*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
- * PHP versions 4 and 5
+ * PHP version 5
*
* Useful resources are as follows:
*
* Here's a short example of how to use this library:
* <code>
* <?php
- * include 'Crypt/Blowfish.php';
+ * include 'vendor/autoload.php';
*
- * $blowfish = new Crypt_Blowfish();
+ * $blowfish = new \phpseclib\Crypt\Blowfish();
*
* $blowfish->setKey('12345678901234567890123456789012');
*
* ?>
* </code>
*
- * LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
* @category Crypt
- * @package Crypt_Blowfish
+ * @package Blowfish
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
* @copyright 2007 Jim Wigginton
* @link http://phpseclib.sourceforge.net
*/
-/**
- * Include Crypt_Base
- *
- * Base cipher class
- */
-if (!class_exists('Crypt_Base')) {
- include_once 'Base.php';
-}
-
-/**#@+
- * @access public
- * @see Crypt_Blowfish::encrypt()
- * @see Crypt_Blowfish::decrypt()
- */
-/**
- * Encrypt / decrypt using the Counter mode.
- *
- * Set to -1 since that's what Crypt/Random.php uses to index the CTR mode.
- *
- * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Counter_.28CTR.29
- */
-define('CRYPT_BLOWFISH_MODE_CTR', CRYPT_MODE_CTR);
-/**
- * Encrypt / decrypt using the Electronic Code Book mode.
- *
- * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
- */
-define('CRYPT_BLOWFISH_MODE_ECB', CRYPT_MODE_ECB);
-/**
- * Encrypt / decrypt using the Code Book Chaining mode.
- *
- * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
- */
-define('CRYPT_BLOWFISH_MODE_CBC', CRYPT_MODE_CBC);
-/**
- * Encrypt / decrypt using the Cipher Feedback mode.
- *
- * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
- */
-define('CRYPT_BLOWFISH_MODE_CFB', CRYPT_MODE_CFB);
-/**
- * Encrypt / decrypt using the Cipher Feedback mode.
- *
- * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
- */
-define('CRYPT_BLOWFISH_MODE_OFB', CRYPT_MODE_OFB);
-/**#@-*/
-
-/**#@+
- * @access private
- * @see Crypt_Base::Crypt_Base()
- */
-/**
- * Toggles the internal implementation
- */
-define('CRYPT_BLOWFISH_MODE_INTERNAL', CRYPT_MODE_INTERNAL);
-/**
- * Toggles the mcrypt implementation
- */
-define('CRYPT_BLOWFISH_MODE_MCRYPT', CRYPT_MODE_MCRYPT);
-/**#@-*/
+namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of Blowfish.
*
- * @package Crypt_Blowfish
+ * @package Blowfish
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
* @access public
*/
-class Crypt_Blowfish extends Crypt_Base
+class Blowfish extends Base
{
/**
* Block Length of the cipher
*
- * @see Crypt_Base::block_size
- * @var Integer
+ * @see \phpseclib\Crypt\Base::block_size
+ * @var int
* @access private
*/
var $block_size = 8;
- /**
- * The default password key_size used by setPassword()
- *
- * @see Crypt_Base::password_key_size
- * @see Crypt_Base::setPassword()
- * @var Integer
- * @access private
- */
- var $password_key_size = 56;
-
- /**
- * The namespace used by the cipher for its constants.
- *
- * @see Crypt_Base::const_namespace
- * @var String
- * @access private
- */
- var $const_namespace = 'BLOWFISH';
-
/**
* The mcrypt specific name of the cipher
*
- * @see Crypt_Base::cipher_name_mcrypt
- * @var String
+ * @see \phpseclib\Crypt\Base::cipher_name_mcrypt
+ * @var string
* @access private
*/
var $cipher_name_mcrypt = 'blowfish';
/**
* Optimizing value while CFB-encrypting
*
- * @see Crypt_Base::cfb_init_len
- * @var Integer
+ * @see \phpseclib\Crypt\Base::cfb_init_len
+ * @var int
* @access private
*/
var $cfb_init_len = 500;
/**
* The fixed subkeys boxes ($sbox0 - $sbox3) with 256 entries each
*
- * S-Box 1
+ * S-Box 0
*
* @access private
* @var array
*/
- var $sbox0 = array (
+ var $sbox0 = array(
0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
/**
* P-Array consists of 18 32-bit subkeys
*
- * @var array $parray
+ * @var array
* @access private
*/
var $parray = array(
*
* Holds the expanded key [p] and the key-depended s-boxes [sb]
*
- * @var array $bctx
+ * @var array
* @access private
*/
var $bctx;
/**
* Holds the last used key
*
- * @var Array
+ * @var array
* @access private
*/
var $kl;
/**
- * Sets the key.
+ * The Key Length (in bytes)
*
- * Keys can be of any length. Blowfish, itself, requires the use of a key between 32 and max. 448-bits long.
- * If the key is less than 32-bits we NOT fill the key to 32bit but let the key as it is to be compatible
- * with mcrypt because mcrypt act this way with blowfish key's < 32 bits.
- *
- * If the key is more than 448-bits, we trim the excess bits.
+ * @see \phpseclib\Crypt\Base::setKeyLength()
+ * @var int
+ * @access private
+ * @internal The max value is 256 / 8 = 32, the min value is 128 / 8 = 16. Exists in conjunction with $Nk
+ * because the encryption / decryption / key schedule creation requires this number and not $key_length. We could
+ * derive this from $key_length or vice versa, but that'd mean we'd have to do multiple shift operations, so in lieu
+ * of that, we'll just precompute it once.
+ */
+ var $key_length = 16;
+
+ /**
+ * Sets the key length.
*
- * If the key is not explicitly set, or empty, it'll be assumed a 128 bits key to be all null bytes.
+ * Key lengths can be between 32 and 448 bits.
*
* @access public
- * @see Crypt_Base::setKey()
- * @param String $key
+ * @param int $length
*/
- function setKey($key)
+ function setKeyLength($length)
{
- $keylength = strlen($key);
+ if ($length < 32) {
+ $this->key_length = 7;
+ } elseif ($length > 448) {
+ $this->key_length = 56;
+ } else {
+ $this->key_length = $length >> 3;
+ }
- if (!$keylength) {
- $key = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
- } elseif ($keylength > 56) {
- $key = substr($key, 0, 56);
+ parent::setKeyLength($length);
+ }
+
+ /**
+ * Test for engine validity
+ *
+ * This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
+ *
+ * @see \phpseclib\Crypt\Base::isValidEngine()
+ * @param int $engine
+ * @access public
+ * @return bool
+ */
+ function isValidEngine($engine)
+ {
+ if ($engine == self::ENGINE_OPENSSL) {
+ if ($this->key_length != 16) {
+ return false;
+ }
+ $this->cipher_name_openssl_ecb = 'bf-ecb';
+ $this->cipher_name_openssl = 'bf-' . $this->_openssl_translate_mode();
}
- parent::setKey($key);
+ return parent::isValidEngine($engine);
}
/**
* Setup the key (expansion)
*
- * @see Crypt_Base::_setupKey()
+ * @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
* Encrypts a block
*
* @access private
- * @param String $in
- * @return String
+ * @param string $in
+ * @return string
*/
function _encryptBlock($in)
{
$r = $in[2];
for ($i = 0; $i < 16; $i+= 2) {
- $l^= $p[$i];
- $r^= ($sb_0[$l >> 24 & 0xff] +
- $sb_1[$l >> 16 & 0xff] ^
- $sb_2[$l >> 8 & 0xff]) +
- $sb_3[$l & 0xff];
-
- $r^= $p[$i + 1];
- $l^= ($sb_0[$r >> 24 & 0xff] +
- $sb_1[$r >> 16 & 0xff] ^
- $sb_2[$r >> 8 & 0xff]) +
- $sb_3[$r & 0xff];
+ $l^= $p[$i];
+ $r^= ($sb_0[$l >> 24 & 0xff] +
+ $sb_1[$l >> 16 & 0xff] ^
+ $sb_2[$l >> 8 & 0xff]) +
+ $sb_3[$l & 0xff];
+
+ $r^= $p[$i + 1];
+ $l^= ($sb_0[$r >> 24 & 0xff] +
+ $sb_1[$r >> 16 & 0xff] ^
+ $sb_2[$r >> 8 & 0xff]) +
+ $sb_3[$r & 0xff];
}
return pack("N*", $r ^ $p[17], $l ^ $p[16]);
}
* Decrypts a block
*
* @access private
- * @param String $in
- * @return String
+ * @param string $in
+ * @return string
*/
function _decryptBlock($in)
{
$sb_2[$r >> 8 & 0xff]) +
$sb_3[$r & 0xff];
}
-
return pack("N*", $r ^ $p[0], $l ^ $p[1]);
}
/**
* Setup the performance-optimized function for de/encrypt()
*
- * @see Crypt_Base::_setupInlineCrypt()
+ * @see \phpseclib\Crypt\Base::_setupInlineCrypt()
* @access private
*/
function _setupInlineCrypt()
{
- $lambda_functions =& Crypt_Blowfish::_getLambdaFunctions();
+ $lambda_functions =& self::_getLambdaFunctions();
// We create max. 10 hi-optimized code for memory reason. Means: For each $key one ultra fast inline-crypt function.
+ // (Currently, for Blowfish, one generated $lambda_function cost on php5.5@32bit ~100kb unfreeable mem and ~180kb on php5.5@64bit)
// After that, we'll still create very fast optimized code but not the hi-ultimative code, for each $mode one.
- $gen_hi_opt_code = (bool)( count($lambda_functions) < 10);
-
- switch (true) {
- case $gen_hi_opt_code:
- $code_hash = md5(str_pad("Crypt_Blowfish, {$this->mode}, ", 32, "\0") . $this->key);
- break;
- default:
- $code_hash = "Crypt_Blowfish, {$this->mode}";
+ $gen_hi_opt_code = (bool)(count($lambda_functions) < 10);
+
+ // Generation of a unique hash for our generated code
+ $code_hash = "Crypt_Blowfish, {$this->mode}";
+ if ($gen_hi_opt_code) {
+ $code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key);
}
if (!isset($lambda_functions[$code_hash])) {
https://reisub.nsupdate.info/git / friendica-addons.git / .git / blobdiff