In the concept of Message Passing Interface (MPI) chatting and file transmission the decryption part will be done automatically. Here three types of keys are used; they are public, private and secret key. Keys are displayed to the destination only if they accept the request or else displaying of key is not possible in the destination side and also it won't give or establish the Connection. In largely spread clusters, computing nodes are naturally deployed in a variety of computing sites. The Information processed in a spread cluster is communal among a group of distributed processes or client by high-quality of messages passing protocols (e.g. Message Passing Interface - MPI) running on the Internet.