Cloud Computing Security through Cryptography for Banking Sector

Cloud computing have made the remarkable changes in view of small clients and suitably federal provision of computing resources. Clients’ be short of direct resource control in the cloud prompts concern about the latent for data privacy violations, particularly escape of responsive information by service providers. Cryptography providse the way which makes the secure things. This paper tries to justify that cryptography alone can’t enforce the privacy demanded by common cloud computing services. This paper formally defines a hierarchy of natural classes of private cloud applications, and show that no cryptographic protocol can implement those classes where data is shared among clients. Finally this study speculate that users of cloud services also need to rely on other forms of privacy enforcement, such as security in hardware, distributed computing, and complex trust network.