Revolutionizing Technology has drastically changed the direction of computing. Starting from the evolution of the Web in 1990's to the growth of the internet in 2000, cloud Technology has proven to be next technology milestone surpassed by the previous era of ingenuity. The Business's which were considered to be fixed on-premise infrastructure oriented services have converted to cloud shared business's where the Business's don't have to spend high capital resources for the infrastructure,since the hardware provided by the service provider is now shared by multiple organizations,thus reducing cost and improving usability and performance for both the cloud user and the provider. Cloud enables more time and resources to be spent on the idea construction and application development,rather than spending time on deciding the hardware and computer software stack needed for the application. This results in fast deployment and early feedback. One of the major issues in cloud computing is the security of data being stored on the provider's cloud and privacy while the data is being transmitted. This paper deals with the methods of providing security by data encryption. Various encryption methods of block cipher algorithms such as Rijndael, Blowfish and Triple DES are implemented for providing solutions to cloud security.

Cloud Security data encryption Rijndael Blowfish Triple DES