="paramname"><em>HashedData</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>This function does a HMAC_SHA256 transform: SHA256(K XOR opad, SHA256(K XOR ipad, text)) </p>
<p>ipad is the byte 0x36 repeated 64 times opad is the byte 0x5c repeated 64 times and text is the data being protected</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramn