title: What is the difference between pkcs v1.5 padding and pkcs v2.1 padding?
body: <p>I have just a basic knowledge about padding techniques. For RSA padding these two padding techniques are available. </p>
  
  <ol>
  <li>Can anyone explain clearly about these two padding schemes, their own pros and cons?</li>
  <li>Also which padding is suitable for which type of situations?</li>
  </ol>