryption technique with a cloud-based attribute update, which is a hybrid of the attribute-based encryption algorithm and multi-keyword searchable encryption technique. It provide a Multi -Keyword Searchable Cipher-text -Attribute-based Encryption (MK-C-ABE) with user revocation to solve the existing issues in cloud services, where access mechanisms are partially hidden so that recipients may never extract confidential data from the ciphertext. However, based on the idea of Bi-Linear (BL) and Bi-Linear Diffie -Hellman (BDH), our framework is proven to be safe toward specifically selected keyword attacks and selectively identified ciphertext attacks, and other ensuring privacy protection.