A Review on Circuit hybrid attribute based encryption of data with fragmentation for increasing ideal performance and security in cloud computing

Cloud computing is innovation that uses advanced computational power and improved storage capacities. Cloud computing offer the number of significant advantages. One of the main advantage of cloud computing is pay-as-per-use, which means according to the use of service the customer has to pay. Where the prime disadvantage of cloud computing is achieving security to the data which is store in cloud. The data compromise may occur due to attacks by other users and node within cloud. In this paper, We propose Hd-ABE (Hybrid Attribute Based Encryption ) In which data owner should set the access structure of attributes with encrypted data , The user only whose attributes are match with access structure of owner only that user can decrypt the data. To secure data which is store in single node with in cloud we use DROPS (Division and Replication of Data in the cloud for Optimal Performance and Security) methodology, in which we divide the file into fragments, and replicate the fragmented data over the cloud.