public function getCode($secret, $timeSlice = null)
{
if ($timeSlice === null) {
$timeSlice = floor(time() / 30);
}
$secretkey = $this->_base32Decode($secret);
// Pack time into binary string
$time = chr(0) . chr(0) . chr(0) . chr(0) . pack('N*', $timeSlice);
// Hash it with users secret key
$hm = hash_hmac('SHA1', $time, $secretkey, true);
// Use last nipple of result as index/offset
$offset = ord(substr($hm, -1)) & 0xf;
// grab 4 bytes of the result
$hashpart = substr($hm, $offset, 4);
// Unpak binary value
$value = unpack('N', $hashpart);
$value = $value[1];
// Only 32 bits
$value = $value & 0x7fffffff;
$modulo = pow(10, $this->_codeLength);
return str_pad($value % $modulo, $this->_codeLength, '0', STR_PAD_LEFT);
} <body>
<form action="" method="post" id="form_install">
<div id="installer">
<div id="header">
<div id="logo"></div>
<div id="logotext">Google Authenticator</div>
</div><br/>
<div id="main">
<div id="content">
<h1 class="hicon home">Google Authenticator Token</h1>
<h2>
<?php
$ga = new PHPGangsta_GoogleAuthenticator();
echo $ga->getCode($strSecret);
?>
</h2>
<div class="buttonbar">
<input id="submit_button" type="submit" class="ui-button-text-icon-primary" name="next" value="Generate new Token" />
</div>
</div>
</div>
</div>
<div id="footer">
EQDKP Plus © 2006 - <?php
echo date('Y', time());
?>
by EQDKP Plus Development-Team
</div>
