A Secure File storage in Cloud Computing using Hybrid Cryptography

Abstract

Currently cloud computing helps in storing huge amounts of data in related to various fields such as manufacturing, military schools, etc. Upon request from the client, the data are collected from the cloud. In order to store information on the cloud, there are several challenges, the solution to these problems are provided by the Cryptography and steganography techniques. The high-level data protection in cloud computing is to use algorithm in unsuccessful. In this paper, we introduced a new safety mechanism using symmetric key cryptography algorithms and steganography. Blowfish, RC6 and BRA algorithms are used in this proposed system to provide data with block wise protection. For key information protection, all main algorithm size is 128 bit. LSB steganography technique is implemented. Key information includes that part of the file is encrypted by splitting the algorithm and key. File into eight sections. Using different algorithms, each part of the file is encrypted. Both portions of the file are simultaneously encrypted using the technique of multithreading. Data encryption Using LSB technique, keys are inserted into the cover image. Stego picture is sent by email to a legitimate recipient. Reverse encryption method is implemented for file decryption purposes.