The goal of this system is to provide data security protection mechanism for cloud storage system with three factors.Security is the most important factor for data storage and transmission. In this system it allows a sender to send a message in encrypted form to the receiver with the help of cloud server. The sender only needs to know the identity of the receiver but there is no need to other information. The receiver needs to control two things in order to decrypt the cipher text. The first factor is his/her secrete key stored in the computer. The second is personal device which is unique, connected to the computer.
As we know that cloud computing is a pure internet based service which is permit to its users for store large amount of data on cloud and use whenever the required from anywhere ,any part of world using any terminal. Also cloud computing is another facility is data sharing and access remotely. As the data stored in cloud is expose to different attacks by hackers or unauthorized users and it is becomes very difficult to maintain security and privacy of data. So the solution provided by this situation is to our system is “Three factor Security“for data. In this system we protect data by using all three factors of authentication, data security, privacy and verification at the same time. In this paper we use figure print and 3DES algorithm to protect confidentiality,privacy of stored data in cloud.
Keywords:-Three-factor, factor revocability, security, cloud storage.