Abstract

Cloud Computing has been envisioned as the next generation architecture of IT Enterprise In cloud computing application software and databases are moving to the centralized large data centers This mechanism brings about many new challenges which have not been well understood Security and privacy concerns however are among the top concerns standing in the way of wider adoption of cloud In cloud computing the main concern is to provide the security to end user to protect files or data from unauthorized user Security is the main intention of any technology through which unauthorized intruder can t access your file or data in cloud We have designed one proposed design and architecture that can help to encrypt and decrypt the file at the user side that provide security to data at rest as well as while moving In this research paper we have used the Rijndael Encryption Algorithm along with EAP-CHAP