Abstract

Cloud Computing provides us a means by  which  we  can  access  the  applications  as  utilities,  over the internet. It allows us to create, configure, and customize the business applications online. The concept of cloud computing grows very rapidly in recent years. Nowadays many users store their data on Cloud. Data storage security refers to the security of data on the storage media.  So,  Security  is  an  major concern  in  cloud  computing  for  ensuring  clients  data  is placed on the secure mode in the cloud. Data must not be stolen by the third party so authentication of client becomes a mandatory task. Data in cloud should be stored in encrypted form. This paper deals with the methods of providing security by data encryption using Blowfish Algorithm and to ensure that unauthorized intruder can't access your file or data in cloud.