1
|
<?php
|
2
|
/**
|
3
|
* Portable PHP password hashing framework.
|
4
|
*
|
5
|
* Version 0.4 / WebsiteBaker Rev. 0.1
|
6
|
* WB changes: added SHA-256, SHA-512 (2012/10/27 DarkViper)
|
7
|
*
|
8
|
* Written by Solar Designer <solar at openwall.com> in 2004-2006 and placed in
|
9
|
* the public domain. Revised in subsequent years, still public domain.
|
10
|
*
|
11
|
* There's absolutely no warranty.
|
12
|
*
|
13
|
* The homepage URL for this framework is:
|
14
|
*
|
15
|
* http://www.openwall.com/phpass/
|
16
|
*
|
17
|
* Please be sure to update the Version line if you edit this file in any way.
|
18
|
* It is suggested that you leave the main version number intact, but indicate
|
19
|
* your project name (after the slash) and add your own revision information.
|
20
|
*
|
21
|
* Please do not change the "private" password hashing method implemented in
|
22
|
* here, thereby making your hashes incompatible. However, if you must, please
|
23
|
* change the hash type identifier (the "$P$") to something different.
|
24
|
*
|
25
|
* Obviously, since this code is in the public domain, the above are not
|
26
|
* requirements (there can be none), but merely suggestions.
|
27
|
*/
|
28
|
|
29
|
class PasswordHash implements PasswordHashInterface {
|
30
|
protected $itoa64;
|
31
|
protected $itoa64BlowFish;
|
32
|
protected $random_state;
|
33
|
|
34
|
public $iteration_count_log2;
|
35
|
public $portable_hashes;
|
36
|
|
37
|
public function __construct($iteration_count_log2, $portable_hashes)
|
38
|
{
|
39
|
$this->itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
|
40
|
$this->itoa64BlowFish = './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
|
41
|
|
42
|
if ($iteration_count_log2 < 4 || $iteration_count_log2 > 31) {
|
43
|
$iteration_count_log2 = 8;
|
44
|
}
|
45
|
$this->iteration_count_log2 = $iteration_count_log2;
|
46
|
$this->portable_hashes = $portable_hashes;
|
47
|
$this->random_state = microtime();
|
48
|
if (function_exists('getmypid')) {
|
49
|
$this->random_state .= getmypid();
|
50
|
}
|
51
|
}
|
52
|
/** Begin inserted function for WebsiteBaker by M.v.d.Decken **/
|
53
|
/**
|
54
|
* Interface compatibility methode to set values
|
55
|
* @param int $iIterations number of iterations
|
56
|
* @param bool $bHashType type of encoding
|
57
|
*/
|
58
|
public function setParams($iIterations, $bHashType){
|
59
|
$this->iteration_count_log2 = $iIterations;
|
60
|
$this->portable_hashes = $bHashType;
|
61
|
}
|
62
|
/** End inserted function for WebsiteBaker by M.v.d.Decken **/
|
63
|
|
64
|
private function get_random_bytes($count)
|
65
|
{
|
66
|
$output = '';
|
67
|
if (@is_readable('/dev/urandom') &&
|
68
|
($fh = @fopen('/dev/urandom', 'rb'))) {
|
69
|
$output = fread($fh, $count);
|
70
|
fclose($fh);
|
71
|
}
|
72
|
if (strlen($output) < $count) {
|
73
|
$output = '';
|
74
|
for ($i = 0; $i < $count; $i += 16) {
|
75
|
$this->random_state = md5(microtime() . $this->random_state);
|
76
|
$output .= pack('H*', md5($this->random_state));
|
77
|
}
|
78
|
$output = substr($output, 0, $count);
|
79
|
}
|
80
|
return $output;
|
81
|
}
|
82
|
|
83
|
private function encode64($input, $count)
|
84
|
{
|
85
|
$output = '';
|
86
|
$i = 0;
|
87
|
do {
|
88
|
$value = ord($input[$i++]);
|
89
|
$output .= $this->itoa64[$value & 0x3f];
|
90
|
if ($i < $count) { $value |= ord($input[$i]) << 8; }
|
91
|
$output .= $this->itoa64[($value >> 6) & 0x3f];
|
92
|
if ($i++ >= $count) { break; }
|
93
|
if ($i < $count) { $value |= ord($input[$i]) << 16; }
|
94
|
$output .= $this->itoa64[($value >> 12) & 0x3f];
|
95
|
if ($i++ >= $count) { break; }
|
96
|
$output .= $this->itoa64[($value >> 18) & 0x3f];
|
97
|
} while ($i < $count);
|
98
|
|
99
|
return $output;
|
100
|
}
|
101
|
|
102
|
private function gensalt_private($input)
|
103
|
{
|
104
|
$output = '$P$';
|
105
|
$output .= $this->itoa64[min($this->iteration_count_log2 +
|
106
|
((PHP_VERSION >= '5') ? 5 : 3), 30)];
|
107
|
$output .= $this->encode64($input, 6);
|
108
|
return $output;
|
109
|
}
|
110
|
|
111
|
private function crypt_private($password, $setting)
|
112
|
{
|
113
|
$output = '*0';
|
114
|
if (substr($setting, 0, 2) == $output) { $output = '*1'; }
|
115
|
$id = substr($setting, 0, 3);
|
116
|
# We use "$P$", phpBB3 uses "$H$" for the same thing
|
117
|
if ($id != '$P$' && $id != '$H$') { return $output; }
|
118
|
$count_log2 = strpos($this->itoa64, $setting[3]);
|
119
|
if ($count_log2 < 7 || $count_log2 > 30) { return $output; }
|
120
|
$count = 1 << $count_log2;
|
121
|
$salt = substr($setting, 4, 8);
|
122
|
if (strlen($salt) != 8) { return $output; }
|
123
|
|
124
|
# We're kind of forced to use MD5 here since it's the only
|
125
|
# cryptographic primitive available in all versions of PHP
|
126
|
# currently in use. To implement our own low-level crypto
|
127
|
# in PHP would result in much worse performance and
|
128
|
# consequently in lower iteration counts and hashes that are
|
129
|
# quicker to crack (by non-PHP code).
|
130
|
if (PHP_VERSION >= '5') {
|
131
|
$hash = md5($salt . $password, TRUE);
|
132
|
do {
|
133
|
$hash = md5($hash . $password, TRUE);
|
134
|
} while (--$count);
|
135
|
} else {
|
136
|
$hash = pack('H*', md5($salt . $password));
|
137
|
do {
|
138
|
$hash = pack('H*', md5($hash . $password));
|
139
|
} while (--$count);
|
140
|
}
|
141
|
$output = substr($setting, 0, 12);
|
142
|
$output .= $this->encode64($hash, 16);
|
143
|
return $output;
|
144
|
}
|
145
|
|
146
|
private function gensalt_extended($input)
|
147
|
{
|
148
|
$count_log2 = min($this->iteration_count_log2 + 8, 24);
|
149
|
# This should be odd to not reveal weak DES keys, and the
|
150
|
# maximum valid value is (2**24 - 1) which is odd anyway.
|
151
|
$count = (1 << $count_log2) - 1;
|
152
|
$output = '_';
|
153
|
$output .= $this->itoa64[$count & 0x3f];
|
154
|
$output .= $this->itoa64[($count >> 6) & 0x3f];
|
155
|
$output .= $this->itoa64[($count >> 12) & 0x3f];
|
156
|
$output .= $this->itoa64[($count >> 18) & 0x3f];
|
157
|
$output .= $this->encode64($input, 3);
|
158
|
return $output;
|
159
|
}
|
160
|
/** Begin inserted function for WebsiteBaker by M.v.d.Decken **/
|
161
|
/**
|
162
|
*
|
163
|
* @param type $input
|
164
|
* @param type $sType
|
165
|
* @return type
|
166
|
*/
|
167
|
private function gensalt_sha($input, $sType = 'SHA512')
|
168
|
{
|
169
|
$iType = ($sType === 'SHA256' ? 5 : 6);
|
170
|
$iIterations = min(max(pow(2, $this->iteration_count_log2), 10000), 999999999);
|
171
|
$output = '$'.(string)$iType.'$rounds='.(string)$iIterations.'$';
|
172
|
$output .= $this->encode64($input, 16);
|
173
|
return $output;
|
174
|
}
|
175
|
/** End inserted function for WebsiteBaker by W.v.d.Decken **/
|
176
|
|
177
|
private function gensalt_blowfish($input)
|
178
|
{
|
179
|
# This one needs to use a different order of characters and a
|
180
|
# different encoding scheme from the one in encode64() above.
|
181
|
# We care because the last character in our encoded string will
|
182
|
# only represent 2 bits. While two known implementations of
|
183
|
# bcrypt will happily accept and correct a salt string which
|
184
|
# has the 4 unused bits set to non-zero, we do not want to take
|
185
|
# chances and we also do not want to waste an additional byte
|
186
|
# of entropy.
|
187
|
|
188
|
$output = '$2a$';
|
189
|
$output .= chr(ord('0') + $this->iteration_count_log2 / 10);
|
190
|
$output .= chr(ord('0') + $this->iteration_count_log2 % 10);
|
191
|
$output .= '$';
|
192
|
$i = 0;
|
193
|
do {
|
194
|
$c1 = ord($input[$i++]);
|
195
|
$output .= $this->itoa64BlowFish[$c1 >> 2];
|
196
|
$c1 = ($c1 & 0x03) << 4;
|
197
|
if ($i >= 16) {
|
198
|
$output .= $this->itoa64BlowFish[$c1];
|
199
|
break;
|
200
|
}
|
201
|
$c2 = ord($input[$i++]);
|
202
|
$c1 |= $c2 >> 4;
|
203
|
$output .= $this->itoa64BlowFish[$c1];
|
204
|
$c1 = ($c2 & 0x0f) << 2;
|
205
|
$c2 = ord($input[$i++]);
|
206
|
$c1 |= $c2 >> 6;
|
207
|
$output .= $this->itoa64BlowFish[$c1];
|
208
|
$output .= $this->itoa64BlowFish[$c2 & 0x3f];
|
209
|
} while (1);
|
210
|
return $output;
|
211
|
}
|
212
|
|
213
|
public function HashPassword($password)
|
214
|
{
|
215
|
$random = '';
|
216
|
|
217
|
/** Begin inserted function for WebsiteBaker by W.v.d.Decken **/
|
218
|
if (CRYPT_SHA512 == 1 && !$this->portable_hashes) {
|
219
|
$random = $this->get_random_bytes(16);
|
220
|
$hash = crypt($password, $this->gensalt_sha($random, 'SHA512'));
|
221
|
if (strlen(substr(strrchr($hash, 36), 1)) == 86) { return $hash; }
|
222
|
}
|
223
|
|
224
|
if (CRYPT_SHA256 == 1 && !$this->portable_hashes) {
|
225
|
$random = $this->get_random_bytes(16);
|
226
|
$hash = crypt($password, $this->gensalt_sha($random, 'SHA256'));
|
227
|
if (strlen(substr(strrchr($hash, 36), 1)) == 43) { return $hash; }
|
228
|
}
|
229
|
/** End inserted function for WebsiteBaker by W.v.d.Decken **/
|
230
|
|
231
|
if (CRYPT_BLOWFISH == 1 && !$this->portable_hashes) {
|
232
|
$random = $this->get_random_bytes(16);
|
233
|
$hash = crypt($password, $this->gensalt_blowfish($random));
|
234
|
if (strlen($hash) == 60) { return $hash; }
|
235
|
}
|
236
|
|
237
|
if (CRYPT_EXT_DES == 1 && !$this->portable_hashes) {
|
238
|
if (strlen($random) < 3) {
|
239
|
$random = $this->get_random_bytes(3);
|
240
|
}
|
241
|
$hash = crypt($password, $this->gensalt_extended($random));
|
242
|
if (strlen($hash) == 20) { return $hash; }
|
243
|
}
|
244
|
|
245
|
if (strlen($random) < 6) {
|
246
|
$random = $this->get_random_bytes(6);
|
247
|
}
|
248
|
$hash = $this->crypt_private($password, $this->gensalt_private($random));
|
249
|
if (strlen($hash) == 34) { return $hash; }
|
250
|
|
251
|
# Returning '*' on error is safe here, but would _not_ be safe
|
252
|
# in a crypt(3)-like function used _both_ for generating new
|
253
|
# hashes and for validating passwords against existing hashes.
|
254
|
return '*';
|
255
|
}
|
256
|
|
257
|
public function CheckPassword($password, $stored_hash)
|
258
|
{
|
259
|
$hash = $this->crypt_private($password, $stored_hash);
|
260
|
if ($hash[0] == '*') {
|
261
|
$hash = crypt($password, $stored_hash);
|
262
|
}
|
263
|
return $hash == $stored_hash;
|
264
|
}
|
265
|
}
|
266
|
|