Distributed Secure File Storage System Using Cryptography

Abstract

In recent times, cloud storage and distributed system have risen to great success owing to their easy use and availability to users. These have helped users to gain access to their data anywhere, anytime solely with the help of internet. But all these features come with greater risks and security threats. Traditional data security methods cannot be considered fully reliable given the advancements in cryptanalysis techniques and sophistication of cyber-attacks. Encryption alone is insufficient to ensure data security and integrity. In this paper, we provide an approach to create a secure distributed file system. We propose a two-layer architecture where the data will first involve interaction with the server. Once we ensure authenticity and integrity of the data, the next step involves storing it securely on the cloud which involves interaction of server with the distributed system which will be completely abstract for the user. The first layer makes the use of digital signature for client authentication and data integrity. The second layer will make use of attribute-based distributed storage of data in encrypted form with hashing techniques to remove redundancy in the data stored in the system.