Proposed two layer cryptography key generation for off-premise cloud computing

Data Growth and Data complexity will increase day by day. Present day needs of data will require unstructured and more access will lead to more data backup, audit, security concerns and need of preparing reduplication. Term cloud computing has opened entire new domain of computability, reliability and efficiency for organizations in term of private cloud computing. It can now focus on providing targeted services and overcome challenges to consumers rather than considering infrastructure and resource issues. Nowadays, sharing secure data to another person without authentication and authorization it with can be more and more difficult for the off-premise cloud which leads to some key points like the security of cloud data should be considered, sharing of cloud data as per requirement should be done. This research paper is based on providing some mechanism to allow secure file sharing for off-premise cloud computing among various cloud users. This paper proposes a framework that can be followed easily to share the file using roll management concept which residing on the cloud with another cloud user. In this framework, a concept of cryptography has been used to generate the secure key that can be shared among users. Cryptography allows encryption and decryption of different normal text to some cipher text that cannot be interpreted easily. This paper proposes the secure mechanism of generating key, sharing a key and validating use of the key for given file.