    <tr><td class="paramname">Pub</td><td>is the public exponent to protect against the fault insertions. </td></tr>
    <tr><td class="paramname">Mod</td><td>is the public modulus (p*q), if NULL, calculated internally. </td></tr>
    <tr><td class="paramname">Len</td><td>is length of the full-length integer in bits. </td></tr>
    <tr><td class="paramname">Res</td><td>is result of exponentiation r = (h^e) mod n.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><ul>
<li>XST_