Enhancement of Data Security in Cloud Computing by Generating OTP

Abstract Cloud computing is technology that offers populace the ability to share information, resources and provides certain services to the people connected through the network . In this the resources are provided according to the need and requirements of the user. In cloud the user’s data are moved to the large data centers, where the data must be secure in the hands of providers.The problem we generally encounter in cloud computing is to provide security to cloud user’s data when it is uploaded on cloud. The various organizations have expressed concerns about these security aspects that exist regarding the implementation of cloud computing. One of the major perspective is to provide securityto one’s data which is stored remotely from the user’s location.. This paper describes an enhanced approach for the already using data security model in cloud environment. The proposed data security model includesgeneration of onetime password (OTP) using SHA(Secure Hash Algorithm)for user authentication process. This paper also includes a comparative of MD5 and SHA algorithms for the better implementation of the model. This model best suits for any of the layers in it, e.g.