Providing Maximum Security to the User Data Uploaded On Cloud

In today’s world the important factor to be consider in cloud is security of the data, where user stores the data on a cloud. For providing the protection to the data on cloud the cloud service providers take the charges from the different users. In this paper it is most important to improve security guarantees. Authentication is also must as well as when you upload or download files in cloud using various methodology. It is important to identify a user who is taking the benefit of using cloud at each time when we provide them a file to a user. This proposed paper focuses on the mechanisms like two fish Algorithm for encryption and Decryption purpose, Time based onetime-password Algorithm is using for user authentication and file authentication can AES algorithm with the concept of key management which is quantum key generation. Encryption and decryption can be done by using the algorithm like Two Fish. Authentication of user can be done by using TOTP- a time based onetime-password algorithm.IP restriction also provide over the network, file access user log, data leakage and security alarm to the user for data security, one time password also provide at the time of login and downloading