1 <?php printf("<?xml version=\"1.0\" encoding=\"%s\"?>\n", 'iso-8859-1'); ?>
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4 <html xmlns="http://www.w3.org/1999/xhtml">
6 <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
7 <!-- $Id: passencrypt.php,v 1.3 2002-09-08 18:34:35 rurban Exp $ -->
8 <title>Password Encryption Tool</title>
10 Copyright 1999, 2000, 2001, 2002 $ThePhpWikiProgrammingTeam
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26 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 <h1>Password Encryption Tool</h1>
33 * Seed the random number generator.
35 * better_srand() ensures the randomizer is seeded only once.
37 * How random do you want it? See:
38 * http://www.php.net/manual/en/function.srand.php
39 * http://www.php.net/manual/en/function.mt-srand.php
41 function better_srand($seed = '') {
42 static $wascalled = FALSE;
45 list($usec,$sec)=explode(" ",microtime());
47 $seed = (double) $usec * $sec;
48 else // once in a while use the combined LCG entropy
49 $seed = (double) 1000000 * substr(uniqid("",true),13);
51 if (function_exists('mt_srand')) {
52 mt_srand($seed); // mersenne twister
60 function rand_ascii($length = 1) {
63 for ($i = 1; $i <= $length; $i++) {
64 // return only typeable 7 bit ascii, avoid quotes
65 if (function_exists('mt_rand'))
66 // the usually bad glibc srand()
67 $s .= chr(mt_rand(40, 126));
69 $s .= chr(rand(40, 126));
75 // Function to create better user passwords (much larger keyspace),
76 // suitable for user passwords.
77 // Sequence of random ASCII numbers, letters and some special chars.
78 // Note: There exist other algorithms for easy-to-remember passwords.
79 function random_good_password ($minlength = 5, $maxlength = 8) {
81 // assume ASCII ordering (not valid on EBCDIC systems!)
82 $valid_chars = "!#%&+-.0123456789=@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz";
83 $start = ord($valid_chars);
84 $end = ord(substr($valid_chars,-1));
86 if (function_exists('mt_rand')) // mersenne twister
87 $length = mt_rand($minlength, $maxlength);
88 else // the usually bad glibc rand()
89 $length = rand($minlength, $maxlength);
91 if (function_exists('mt_rand'))
92 $newchar = mt_rand($start, $end);
94 $newchar = rand($start, $end);
95 if (! strrpos($valid_chars,$newchar) ) continue; // skip holes
96 $newpass .= sprintf("%c",$newchar);
102 $posted = $GLOBALS['HTTP_POST_VARS'];
103 if (!empty($posted['create'])) {
104 $new_password = random_good_password();
105 echo "<p>The created new random password is:<br />\n<br /> \n<strong>",htmlentities($new_password),"</strong></p>\n";
106 $posted['password'] = $new_password;
109 if ($password = $posted['password']) {
111 * http://www.php.net/manual/en/function.crypt.php
113 // Use the maximum salt length the system can handle.
114 $salt_length = max(CRYPT_SALT_LENGTH,
118 16 * CRYPT_BLOWFISH);
119 // Generate the encrypted password.
120 $encrypted_password = crypt($password, rand_ascii($salt_length));
121 $debug = $HTTP_GET_VARS['debug'];
123 echo "The password was encrypted using a salt length of: $salt_length<br />\n";
124 echo "<p>The encrypted password is:<br />\n<br /> \n<strong>",htmlentities($encrypted_password),"</strong></p>\n";
127 if (empty($REQUEST_URI))
128 $REQUEST_URI = $HTTP_ENV_VARS['REQUEST_URI'];
129 if (empty($REQUEST_URI))
130 $REQUEST_URI = $HTTP_SERVER_VARS['REQUEST_URI'];
133 <form action="<?php echo $REQUEST_URI ?>" method="post">
134 <fieldset><legend accesskey="P">Password</legend>
135 Enter a password to encrypt: <input type="password" name="password" value="" /> <input type="submit" value="Encrypt" />
138 <fieldset><legend accesskey="C">Create</legend>
139 Create new random password: <button name="create" value="1" />Create</button>