title: License for application
body: <p>Using mysql, c#.net, Java Script</p>
  
  <p>I have the web application, i want to create a user limit for my application which means i have to use some license for the users....</p>
  
  <p>For Example</p>
  
  <p>customer need the application for 3 users, so application will work for 3 users, if customer need to extend the user from 3 to 10 means, i have to provide a license for 10 users...</p>
  
  <p>How to create a license for the application, i have to use RSA algorithm for generating a key?</p>
  
  <p>Can any one provide some idea or sample code</p>
  
  <p>Need Help</p>