Yexiaoxing · August 23, 2014 08:02
diff --git a/hotp.php b/hotp.php
 <?php
  //配置部分
 	$password = '这里是验证的密码';
 	$authkeypair = array(
 		'帐号标题' => 'Secret key',
 		'帐号标题2' => 'key2',
 	);
 ?>
 <!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml">
 	<head>
 		<title>===Google 二次验证网页版===</title>
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 		<style>
 			body{
 				font-family:"Consolas";
 				font-size:12pt;
 				color:#333;
 				width:220px;
 			}
 			.row{
 				clear:both;
 				border-bottom:#ccc solid 1px;
 			}
 			.left{
 				text-align:left;
 			}
 			.right{
 				text-align:right;
 				font-size:18pt;
 				color:#4286BE;
 			}
 			.cell{
 				padding:5px;
 			}
 			.row:hover{
 				background:#eee;
 			}
 			form{
 				padding:0;
 				margin:0;
 			}
 			input{
 				background:#fff;
 				border:dashed 1px #ccc;
 				font-size:18pt;
 				font-family:"Consolas";
 			}
 			input:hover{
 				background:#FAFAFA;
 			}
 			#time{
 				height:2px;
 				background:#6cf;
 			}
 		</style>
 	</head>
 	
 	<body>
 <?php
 	//include_once('authclass.php');
 	if(!isset($_REQUEST['key']) || $_REQUEST['key']!=$password){
 		die('<form method="POST"><input type="password" name="key" /><input type="submit" value="Go" /></form>');
 	}
 	$refresh = '<form method="POST" id="rf"><input type="hidden" name="key" value="'.$password.'" /><input type="submit" value="Refresh" id="t"/></form>';
 	echo '
 		<div class="row">
 			<div class="left cell">TOTP On Web</div>
 			<div id="time"></div>
 			<div class="right cell" style="display:none">'.$refresh.'</div>
 		</div>';
 	foreach ($authkeypair as $k => $p){
 		echo '<div class="row">';
 		$TimeStamp = Google2FA::get_timestamp();
 		$secretkey = Google2FA::base32_decode($p);
 		$otp = Google2FA::oath_hotp($secretkey, $TimeStamp);
 		echo '<div class="left cell">'.$k.'</div><div class="right cell">'.$otp.'</div></div>';
 	}
 ?>
 	<script>
 		var time = <?=($TimeStamp+1)*30-time();?>;
 		function refresh(){
 			time--;
 			//document.getElementById('t').value='Refresh('+time+')';
 			document.getElementById('time').style.width=(time/30)*100+'%';
 			if(time<=0){
 				document.getElementById('rf').submit();
 			}
 		}
 		intd = setInterval('refresh()',1000);
 	</script>
 	</body>
 <?php
 /**
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * PHP Google two-factor authentication module.
 *
 * See http://www.idontplaydarts.com/2011/07/google-totp-two-factor-authentication-for-php/
 * for more details
 *
 * @author Phil
 **/

 class Google2FA {

 	const keyRegeneration 	= 30;	// Interval between key regeneration
 	const otpLength		= 6;	// Length of the Token generated

 	private static $lut = array(	// Lookup needed for Base32 encoding
 		"A" => 0,	"B" => 1,
 		"C" => 2,	"D" => 3,
 		"E" => 4,	"F" => 5,
 		"G" => 6,	"H" => 7,
 		"I" => 8,	"J" => 9,
 		"K" => 10,	"L" => 11,
 		"M" => 12,	"N" => 13,
 		"O" => 14,	"P" => 15,
 		"Q" => 16,	"R" => 17,
 		"S" => 18,	"T" => 19,
 		"U" => 20,	"V" => 21,
 		"W" => 22,	"X" => 23,
 		"Y" => 24,	"Z" => 25,
 		"2" => 26,	"3" => 27,
 		"4" => 28,	"5" => 29,
 		"6" => 30,	"7" => 31
 	);

 	/**
 	 * Generates a 16 digit secret key in base32 format
 	 * @return string
 	 **/
 	public static function generate_secret_key($length = 16) {
 		$b32 	= "234567QWERTYUIOPASDFGHJKLZXCVBNM";
 		$s 	= "";

 		for ($i = 0; $i < $length; $i++)
 			$s .= $b32[rand(0,31)];

 		return $s;
 	}

 	/**
 	 * Returns the current Unix Timestamp devided by the keyRegeneration
 	 * period.
 	 * @return integer
 	 **/
 	public static function get_timestamp() {
 		return floor(microtime(true)/self::keyRegeneration);
 	}

 	/**
 	 * Decodes a base32 string into a binary string.
 	 **/
 	public static function base32_decode($b32) {

 		$b32 	= strtoupper($b32);

 		if (!preg_match('/^[ABCDEFGHIJKLMNOPQRSTUVWXYZ234567]+$/', $b32, $match))
 			throw new Exception('Invalid characters in the base32 string.');

 		$l 	= strlen($b32);
 		$n	= 0;
 		$j	= 0;
 		$binary = "";

 		for ($i = 0; $i < $l; $i++) {

 			$n = $n << 5; 				// Move buffer left by 5 to make room
 			$n = $n + self::$lut[$b32[$i]]; 	// Add value into buffer
 			$j = $j + 5;				// Keep track of number of bits in buffer

 			if ($j >= 8) {
 				$j = $j - 8;
 				$binary .= chr(($n & (0xFF << $j)) >> $j);
 			}
 		}

 		return $binary;
 	}

 	/**
 	 * Takes the secret key and the timestamp and returns the one time
 	 * password.
 	 *
 	 * @param binary $key - Secret key in binary form.
 	 * @param integer $counter - Timestamp as returned by get_timestamp.
 	 * @return string
 	 **/
 	public static function oath_hotp($key, $counter)
 	{
 	    if (strlen($key) < 8)
 		throw new Exception('Secret key is too short. Must be at least 16 base 32 characters');

 	    $bin_counter = pack('N*', 0) . pack('N*', $counter);		// Counter must be 64-bit int
 	    $hash 	 = hash_hmac ('sha1', $bin_counter, $key, true);

 	    return str_pad(self::oath_truncate($hash), self::otpLength, '0', STR_PAD_LEFT);
 	}

 	/**
 	 * Verifys a user inputted key against the current timestamp. Checks $window
 	 * keys either side of the timestamp.
 	 *
 	 * @param string $b32seed
 	 * @param string $key - User specified key
 	 * @param integer $window
 	 * @param boolean $useTimeStamp
 	 * @return boolean
 	 **/
 	public static function verify_key($b32seed, $key, $window = 4, $useTimeStamp = true) {

 		$timeStamp = self::get_timestamp();

 		if ($useTimeStamp !== true) $timeStamp = (int)$useTimeStamp;

 		$binarySeed = self::base32_decode($b32seed);

 		for ($ts = $timeStamp - $window; $ts <= $timeStamp + $window; $ts++)
 			if (self::oath_hotp($binarySeed, $ts) == $key)
 				return true;

 		return false;

 	}

 	/**
 	 * Extracts the OTP from the SHA1 hash.
 	 * @param binary $hash
 	 * @return integer
 	 **/
 	public static function oath_truncate($hash)
 	{
 	    $offset = ord($hash[19]) & 0xf;

 	    return (
 	        ((ord($hash[$offset+0]) & 0x7f) << 24 ) |
 	        ((ord($hash[$offset+1]) & 0xff) << 16 ) |
 	        ((ord($hash[$offset+2]) & 0xff) << 8 ) |
 	        (ord($hash[$offset+3]) & 0xff)
 	    ) % pow(10, self::otpLength);
 	}



 }
	<?php
	//配置部分
	$password = '这里是验证的密码';
	$authkeypair = array(
	'帐号标题' => 'Secret key',
	'帐号标题2' => 'key2',
	);
	?>
	<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">
	<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	<title>===Google 二次验证网页版===</title>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<style>
	body{
	font-family:"Consolas";
	font-size:12pt;
	color:#333;
	width:220px;
	}
	.row{
	clear:both;
	border-bottom:#ccc solid 1px;
	}
	.left{
	text-align:left;
	}
	.right{
	text-align:right;
	font-size:18pt;
	color:#4286BE;
	}
	.cell{
	padding:5px;
	}
	.row:hover{
	background:#eee;
	}
	form{
	padding:0;
	margin:0;
	}
	input{
	background:#fff;
	border:dashed 1px #ccc;
	font-size:18pt;
	font-family:"Consolas";
	}
	input:hover{
	background:#FAFAFA;
	}
	#time{
	height:2px;
	background:#6cf;
	}
	</style>
	</head>

	<body>
	<?php
	//include_once('authclass.php');
	if(!isset($_REQUEST['key']) \|\| $_REQUEST['key']!=$password){
	die('<form method="POST"><input type="password" name="key" /><input type="submit" value="Go" /></form>');
	}
	$refresh = '<form method="POST" id="rf"><input type="hidden" name="key" value="'.$password.'" /><input type="submit" value="Refresh" id="t"/></form>';
	echo '
	<div class="row">
	<div class="left cell">TOTP On Web</div>
	<div id="time"></div>
	<div class="right cell" style="display:none">'.$refresh.'</div>
	</div>';
	foreach ($authkeypair as $k => $p){
	echo '<div class="row">';
	$TimeStamp = Google2FA::get_timestamp();
	$secretkey = Google2FA::base32_decode($p);
	$otp = Google2FA::oath_hotp($secretkey, $TimeStamp);
	echo '<div class="left cell">'.$k.'</div><div class="right cell">'.$otp.'</div></div>';
	}
	?>
	<script>
	var time = <?=($TimeStamp+1)*30-time();?>;
	function refresh(){
	time--;
	//document.getElementById('t').value='Refresh('+time+')';
	document.getElementById('time').style.width=(time/30)*100+'%';
	if(time<=0){
	document.getElementById('rf').submit();
	}
	}
	intd = setInterval('refresh()',1000);
	</script>
	</body>
	<?php
	/**
	* This program is free software: you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation, either version 3 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	*
	* PHP Google two-factor authentication module.
	*
	* See http://www.idontplaydarts.com/2011/07/google-totp-two-factor-authentication-for-php/
	* for more details
	*
	* @author Phil
	**/

	class Google2FA {

	const keyRegeneration = 30; // Interval between key regeneration
	const otpLength = 6; // Length of the Token generated

	private static $lut = array( // Lookup needed for Base32 encoding
	"A" => 0, "B" => 1,
	"C" => 2, "D" => 3,
	"E" => 4, "F" => 5,
	"G" => 6, "H" => 7,
	"I" => 8, "J" => 9,
	"K" => 10, "L" => 11,
	"M" => 12, "N" => 13,
	"O" => 14, "P" => 15,
	"Q" => 16, "R" => 17,
	"S" => 18, "T" => 19,
	"U" => 20, "V" => 21,
	"W" => 22, "X" => 23,
	"Y" => 24, "Z" => 25,
	"2" => 26, "3" => 27,
	"4" => 28, "5" => 29,
	"6" => 30, "7" => 31
	);

	/**
	* Generates a 16 digit secret key in base32 format
	* @return string
	**/
	public static function generate_secret_key($length = 16) {
	$b32 = "234567QWERTYUIOPASDFGHJKLZXCVBNM";
	$s = "";

	for ($i = 0; $i < $length; $i++)
	$s .= $b32[rand(0,31)];

	return $s;
	}

	/**
	* Returns the current Unix Timestamp devided by the keyRegeneration
	* period.
	* @return integer
	**/
	public static function get_timestamp() {
	return floor(microtime(true)/self::keyRegeneration);
	}

	/**
	* Decodes a base32 string into a binary string.
	**/
	public static function base32_decode($b32) {

	$b32 = strtoupper($b32);

	if (!preg_match('/^[ABCDEFGHIJKLMNOPQRSTUVWXYZ234567]+$/', $b32, $match))
	throw new Exception('Invalid characters in the base32 string.');

	$l = strlen($b32);
	$n = 0;
	$j = 0;
	$binary = "";

	for ($i = 0; $i < $l; $i++) {

	$n = $n << 5; // Move buffer left by 5 to make room
	$n = $n + self::$lut[$b32[$i]]; // Add value into buffer
	$j = $j + 5; // Keep track of number of bits in buffer

	if ($j >= 8) {
	$j = $j - 8;
	$binary .= chr(($n & (0xFF << $j)) >> $j);
	}
	}

	return $binary;
	}

	/**
	* Takes the secret key and the timestamp and returns the one time
	* password.
	*
	* @param binary $key - Secret key in binary form.
	* @param integer $counter - Timestamp as returned by get_timestamp.
	* @return string
	**/
	public static function oath_hotp($key, $counter)
	{
	if (strlen($key) < 8)
	throw new Exception('Secret key is too short. Must be at least 16 base 32 characters');

	$bin_counter = pack('N', 0) . pack('N', $counter); // Counter must be 64-bit int
	$hash = hash_hmac ('sha1', $bin_counter, $key, true);

	return str_pad(self::oath_truncate($hash), self::otpLength, '0', STR_PAD_LEFT);
	}

	/**
	* Verifys a user inputted key against the current timestamp. Checks $window
	* keys either side of the timestamp.
	*
	* @param string $b32seed
	* @param string $key - User specified key
	* @param integer $window
	* @param boolean $useTimeStamp
	* @return boolean
	**/
	public static function verify_key($b32seed, $key, $window = 4, $useTimeStamp = true) {

	$timeStamp = self::get_timestamp();

	if ($useTimeStamp !== true) $timeStamp = (int)$useTimeStamp;

	$binarySeed = self::base32_decode($b32seed);

	for ($ts = $timeStamp - $window; $ts <= $timeStamp + $window; $ts++)
	if (self::oath_hotp($binarySeed, $ts) == $key)
	return true;

	return false;

	}

	/**
	* Extracts the OTP from the SHA1 hash.
	* @param binary $hash
	* @return integer
	**/
	public static function oath_truncate($hash)
	{
	$offset = ord($hash[19]) & 0xf;

	return (
	((ord($hash[$offset+0]) & 0x7f) << 24 ) \|
	((ord($hash[$offset+1]) & 0xff) << 16 ) \|
	((ord($hash[$offset+2]) & 0xff) << 8 ) \|
	(ord($hash[$offset+3]) & 0xff)
	) % pow(10, self::otpLength);
	}



	}