title: Encrypting exchanged data in a RESTful
body: <p>I have created a <code>Restfull</code> <code>web-service</code> in <code>java</code> that is consumed by an <code>android application</code>. The work is almost done. </p>
  
  <p>Now I feel the need to secure my <code>web-service</code>. I don't want to send a <code>login</code> and <code>password</code> for that purpose, because I'm already asking the user for it, and testing whether he exists in my <code>database</code> or not. What I want is to <code>encrypt</code> exchanged data.</p>
  
  <p>Do you have any idea how can I integrate that ? </p>