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Modhex_Calculator.php
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Modhex_Calculator.php
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<?php
/*
* Created on May 25, 2009
*
*/
require_once 'Modhex.php';
$FMT_TEXT = 'Plain text';
$FMT_DEC = 'Number';
$FMT_MODHEX = 'Modhex';
$FMT_B64 = 'Base64';
$FMT_HEX = 'Hex';
$FMT_OTP = 'OTP';
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<meta http-equiv="Cache-Control" content="no-cache, must-revalidate">
<title>Modhex Calculator</title>
<link rel="stylesheet" type="text/css" href="style.css" />
<style type="text/css">
input[type="radio"] {
width: 45px;
}
</style>
</head>
<body onLoad="document.getElementById('srctext').focus();">
<div id="stripe">
</div>
<div id="container">
<div id="logoArea">
<img src="yubicoLogo.jpg" alt="Yubico Logo" width="150" height="75"/>
</div>
<div id="greenBarContent">
<div id="greenBarImage">
<img src="yubikey.jpg" alt="yubikey" width="150" height="89"/>
</div>
<div id="greenBarText">
<h3>
Modhex Calculator
</h3>
</div>
</div>
<div id="bottomContent">
<?php
$srctext = trim($_REQUEST["srctext"]);
$srcfmt = $_REQUEST["srcfmt"];
$srcfmt_org = $srcfmt? $srcfmt: "P";
$srcfmt_desc = '';
if (strlen($srctext) > 0) {
if($srcfmt == "O") {
$srcfmt_desc = $FMT_OTP;
$srctext = substr($srctext, 0, 12);
$srcfmt = "M";
}
$b64txt = $srctext;
if($srcfmt == "P") {
$srcfmt_desc = $FMT_TEXT;
$b64txt = base64_encode($srctext);
} else if ($srcfmt == "H") {
$srcfmt_desc = $FMT_HEX;
$hexval = $srctext;
$b64txt = hexToB64($hexval);
//echo 'Test B64 : '.$b64txt.' :: '.$hexval;
} else if ($srcfmt == "M") {
if($srcfmt_desc == '') {
$srcfmt_desc = $FMT_MODHEX;
}
if((strlen($srctext) % 2) == 1) {
$srctext = 'c' . $srctext;
}
$b64txt = modhexToB64($srctext);
} else if ($srcfmt == "N") {
$srcfmt_desc = $FMT_DEC;
//$numval = intval($srctext);
$numval = gmp_init($srctext, 10);
$hexval = gmp_strval($numval,16);
//echo 'Test Val : '.$numval.' :: '.$hexval;
$b64txt = hexToB64($hexval);
//echo 'Test B64 : '.$b64txt;
} else {
$srcfmt_desc = $FMT_B64;
}
//$devId_b64 = modhexToB64($devId);
?>
<fieldset>
<legend><b>Result</b></legend>
<b>Input string: </b><?php echo htmlspecialchars($srctext);?> (<?php echo $srcfmt_desc;?>)<br/><br>
<b>Output string</b> (in various formats):
<ul>
<li><?php echo $FMT_TEXT . ': ' . htmlspecialchars(base64_decode($b64txt)); ?></li>
<li><?php echo $FMT_DEC . ': ' . htmlspecialchars(gmp_strval(gmp_init(b64ToHex($b64txt),16))); ?></li>
<li><?php echo $FMT_MODHEX . ' encoded: ' . htmlspecialchars(b64ToModhex($b64txt)); ?></li>
<li><?php echo $FMT_B64 . ' encoded: ' . htmlspecialchars($b64txt); ?></li>
<li><?php echo $FMT_HEX . ' encoded: ' . htmlspecialchars(b64ToHex($b64txt)); ?></li>
</ul>
</fieldset>
<br>
<?php
}
?>
<form action=Modhex_Calculator.php method=post autocomplete=off>
<fieldset>
<legend><b>Number scheme calculator</b></legend>
<ol>
<li>Choose format.</li>
<li>Enter string.</li>
<li>Press "Convert to all formats" button.</li>
</ol>
<b>Source format:</b><br/>
<input type="radio" name="srcfmt" value="P" <?php echo ($srcfmt_org == "P")?'checked':''; ?>>Plain text<br/>
<input type="radio" name="srcfmt" value="N" <?php echo ($srcfmt_org == "N")?'checked':''; ?>>Number<br/>
<input type="radio" name="srcfmt" value="B" <?php echo ($srcfmt_org == "B")?'checked':''; ?>>Base64<br/>
<input type="radio" name="srcfmt" value="H" <?php echo ($srcfmt_org == "H")?'checked':''; ?>>Hex<br/>
<input type="radio" name="srcfmt" value="O" <?php echo ($srcfmt_org == "O")?'checked':''; ?>>OTP<br/>
<input type="radio" name="srcfmt" value="M" <?php echo ($srcfmt_org == "M")?'checked':''; ?>>Modhex<br/><br/>
<b>String:</b>
<input name="srctext" id="srctext" value="<?php echo htmlspecialchars($srctext); ?>" size=50 maxlength=50><br/><br/>
<input type="submit" value="Convert to all formats">
</fieldset>
</form>
</div>
</div>
</body>
</html>