International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
In cloud computing storing data into cloud and retrieving data from the cloud with more securely is not a simple task and providing security to stored data is very difficult. This paper discusses how to overcome these problems. Before storing data the cloud must verify the authenticity of the series, without knowing the user's identity it should not allow user to operate on the data. In this paper, the authors are proposing concepts of authentication of users, secret key sharing, and encryption of data and decryption of data using cryptography technique. The scheme prevents replay attacks and supports creation, modification, and reading data stored in the cloud.