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<?php echo "<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>\n"; ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<!-- $Id: passencrypt.php,v 1.6 2005/09/18 11:14:56 rurban Exp $ -->
<title>Password Encryption Tool</title>
<!--
Copyright 1999, 2000, 2001, 2002 $ThePhpWikiProgrammingTeam
This file is part of PhpWiki.
PhpWiki is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
PhpWiki is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with PhpWiki; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-->
</head>
<body>
<h1>Password Encryption Tool</h1>
<?php
/**
* Seed the random number generator.
*
* better_srand() ensures the randomizer is seeded only once.
*
* How random do you want it? See:
* http://www.php.net/manual/en/function.srand.php
* http://www.php.net/manual/en/function.mt-srand.php
*/
function better_srand($seed = '') {
static $wascalled = FALSE;
if (!$wascalled) {
if ($seed === '') {
list($usec, $sec) = explode(" ", microtime());
if ($usec > 0.1)
$seed = (double) $usec * $sec;
else // once in a while use the combined LCG entropy
$seed = (double) 1000000 * substr(uniqid("", true), 13);
}
if (function_exists('mt_srand')) {
mt_srand($seed); // mersenne twister
} else {
srand($seed);
}
$wascalled = TRUE;
}
}
function rand_ascii($length = 1) {
better_srand();
$s = "";
for ($i = 1; $i <= $length; $i++) {
// return only typeable 7 bit ascii, avoid quotes
if (function_exists('mt_rand'))
// the usually bad glibc srand()
$s .= chr(mt_rand(40, 126));
else
$s .= chr(rand(40, 126));
}
return $s;
}
////
// Function to create better user passwords (much larger keyspace),
// suitable for user passwords.
// Sequence of random ASCII numbers, letters and some special chars.
// Note: There exist other algorithms for easy-to-remember passwords.
function random_good_password ($minlength = 5, $maxlength = 8) {
$newpass = '';
// assume ASCII ordering (not valid on EBCDIC systems!)
$valid_chars = "!#%&+-.0123456789=@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz";
$start = ord($valid_chars);
$end = ord(substr($valid_chars, -1));
better_srand();
if (function_exists('mt_rand')) // mersenne twister
$length = mt_rand($minlength, $maxlength);
else // the usually bad glibc rand()
$length = rand($minlength, $maxlength);
while ($length > 0) {
if (function_exists('mt_rand'))
$newchar = mt_rand($start, $end);
else
$newchar = rand($start, $end);
if (! strrpos($valid_chars, $newchar) )
continue; // skip holes
$newpass .= sprintf("%c", $newchar);
$length--;
}
return $newpass;
}
/** PHP5 deprecated old-style globals if !(bool)ini_get('register_long_arrays').
* See Bug #1180115
* We want to work with those old ones instead of the new superglobals,
* for easier coding.
*/
foreach (array('SERVER','GET','POST','ENV') as $k) {
if (!isset($GLOBALS['HTTP_'.$k.'_VARS']) and isset($GLOBALS['_'.$k]))
$GLOBALS['HTTP_'.$k.'_VARS'] =& $GLOBALS['_'.$k];
}
unset($k);
$posted = $GLOBALS['HTTP_POST_VARS'];
if (!empty($posted['create'])) {
$new_password = random_good_password();
echo "<p>The newly created random password is:<br />\n<br /> \n<tt><strong>",
htmlentities($new_password),"</strong></tt></p>\n";
$posted['password'] = $new_password;
$posted['password2'] = $new_password;
}
if (($posted['password'] != "")
&& ($posted['password'] == $posted['password2'])) {
$password = $posted['password'];
/**
* http://www.php.net/manual/en/function.crypt.php
*/
// Use the maximum salt length the system can handle.
$salt_length = max(CRYPT_SALT_LENGTH,
2 * CRYPT_STD_DES,
9 * CRYPT_EXT_DES,
12 * CRYPT_MD5,
16 * CRYPT_BLOWFISH);
// Generate the encrypted password.
$encrypted_password = crypt($password, rand_ascii($salt_length));
$debug = $HTTP_GET_VARS['debug'];
if ($debug)
echo "The password was encrypted using a salt length of: $salt_length<br />\n";
echo "<p>The encrypted password is:<br />\n<br /> \n<tt><strong>",
htmlentities($encrypted_password),"</strong></tt></p>\n";
echo "<hr />\n";
}
else if ($posted['password'] != "") {
echo "The passwords did not match. Please try again.<br />\n";
}
if (empty($REQUEST_URI))
$REQUEST_URI = $HTTP_ENV_VARS['REQUEST_URI'];
if (empty($REQUEST_URI))
$REQUEST_URI = $HTTP_SERVER_VARS['REQUEST_URI'];
?>
<form action="<?php echo $REQUEST_URI ?>" method="post">
<fieldset><legend accesskey="P">Encrypt</legend>
Enter a password twice to encrypt it:<br />
<input type="password" name="password" value="" /><br />
<input type="password" name="password2" value="" /> <input type="submit" value="Encrypt" />
</fieldset>
<br />
or:<br />
<br />
<fieldset><legend accesskey="C">Generate </legend>
Create a new random password: <input type="submit" name="create" value="Create" />
</fieldset>
</form>
</body>
</html>
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