Author : Miss.Geeta Bajirao Biradar and Prof. Dr.Archana C Lomte

A countless data owners have moved their information into cloud servers for their benefit for multiprocessing, where secret and sensitive information must be encrypted first and then they are stored into cloud. Keyword search over encrypted data is very important in cloud computing. To give security to unapproved data access, fine-grained access control is important in multi-owner system. Sometime authorized owner’s loss the secret key for some amount. Thus, tracing and revoking the unauthorized user who abuses secret key should be comprehended quickly. In this paper, propose a recognizable attribute based multiple keywords subset search system with verifiable outsourced decryption. Keyword search greatly enhances system usability by returning the matching files when users’ searching inputs exactly match the predefined keywords. In our solution, we extract the keywords from the file and encrypted the keywords then added into the index. Instead of storing file and searchable index on a cloud system, the proposed system will store the file on cloud and store searchable index on a private server. Which greatly reduces network congestion and representation overheads, also retrieval fast for files, and reduces the storage by file compression With enhanced security using encryption techniques and permission to access the data, through accurate security analysis, we show that our proposed solution is secure and privacy-preserving.

Keywords: Authorized searchable encryption, traceability, verifiable outsourced decryption, key escrow free, multiple keywords subset search