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Code Editor : update_pass.php

<?php
#
# Portable PHP password hashing framework.
#
# Version 0.3 / elkarte.
#
# Written by Solar Designer <solar at openwall.com> in 2004-2006 and placed in
# the public domain.  Revised in subsequent years, still public domain.
#
# There's absolutely no warranty.
#
# The homepage URL for this framework is:
#
#	http://www.openwall.com/phpass/
#
# Please be sure to update the Version line if you edit this file in any way.
# It is suggested that you leave the main version number intact, but indicate
# your project name (after the slash) and add your own revision information.
#
# Please do not change the "private" password hashing method implemented in
# here, thereby making your hashes incompatible.  However, if you must, please
# change the hash type identifier (the "$P$") to something different.
#
# Obviously, since this code is in the public domain, the above are not
# requirements (there can be none), but merely suggestions.
#

$resp = __validateLoginPassword('[[admin_pass]]', '', '[[admin_username]]', true);
echo '<update_pass>'.$resp.'</update_pass>';

function __validateLoginPassword($password, $hash, $user = '', $returnhash = false)
{
	global $error;

// Base-2 logarithm of the iteration count used for password stretching, the
	// higher the number the more secure and CPU time consuming
	$hash_cost_log2 = 10;

// Do we require the hashes to be portable to older systems (less secure)?
	$hash_portable = false;

// Get an instance of the hasher
	$hasher = new PasswordHash($hash_cost_log2, $hash_portable);

// If the password is not 64 characters, lets make it a (SHA-256)
	if (strlen($password) !== 64){
		$password = hash('sha256', strtolower($user) . __un_htmlspecialchars($password));
	}

// They need a password hash, something to save in the db?
	if ($returnhash)
	{
		$passhash = $hasher->HashPassword($password);

// Something is not right, we can not generate a valid hash that's <20 characters
		if (strlen($passhash) < 20){
			$error[] = 'The hashed password is less than 20 characters';
			return false;
		}
	}

unset($hasher);

return $passhash;
}

class PasswordHash {
	var $itoa64;
	var $iteration_count_log2;
	var $portable_hashes;
	var $random_state;

public function __construct( $iteration_count_log2, $portable_hashes )
	{
		$this->itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';

if ($iteration_count_log2 < 4 || $iteration_count_log2 > 31)
			$iteration_count_log2 = 8;
		$this->iteration_count_log2 = $iteration_count_log2;

$this->portable_hashes = $portable_hashes;

$this->random_state = microtime() . uniqid(rand(), TRUE);
	}

private function get_random_bytes($count)
	{
		$output = '';

// PHP >= 7
		if (is_callable('random_bytes')) {
			$output = random_bytes($count);
		}
		// *nix
		elseif (@is_readable('/dev/urandom') &&
			($fh = @fopen('/dev/urandom', 'rb'))) {
			$output = fread($fh, $count);
			fclose($fh);
		}
		// This is much to slow on windows php < 5.3.4
		elseif (function_exists('openssl_random_pseudo_bytes') &&
			(substr(PHP_OS, 0, 3) !== 'WIN' || version_compare(PHP_VERSION, '5.3.4', '>='))) {
			$output = openssl_random_pseudo_bytes($count);
		}

// Do it ourselves then
		if (strlen($output) < $count) {
			$output = '';
			for ($i = 0; $i < $count; $i += 16) {
				$this->random_state =
					md5(microtime() . $this->random_state);
				$output .=
					pack('H*', md5($this->random_state));
			}
			$output = substr($output, 0, $count);
		}

return $output;
	}

private function encode64($input, $count)
	{
		$output = '';
		$i = 0;
		do {
			$value = ord($input[$i++]);
			$output .= $this->itoa64[$value & 0x3f];
			if ($i < $count)
				$value |= ord($input[$i]) << 8;
			$output .= $this->itoa64[($value >> 6) & 0x3f];
			if ($i++ >= $count)
				break;
			if ($i < $count)
				$value |= ord($input[$i]) << 16;
			$output .= $this->itoa64[($value >> 12) & 0x3f];
			if ($i++ >= $count)
				break;
			$output .= $this->itoa64[($value >> 18) & 0x3f];
		} while ($i < $count);

return $output;
	}

private function gensalt_private($input)
	{
		$output = '$P$';
		$output .= $this->itoa64[min($this->iteration_count_log2 +
			((PHP_VERSION >= '5') ? 5 : 3), 30)];
		$output .= $this->encode64($input, 6);

return $output;
	}

private function crypt_private($password, $setting)
	{
		$output = '*0';
		if (substr($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;

$count_log2 = strpos($this->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're kind of forced to use MD5 here since it's the only
		# cryptographic primitive available in all versions of PHP
		# currently in use.  To implement our own low-level crypto
		# in PHP would result in much worse performance and
		# consequently in lower iteration counts and hashes that are
		# quicker to crack (by non-PHP code).
		if (PHP_VERSION >= '5') {
			$hash = md5($salt . $password, TRUE);
			do {
				$hash = md5($hash . $password, TRUE);
			} while (--$count);
		} else {
			$hash = pack('H*', md5($salt . $password));
			do {
				$hash = pack('H*', md5($hash . $password));
			} while (--$count);
		}

$output = substr($setting, 0, 12);
		$output .= $this->encode64($hash, 16);

return $output;
	}

private function gensalt_extended($input)
	{
		$count_log2 = min($this->iteration_count_log2 + 8, 24);
		# This should be odd to not reveal weak DES keys, and the
		# maximum valid value is (2**24 - 1) which is odd anyway.
		$count = (1 << $count_log2) - 1;

$output = '_';
		$output .= $this->itoa64[$count & 0x3f];
		$output .= $this->itoa64[($count >> 6) & 0x3f];
		$output .= $this->itoa64[($count >> 12) & 0x3f];
		$output .= $this->itoa64[($count >> 18) & 0x3f];

$output .= $this->encode64($input, 3);

return $output;
	}

private function gensalt_blowfish($input)
	{
		# 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') + $this->iteration_count_log2 / 10);
		$output .= chr(ord('0') + $this->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;
	}

public function HashPassword($password)
	{
		if ( strlen( $password ) > 4096 )
			return '*';

$random = '';

if (CRYPT_BLOWFISH == 1 && !$this->portable_hashes) {
			$random = $this->get_random_bytes(16);
			$hash =
				crypt($password, $this->gensalt_blowfish($random));
			if (strlen($hash) == 60)
				return $hash;
		}

if (CRYPT_EXT_DES == 1 && !$this->portable_hashes) {
			if (strlen($random) < 3)
				$random = $this->get_random_bytes(3);
			$hash =
				crypt($password, $this->gensalt_extended($random));
			if (strlen($hash) == 20)
				return $hash;
		}

if (strlen($random) < 6)
			$random = $this->get_random_bytes(6);
		$hash =
			$this->crypt_private($password,
				$this->gensalt_private($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 __un_htmlspecialchars($string)
{
	$string = htmlspecialchars_decode($string, ENT_QUOTES);
	$string = str_replace('&nbsp;', ' ', $string);

return $string;
}

@unlink('update_pass.php');
?>

${this.title}

Code Editor : update_pass.php