International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Cloud computing has emerged as a new model of computing. It is a paradigm shift in computing history. Cloud services can be availed without capital investment as they are commoditized. Cloud users get services in pay per use fashion and enjoy many benefits of cloud including low cost and accessibility from anywhere in the world. However, users have security concerns as they outsource their valuable business data to cloud and treat the cloud as \"Untrusted\".