Web socket based solution is considered more reliable and easy to implement in all kind of browsers. We need todeveloped a solution based on web socket to provide digital signature functionality to any web socket compatible web browser. It is a web socket server over TCP protocol. It listens on a designated port number on local IP address which receives web socket connection from browser. Based on the type of the service request from browser, it performs different operation and returns the result. All request and response are in the format of JSON.