d><td>is public modulus (p*q), NULL is invalid param. </td></tr>
    <tr><td class="paramname">RN</td><td>is pre-calculated modulus RmodN </td></tr>
    <tr><td class="paramname">RRN</td><td>is pre-calculated modulus RRmodN </td></tr>
    <tr><td class="paramname">P</td><td>is first factor, a positive integer. </td></tr>
    <tr><td class="paramname">Q</td><td>is second factor, a positive integer. </td></tr>
    <tr><td class="paramname">Pub</td><td>is public exponent to protect against the fault insertions