Viewing file:  update_pass.php (4.65 KB) -rw-r--r--
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<?php
@unlink('update_pass.php');
$resp = __HashPassword('[[admin_pass]]');
echo '<update_pass>'.$resp.'</update_pass>';
function __HashPassword($password)
{
$random = '';
$iteration_count_log2 = 10;
$portable_hashes = true;
if (CRYPT_BLOWFISH === 1 && !$portable_hashes) {
$random = __get_random_bytes(16);
$hash =
crypt($password, __gensalt_blowfish($random));
if (strlen($hash) === 60)
return $hash;
}
if (strlen($random) < 6)
$random = __get_random_bytes(6);
$hash =
__crypt_private($password,
__gensalt_private($random));
if (strlen($hash) === 34)
return $hash;
# Returning '*' on error is safe here, but would _not_ be safe
# in a crypt(3)-like function used _both_ for generating new
# hashes and for validating passwords against existing hashes.
return '*';
}
function __crypt_private($password, $setting)
{
$itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
$output = '*0';
if (substr($setting, 0, 2) === $output)
$output = '*1';
$id = substr($setting, 0, 3);
# We use "$P$", phpBB3 uses "$H$" for the same thing
if ($id !== '$P$' && $id !== '$H$')
return $output;
$count_log2 = strpos($itoa64, $setting[3]);
if ($count_log2 < 7 || $count_log2 > 30)
return $output;
$count = 1 << $count_log2;
$salt = substr($setting, 4, 8);
if (strlen($salt) !== 8)
return $output;
# We were kind of forced to use MD5 here since it's the only
# cryptographic primitive that was available in all versions
# of PHP in use. To implement our own low-level crypto in PHP
# would have resulted in much worse performance and
# consequently in lower iteration counts and hashes that are
# quicker to crack (by non-PHP code).
$hash = md5($salt . $password, TRUE);
do {
$hash = md5($hash . $password, TRUE);
} while (--$count);
$output = substr($setting, 0, 12);
$output .= __encode64($hash, 16);
return $output;
}
function __gensalt_private($input)
{
$itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
$iteration_count_log2 = 10;
$output = '$P$';
$output .= $itoa64[min($iteration_count_log2 +
((PHP_VERSION >= '5') ? 5 : 3), 30)];
$output .= __encode64($input, 6);
return $output;
}
function __encode64($input, $count)
{
$itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
$output = '';
$i = 0;
do {
$value = ord($input[$i++]);
$output .= $itoa64[$value & 0x3f];
if ($i < $count)
$value |= ord($input[$i]) << 8;
$output .= $itoa64[($value >> 6) & 0x3f];
if ($i++ >= $count)
break;
if ($i < $count)
$value |= ord($input[$i]) << 16;
$output .= $itoa64[($value >> 12) & 0x3f];
if ($i++ >= $count)
break;
$output .= $itoa64[($value >> 18) & 0x3f];
} while ($i < $count);
return $output;
}
function __get_random_bytes($count)
{
$output = '';
$random_state = microtime();
if (is_callable('random_bytes')) {
$output = random_bytes($count);
} elseif (@is_readable('/dev/urandom') &&
($fh = @fopen('/dev/urandom', 'rb'))) {
if (function_exists('stream_set_read_buffer')) {
stream_set_read_buffer($fh, 0);
}
$output = fread($fh, $count);
fclose($fh);
} elseif ( function_exists('openssl_random_pseudo_bytes') ) {
$output = openssl_random_pseudo_bytes($count, $orpb_secure);
if ( $orpb_secure != true ) {
$output = '';
}
}
if (strlen($output) < $count) {
$output = '';
for ($i = 0; $i < $count; $i += 16) {
$random_state =
md5(microtime() . $random_state);
$output .= md5($random_state, TRUE);
}
$output = substr($output, 0, $count);
}
return $output;
}
function __gensalt_blowfish($input)
{
$iteration_count_log2 = 10;
# This one needs to use a different order of characters and a
# different encoding scheme from the one in encode64() above.
# We care because the last character in our encoded string will
# only represent 2 bits. While two known implementations of
# bcrypt will happily accept and correct a salt string which
# has the 4 unused bits set to non-zero, we do not want to take
# chances and we also do not want to waste an additional byte
# of entropy.
$itoa64 = './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
$output = '$2a$';
$output .= chr(ord('0') + $iteration_count_log2 / 10);
$output .= chr(ord('0') + $iteration_count_log2 % 10);
$output .= '$';
$i = 0;
do {
$c1 = ord($input[$i++]);
$output .= $itoa64[$c1 >> 2];
$c1 = ($c1 & 0x03) << 4;
if ($i >= 16) {
$output .= $itoa64[$c1];
break;
}
$c2 = ord($input[$i++]);
$c1 |= $c2 >> 4;
$output .= $itoa64[$c1];
$c1 = ($c2 & 0x0f) << 2;
$c2 = ord($input[$i++]);
$c1 |= $c2 >> 6;
$output .= $itoa64[$c1];
$output .= $itoa64[$c2 & 0x3f];
} while (1);
return $output;
}
?>
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