Improving cloud security by enhanced HASBE using hybrid encryption scheme

Cloud computing has appeared as one of the most influential paradigms in the IT commerce in recent years and this technology needs users to entrust their precious facts and figures to cloud providers, there have been expanding security and privacy concerns on outsourced data. Several schemes employing attribute-based encryption (ABE) have been suggested for get access to control of outsourced data in cloud computing; however, most of them suffer from inflexibility in applying convoluted get access to command principles. In order to recognize scalable, flexible, and fine-grained get access to control of outsourced facts and figures in cloud computing, in this paper, we suggest hierarchical attribute-set-based encryption (HASBE) by expanding ciphertext-policy attribute-set-based encryption (ASBE) with a hierarchical structure of users. The suggested design not only achieves scalability due to its hierarchical structure, but furthermore inherits flexibility and fine-grained get access to command in carrying compound attributes of ASBE. In addition, HASBE uses multiple worth assignments for access expiration time to deal with client revocation more effectively than living schemes. We apply our scheme and show that it is both effective and flexible in dealing with get access to command for outsourced facts in cloud computing with comprehensive trials.