Cloud Data Security using Authentication and Encryption Technique

 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 centres. 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.