Secure Cloud Data Storage and Retrieval System Using Regenerating Code

Since technology started evolving people started using all the latest technology to make them updated and use the technology for their day-to-day life usage. In the exponential growth of technology, cloud computing plays an important role all over to world to store user’s data in it. Cloud storage provides higher storage space for less amount and can access it from anywhere, whenever you want to access the resources. In this paper, they have used a three-layer storage architecture to protect the data from unauthorized users and make the data available to the user’s all the time without any modification in it. The three-layer architecture includes the user local machine, fog layer, and the cloud layer. We propose a system where it provides confidentiality, integrity, availability of the user’s data and we are implementing new techniques like XOR-Combination to fragment and defragment the data and for creating regenerating blocks to retrieve the data successfully, hashing is used to check the integrity of the data while downloading it from the cloud server, block management is used to store the fragmented blocks in the different cloud server to make it secure and keep away it from attackers.