Cloud computing systems security is to improve when end-user communicates with the cloud server. In order to make a connection between end-user and the Cloud Server, first end-user or Cloud Server make sure that they are communicating with right counterpart. Multi-Key encryption concept is used to encrypt the request message or data which is sent from end-user or also from Cloud Server. Request message sent by end-user to cloud server should matches with the response received from by end-user

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... om cloud server. Multi-key concept takes more number of iteration when compared to single-key concept when trying to validate the requested message. Multi-Key concept is more secured than single-key. ---