Fog Computing Application for Cloud Servers

In order to reduce the burden of maintaining big data, more and more enterprises and organizations have chosen to outsource data storage to cloud storage providers. Moreover, all the advantages of cloud computing are taken into consideration while storing sensitive data on the cloud. Cloud users cannot trust only on the cloud service provider for the security of their sensitive data stored on the cloud. In this paper we are making use of fog computing to overcome the problem with the semi-trusted cloud service provider, while user will upload the file and the file will be uploaded on the fog node, here the fog node performs the encryption of the uploaded file and then divide the file into blocks and hash of the data will be computed. And only 5% of data will be stored on the fog device then the remaining 95% data will be forwarded to the cloud on the cloud we are again going to perform encryption of the data to make it more secure and the data will be divided into the blocks and stored on the cloud with the computing the hash of the data. It maintains the privacy of the stored data due to double encryption of the data and also the file is stored on two different locations so if CSP tries to access the file then he cannot get whole data.