diff --git a/include/class.crypto.php b/include/class.crypto.php
new file mode 100644
index 0000000000000000000000000000000000000000..10974b223b0f7b15093bef822795922724f206ee
--- /dev/null
+++ b/include/class.crypto.php
@@ -0,0 +1,356 @@
+<?php
+/*********************************************************************
+ class.crypto.php
+
+ Crypto wrapper - implements tag based encryption/descryption
+
+ Peter Rotich <peter@osticket.com>
+ Copyright (c) 2006-2013 osTicket
+ http://www.osticket.com
+
+ Credit:
+ https://defuse.ca/secure-php-encryption.htm
+ Interwebz
+
+ Released under the GNU General Public License WITHOUT ANY WARRANTY.
+ See LICENSE.TXT for details.
+
+ vim: expandtab sw=4 ts=4 sts=4:
+**********************************************************************/
+
+//Top level encryption options.
+define('CRYPT_MCRYPT', 1);
+define('CRYPT_OPENSSL', 2);
+define('CRYPT_PHPSECLIB', 3);
+
+require_once PEAR_DIR.'Crypt/Hash.php';
+require_once PEAR_DIR.'Crypt/Random.php';
+
+class Crypto {
+
+
+ function encrypt($input, $key, $skey='encryption', $crypt=null) {
+
+ //Gets preffered crypto.
+ if(!($crypto = Crypto::get($crypt)))
+ return false;
+
+ //Set master and subkeys
+ $crypto->setKeys($key, $skey);
+
+ if(!($ciphertext=$crypto->encrypt($input)))
+ return false;
+
+ return sprintf('$%d$%s', $crypto->getTagNumber(), $ciphertext);
+ }
+
+ function decrypt($ciphertext, $key, $skey='encryption') {
+
+ if(!preg_match('/^\\$(\d)\\$(.*)/', $ciphertext, $result))
+ return false;
+
+ $crypt = $result[1]; //Crypt used..
+ $ciphertext = $result[2]; //encrypted input.
+
+ //Get crypto.... based on the tag.
+ if(!($crypto=Crypto::get($crypt)) || !$crypto->exists())
+ return false;
+
+ $crypto->setKeys($key, $skey);
+
+ return $crypto->decrypt($ciphertext);
+ }
+
+ function get($crypt) {
+
+ $cryptos = self::cryptos();
+ if(!$cryptos || ($crypt && !isset($cryptos[$crypt])))
+ return null;
+
+ //Requested crypto available??
+ if($crypt && $cryptos[$crypt])
+ return $cryptos[$crypt];
+
+ //cycle thro' available cryptos
+ foreach($cryptos as $crypto) {
+ if(is_callable(array($crypto, 'exists'))
+ && call_user_func(array($crypto, 'exists')))
+ return $crypto;
+ }
+
+ return null;
+ }
+
+ function cryptos() {
+
+ //list of available && supported cryptos
+ $cryptos = array();
+ if(defined('CRYPT_MCRYPT') && class_exists('CryptoMcrypt'))
+ $cryptos[CRYPT_MCRYPT] = new CryptoMcrypt(CRYPT_MCRYPT);
+
+ if(defined('CRYPT_OPENSSL') && class_exists('CryptoOpenSSL'))
+ $cryptos[CRYPT_OPENSSL] = new CryptoOpenSSL(CRYPT_OPENSSL);
+
+ if(defined('CRYPT_PHPSECLIB') && class_exists('CryptoPHPSecLib'))
+ $cryptos[CRYPT_PHPSECLIB] = new CryptoPHPSecLib(CRYPT_PHPSECLIB);
+
+ //var_dump($cryptos);
+
+ return $cryptos;
+ }
+
+ /* Hash string - sha1 is used by default */
+ function hash($string, $key) {
+ $hash = new Crypt_Hash();
+ $hash->setKey($key);
+ return base64_encode($hash->hash($string));
+ }
+
+ /* Generates random string of @len length */
+ function randcode($len) {
+ return crypt_random_string($len);
+ }
+}
+
+class CryptoAlgo {
+
+ var $master_key;
+ var $sub_key;
+
+ var $tag_number;
+
+ function CryptoAlgo($tag) {
+ $this->tag_number = $tag;
+ }
+
+ function getTagNumber() {
+ return $this->tag_number;
+ }
+
+ function getMasterKey() {
+ return $this->master_key;
+ }
+
+ function getSubKey() {
+ return $this->sub_key;
+ }
+
+ function setKeys($master, $sub) {
+ $this->master_key = $master;
+ $this->sub_key = $sub;
+ }
+
+ function getKeyHash($seed) {
+
+ $hash = Crypto::hash($this->getMasterKey().md5($this->getSubKey()), $seed);
+ return $seed? substr($hash, 0, strlen($seed)) : $hash;
+ }
+}
+
+define('CRYPTO_CIPHER_MCRYPT_RIJNDAEL_128', 1);
+
+Class CryptoMcrypt extends CryptoAlgo {
+
+ var $ciphers = array(
+ CRYPTO_CIPHER_MCRYPT_RIJNDAEL_128 => array(
+ 'name' => MCRYPT_RIJNDAEL_128,
+ 'mode' => 'cbc',
+ ),
+ );
+
+ function getCipher($id) {
+
+ return ($id && isset($this->ciphers[$id]))
+ ? $this->ciphers[$id] : null;
+ }
+
+ function encrypt($text, $cid=CRYPTO_CIPHER_MCRYPT_RIJNDAEL_128) {
+
+ if(!$this->exists() || !$text || !($cipher=$this->getCipher($cid)))
+ return false;
+
+ $td = mcrypt_module_open($cipher['name'], '', $cipher['mode'], '');
+ $keysize = mcrypt_enc_get_key_size($td);
+ $ivsize = mcrypt_enc_get_iv_size($td);
+ $iv = mcrypt_create_iv($ivsize, MCRYPT_DEV_RANDOM); //XXX: Windows??
+
+ //Add padding
+ $blocksize = mcrypt_enc_get_block_size($td);
+ $pad = $blocksize - (strlen($text) % $blocksize);
+ $text .= str_repeat(chr($pad), $pad);
+
+ // Do the encryption.
+ mcrypt_generic_init($td, $this->getKeyHash($iv), $iv);
+ $ciphertext = $iv . mcrypt_generic($td, $text);
+ mcrypt_generic_deinit($td);
+ mcrypt_module_close($td);
+
+ return sprintf('$%s$%s', $cid, $ciphertext);
+ }
+
+ function decrypt($ciphertext) {
+
+ if(!$this->exists() || !$ciphertext)
+ return false;
+
+ if(!preg_match('/^\\$(\d)\\$(.*)/', $ciphertext, $result)
+ || !($cipher=$this->getCipher($result[1])))
+ return false;
+
+ $ciphertext = $result[2];
+
+ $td = mcrypt_module_open($cipher['name'], '', $cipher['mode'], '');
+ $keysize = mcrypt_enc_get_key_size($td);
+ $ivsize = mcrypt_enc_get_iv_size($td);
+
+ if(strlen($ciphertext) <= $ivsize)
+ return false;
+
+ $iv = substr($ciphertext, 0, $ivsize);
+ $ciphertext = substr($ciphertext, $ivsize);
+
+ // Do the decryption.
+ mcrypt_generic_init($td, $this->getKeyHash($iv), $iv);
+ $plaintext = mdecrypt_generic($td, $ciphertext);
+ mcrypt_generic_deinit($td);
+ mcrypt_module_close($td);
+
+ // Remove the padding.
+ $pad = ord($plaintext[strlen($plaintext) -1]);
+ $plaintext = substr($plaintext, 0, strlen($plaintext) - $pad);
+
+ return $plaintext;
+ }
+
+ function exists() {
+ return extension_loaded('mcrypt');
+ }
+}
+
+define('CRYPTO_CIPHER_OPENSSL_AES_128_CBC', 1);
+
+class CryptoOpenSSL extends CryptoAlgo {
+
+ var $ciphers = array(
+ CRYPTO_CIPHER_OPENSSL_AES_128_CBC => array(
+ 'method' => 'aes-128-cbc',
+ ),
+ );
+
+ function getMethod($cid) {
+ return ($cid && isset($this->ciphers[$cid])) ?
+ $this->ciphers[$cid]['method'] : null;
+ }
+
+ function encrypt($text, $cid=CRYPTO_CIPHER_OPENSSL_AES_128_CBC) {
+
+ if(!$this->exists() || !$text || !($method=$this->getMethod($cid)))
+ return false;
+
+ $ivlen = openssl_cipher_iv_length($method);
+ $iv = openssl_random_pseudo_bytes($ivlen);
+
+ if(!($ciphertext = openssl_encrypt($text, $method,
+ $this->getKeyHash($iv), 0, $iv)))
+ return false;
+
+ return sprintf('$%s$%s%s', $cid, $iv, $ciphertext);
+ }
+
+ function decrypt($ciphertext) {
+
+
+ if(!$this->exists() || !$ciphertext)
+ return false;
+
+ if(!preg_match('/^\\$(\d)\\$(.*)/', $ciphertext, $result)
+ ||
+ !($method=$this->getMethod($result[1])))
+ return false;
+
+ $ciphertext = $result[2];
+
+ $ivlen = openssl_cipher_iv_length($method);
+ $iv = substr($ciphertext, 0, $ivlen);
+ $ciphertext = substr($ciphertext, $ivlen);
+
+ $plaintext = openssl_decrypt($ciphertext, $method,
+ $this->getKeyHash($iv), 0, $iv);
+
+ return $plaintext;
+ }
+
+ function exists() {
+ return extension_loaded('openssl');
+ }
+}
+
+
+require_once PEAR_DIR.'Crypt/AES.php';
+define('CRYPTO_CIPHER_PHPSECLIB_AES_CBC', 1);
+
+class CryptoPHPSecLib extends CryptoAlgo {
+ var $ciphers = array(
+ CRYPTO_CIPHER_PHPSECLIB_AES_CBC => array(
+ 'mode' => CRYPT_AES_MODE_CBC,
+ 'ivlen' => 16,
+ ),
+ );
+
+ function getCrypto($cid) {
+
+ if(!$cid || !isset($this->ciphers[$cid])
+ || !($cipher=$this->ciphers[$cid]))
+ return false;
+
+ $crypto = null;
+ switch($cid) {
+ case CRYPTO_CIPHER_PHPSECLIB_AES_CBC:
+ $crypto = new Crypt_AES($cipher['mode']);
+ break;
+ }
+
+ return $crypto;
+ }
+
+ function getIVLen($cid) {
+ return ($cid && !isset($this->ciphers[$cid]['ivlen'])) ?
+ $this->ciphers[$cid]['ivlen'] : 16;
+ }
+
+ function encrypt($text, $cid=CRYPTO_CIPHER_PHPSECLIB_AES_CBC) {
+
+ if(!$this->exists() || !$text || !($crypto=$this->getCrypto($cid)))
+ return false;
+
+ $iv = Crypto::randcode($this->getIVLen($cid));
+ $crypto->setKey($this->getKeyHash($iv));
+ $crypto->setIV($iv);
+
+ return sprintf('$%s$%s%s', $cid, $iv, $crypto->encrypt($text));
+ }
+
+ function decrypt($ciphertext) {
+
+ if(!$this->exists() || !$ciphertext)
+ return false;
+
+ if(!preg_match('/^\\$(\d)\\$(.*)/', $ciphertext, $result)
+ || !($crypto=$this->getCrypto($result[1])))
+ return false;
+
+ $ciphertext = $result[2];
+ $ivlen = $this->getIVLen($result[1]);
+ $iv = substr($result[2], 0, $ivlen);
+ $ciphertext = substr($result[2], $ivlen);
+ $crypto->setKey($this->getKeyHash($iv));
+ $crypto->setIV($iv);
+
+ return $crypto->decrypt($ciphertext);
+ }
+
+ function exists() {
+ return class_exists('Crypt_AES');
+ }
+}
+?>
diff --git a/include/pear/Crypt/AES.php b/include/pear/Crypt/AES.php
new file mode 100644
index 0000000000000000000000000000000000000000..84de2d9acf8223294c6ce0f1e5fea7e4748ab900
--- /dev/null
+++ b/include/pear/Crypt/AES.php
@@ -0,0 +1,540 @@
+<?php
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Pure-PHP implementation of AES.
+ *
+ * Uses mcrypt, if available, and an internal implementation, otherwise.
+ *
+ * PHP versions 4 and 5
+ *
+ * If {@link Crypt_AES::setKeyLength() setKeyLength()} isn't called, it'll be calculated from
+ * {@link Crypt_AES::setKey() setKey()}. ie. if the key is 128-bits, the key length will be 128-bits. If it's 136-bits
+ * it'll be null-padded to 160-bits and 160 bits will be the key length until {@link Crypt_Rijndael::setKey() setKey()}
+ * is called, again, at which point, it'll be recalculated.
+ *
+ * Since Crypt_AES extends Crypt_Rijndael, some functions are available to be called that, in the context of AES, don't
+ * make a whole lot of sense. {@link Crypt_AES::setBlockLength() setBlockLength()}, for instance. Calling that function,
+ * however possible, won't do anything (AES has a fixed block length whereas Rijndael has a variable one).
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ * include('Crypt/AES.php');
+ *
+ * $aes = new Crypt_AES();
+ *
+ * $aes->setKey('abcdefghijklmnop');
+ *
+ * $size = 10 * 1024;
+ * $plaintext = '';
+ * for ($i = 0; $i < $size; $i++) {
+ * $plaintext.= 'a';
+ * }
+ *
+ * echo $aes->decrypt($aes->encrypt($plaintext));
+ * ?>
+ * </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_AES
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @copyright MMVIII Jim Wigginton
+ * @license http://www.opensource.org/licenses/mit-license.html MIT License
+ * @link http://phpseclib.sourceforge.net
+ */
+
+/**
+ * Include Crypt_Rijndael
+ */
+if (!class_exists('Crypt_Rijndael')) {
+ require_once 'Rijndael.php';
+}
+
+/**#@+
+ * @access public
+ * @see Crypt_AES::encrypt()
+ * @see Crypt_AES::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_AES_MODE_CTR', -1);
+/**
+ * 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_AES_MODE_ECB', 1);
+/**
+ * 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_AES_MODE_CBC', 2);
+/**
+ * Encrypt / decrypt using the Cipher Feedback mode.
+ *
+ * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
+ */
+define('CRYPT_AES_MODE_CFB', 3);
+/**
+ * Encrypt / decrypt using the Cipher Feedback mode.
+ *
+ * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
+ */
+define('CRYPT_AES_MODE_OFB', 4);
+/**#@-*/
+
+/**#@+
+ * @access private
+ * @see Crypt_AES::Crypt_AES()
+ */
+/**
+ * Toggles the internal implementation
+ */
+define('CRYPT_AES_MODE_INTERNAL', 1);
+/**
+ * Toggles the mcrypt implementation
+ */
+define('CRYPT_AES_MODE_MCRYPT', 2);
+/**#@-*/
+
+/**
+ * Pure-PHP implementation of AES.
+ *
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @version 0.1.0
+ * @access public
+ * @package Crypt_AES
+ */
+class Crypt_AES extends Crypt_Rijndael {
+ /**
+ * mcrypt resource for encryption
+ *
+ * The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
+ * Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
+ *
+ * @see Crypt_AES::encrypt()
+ * @var String
+ * @access private
+ */
+ var $enmcrypt;
+
+ /**
+ * mcrypt resource for decryption
+ *
+ * The mcrypt resource can be recreated every time something needs to be created or it can be created just once.
+ * Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.
+ *
+ * @see Crypt_AES::decrypt()
+ * @var String
+ * @access private
+ */
+ var $demcrypt;
+
+ /**
+ * mcrypt resource for CFB mode
+ *
+ * @see Crypt_AES::encrypt()
+ * @see Crypt_AES::decrypt()
+ * @var String
+ * @access private
+ */
+ var $ecb;
+
+ /**
+ * Default Constructor.
+ *
+ * Determines whether or not the mcrypt extension should be used. $mode should only, at present, be
+ * CRYPT_AES_MODE_ECB or CRYPT_AES_MODE_CBC. If not explictly set, CRYPT_AES_MODE_CBC will be used.
+ *
+ * @param optional Integer $mode
+ * @return Crypt_AES
+ * @access public
+ */
+ function Crypt_AES($mode = CRYPT_AES_MODE_CBC)
+ {
+ if ( !defined('CRYPT_AES_MODE') ) {
+ switch (true) {
+ case extension_loaded('mcrypt') && in_array('rijndael-128', mcrypt_list_algorithms()):
+ define('CRYPT_AES_MODE', CRYPT_AES_MODE_MCRYPT);
+ break;
+ default:
+ define('CRYPT_AES_MODE', CRYPT_AES_MODE_INTERNAL);
+ }
+ }
+
+ switch ( CRYPT_AES_MODE ) {
+ case CRYPT_AES_MODE_MCRYPT:
+ switch ($mode) {
+ case CRYPT_AES_MODE_ECB:
+ $this->paddable = true;
+ $this->mode = MCRYPT_MODE_ECB;
+ break;
+ case CRYPT_AES_MODE_CTR:
+ // ctr doesn't have a constant associated with it even though it appears to be fairly widely
+ // supported. in lieu of knowing just how widely supported it is, i've, for now, opted not to
+ // include a compatibility layer. the layer has been implemented but, for now, is commented out.
+ $this->mode = 'ctr';
+ //$this->mode = in_array('ctr', mcrypt_list_modes()) ? 'ctr' : CRYPT_AES_MODE_CTR;
+ break;
+ case CRYPT_AES_MODE_CFB:
+ $this->mode = 'ncfb';
+ break;
+ case CRYPT_AES_MODE_OFB:
+ $this->mode = MCRYPT_MODE_NOFB;
+ break;
+ case CRYPT_AES_MODE_CBC:
+ default:
+ $this->paddable = true;
+ $this->mode = MCRYPT_MODE_CBC;
+ }
+
+ break;
+ default:
+ switch ($mode) {
+ case CRYPT_AES_MODE_ECB:
+ $this->paddable = true;
+ $this->mode = CRYPT_RIJNDAEL_MODE_ECB;
+ break;
+ case CRYPT_AES_MODE_CTR:
+ $this->mode = CRYPT_RIJNDAEL_MODE_CTR;
+ break;
+ case CRYPT_AES_MODE_CFB:
+ $this->mode = CRYPT_RIJNDAEL_MODE_CFB;
+ break;
+ case CRYPT_AES_MODE_OFB:
+ $this->mode = CRYPT_RIJNDAEL_MODE_OFB;
+ break;
+ case CRYPT_AES_MODE_CBC:
+ default:
+ $this->paddable = true;
+ $this->mode = CRYPT_RIJNDAEL_MODE_CBC;
+ }
+ }
+
+ if (CRYPT_AES_MODE == CRYPT_AES_MODE_INTERNAL) {
+ parent::Crypt_Rijndael($this->mode);
+ }
+
+ }
+
+ /**
+ * Dummy function
+ *
+ * Since Crypt_AES extends Crypt_Rijndael, this function is, technically, available, but it doesn't do anything.
+ *
+ * @access public
+ * @param Integer $length
+ */
+ function setBlockLength($length)
+ {
+ return;
+ }
+
+ /**
+ * Sets the initialization vector. (optional)
+ *
+ * SetIV is not required when CRYPT_RIJNDAEL_MODE_ECB is being used. If not explictly set, it'll be assumed
+ * to be all zero's.
+ *
+ * @access public
+ * @param String $iv
+ */
+ function setIV($iv)
+ {
+ parent::setIV($iv);
+ if ( CRYPT_AES_MODE == CRYPT_AES_MODE_MCRYPT ) {
+ $this->changed = true;
+ }
+ }
+
+ /**
+ * Encrypts a message.
+ *
+ * $plaintext will be padded with up to 16 additional bytes. Other AES implementations may or may not pad in the
+ * same manner. Other common approaches to padding and the reasons why it's necessary are discussed in the following
+ * URL:
+ *
+ * {@link http://www.di-mgt.com.au/cryptopad.html http://www.di-mgt.com.au/cryptopad.html}
+ *
+ * An alternative to padding is to, separately, send the length of the file. This is what SSH, in fact, does.
+ * strlen($plaintext) will still need to be a multiple of 16, however, arbitrary values can be added to make it that
+ * length.
+ *
+ * @see Crypt_AES::decrypt()
+ * @access public
+ * @param String $plaintext
+ */
+ function encrypt($plaintext)
+ {
+ if ( CRYPT_AES_MODE == CRYPT_AES_MODE_MCRYPT ) {
+ $this->_mcryptSetup();
+
+ // re: http://phpseclib.sourceforge.net/cfb-demo.phps
+ // using mcrypt's default handing of CFB the above would output two different things. using phpseclib's
+ // rewritten CFB implementation the above outputs the same thing twice.
+ if ($this->mode == 'ncfb' && $this->continuousBuffer) {
+ $iv = &$this->encryptIV;
+ $pos = &$this->enbuffer['pos'];
+ $len = strlen($plaintext);
+ $ciphertext = '';
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = 16 - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ $ciphertext = substr($iv, $orig_pos) ^ $plaintext;
+ $iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
+ $this->enbuffer['enmcrypt_init'] = true;
+ }
+ if ($len >= 16) {
+ if ($this->enbuffer['enmcrypt_init'] === false || $len > 280) {
+ if ($this->enbuffer['enmcrypt_init'] === true) {
+ mcrypt_generic_init($this->enmcrypt, $this->key, $iv);
+ $this->enbuffer['enmcrypt_init'] = false;
+ }
+ $ciphertext.= mcrypt_generic($this->enmcrypt, substr($plaintext, $i, $len - $len % 16));
+ $iv = substr($ciphertext, -16);
+ $len%= 16;
+ } else {
+ while ($len >= 16) {
+ $iv = mcrypt_generic($this->ecb, $iv) ^ substr($plaintext, $i, 16);
+ $ciphertext.= $iv;
+ $len-= 16;
+ $i+= 16;
+ }
+ }
+ }
+
+ if ($len) {
+ $iv = mcrypt_generic($this->ecb, $iv);
+ $block = $iv ^ substr($plaintext, -$len);
+ $iv = substr_replace($iv, $block, 0, $len);
+ $ciphertext.= $block;
+ $pos = $len;
+ }
+
+ return $ciphertext;
+ }
+
+ if ($this->paddable) {
+ $plaintext = $this->_pad($plaintext);
+ }
+
+ $ciphertext = mcrypt_generic($this->enmcrypt, $plaintext);
+
+ if (!$this->continuousBuffer) {
+ mcrypt_generic_init($this->enmcrypt, $this->key, $this->iv);
+ }
+
+ return $ciphertext;
+ }
+
+ return parent::encrypt($plaintext);
+ }
+
+ /**
+ * Decrypts a message.
+ *
+ * If strlen($ciphertext) is not a multiple of 16, null bytes will be added to the end of the string until it is.
+ *
+ * @see Crypt_AES::encrypt()
+ * @access public
+ * @param String $ciphertext
+ */
+ function decrypt($ciphertext)
+ {
+ if ( CRYPT_AES_MODE == CRYPT_AES_MODE_MCRYPT ) {
+ $this->_mcryptSetup();
+
+ if ($this->mode == 'ncfb' && $this->continuousBuffer) {
+ $iv = &$this->decryptIV;
+ $pos = &$this->debuffer['pos'];
+ $len = strlen($ciphertext);
+ $plaintext = '';
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = 16 - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
+ $plaintext = substr($iv, $orig_pos) ^ $ciphertext;
+ $iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
+ }
+ if ($len >= 16) {
+ $cb = substr($ciphertext, $i, $len - $len % 16);
+ $plaintext.= mcrypt_generic($this->ecb, $iv . $cb) ^ $cb;
+ $iv = substr($cb, -16);
+ $len%= 16;
+ }
+ if ($len) {
+ $iv = mcrypt_generic($this->ecb, $iv);
+ $plaintext.= $iv ^ substr($ciphertext, -$len);
+ $iv = substr_replace($iv, substr($ciphertext, -$len), 0, $len);
+ $pos = $len;
+ }
+
+ return $plaintext;
+ }
+
+ if ($this->paddable) {
+ // we pad with chr(0) since that's what mcrypt_generic does. to quote from http://php.net/function.mcrypt-generic :
+ // "The data is padded with "\0" to make sure the length of the data is n * blocksize."
+ $ciphertext = str_pad($ciphertext, (strlen($ciphertext) + 15) & 0xFFFFFFF0, chr(0));
+ }
+
+ $plaintext = mdecrypt_generic($this->demcrypt, $ciphertext);
+
+ if (!$this->continuousBuffer) {
+ mcrypt_generic_init($this->demcrypt, $this->key, $this->iv);
+ }
+
+ return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
+ }
+
+ return parent::decrypt($ciphertext);
+ }
+
+ /**
+ * Setup mcrypt
+ *
+ * Validates all the variables.
+ *
+ * @access private
+ */
+ function _mcryptSetup()
+ {
+ if (!$this->changed) {
+ return;
+ }
+
+ if (!$this->explicit_key_length) {
+ // this just copied from Crypt_Rijndael::_setup()
+ $length = strlen($this->key) >> 2;
+ if ($length > 8) {
+ $length = 8;
+ } else if ($length < 4) {
+ $length = 4;
+ }
+ $this->Nk = $length;
+ $this->key_size = $length << 2;
+ }
+
+ switch ($this->Nk) {
+ case 4: // 128
+ $this->key_size = 16;
+ break;
+ case 5: // 160
+ case 6: // 192
+ $this->key_size = 24;
+ break;
+ case 7: // 224
+ case 8: // 256
+ $this->key_size = 32;
+ }
+
+ $this->key = str_pad(substr($this->key, 0, $this->key_size), $this->key_size, chr(0));
+ $this->encryptIV = $this->decryptIV = $this->iv = str_pad(substr($this->iv, 0, 16), 16, chr(0));
+
+ if (!isset($this->enmcrypt)) {
+ $mode = $this->mode;
+ //$mode = $this->mode == CRYPT_AES_MODE_CTR ? MCRYPT_MODE_ECB : $this->mode;
+
+ $this->demcrypt = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', $mode, '');
+ $this->enmcrypt = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', $mode, '');
+
+ if ($mode == 'ncfb') {
+ $this->ecb = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
+ }
+
+ } // else should mcrypt_generic_deinit be called?
+
+ mcrypt_generic_init($this->demcrypt, $this->key, $this->iv);
+ mcrypt_generic_init($this->enmcrypt, $this->key, $this->iv);
+
+ if ($this->mode == 'ncfb') {
+ mcrypt_generic_init($this->ecb, $this->key, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0");
+ }
+
+ $this->changed = false;
+ }
+
+ /**
+ * Treat consecutive "packets" as if they are a continuous buffer.
+ *
+ * The default behavior.
+ *
+ * @see Crypt_Rijndael::disableContinuousBuffer()
+ * @access public
+ */
+ function enableContinuousBuffer()
+ {
+ parent::enableContinuousBuffer();
+
+ if (CRYPT_AES_MODE == CRYPT_AES_MODE_MCRYPT) {
+ $this->enbuffer['enmcrypt_init'] = true;
+ $this->debuffer['demcrypt_init'] = true;
+ }
+ }
+
+ /**
+ * Treat consecutive packets as if they are a discontinuous buffer.
+ *
+ * The default behavior.
+ *
+ * @see Crypt_Rijndael::enableContinuousBuffer()
+ * @access public
+ */
+ function disableContinuousBuffer()
+ {
+ parent::disableContinuousBuffer();
+
+ if (CRYPT_AES_MODE == CRYPT_AES_MODE_MCRYPT) {
+ mcrypt_generic_init($this->enmcrypt, $this->key, $this->iv);
+ mcrypt_generic_init($this->demcrypt, $this->key, $this->iv);
+ }
+ }
+}
+
+// vim: ts=4:sw=4:et:
+// vim6: fdl=1:
diff --git a/include/pear/Crypt/Hash.php b/include/pear/Crypt/Hash.php
new file mode 100644
index 0000000000000000000000000000000000000000..d9f73b47c526fd4aaf8924667adea2f49681591d
--- /dev/null
+++ b/include/pear/Crypt/Hash.php
@@ -0,0 +1,823 @@
+<?php
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Pure-PHP implementations of keyed-hash message authentication codes (HMACs) and various cryptographic hashing functions.
+ *
+ * Uses hash() or mhash() if available and an internal implementation, otherwise. Currently supports the following:
+ *
+ * md2, md5, md5-96, sha1, sha1-96, sha256, sha384, and sha512
+ *
+ * If {@link Crypt_Hash::setKey() setKey()} is called, {@link Crypt_Hash::hash() hash()} will return the HMAC as opposed to
+ * the hash. If no valid algorithm is provided, sha1 will be used.
+ *
+ * PHP versions 4 and 5
+ *
+ * {@internal The variable names are the same as those in
+ * {@link http://tools.ietf.org/html/rfc2104#section-2 RFC2104}.}}
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ * include('Crypt/Hash.php');
+ *
+ * $hash = new Crypt_Hash('sha1');
+ *
+ * $hash->setKey('abcdefg');
+ *
+ * echo base64_encode($hash->hash('abcdefg'));
+ * ?>
+ * </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_Hash
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @copyright MMVII Jim Wigginton
+ * @license http://www.opensource.org/licenses/mit-license.html MIT License
+ * @link http://phpseclib.sourceforge.net
+ */
+
+/**#@+
+ * @access private
+ * @see Crypt_Hash::Crypt_Hash()
+ */
+/**
+ * Toggles the internal implementation
+ */
+define('CRYPT_HASH_MODE_INTERNAL', 1);
+/**
+ * Toggles the mhash() implementation, which has been deprecated on PHP 5.3.0+.
+ */
+define('CRYPT_HASH_MODE_MHASH', 2);
+/**
+ * Toggles the hash() implementation, which works on PHP 5.1.2+.
+ */
+define('CRYPT_HASH_MODE_HASH', 3);
+/**#@-*/
+
+/**
+ * Pure-PHP implementations of keyed-hash message authentication codes (HMACs) and various cryptographic hashing functions.
+ *
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @version 0.1.0
+ * @access public
+ * @package Crypt_Hash
+ */
+class Crypt_Hash {
+ /**
+ * Byte-length of compression blocks / key (Internal HMAC)
+ *
+ * @see Crypt_Hash::setAlgorithm()
+ * @var Integer
+ * @access private
+ */
+ var $b;
+
+ /**
+ * Byte-length of hash output (Internal HMAC)
+ *
+ * @see Crypt_Hash::setHash()
+ * @var Integer
+ * @access private
+ */
+ var $l = false;
+
+ /**
+ * Hash Algorithm
+ *
+ * @see Crypt_Hash::setHash()
+ * @var String
+ * @access private
+ */
+ var $hash;
+
+ /**
+ * Key
+ *
+ * @see Crypt_Hash::setKey()
+ * @var String
+ * @access private
+ */
+ var $key = false;
+
+ /**
+ * Outer XOR (Internal HMAC)
+ *
+ * @see Crypt_Hash::setKey()
+ * @var String
+ * @access private
+ */
+ var $opad;
+
+ /**
+ * Inner XOR (Internal HMAC)
+ *
+ * @see Crypt_Hash::setKey()
+ * @var String
+ * @access private
+ */
+ var $ipad;
+
+ /**
+ * Default Constructor.
+ *
+ * @param optional String $hash
+ * @return Crypt_Hash
+ * @access public
+ */
+ function Crypt_Hash($hash = 'sha1')
+ {
+ if ( !defined('CRYPT_HASH_MODE') ) {
+ switch (true) {
+ case extension_loaded('hash'):
+ define('CRYPT_HASH_MODE', CRYPT_HASH_MODE_HASH);
+ break;
+ case extension_loaded('mhash'):
+ define('CRYPT_HASH_MODE', CRYPT_HASH_MODE_MHASH);
+ break;
+ default:
+ define('CRYPT_HASH_MODE', CRYPT_HASH_MODE_INTERNAL);
+ }
+ }
+
+ $this->setHash($hash);
+ }
+
+ /**
+ * Sets the key for HMACs
+ *
+ * Keys can be of any length.
+ *
+ * @access public
+ * @param optional String $key
+ */
+ function setKey($key = false)
+ {
+ $this->key = $key;
+ }
+
+ /**
+ * Sets the hash function.
+ *
+ * @access public
+ * @param String $hash
+ */
+ function setHash($hash)
+ {
+ $hash = strtolower($hash);
+ switch ($hash) {
+ case 'md5-96':
+ case 'sha1-96':
+ $this->l = 12; // 96 / 8 = 12
+ break;
+ case 'md2':
+ case 'md5':
+ $this->l = 16;
+ break;
+ case 'sha1':
+ $this->l = 20;
+ break;
+ case 'sha256':
+ $this->l = 32;
+ break;
+ case 'sha384':
+ $this->l = 48;
+ break;
+ case 'sha512':
+ $this->l = 64;
+ }
+
+ switch ($hash) {
+ case 'md2':
+ $mode = CRYPT_HASH_MODE == CRYPT_HASH_MODE_HASH && in_array('md2', hash_algos()) ?
+ CRYPT_HASH_MODE_HASH : CRYPT_HASH_MODE_INTERNAL;
+ break;
+ case 'sha384':
+ case 'sha512':
+ $mode = CRYPT_HASH_MODE == CRYPT_HASH_MODE_MHASH ? CRYPT_HASH_MODE_INTERNAL : CRYPT_HASH_MODE;
+ break;
+ default:
+ $mode = CRYPT_HASH_MODE;
+ }
+
+ switch ( $mode ) {
+ case CRYPT_HASH_MODE_MHASH:
+ switch ($hash) {
+ case 'md5':
+ case 'md5-96':
+ $this->hash = MHASH_MD5;
+ break;
+ case 'sha256':
+ $this->hash = MHASH_SHA256;
+ break;
+ case 'sha1':
+ case 'sha1-96':
+ default:
+ $this->hash = MHASH_SHA1;
+ }
+ return;
+ case CRYPT_HASH_MODE_HASH:
+ switch ($hash) {
+ case 'md5':
+ case 'md5-96':
+ $this->hash = 'md5';
+ return;
+ case 'md2':
+ case 'sha256':
+ case 'sha384':
+ case 'sha512':
+ $this->hash = $hash;
+ return;
+ case 'sha1':
+ case 'sha1-96':
+ default:
+ $this->hash = 'sha1';
+ }
+ return;
+ }
+
+ switch ($hash) {
+ case 'md2':
+ $this->b = 16;
+ $this->hash = array($this, '_md2');
+ break;
+ case 'md5':
+ case 'md5-96':
+ $this->b = 64;
+ $this->hash = array($this, '_md5');
+ break;
+ case 'sha256':
+ $this->b = 64;
+ $this->hash = array($this, '_sha256');
+ break;
+ case 'sha384':
+ case 'sha512':
+ $this->b = 128;
+ $this->hash = array($this, '_sha512');
+ break;
+ case 'sha1':
+ case 'sha1-96':
+ default:
+ $this->b = 64;
+ $this->hash = array($this, '_sha1');
+ }
+
+ $this->ipad = str_repeat(chr(0x36), $this->b);
+ $this->opad = str_repeat(chr(0x5C), $this->b);
+ }
+
+ /**
+ * Compute the HMAC.
+ *
+ * @access public
+ * @param String $text
+ * @return String
+ */
+ function hash($text)
+ {
+ $mode = is_array($this->hash) ? CRYPT_HASH_MODE_INTERNAL : CRYPT_HASH_MODE;
+
+ if (!empty($this->key) || is_string($this->key)) {
+ switch ( $mode ) {
+ case CRYPT_HASH_MODE_MHASH:
+ $output = mhash($this->hash, $text, $this->key);
+ break;
+ case CRYPT_HASH_MODE_HASH:
+ $output = hash_hmac($this->hash, $text, $this->key, true);
+ break;
+ case CRYPT_HASH_MODE_INTERNAL:
+ /* "Applications that use keys longer than B bytes will first hash the key using H and then use the
+ resultant L byte string as the actual key to HMAC."
+
+ -- http://tools.ietf.org/html/rfc2104#section-2 */
+ $key = strlen($this->key) > $this->b ? call_user_func($this->hash, $this->key) : $this->key;
+
+ $key = str_pad($key, $this->b, chr(0)); // step 1
+ $temp = $this->ipad ^ $key; // step 2
+ $temp .= $text; // step 3
+ $temp = call_user_func($this->hash, $temp); // step 4
+ $output = $this->opad ^ $key; // step 5
+ $output.= $temp; // step 6
+ $output = call_user_func($this->hash, $output); // step 7
+ }
+ } else {
+ switch ( $mode ) {
+ case CRYPT_HASH_MODE_MHASH:
+ $output = mhash($this->hash, $text);
+ break;
+ case CRYPT_HASH_MODE_HASH:
+ $output = hash($this->hash, $text, true);
+ break;
+ case CRYPT_HASH_MODE_INTERNAL:
+ $output = call_user_func($this->hash, $text);
+ }
+ }
+
+ return substr($output, 0, $this->l);
+ }
+
+ /**
+ * Returns the hash length (in bytes)
+ *
+ * @access public
+ * @return Integer
+ */
+ function getLength()
+ {
+ return $this->l;
+ }
+
+ /**
+ * Wrapper for MD5
+ *
+ * @access private
+ * @param String $m
+ */
+ function _md5($m)
+ {
+ return pack('H*', md5($m));
+ }
+
+ /**
+ * Wrapper for SHA1
+ *
+ * @access private
+ * @param String $m
+ */
+ function _sha1($m)
+ {
+ return pack('H*', sha1($m));
+ }
+
+ /**
+ * Pure-PHP implementation of MD2
+ *
+ * See {@link http://tools.ietf.org/html/rfc1319 RFC1319}.
+ *
+ * @access private
+ * @param String $m
+ */
+ function _md2($m)
+ {
+ static $s = array(
+ 41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6,
+ 19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188,
+ 76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24,
+ 138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251,
+ 245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63,
+ 148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50,
+ 39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165,
+ 181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210,
+ 150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157,
+ 112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27,
+ 96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
+ 85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197,
+ 234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65,
+ 129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123,
+ 8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233,
+ 203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228,
+ 166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237,
+ 31, 26, 219, 153, 141, 51, 159, 17, 131, 20
+ );
+
+ // Step 1. Append Padding Bytes
+ $pad = 16 - (strlen($m) & 0xF);
+ $m.= str_repeat(chr($pad), $pad);
+
+ $length = strlen($m);
+
+ // Step 2. Append Checksum
+ $c = str_repeat(chr(0), 16);
+ $l = chr(0);
+ for ($i = 0; $i < $length; $i+= 16) {
+ for ($j = 0; $j < 16; $j++) {
+ // RFC1319 incorrectly states that C[j] should be set to S[c xor L]
+ //$c[$j] = chr($s[ord($m[$i + $j] ^ $l)]);
+ // per <http://www.rfc-editor.org/errata_search.php?rfc=1319>, however, C[j] should be set to S[c xor L] xor C[j]
+ $c[$j] = chr($s[ord($m[$i + $j] ^ $l)] ^ ord($c[$j]));
+ $l = $c[$j];
+ }
+ }
+ $m.= $c;
+
+ $length+= 16;
+
+ // Step 3. Initialize MD Buffer
+ $x = str_repeat(chr(0), 48);
+
+ // Step 4. Process Message in 16-Byte Blocks
+ for ($i = 0; $i < $length; $i+= 16) {
+ for ($j = 0; $j < 16; $j++) {
+ $x[$j + 16] = $m[$i + $j];
+ $x[$j + 32] = $x[$j + 16] ^ $x[$j];
+ }
+ $t = chr(0);
+ for ($j = 0; $j < 18; $j++) {
+ for ($k = 0; $k < 48; $k++) {
+ $x[$k] = $t = $x[$k] ^ chr($s[ord($t)]);
+ //$t = $x[$k] = $x[$k] ^ chr($s[ord($t)]);
+ }
+ $t = chr(ord($t) + $j);
+ }
+ }
+
+ // Step 5. Output
+ return substr($x, 0, 16);
+ }
+
+ /**
+ * Pure-PHP implementation of SHA256
+ *
+ * See {@link http://en.wikipedia.org/wiki/SHA_hash_functions#SHA-256_.28a_SHA-2_variant.29_pseudocode SHA-256 (a SHA-2 variant) pseudocode - Wikipedia}.
+ *
+ * @access private
+ * @param String $m
+ */
+ function _sha256($m)
+ {
+ if (extension_loaded('suhosin')) {
+ return pack('H*', sha256($m));
+ }
+
+ // Initialize variables
+ $hash = array(
+ 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
+ );
+ // Initialize table of round constants
+ // (first 32 bits of the fractional parts of the cube roots of the first 64 primes 2..311)
+ static $k = array(
+ 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
+ 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
+ 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+ 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
+ 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+ 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+ 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
+ 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+ );
+
+ // Pre-processing
+ $length = strlen($m);
+ // to round to nearest 56 mod 64, we'll add 64 - (length + (64 - 56)) % 64
+ $m.= str_repeat(chr(0), 64 - (($length + 8) & 0x3F));
+ $m[$length] = chr(0x80);
+ // we don't support hashing strings 512MB long
+ $m.= pack('N2', 0, $length << 3);
+
+ // Process the message in successive 512-bit chunks
+ $chunks = str_split($m, 64);
+ foreach ($chunks as $chunk) {
+ $w = array();
+ for ($i = 0; $i < 16; $i++) {
+ extract(unpack('Ntemp', $this->_string_shift($chunk, 4)));
+ $w[] = $temp;
+ }
+
+ // Extend the sixteen 32-bit words into sixty-four 32-bit words
+ for ($i = 16; $i < 64; $i++) {
+ $s0 = $this->_rightRotate($w[$i - 15], 7) ^
+ $this->_rightRotate($w[$i - 15], 18) ^
+ $this->_rightShift( $w[$i - 15], 3);
+ $s1 = $this->_rightRotate($w[$i - 2], 17) ^
+ $this->_rightRotate($w[$i - 2], 19) ^
+ $this->_rightShift( $w[$i - 2], 10);
+ $w[$i] = $this->_add($w[$i - 16], $s0, $w[$i - 7], $s1);
+
+ }
+
+ // Initialize hash value for this chunk
+ list($a, $b, $c, $d, $e, $f, $g, $h) = $hash;
+
+ // Main loop
+ for ($i = 0; $i < 64; $i++) {
+ $s0 = $this->_rightRotate($a, 2) ^
+ $this->_rightRotate($a, 13) ^
+ $this->_rightRotate($a, 22);
+ $maj = ($a & $b) ^
+ ($a & $c) ^
+ ($b & $c);
+ $t2 = $this->_add($s0, $maj);
+
+ $s1 = $this->_rightRotate($e, 6) ^
+ $this->_rightRotate($e, 11) ^
+ $this->_rightRotate($e, 25);
+ $ch = ($e & $f) ^
+ ($this->_not($e) & $g);
+ $t1 = $this->_add($h, $s1, $ch, $k[$i], $w[$i]);
+
+ $h = $g;
+ $g = $f;
+ $f = $e;
+ $e = $this->_add($d, $t1);
+ $d = $c;
+ $c = $b;
+ $b = $a;
+ $a = $this->_add($t1, $t2);
+ }
+
+ // Add this chunk's hash to result so far
+ $hash = array(
+ $this->_add($hash[0], $a),
+ $this->_add($hash[1], $b),
+ $this->_add($hash[2], $c),
+ $this->_add($hash[3], $d),
+ $this->_add($hash[4], $e),
+ $this->_add($hash[5], $f),
+ $this->_add($hash[6], $g),
+ $this->_add($hash[7], $h)
+ );
+ }
+
+ // Produce the final hash value (big-endian)
+ return pack('N8', $hash[0], $hash[1], $hash[2], $hash[3], $hash[4], $hash[5], $hash[6], $hash[7]);
+ }
+
+ /**
+ * Pure-PHP implementation of SHA384 and SHA512
+ *
+ * @access private
+ * @param String $m
+ */
+ function _sha512($m)
+ {
+ if (!class_exists('Math_BigInteger')) {
+ require_once('Math/BigInteger.php');
+ }
+
+ static $init384, $init512, $k;
+
+ if (!isset($k)) {
+ // Initialize variables
+ $init384 = array( // initial values for SHA384
+ 'cbbb9d5dc1059ed8', '629a292a367cd507', '9159015a3070dd17', '152fecd8f70e5939',
+ '67332667ffc00b31', '8eb44a8768581511', 'db0c2e0d64f98fa7', '47b5481dbefa4fa4'
+ );
+ $init512 = array( // initial values for SHA512
+ '6a09e667f3bcc908', 'bb67ae8584caa73b', '3c6ef372fe94f82b', 'a54ff53a5f1d36f1',
+ '510e527fade682d1', '9b05688c2b3e6c1f', '1f83d9abfb41bd6b', '5be0cd19137e2179'
+ );
+
+ for ($i = 0; $i < 8; $i++) {
+ $init384[$i] = new Math_BigInteger($init384[$i], 16);
+ $init384[$i]->setPrecision(64);
+ $init512[$i] = new Math_BigInteger($init512[$i], 16);
+ $init512[$i]->setPrecision(64);
+ }
+
+ // Initialize table of round constants
+ // (first 64 bits of the fractional parts of the cube roots of the first 80 primes 2..409)
+ $k = array(
+ '428a2f98d728ae22', '7137449123ef65cd', 'b5c0fbcfec4d3b2f', 'e9b5dba58189dbbc',
+ '3956c25bf348b538', '59f111f1b605d019', '923f82a4af194f9b', 'ab1c5ed5da6d8118',
+ 'd807aa98a3030242', '12835b0145706fbe', '243185be4ee4b28c', '550c7dc3d5ffb4e2',
+ '72be5d74f27b896f', '80deb1fe3b1696b1', '9bdc06a725c71235', 'c19bf174cf692694',
+ 'e49b69c19ef14ad2', 'efbe4786384f25e3', '0fc19dc68b8cd5b5', '240ca1cc77ac9c65',
+ '2de92c6f592b0275', '4a7484aa6ea6e483', '5cb0a9dcbd41fbd4', '76f988da831153b5',
+ '983e5152ee66dfab', 'a831c66d2db43210', 'b00327c898fb213f', 'bf597fc7beef0ee4',
+ 'c6e00bf33da88fc2', 'd5a79147930aa725', '06ca6351e003826f', '142929670a0e6e70',
+ '27b70a8546d22ffc', '2e1b21385c26c926', '4d2c6dfc5ac42aed', '53380d139d95b3df',
+ '650a73548baf63de', '766a0abb3c77b2a8', '81c2c92e47edaee6', '92722c851482353b',
+ 'a2bfe8a14cf10364', 'a81a664bbc423001', 'c24b8b70d0f89791', 'c76c51a30654be30',
+ 'd192e819d6ef5218', 'd69906245565a910', 'f40e35855771202a', '106aa07032bbd1b8',
+ '19a4c116b8d2d0c8', '1e376c085141ab53', '2748774cdf8eeb99', '34b0bcb5e19b48a8',
+ '391c0cb3c5c95a63', '4ed8aa4ae3418acb', '5b9cca4f7763e373', '682e6ff3d6b2b8a3',
+ '748f82ee5defb2fc', '78a5636f43172f60', '84c87814a1f0ab72', '8cc702081a6439ec',
+ '90befffa23631e28', 'a4506cebde82bde9', 'bef9a3f7b2c67915', 'c67178f2e372532b',
+ 'ca273eceea26619c', 'd186b8c721c0c207', 'eada7dd6cde0eb1e', 'f57d4f7fee6ed178',
+ '06f067aa72176fba', '0a637dc5a2c898a6', '113f9804bef90dae', '1b710b35131c471b',
+ '28db77f523047d84', '32caab7b40c72493', '3c9ebe0a15c9bebc', '431d67c49c100d4c',
+ '4cc5d4becb3e42b6', '597f299cfc657e2a', '5fcb6fab3ad6faec', '6c44198c4a475817'
+ );
+
+ for ($i = 0; $i < 80; $i++) {
+ $k[$i] = new Math_BigInteger($k[$i], 16);
+ }
+ }
+
+ $hash = $this->l == 48 ? $init384 : $init512;
+
+ // Pre-processing
+ $length = strlen($m);
+ // to round to nearest 112 mod 128, we'll add 128 - (length + (128 - 112)) % 128
+ $m.= str_repeat(chr(0), 128 - (($length + 16) & 0x7F));
+ $m[$length] = chr(0x80);
+ // we don't support hashing strings 512MB long
+ $m.= pack('N4', 0, 0, 0, $length << 3);
+
+ // Process the message in successive 1024-bit chunks
+ $chunks = str_split($m, 128);
+ foreach ($chunks as $chunk) {
+ $w = array();
+ for ($i = 0; $i < 16; $i++) {
+ $temp = new Math_BigInteger($this->_string_shift($chunk, 8), 256);
+ $temp->setPrecision(64);
+ $w[] = $temp;
+ }
+
+ // Extend the sixteen 32-bit words into eighty 32-bit words
+ for ($i = 16; $i < 80; $i++) {
+ $temp = array(
+ $w[$i - 15]->bitwise_rightRotate(1),
+ $w[$i - 15]->bitwise_rightRotate(8),
+ $w[$i - 15]->bitwise_rightShift(7)
+ );
+ $s0 = $temp[0]->bitwise_xor($temp[1]);
+ $s0 = $s0->bitwise_xor($temp[2]);
+ $temp = array(
+ $w[$i - 2]->bitwise_rightRotate(19),
+ $w[$i - 2]->bitwise_rightRotate(61),
+ $w[$i - 2]->bitwise_rightShift(6)
+ );
+ $s1 = $temp[0]->bitwise_xor($temp[1]);
+ $s1 = $s1->bitwise_xor($temp[2]);
+ $w[$i] = $w[$i - 16]->copy();
+ $w[$i] = $w[$i]->add($s0);
+ $w[$i] = $w[$i]->add($w[$i - 7]);
+ $w[$i] = $w[$i]->add($s1);
+ }
+
+ // Initialize hash value for this chunk
+ $a = $hash[0]->copy();
+ $b = $hash[1]->copy();
+ $c = $hash[2]->copy();
+ $d = $hash[3]->copy();
+ $e = $hash[4]->copy();
+ $f = $hash[5]->copy();
+ $g = $hash[6]->copy();
+ $h = $hash[7]->copy();
+
+ // Main loop
+ for ($i = 0; $i < 80; $i++) {
+ $temp = array(
+ $a->bitwise_rightRotate(28),
+ $a->bitwise_rightRotate(34),
+ $a->bitwise_rightRotate(39)
+ );
+ $s0 = $temp[0]->bitwise_xor($temp[1]);
+ $s0 = $s0->bitwise_xor($temp[2]);
+ $temp = array(
+ $a->bitwise_and($b),
+ $a->bitwise_and($c),
+ $b->bitwise_and($c)
+ );
+ $maj = $temp[0]->bitwise_xor($temp[1]);
+ $maj = $maj->bitwise_xor($temp[2]);
+ $t2 = $s0->add($maj);
+
+ $temp = array(
+ $e->bitwise_rightRotate(14),
+ $e->bitwise_rightRotate(18),
+ $e->bitwise_rightRotate(41)
+ );
+ $s1 = $temp[0]->bitwise_xor($temp[1]);
+ $s1 = $s1->bitwise_xor($temp[2]);
+ $temp = array(
+ $e->bitwise_and($f),
+ $g->bitwise_and($e->bitwise_not())
+ );
+ $ch = $temp[0]->bitwise_xor($temp[1]);
+ $t1 = $h->add($s1);
+ $t1 = $t1->add($ch);
+ $t1 = $t1->add($k[$i]);
+ $t1 = $t1->add($w[$i]);
+
+ $h = $g->copy();
+ $g = $f->copy();
+ $f = $e->copy();
+ $e = $d->add($t1);
+ $d = $c->copy();
+ $c = $b->copy();
+ $b = $a->copy();
+ $a = $t1->add($t2);
+ }
+
+ // Add this chunk's hash to result so far
+ $hash = array(
+ $hash[0]->add($a),
+ $hash[1]->add($b),
+ $hash[2]->add($c),
+ $hash[3]->add($d),
+ $hash[4]->add($e),
+ $hash[5]->add($f),
+ $hash[6]->add($g),
+ $hash[7]->add($h)
+ );
+ }
+
+ // Produce the final hash value (big-endian)
+ // (Crypt_Hash::hash() trims the output for hashes but not for HMACs. as such, we trim the output here)
+ $temp = $hash[0]->toBytes() . $hash[1]->toBytes() . $hash[2]->toBytes() . $hash[3]->toBytes() .
+ $hash[4]->toBytes() . $hash[5]->toBytes();
+ if ($this->l != 48) {
+ $temp.= $hash[6]->toBytes() . $hash[7]->toBytes();
+ }
+
+ return $temp;
+ }
+
+ /**
+ * Right Rotate
+ *
+ * @access private
+ * @param Integer $int
+ * @param Integer $amt
+ * @see _sha256()
+ * @return Integer
+ */
+ function _rightRotate($int, $amt)
+ {
+ $invamt = 32 - $amt;
+ $mask = (1 << $invamt) - 1;
+ return (($int << $invamt) & 0xFFFFFFFF) | (($int >> $amt) & $mask);
+ }
+
+ /**
+ * Right Shift
+ *
+ * @access private
+ * @param Integer $int
+ * @param Integer $amt
+ * @see _sha256()
+ * @return Integer
+ */
+ function _rightShift($int, $amt)
+ {
+ $mask = (1 << (32 - $amt)) - 1;
+ return ($int >> $amt) & $mask;
+ }
+
+ /**
+ * Not
+ *
+ * @access private
+ * @param Integer $int
+ * @see _sha256()
+ * @return Integer
+ */
+ function _not($int)
+ {
+ return ~$int & 0xFFFFFFFF;
+ }
+
+ /**
+ * Add
+ *
+ * _sha256() adds multiple unsigned 32-bit integers. Since PHP doesn't support unsigned integers and since the
+ * possibility of overflow exists, care has to be taken. Math_BigInteger() could be used but this should be faster.
+ *
+ * @param Integer $...
+ * @return Integer
+ * @see _sha256()
+ * @access private
+ */
+ function _add()
+ {
+ static $mod;
+ if (!isset($mod)) {
+ $mod = pow(2, 32);
+ }
+
+ $result = 0;
+ $arguments = func_get_args();
+ foreach ($arguments as $argument) {
+ $result+= $argument < 0 ? ($argument & 0x7FFFFFFF) + 0x80000000 : $argument;
+ }
+
+ return fmod($result, $mod);
+ }
+
+ /**
+ * String Shift
+ *
+ * Inspired by array_shift
+ *
+ * @param String $string
+ * @param optional Integer $index
+ * @return String
+ * @access private
+ */
+ function _string_shift(&$string, $index = 1)
+ {
+ $substr = substr($string, 0, $index);
+ $string = substr($string, $index);
+ return $substr;
+ }
+}
diff --git a/include/pear/Crypt/Random.php b/include/pear/Crypt/Random.php
new file mode 100644
index 0000000000000000000000000000000000000000..cc89dff582c9de2463f34219253adca0882c34b5
--- /dev/null
+++ b/include/pear/Crypt/Random.php
@@ -0,0 +1,249 @@
+<?php
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Random Number Generator
+ *
+ * PHP versions 4 and 5
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ * include('Crypt/Random.php');
+ *
+ * echo bin2hex(crypt_random_string(8));
+ * ?>
+ * </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_Random
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @copyright MMVII Jim Wigginton
+ * @license http://www.opensource.org/licenses/mit-license.html MIT License
+ * @link http://phpseclib.sourceforge.net
+ */
+
+/**
+ * "Is Windows" test
+ *
+ * @access private
+ */
+define('CRYPT_RANDOM_IS_WINDOWS', strtoupper(substr(PHP_OS, 0, 3)) === 'WIN');
+
+/**
+ * Generate a random string.
+ *
+ * Although microoptimizations are generally discouraged as they impair readability this function is ripe with
+ * microoptimizations because this function has the potential of being called a huge number of times.
+ * eg. for RSA key generation.
+ *
+ * @param Integer $length
+ * @return String
+ * @access public
+ */
+function crypt_random_string($length)
+{
+ if (CRYPT_RANDOM_IS_WINDOWS) {
+ // method 1. prior to PHP 5.3 this would call rand() on windows hence the function_exists('class_alias') call.
+ // ie. class_alias is a function that was introduced in PHP 5.3
+ if (function_exists('mcrypt_create_iv') && function_exists('class_alias')) {
+ return mcrypt_create_iv($length);
+ }
+ // method 2. openssl_random_pseudo_bytes was introduced in PHP 5.3.0 but prior to PHP 5.3.4 there was,
+ // to quote <http://php.net/ChangeLog-5.php#5.3.4>, "possible blocking behavior". as of 5.3.4
+ // openssl_random_pseudo_bytes and mcrypt_create_iv do the exact same thing on Windows. ie. they both
+ // call php_win32_get_random_bytes():
+ //
+ // https://github.com/php/php-src/blob/7014a0eb6d1611151a286c0ff4f2238f92c120d6/ext/openssl/openssl.c#L5008
+ // https://github.com/php/php-src/blob/7014a0eb6d1611151a286c0ff4f2238f92c120d6/ext/mcrypt/mcrypt.c#L1392
+ //
+ // php_win32_get_random_bytes() is defined thusly:
+ //
+ // https://github.com/php/php-src/blob/7014a0eb6d1611151a286c0ff4f2238f92c120d6/win32/winutil.c#L80
+ //
+ // we're calling it, all the same, in the off chance that the mcrypt extension is not available
+ if (function_exists('openssl_random_pseudo_bytes') && version_compare(PHP_VERSION, '5.3.4', '>=')) {
+ return openssl_random_pseudo_bytes($length);
+ }
+ } else {
+ // method 1. the fastest
+ if (function_exists('openssl_random_pseudo_bytes')) {
+ return openssl_random_pseudo_bytes($length);
+ }
+ // method 2
+ static $fp = true;
+ if ($fp === true) {
+ // warning's will be output unles the error suppression operator is used. errors such as
+ // "open_basedir restriction in effect", "Permission denied", "No such file or directory", etc.
+ $fp = @fopen('/dev/urandom', 'rb');
+ }
+ if ($fp !== true && $fp !== false) { // surprisingly faster than !is_bool() or is_resource()
+ return fread($fp, $length);
+ }
+ // method 3. pretty much does the same thing as method 2 per the following url:
+ // https://github.com/php/php-src/blob/7014a0eb6d1611151a286c0ff4f2238f92c120d6/ext/mcrypt/mcrypt.c#L1391
+ // surprisingly slower than method 2. maybe that's because mcrypt_create_iv does a bunch of error checking that we're
+ // not doing. regardless, this'll only be called if this PHP script couldn't open /dev/urandom due to open_basedir
+ // restrictions or some such
+ if (function_exists('mcrypt_create_iv')) {
+ return mcrypt_create_iv($length, MCRYPT_DEV_URANDOM);
+ }
+ }
+ // at this point we have no choice but to use a pure-PHP CSPRNG
+
+ // cascade entropy across multiple PHP instances by fixing the session and collecting all
+ // environmental variables, including the previous session data and the current session
+ // data.
+ //
+ // mt_rand seeds itself by looking at the PID and the time, both of which are (relatively)
+ // easy to guess at. linux uses mouse clicks, keyboard timings, etc, as entropy sources, but
+ // PHP isn't low level to be able to use those as sources and on a web server there's not likely
+ // going to be a ton of keyboard or mouse action. web servers do have one thing that we can use
+ // however. a ton of people visiting the website. obviously you don't want to base your seeding
+ // soley on parameters a potential attacker sends but (1) not everything in $_SERVER is controlled
+ // by the user and (2) this isn't just looking at the data sent by the current user - it's based
+ // on the data sent by all users. one user requests the page and a hash of their info is saved.
+ // another user visits the page and the serialization of their data is utilized along with the
+ // server envirnment stuff and a hash of the previous http request data (which itself utilizes
+ // a hash of the session data before that). certainly an attacker should be assumed to have
+ // full control over his own http requests. he, however, is not going to have control over
+ // everyone's http requests.
+ static $crypto = false, $v;
+ if ($crypto === false) {
+ // save old session data
+ $old_session_id = session_id();
+ $old_use_cookies = ini_get('session.use_cookies');
+ $old_session_cache_limiter = session_cache_limiter();
+ if (isset($_SESSION)) {
+ $_OLD_SESSION = $_SESSION;
+ }
+ if ($old_session_id != '') {
+ session_write_close();
+ }
+
+ session_id(1);
+ ini_set('session.use_cookies', 0);
+ session_cache_limiter('');
+ session_start();
+
+ $v = $seed = $_SESSION['seed'] = pack('H*', sha1(
+ serialize($_SERVER) .
+ serialize($_POST) .
+ serialize($_GET) .
+ serialize($_COOKIE) .
+ serialize($GLOBALS) .
+ serialize($_SESSION) .
+ serialize($_OLD_SESSION)
+ ));
+ if (!isset($_SESSION['count'])) {
+ $_SESSION['count'] = 0;
+ }
+ $_SESSION['count']++;
+
+ session_write_close();
+
+ // restore old session data
+ if ($old_session_id != '') {
+ session_id($old_session_id);
+ session_start();
+ ini_set('session.use_cookies', $old_use_cookies);
+ session_cache_limiter($old_session_cache_limiter);
+ } else {
+ if (isset($_OLD_SESSION)) {
+ $_SESSION = $_OLD_SESSION;
+ unset($_OLD_SESSION);
+ } else {
+ unset($_SESSION);
+ }
+ }
+
+ // in SSH2 a shared secret and an exchange hash are generated through the key exchange process.
+ // the IV client to server is the hash of that "nonce" with the letter A and for the encryption key it's the letter C.
+ // if the hash doesn't produce enough a key or an IV that's long enough concat successive hashes of the
+ // original hash and the current hash. we'll be emulating that. for more info see the following URL:
+ //
+ // http://tools.ietf.org/html/rfc4253#section-7.2
+ //
+ // see the is_string($crypto) part for an example of how to expand the keys
+ $key = pack('H*', sha1($seed . 'A'));
+ $iv = pack('H*', sha1($seed . 'C'));
+
+ // ciphers are used as per the nist.gov link below. also, see this link:
+ //
+ // http://en.wikipedia.org/wiki/Cryptographically_secure_pseudorandom_number_generator#Designs_based_on_cryptographic_primitives
+ switch (true) {
+ case class_exists('Crypt_AES'):
+ $crypto = new Crypt_AES(CRYPT_AES_MODE_CTR);
+ break;
+ case class_exists('Crypt_TripleDES'):
+ $crypto = new Crypt_TripleDES(CRYPT_DES_MODE_CTR);
+ break;
+ case class_exists('Crypt_DES'):
+ $crypto = new Crypt_DES(CRYPT_DES_MODE_CTR);
+ break;
+ case class_exists('Crypt_RC4'):
+ $crypto = new Crypt_RC4();
+ break;
+ default:
+ $crypto = $seed;
+ return crypt_random_string($length);
+ }
+
+ $crypto->setKey($key);
+ $crypto->setIV($iv);
+ $crypto->enableContinuousBuffer();
+ }
+
+ if (is_string($crypto)) {
+ // the following is based off of ANSI X9.31:
+ //
+ // http://csrc.nist.gov/groups/STM/cavp/documents/rng/931rngext.pdf
+ //
+ // OpenSSL uses that same standard for it's random numbers:
+ //
+ // http://www.opensource.apple.com/source/OpenSSL/OpenSSL-38/openssl/fips-1.0/rand/fips_rand.c
+ // (do a search for "ANS X9.31 A.2.4")
+ //
+ // ANSI X9.31 recommends ciphers be used and phpseclib does use them if they're available (see
+ // later on in the code) but if they're not we'll use sha1
+ $result = '';
+ while (strlen($result) < $length) { // each loop adds 20 bytes
+ // microtime() isn't packed as "densely" as it could be but then neither is that the idea.
+ // the idea is simply to ensure that each "block" has a unique element to it.
+ $i = pack('H*', sha1(microtime()));
+ $r = pack('H*', sha1($i ^ $v));
+ $v = pack('H*', sha1($r ^ $i));
+ $result.= $r;
+ }
+ return substr($result, 0, $length);
+ }
+
+ //return $crypto->encrypt(str_repeat("\0", $length));
+
+ $result = '';
+ while (strlen($result) < $length) {
+ $i = $crypto->encrypt(microtime());
+ $r = $crypto->encrypt($i ^ $v);
+ $v = $crypto->encrypt($r ^ $i);
+ $result.= $r;
+ }
+ return substr($result, 0, $length);
+}
diff --git a/include/pear/Crypt/Rijndael.php b/include/pear/Crypt/Rijndael.php
new file mode 100644
index 0000000000000000000000000000000000000000..e17819b2aeade85c136c3c18bfcc33c0bb2b38eb
--- /dev/null
+++ b/include/pear/Crypt/Rijndael.php
@@ -0,0 +1,2062 @@
+<?php
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Pure-PHP implementation of Rijndael.
+ *
+ * Does not use mcrypt, even when available, for reasons that are explained below.
+ *
+ * PHP versions 4 and 5
+ *
+ * If {@link Crypt_Rijndael::setBlockLength() setBlockLength()} isn't called, it'll be assumed to be 128 bits. If
+ * {@link Crypt_Rijndael::setKeyLength() setKeyLength()} isn't called, it'll be calculated from
+ * {@link Crypt_Rijndael::setKey() setKey()}. ie. if the key is 128-bits, the key length will be 128-bits. If it's
+ * 136-bits it'll be null-padded to 160-bits and 160 bits will be the key length until
+ * {@link Crypt_Rijndael::setKey() setKey()} is called, again, at which point, it'll be recalculated.
+ *
+ * Not all Rijndael implementations may support 160-bits or 224-bits as the block length / key length. mcrypt, for example,
+ * does not. AES, itself, only supports block lengths of 128 and key lengths of 128, 192, and 256.
+ * {@link http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=10 Rijndael-ammended.pdf#page=10} defines the
+ * algorithm for block lengths of 192 and 256 but not for block lengths / key lengths of 160 and 224. Indeed, 160 and 224
+ * are first defined as valid key / block lengths in
+ * {@link http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=44 Rijndael-ammended.pdf#page=44}:
+ * Extensions: Other block and Cipher Key lengths.
+ *
+ * {@internal The variable names are the same as those in
+ * {@link http://www.csrc.nist.gov/publications/fips/fips197/fips-197.pdf#page=10 fips-197.pdf#page=10}.}}
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ * include('Crypt/Rijndael.php');
+ *
+ * $rijndael = new Crypt_Rijndael();
+ *
+ * $rijndael->setKey('abcdefghijklmnop');
+ *
+ * $size = 10 * 1024;
+ * $plaintext = '';
+ * for ($i = 0; $i < $size; $i++) {
+ * $plaintext.= 'a';
+ * }
+ *
+ * echo $rijndael->decrypt($rijndael->encrypt($plaintext));
+ * ?>
+ * </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_Rijndael
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @copyright MMVIII Jim Wigginton
+ * @license http://www.opensource.org/licenses/mit-license.html MIT License
+ * @link http://phpseclib.sourceforge.net
+ */
+
+/**#@+
+ * @access public
+ * @see Crypt_Rijndael::encrypt()
+ * @see Crypt_Rijndael::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_RIJNDAEL_MODE_CTR', -1);
+/**
+ * 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_RIJNDAEL_MODE_ECB', 1);
+/**
+ * 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_RIJNDAEL_MODE_CBC', 2);
+/**
+ * Encrypt / decrypt using the Cipher Feedback mode.
+ *
+ * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
+ */
+define('CRYPT_RIJNDAEL_MODE_CFB', 3);
+/**
+ * Encrypt / decrypt using the Cipher Feedback mode.
+ *
+ * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
+ */
+define('CRYPT_RIJNDAEL_MODE_OFB', 4);
+/**#@-*/
+
+/**#@+
+ * @access private
+ * @see Crypt_Rijndael::Crypt_Rijndael()
+ */
+/**
+ * Toggles the internal implementation
+ */
+define('CRYPT_RIJNDAEL_MODE_INTERNAL', 1);
+/**
+ * Toggles the mcrypt implementation
+ */
+define('CRYPT_RIJNDAEL_MODE_MCRYPT', 2);
+/**#@-*/
+
+/**
+ * Pure-PHP implementation of Rijndael.
+ *
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @version 0.1.0
+ * @access public
+ * @package Crypt_Rijndael
+ */
+class Crypt_Rijndael {
+ /**
+ * The Encryption Mode
+ *
+ * @see Crypt_Rijndael::Crypt_Rijndael()
+ * @var Integer
+ * @access private
+ */
+ var $mode;
+
+ /**
+ * The Key
+ *
+ * @see Crypt_Rijndael::setKey()
+ * @var String
+ * @access private
+ */
+ var $key = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+
+ /**
+ * The Initialization Vector
+ *
+ * @see Crypt_Rijndael::setIV()
+ * @var String
+ * @access private
+ */
+ var $iv = '';
+
+ /**
+ * A "sliding" Initialization Vector
+ *
+ * @see Crypt_Rijndael::enableContinuousBuffer()
+ * @var String
+ * @access private
+ */
+ var $encryptIV = '';
+
+ /**
+ * A "sliding" Initialization Vector
+ *
+ * @see Crypt_Rijndael::enableContinuousBuffer()
+ * @var String
+ * @access private
+ */
+ var $decryptIV = '';
+
+ /**
+ * Continuous Buffer status
+ *
+ * @see Crypt_Rijndael::enableContinuousBuffer()
+ * @var Boolean
+ * @access private
+ */
+ var $continuousBuffer = false;
+
+ /**
+ * Padding status
+ *
+ * @see Crypt_Rijndael::enablePadding()
+ * @var Boolean
+ * @access private
+ */
+ var $padding = true;
+
+ /**
+ * Does the key schedule need to be (re)calculated?
+ *
+ * @see setKey()
+ * @see setBlockLength()
+ * @see setKeyLength()
+ * @var Boolean
+ * @access private
+ */
+ var $changed = true;
+
+ /**
+ * Has the key length explicitly been set or should it be derived from the key, itself?
+ *
+ * @see setKeyLength()
+ * @var Boolean
+ * @access private
+ */
+ var $explicit_key_length = false;
+
+ /**
+ * The Key Schedule
+ *
+ * @see _setup()
+ * @var Array
+ * @access private
+ */
+ var $w;
+
+ /**
+ * The Inverse Key Schedule
+ *
+ * @see _setup()
+ * @var Array
+ * @access private
+ */
+ var $dw;
+
+ /**
+ * The Block Length
+ *
+ * @see setBlockLength()
+ * @var Integer
+ * @access private
+ * @internal The max value is 32, the min value is 16. All valid values are multiples of 4. Exists in conjunction with
+ * $Nb because we need this value and not $Nb to pad strings appropriately.
+ */
+ var $block_size = 16;
+
+ /**
+ * The Block Length divided by 32
+ *
+ * @see setBlockLength()
+ * @var Integer
+ * @access private
+ * @internal The max value is 256 / 32 = 8, the min value is 128 / 32 = 4. Exists in conjunction with $block_size
+ * because the encryption / decryption / key schedule creation requires this number and not $block_size. We could
+ * derive this from $block_size 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 $Nb = 4;
+
+ /**
+ * The Key Length
+ *
+ * @see setKeyLength()
+ * @var Integer
+ * @access private
+ * @internal The max value is 256 / 8 = 32, the min value is 128 / 8 = 16. Exists in conjunction with $key_size
+ * because the encryption / decryption / key schedule creation requires this number and not $key_size. We could
+ * derive this from $key_size 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_size = 16;
+
+ /**
+ * The Key Length divided by 32
+ *
+ * @see setKeyLength()
+ * @var Integer
+ * @access private
+ * @internal The max value is 256 / 32 = 8, the min value is 128 / 32 = 4
+ */
+ var $Nk = 4;
+
+ /**
+ * The Number of Rounds
+ *
+ * @var Integer
+ * @access private
+ * @internal The max value is 14, the min value is 10.
+ */
+ var $Nr;
+
+ /**
+ * Shift offsets
+ *
+ * @var Array
+ * @access private
+ */
+ var $c;
+
+ /**
+ * Precomputed mixColumns table
+ *
+ * @see Crypt_Rijndael()
+ * @var Array
+ * @access private
+ */
+ var $t0;
+
+ /**
+ * Precomputed mixColumns table
+ *
+ * @see Crypt_Rijndael()
+ * @var Array
+ * @access private
+ */
+ var $t1;
+
+ /**
+ * Precomputed mixColumns table
+ *
+ * @see Crypt_Rijndael()
+ * @var Array
+ * @access private
+ */
+ var $t2;
+
+ /**
+ * Precomputed mixColumns table
+ *
+ * @see Crypt_Rijndael()
+ * @var Array
+ * @access private
+ */
+ var $t3;
+
+ /**
+ * Precomputed invMixColumns table
+ *
+ * @see Crypt_Rijndael()
+ * @var Array
+ * @access private
+ */
+ var $dt0;
+
+ /**
+ * Precomputed invMixColumns table
+ *
+ * @see Crypt_Rijndael()
+ * @var Array
+ * @access private
+ */
+ var $dt1;
+
+ /**
+ * Precomputed invMixColumns table
+ *
+ * @see Crypt_Rijndael()
+ * @var Array
+ * @access private
+ */
+ var $dt2;
+
+ /**
+ * Precomputed invMixColumns table
+ *
+ * @see Crypt_Rijndael()
+ * @var Array
+ * @access private
+ */
+ var $dt3;
+
+ /**
+ * The SubByte S-Box
+ *
+ * @see Crypt_Rijndael::_encryptBlock()
+ * @var Array
+ * @access private
+ */
+ var $sbox;
+
+ /**
+ * The inverse SubByte S-Box
+ *
+ * @see Crypt_Rijndael::_decryptBlock()
+ * @var Array
+ * @access private
+ */
+ var $isbox;
+
+ /**
+ * Performance-optimized callback function for en/decrypt()
+ *
+ * @see Crypt_Rijndael::encrypt()
+ * @see Crypt_Rijndael::decrypt()
+ * @see Crypt_Rijndael::inline_crypt_setup()
+ * @see Crypt_Rijndael::$use_inline_crypt
+ * @var Callback
+ * @access private
+ */
+ var $inline_crypt;
+
+ /**
+ * Holds whether performance-optimized $inline_crypt should be used or not.
+ *
+ * @see Crypt_Rijndael::Crypt_Rijndael()
+ * @see Crypt_Rijndael::inline_crypt_setup()
+ * @see Crypt_Rijndael::$inline_crypt
+ * @var Boolean
+ * @access private
+ */
+ var $use_inline_crypt = true;
+
+ /**
+ * Is the mode one that is paddable?
+ *
+ * @see Crypt_Rijndael::Crypt_Rijndael()
+ * @var Boolean
+ * @access private
+ */
+ var $paddable = false;
+
+ /**
+ * Encryption buffer for CTR, OFB and CFB modes
+ *
+ * @see Crypt_Rijndael::encrypt()
+ * @var String
+ * @access private
+ */
+ var $enbuffer = array('encrypted' => '', 'xor' => '', 'pos' => 0);
+
+ /**
+ * Decryption buffer for CTR, OFB and CFB modes
+ *
+ * @see Crypt_Rijndael::decrypt()
+ * @var String
+ * @access private
+ */
+ var $debuffer = array('ciphertext' => '', 'xor' => '', 'pos' => 0);
+
+ /**
+ * Default Constructor.
+ *
+ * Determines whether or not the mcrypt extension should be used. $mode should only, at present, be
+ * CRYPT_RIJNDAEL_MODE_ECB or CRYPT_RIJNDAEL_MODE_CBC. If not explictly set, CRYPT_RIJNDAEL_MODE_CBC will be used.
+ *
+ * @param optional Integer $mode
+ * @return Crypt_Rijndael
+ * @access public
+ */
+ function Crypt_Rijndael($mode = CRYPT_RIJNDAEL_MODE_CBC)
+ {
+ switch ($mode) {
+ case CRYPT_RIJNDAEL_MODE_ECB:
+ case CRYPT_RIJNDAEL_MODE_CBC:
+ $this->paddable = true;
+ $this->mode = $mode;
+ break;
+ case CRYPT_RIJNDAEL_MODE_CTR:
+ case CRYPT_RIJNDAEL_MODE_CFB:
+ case CRYPT_RIJNDAEL_MODE_OFB:
+ $this->mode = $mode;
+ break;
+ default:
+ $this->paddable = true;
+ $this->mode = CRYPT_RIJNDAEL_MODE_CBC;
+ }
+
+ $t3 = &$this->t3;
+ $t2 = &$this->t2;
+ $t1 = &$this->t1;
+ $t0 = &$this->t0;
+
+ $dt3 = &$this->dt3;
+ $dt2 = &$this->dt2;
+ $dt1 = &$this->dt1;
+ $dt0 = &$this->dt0;
+
+ // according to <http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=19> (section 5.2.1),
+ // precomputed tables can be used in the mixColumns phase. in that example, they're assigned t0...t3, so
+ // those are the names we'll use.
+ $t3 = array(
+ 0x6363A5C6, 0x7C7C84F8, 0x777799EE, 0x7B7B8DF6, 0xF2F20DFF, 0x6B6BBDD6, 0x6F6FB1DE, 0xC5C55491,
+ 0x30305060, 0x01010302, 0x6767A9CE, 0x2B2B7D56, 0xFEFE19E7, 0xD7D762B5, 0xABABE64D, 0x76769AEC,
+ 0xCACA458F, 0x82829D1F, 0xC9C94089, 0x7D7D87FA, 0xFAFA15EF, 0x5959EBB2, 0x4747C98E, 0xF0F00BFB,
+ 0xADADEC41, 0xD4D467B3, 0xA2A2FD5F, 0xAFAFEA45, 0x9C9CBF23, 0xA4A4F753, 0x727296E4, 0xC0C05B9B,
+ 0xB7B7C275, 0xFDFD1CE1, 0x9393AE3D, 0x26266A4C, 0x36365A6C, 0x3F3F417E, 0xF7F702F5, 0xCCCC4F83,
+ 0x34345C68, 0xA5A5F451, 0xE5E534D1, 0xF1F108F9, 0x717193E2, 0xD8D873AB, 0x31315362, 0x15153F2A,
+ 0x04040C08, 0xC7C75295, 0x23236546, 0xC3C35E9D, 0x18182830, 0x9696A137, 0x05050F0A, 0x9A9AB52F,
+ 0x0707090E, 0x12123624, 0x80809B1B, 0xE2E23DDF, 0xEBEB26CD, 0x2727694E, 0xB2B2CD7F, 0x75759FEA,
+ 0x09091B12, 0x83839E1D, 0x2C2C7458, 0x1A1A2E34, 0x1B1B2D36, 0x6E6EB2DC, 0x5A5AEEB4, 0xA0A0FB5B,
+ 0x5252F6A4, 0x3B3B4D76, 0xD6D661B7, 0xB3B3CE7D, 0x29297B52, 0xE3E33EDD, 0x2F2F715E, 0x84849713,
+ 0x5353F5A6, 0xD1D168B9, 0x00000000, 0xEDED2CC1, 0x20206040, 0xFCFC1FE3, 0xB1B1C879, 0x5B5BEDB6,
+ 0x6A6ABED4, 0xCBCB468D, 0xBEBED967, 0x39394B72, 0x4A4ADE94, 0x4C4CD498, 0x5858E8B0, 0xCFCF4A85,
+ 0xD0D06BBB, 0xEFEF2AC5, 0xAAAAE54F, 0xFBFB16ED, 0x4343C586, 0x4D4DD79A, 0x33335566, 0x85859411,
+ 0x4545CF8A, 0xF9F910E9, 0x02020604, 0x7F7F81FE, 0x5050F0A0, 0x3C3C4478, 0x9F9FBA25, 0xA8A8E34B,
+ 0x5151F3A2, 0xA3A3FE5D, 0x4040C080, 0x8F8F8A05, 0x9292AD3F, 0x9D9DBC21, 0x38384870, 0xF5F504F1,
+ 0xBCBCDF63, 0xB6B6C177, 0xDADA75AF, 0x21216342, 0x10103020, 0xFFFF1AE5, 0xF3F30EFD, 0xD2D26DBF,
+ 0xCDCD4C81, 0x0C0C1418, 0x13133526, 0xECEC2FC3, 0x5F5FE1BE, 0x9797A235, 0x4444CC88, 0x1717392E,
+ 0xC4C45793, 0xA7A7F255, 0x7E7E82FC, 0x3D3D477A, 0x6464ACC8, 0x5D5DE7BA, 0x19192B32, 0x737395E6,
+ 0x6060A0C0, 0x81819819, 0x4F4FD19E, 0xDCDC7FA3, 0x22226644, 0x2A2A7E54, 0x9090AB3B, 0x8888830B,
+ 0x4646CA8C, 0xEEEE29C7, 0xB8B8D36B, 0x14143C28, 0xDEDE79A7, 0x5E5EE2BC, 0x0B0B1D16, 0xDBDB76AD,
+ 0xE0E03BDB, 0x32325664, 0x3A3A4E74, 0x0A0A1E14, 0x4949DB92, 0x06060A0C, 0x24246C48, 0x5C5CE4B8,
+ 0xC2C25D9F, 0xD3D36EBD, 0xACACEF43, 0x6262A6C4, 0x9191A839, 0x9595A431, 0xE4E437D3, 0x79798BF2,
+ 0xE7E732D5, 0xC8C8438B, 0x3737596E, 0x6D6DB7DA, 0x8D8D8C01, 0xD5D564B1, 0x4E4ED29C, 0xA9A9E049,
+ 0x6C6CB4D8, 0x5656FAAC, 0xF4F407F3, 0xEAEA25CF, 0x6565AFCA, 0x7A7A8EF4, 0xAEAEE947, 0x08081810,
+ 0xBABAD56F, 0x787888F0, 0x25256F4A, 0x2E2E725C, 0x1C1C2438, 0xA6A6F157, 0xB4B4C773, 0xC6C65197,
+ 0xE8E823CB, 0xDDDD7CA1, 0x74749CE8, 0x1F1F213E, 0x4B4BDD96, 0xBDBDDC61, 0x8B8B860D, 0x8A8A850F,
+ 0x707090E0, 0x3E3E427C, 0xB5B5C471, 0x6666AACC, 0x4848D890, 0x03030506, 0xF6F601F7, 0x0E0E121C,
+ 0x6161A3C2, 0x35355F6A, 0x5757F9AE, 0xB9B9D069, 0x86869117, 0xC1C15899, 0x1D1D273A, 0x9E9EB927,
+ 0xE1E138D9, 0xF8F813EB, 0x9898B32B, 0x11113322, 0x6969BBD2, 0xD9D970A9, 0x8E8E8907, 0x9494A733,
+ 0x9B9BB62D, 0x1E1E223C, 0x87879215, 0xE9E920C9, 0xCECE4987, 0x5555FFAA, 0x28287850, 0xDFDF7AA5,
+ 0x8C8C8F03, 0xA1A1F859, 0x89898009, 0x0D0D171A, 0xBFBFDA65, 0xE6E631D7, 0x4242C684, 0x6868B8D0,
+ 0x4141C382, 0x9999B029, 0x2D2D775A, 0x0F0F111E, 0xB0B0CB7B, 0x5454FCA8, 0xBBBBD66D, 0x16163A2C
+ );
+
+ $dt3 = array(
+ 0xF4A75051, 0x4165537E, 0x17A4C31A, 0x275E963A, 0xAB6BCB3B, 0x9D45F11F, 0xFA58ABAC, 0xE303934B,
+ 0x30FA5520, 0x766DF6AD, 0xCC769188, 0x024C25F5, 0xE5D7FC4F, 0x2ACBD7C5, 0x35448026, 0x62A38FB5,
+ 0xB15A49DE, 0xBA1B6725, 0xEA0E9845, 0xFEC0E15D, 0x2F7502C3, 0x4CF01281, 0x4697A38D, 0xD3F9C66B,
+ 0x8F5FE703, 0x929C9515, 0x6D7AEBBF, 0x5259DA95, 0xBE832DD4, 0x7421D358, 0xE0692949, 0xC9C8448E,
+ 0xC2896A75, 0x8E7978F4, 0x583E6B99, 0xB971DD27, 0xE14FB6BE, 0x88AD17F0, 0x20AC66C9, 0xCE3AB47D,
+ 0xDF4A1863, 0x1A3182E5, 0x51336097, 0x537F4562, 0x6477E0B1, 0x6BAE84BB, 0x81A01CFE, 0x082B94F9,
+ 0x48685870, 0x45FD198F, 0xDE6C8794, 0x7BF8B752, 0x73D323AB, 0x4B02E272, 0x1F8F57E3, 0x55AB2A66,
+ 0xEB2807B2, 0xB5C2032F, 0xC57B9A86, 0x3708A5D3, 0x2887F230, 0xBFA5B223, 0x036ABA02, 0x16825CED,
+ 0xCF1C2B8A, 0x79B492A7, 0x07F2F0F3, 0x69E2A14E, 0xDAF4CD65, 0x05BED506, 0x34621FD1, 0xA6FE8AC4,
+ 0x2E539D34, 0xF355A0A2, 0x8AE13205, 0xF6EB75A4, 0x83EC390B, 0x60EFAA40, 0x719F065E, 0x6E1051BD,
+ 0x218AF93E, 0xDD063D96, 0x3E05AEDD, 0xE6BD464D, 0x548DB591, 0xC45D0571, 0x06D46F04, 0x5015FF60,
+ 0x98FB2419, 0xBDE997D6, 0x4043CC89, 0xD99E7767, 0xE842BDB0, 0x898B8807, 0x195B38E7, 0xC8EEDB79,
+ 0x7C0A47A1, 0x420FE97C, 0x841EC9F8, 0x00000000, 0x80868309, 0x2BED4832, 0x1170AC1E, 0x5A724E6C,
+ 0x0EFFFBFD, 0x8538560F, 0xAED51E3D, 0x2D392736, 0x0FD9640A, 0x5CA62168, 0x5B54D19B, 0x362E3A24,
+ 0x0A67B10C, 0x57E70F93, 0xEE96D2B4, 0x9B919E1B, 0xC0C54F80, 0xDC20A261, 0x774B695A, 0x121A161C,
+ 0x93BA0AE2, 0xA02AE5C0, 0x22E0433C, 0x1B171D12, 0x090D0B0E, 0x8BC7ADF2, 0xB6A8B92D, 0x1EA9C814,
+ 0xF1198557, 0x75074CAF, 0x99DDBBEE, 0x7F60FDA3, 0x01269FF7, 0x72F5BC5C, 0x663BC544, 0xFB7E345B,
+ 0x4329768B, 0x23C6DCCB, 0xEDFC68B6, 0xE4F163B8, 0x31DCCAD7, 0x63851042, 0x97224013, 0xC6112084,
+ 0x4A247D85, 0xBB3DF8D2, 0xF93211AE, 0x29A16DC7, 0x9E2F4B1D, 0xB230F3DC, 0x8652EC0D, 0xC1E3D077,
+ 0xB3166C2B, 0x70B999A9, 0x9448FA11, 0xE9642247, 0xFC8CC4A8, 0xF03F1AA0, 0x7D2CD856, 0x3390EF22,
+ 0x494EC787, 0x38D1C1D9, 0xCAA2FE8C, 0xD40B3698, 0xF581CFA6, 0x7ADE28A5, 0xB78E26DA, 0xADBFA43F,
+ 0x3A9DE42C, 0x78920D50, 0x5FCC9B6A, 0x7E466254, 0x8D13C2F6, 0xD8B8E890, 0x39F75E2E, 0xC3AFF582,
+ 0x5D80BE9F, 0xD0937C69, 0xD52DA96F, 0x2512B3CF, 0xAC993BC8, 0x187DA710, 0x9C636EE8, 0x3BBB7BDB,
+ 0x267809CD, 0x5918F46E, 0x9AB701EC, 0x4F9AA883, 0x956E65E6, 0xFFE67EAA, 0xBCCF0821, 0x15E8E6EF,
+ 0xE79BD9BA, 0x6F36CE4A, 0x9F09D4EA, 0xB07CD629, 0xA4B2AF31, 0x3F23312A, 0xA59430C6, 0xA266C035,
+ 0x4EBC3774, 0x82CAA6FC, 0x90D0B0E0, 0xA7D81533, 0x04984AF1, 0xECDAF741, 0xCD500E7F, 0x91F62F17,
+ 0x4DD68D76, 0xEFB04D43, 0xAA4D54CC, 0x9604DFE4, 0xD1B5E39E, 0x6A881B4C, 0x2C1FB8C1, 0x65517F46,
+ 0x5EEA049D, 0x8C355D01, 0x877473FA, 0x0B412EFB, 0x671D5AB3, 0xDBD25292, 0x105633E9, 0xD647136D,
+ 0xD7618C9A, 0xA10C7A37, 0xF8148E59, 0x133C89EB, 0xA927EECE, 0x61C935B7, 0x1CE5EDE1, 0x47B13C7A,
+ 0xD2DF599C, 0xF2733F55, 0x14CE7918, 0xC737BF73, 0xF7CDEA53, 0xFDAA5B5F, 0x3D6F14DF, 0x44DB8678,
+ 0xAFF381CA, 0x68C43EB9, 0x24342C38, 0xA3405FC2, 0x1DC37216, 0xE2250CBC, 0x3C498B28, 0x0D9541FF,
+ 0xA8017139, 0x0CB3DE08, 0xB4E49CD8, 0x56C19064, 0xCB84617B, 0x32B670D5, 0x6C5C7448, 0xB85742D0
+ );
+
+ for ($i = 0; $i < 256; $i++) {
+ $t2[] = (($t3[$i] << 8) & 0xFFFFFF00) | (($t3[$i] >> 24) & 0x000000FF);
+ $t1[] = (($t3[$i] << 16) & 0xFFFF0000) | (($t3[$i] >> 16) & 0x0000FFFF);
+ $t0[] = (($t3[$i] << 24) & 0xFF000000) | (($t3[$i] >> 8) & 0x00FFFFFF);
+
+ $dt2[] = (($dt3[$i] << 8) & 0xFFFFFF00) | (($dt3[$i] >> 24) & 0x000000FF);
+ $dt1[] = (($dt3[$i] << 16) & 0xFFFF0000) | (($dt3[$i] >> 16) & 0x0000FFFF);
+ $dt0[] = (($dt3[$i] << 24) & 0xFF000000) | (($dt3[$i] >> 8) & 0x00FFFFFF);
+ }
+
+ // sbox for the S-Box substitution
+ $this->sbox = array(
+ 0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5, 0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76,
+ 0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0, 0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0,
+ 0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC, 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15,
+ 0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A, 0x07, 0x12, 0x80, 0xE2, 0xEB, 0x27, 0xB2, 0x75,
+ 0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0, 0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84,
+ 0x53, 0xD1, 0x00, 0xED, 0x20, 0xFC, 0xB1, 0x5B, 0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF,
+ 0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85, 0x45, 0xF9, 0x02, 0x7F, 0x50, 0x3C, 0x9F, 0xA8,
+ 0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5, 0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2,
+ 0xCD, 0x0C, 0x13, 0xEC, 0x5F, 0x97, 0x44, 0x17, 0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73,
+ 0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88, 0x46, 0xEE, 0xB8, 0x14, 0xDE, 0x5E, 0x0B, 0xDB,
+ 0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C, 0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79,
+ 0xE7, 0xC8, 0x37, 0x6D, 0x8D, 0xD5, 0x4E, 0xA9, 0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08,
+ 0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6, 0xE8, 0xDD, 0x74, 0x1F, 0x4B, 0xBD, 0x8B, 0x8A,
+ 0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E, 0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E,
+ 0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94, 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF,
+ 0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68, 0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16
+ );
+
+ // sbox for the inverse S-Box substitution
+ $this->isbox = array(
+ 0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38, 0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB,
+ 0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87, 0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB,
+ 0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D, 0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E,
+ 0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2, 0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25,
+ 0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92,
+ 0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA, 0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84,
+ 0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A, 0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06,
+ 0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02, 0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B,
+ 0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA, 0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73,
+ 0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85, 0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E,
+ 0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89, 0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B,
+ 0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20, 0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4,
+ 0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31, 0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F,
+ 0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D, 0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF,
+ 0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0, 0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61,
+ 0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26, 0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D
+ );
+
+ if (!function_exists('create_function') || !is_callable('create_function')) {
+ $this->use_inline_crypt = false;
+ }
+ }
+
+ /**
+ * Sets the key.
+ *
+ * Keys can be of any length. Rijndael, itself, requires the use of a key that's between 128-bits and 256-bits long and
+ * whose length is a multiple of 32. If the key is less than 256-bits and the key length isn't set, we round the length
+ * up to the closest valid key length, padding $key with null bytes. If the key is more than 256-bits, we trim the
+ * excess bits.
+ *
+ * If the key is not explicitly set, it'll be assumed to be all null bytes.
+ *
+ * @access public
+ * @param String $key
+ */
+ function setKey($key)
+ {
+ $this->key = $key;
+ $this->changed = true;
+ }
+
+ /**
+ * Sets the initialization vector. (optional)
+ *
+ * SetIV is not required when CRYPT_RIJNDAEL_MODE_ECB is being used. If not explictly set, it'll be assumed
+ * to be all zero's.
+ *
+ * @access public
+ * @param String $iv
+ */
+ function setIV($iv)
+ {
+ $this->encryptIV = $this->decryptIV = $this->iv = str_pad(substr($iv, 0, $this->block_size), $this->block_size, chr(0));
+ }
+
+ /**
+ * Sets the key length
+ *
+ * Valid key lengths are 128, 160, 192, 224, and 256. If the length is less than 128, it will be rounded up to
+ * 128. If the length is greater than 128 and invalid, it will be rounded down to the closest valid amount.
+ *
+ * @access public
+ * @param Integer $length
+ */
+ function setKeyLength($length)
+ {
+ $length >>= 5;
+ if ($length > 8) {
+ $length = 8;
+ } else if ($length < 4) {
+ $length = 4;
+ }
+ $this->Nk = $length;
+ $this->key_size = $length << 2;
+
+ $this->explicit_key_length = true;
+ $this->changed = true;
+ }
+
+ /**
+ * Sets the password.
+ *
+ * Depending on what $method is set to, setPassword()'s (optional) parameters are as follows:
+ * {@link http://en.wikipedia.org/wiki/PBKDF2 pbkdf2}:
+ * $hash, $salt, $method
+ * Set $dkLen by calling setKeyLength()
+ *
+ * @param String $password
+ * @param optional String $method
+ * @access public
+ */
+ function setPassword($password, $method = 'pbkdf2')
+ {
+ $key = '';
+
+ switch ($method) {
+ default: // 'pbkdf2'
+ list(, , $hash, $salt, $count) = func_get_args();
+ if (!isset($hash)) {
+ $hash = 'sha1';
+ }
+ // WPA and WPA2 use the SSID as the salt
+ if (!isset($salt)) {
+ $salt = 'phpseclib';
+ }
+ // RFC2898#section-4.2 uses 1,000 iterations by default
+ // WPA and WPA2 use 4,096.
+ if (!isset($count)) {
+ $count = 1000;
+ }
+
+ if (!class_exists('Crypt_Hash')) {
+ require_once('Crypt/Hash.php');
+ }
+
+ $i = 1;
+ while (strlen($key) < $this->key_size) { // $dkLen == $this->key_size
+ //$dk.= $this->_pbkdf($password, $salt, $count, $i++);
+ $hmac = new Crypt_Hash();
+ $hmac->setHash($hash);
+ $hmac->setKey($password);
+ $f = $u = $hmac->hash($salt . pack('N', $i++));
+ for ($j = 2; $j <= $count; $j++) {
+ $u = $hmac->hash($u);
+ $f^= $u;
+ }
+ $key.= $f;
+ }
+ }
+
+ $this->setKey(substr($key, 0, $this->key_size));
+ }
+
+ /**
+ * Sets the block length
+ *
+ * Valid block lengths are 128, 160, 192, 224, and 256. If the length is less than 128, it will be rounded up to
+ * 128. If the length is greater than 128 and invalid, it will be rounded down to the closest valid amount.
+ *
+ * @access public
+ * @param Integer $length
+ */
+ function setBlockLength($length)
+ {
+ $length >>= 5;
+ if ($length > 8) {
+ $length = 8;
+ } else if ($length < 4) {
+ $length = 4;
+ }
+ $this->Nb = $length;
+ $this->block_size = $length << 2;
+ $this->changed = true;
+ }
+
+ /**
+ * Generate CTR XOR encryption key
+ *
+ * Encrypt the output of this and XOR it against the ciphertext / plaintext to get the
+ * plaintext / ciphertext in CTR mode.
+ *
+ * @see Crypt_Rijndael::decrypt()
+ * @see Crypt_Rijndael::encrypt()
+ * @access public
+ * @param Integer $length
+ * @param String $iv
+ */
+ function _generate_xor($length, &$iv)
+ {
+ $xor = '';
+ $block_size = $this->block_size;
+ $num_blocks = floor(($length + ($block_size - 1)) / $block_size);
+ for ($i = 0; $i < $num_blocks; $i++) {
+ $xor.= $iv;
+ for ($j = 4; $j <= $block_size; $j+=4) {
+ $temp = substr($iv, -$j, 4);
+ switch ($temp) {
+ case "\xFF\xFF\xFF\xFF":
+ $iv = substr_replace($iv, "\x00\x00\x00\x00", -$j, 4);
+ break;
+ case "\x7F\xFF\xFF\xFF":
+ $iv = substr_replace($iv, "\x80\x00\x00\x00", -$j, 4);
+ break 2;
+ default:
+ extract(unpack('Ncount', $temp));
+ $iv = substr_replace($iv, pack('N', $count + 1), -$j, 4);
+ break 2;
+ }
+ }
+ }
+
+ return $xor;
+ }
+
+ /**
+ * Encrypts a message.
+ *
+ * $plaintext will be padded with additional bytes such that it's length is a multiple of the block size. Other Rjindael
+ * implementations may or may not pad in the same manner. Other common approaches to padding and the reasons why it's
+ * necessary are discussed in the following
+ * URL:
+ *
+ * {@link http://www.di-mgt.com.au/cryptopad.html http://www.di-mgt.com.au/cryptopad.html}
+ *
+ * An alternative to padding is to, separately, send the length of the file. This is what SSH, in fact, does.
+ * strlen($plaintext) will still need to be a multiple of 8, however, arbitrary values can be added to make it that
+ * length.
+ *
+ * @see Crypt_Rijndael::decrypt()
+ * @access public
+ * @param String $plaintext
+ */
+ function encrypt($plaintext)
+ {
+ if ($this->changed) {
+ $this->_setup();
+ }
+ if ($this->use_inline_crypt) {
+ $inline = $this->inline_crypt;
+ return $inline('encrypt', $this, $plaintext);
+ }
+ if ($this->paddable) {
+ $plaintext = $this->_pad($plaintext);
+ }
+
+ $block_size = $this->block_size;
+ $buffer = &$this->enbuffer;
+ $ciphertext = '';
+ switch ($this->mode) {
+ case CRYPT_RIJNDAEL_MODE_ECB:
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $ciphertext.= $this->_encryptBlock(substr($plaintext, $i, $block_size));
+ }
+ break;
+ case CRYPT_RIJNDAEL_MODE_CBC:
+ $xor = $this->encryptIV;
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $block = substr($plaintext, $i, $block_size);
+ $block = $this->_encryptBlock($block ^ $xor);
+ $xor = $block;
+ $ciphertext.= $block;
+ }
+ if ($this->continuousBuffer) {
+ $this->encryptIV = $xor;
+ }
+ break;
+ case CRYPT_RIJNDAEL_MODE_CTR:
+ $xor = $this->encryptIV;
+ if (strlen($buffer['encrypted'])) {
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $block = substr($plaintext, $i, $block_size);
+ if (strlen($block) > strlen($buffer['encrypted'])) {
+ $buffer['encrypted'].= $this->_encryptBlock($this->_generate_xor($block_size, $xor));
+ }
+ $key = $this->_string_shift($buffer['encrypted'], $block_size);
+ $ciphertext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $block = substr($plaintext, $i, $block_size);
+ $key = $this->_encryptBlock($this->_generate_xor($block_size, $xor));
+ $ciphertext.= $block ^ $key;
+ }
+ }
+ if ($this->continuousBuffer) {
+ $this->encryptIV = $xor;
+ if ($start = strlen($plaintext) % $block_size) {
+ $buffer['encrypted'] = substr($key, $start) . $buffer['encrypted'];
+ }
+ }
+ break;
+ case CRYPT_RIJNDAEL_MODE_CFB:
+ // cfb loosely routines inspired by openssl's:
+ // http://cvs.openssl.org/fileview?f=openssl/crypto/modes/cfb128.c&v=1.3.2.2.2.1
+ if ($this->continuousBuffer) {
+ $iv = &$this->encryptIV;
+ $pos = &$buffer['pos'];
+ } else {
+ $iv = $this->encryptIV;
+ $pos = 0;
+ }
+ $len = strlen($plaintext);
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = $block_size - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
+ $ciphertext = substr($iv, $orig_pos) ^ $plaintext;
+ $iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
+ }
+ while ($len >= $block_size) {
+ $iv = $this->_encryptBlock($iv) ^ substr($plaintext, $i, $block_size);
+ $ciphertext.= $iv;
+ $len-= $block_size;
+ $i+= $block_size;
+ }
+ if ($len) {
+ $iv = $this->_encryptBlock($iv);
+ $block = $iv ^ substr($plaintext, $i);
+ $iv = substr_replace($iv, $block, 0, $len);
+ $ciphertext.= $block;
+ $pos = $len;
+ }
+ break;
+ case CRYPT_RIJNDAEL_MODE_OFB:
+ $xor = $this->encryptIV;
+ if (strlen($buffer['xor'])) {
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $block = substr($plaintext, $i, $block_size);
+ if (strlen($block) > strlen($buffer['xor'])) {
+ $xor = $this->_encryptBlock($xor);
+ $buffer['xor'].= $xor;
+ }
+ $key = $this->_string_shift($buffer['xor'], $block_size);
+ $ciphertext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $xor = $this->_encryptBlock($xor);
+ $ciphertext.= substr($plaintext, $i, $block_size) ^ $xor;
+ }
+ $key = $xor;
+ }
+ if ($this->continuousBuffer) {
+ $this->encryptIV = $xor;
+ if ($start = strlen($plaintext) % $block_size) {
+ $buffer['xor'] = substr($key, $start) . $buffer['xor'];
+ }
+ }
+ }
+
+ return $ciphertext;
+ }
+
+ /**
+ * Decrypts a message.
+ *
+ * If strlen($ciphertext) is not a multiple of the block size, null bytes will be added to the end of the string until
+ * it is.
+ *
+ * @see Crypt_Rijndael::encrypt()
+ * @access public
+ * @param String $ciphertext
+ */
+ function decrypt($ciphertext)
+ {
+ if ($this->changed) {
+ $this->_setup();
+ }
+ if ($this->use_inline_crypt) {
+ $inline = $this->inline_crypt;
+ return $inline('decrypt', $this, $ciphertext);
+ }
+ if ($this->paddable) {
+ // we pad with chr(0) since that's what mcrypt_generic does. to quote from http://php.net/function.mcrypt-generic :
+ // "The data is padded with "\0" to make sure the length of the data is n * blocksize."
+ $ciphertext = str_pad($ciphertext, strlen($ciphertext) + ($this->block_size - strlen($ciphertext) % $this->block_size) % $this->block_size, chr(0));
+ }
+
+ $block_size = $this->block_size;
+ $buffer = &$this->debuffer;
+ $plaintext = '';
+ switch ($this->mode) {
+ case CRYPT_RIJNDAEL_MODE_ECB:
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $plaintext.= $this->_decryptBlock(substr($ciphertext, $i, $block_size));
+ }
+ break;
+ case CRYPT_RIJNDAEL_MODE_CBC:
+ $xor = $this->decryptIV;
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $block = substr($ciphertext, $i, $block_size);
+ $plaintext.= $this->_decryptBlock($block) ^ $xor;
+ $xor = $block;
+ }
+ if ($this->continuousBuffer) {
+ $this->decryptIV = $xor;
+ }
+ break;
+ case CRYPT_RIJNDAEL_MODE_CTR:
+ $xor = $this->decryptIV;
+ if (strlen($buffer['ciphertext'])) {
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $block = substr($ciphertext, $i, $block_size);
+ if (strlen($block) > strlen($buffer['ciphertext'])) {
+ $buffer['ciphertext'].= $this->_encryptBlock($this->_generate_xor($block_size, $xor));
+ }
+ $key = $this->_string_shift($buffer['ciphertext'], $block_size);
+ $plaintext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $block = substr($ciphertext, $i, $block_size);
+ $key = $this->_encryptBlock($this->_generate_xor($block_size, $xor));
+ $plaintext.= $block ^ $key;
+ }
+ }
+ if ($this->continuousBuffer) {
+ $this->decryptIV = $xor;
+ if ($start = strlen($ciphertext) % $block_size) {
+ $buffer['ciphertext'] = substr($key, $start) . $buffer['ciphertext'];
+ }
+ }
+ break;
+ case CRYPT_RIJNDAEL_MODE_CFB:
+ if ($this->continuousBuffer) {
+ $iv = &$this->decryptIV;
+ $pos = &$buffer['pos'];
+ } else {
+ $iv = $this->decryptIV;
+ $pos = 0;
+ }
+ $len = strlen($ciphertext);
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = $block_size - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
+ $plaintext = substr($iv, $orig_pos) ^ $ciphertext;
+ $iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
+ }
+ while ($len >= $block_size) {
+ $iv = $this->_encryptBlock($iv);
+ $cb = substr($ciphertext, $i, $block_size);
+ $plaintext.= $iv ^ $cb;
+ $iv = $cb;
+ $len-= $block_size;
+ $i+= $block_size;
+ }
+ if ($len) {
+ $iv = $this->_encryptBlock($iv);
+ $plaintext.= $iv ^ substr($ciphertext, $i);
+ $iv = substr_replace($iv, substr($ciphertext, $i), 0, $len);
+ $pos = $len;
+ }
+ break;
+ case CRYPT_RIJNDAEL_MODE_OFB:
+ $xor = $this->decryptIV;
+ if (strlen($buffer['xor'])) {
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $block = substr($ciphertext, $i, $block_size);
+ if (strlen($block) > strlen($buffer['xor'])) {
+ $xor = $this->_encryptBlock($xor);
+ $buffer['xor'].= $xor;
+ }
+ $key = $this->_string_shift($buffer['xor'], $block_size);
+ $plaintext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $xor = $this->_encryptBlock($xor);
+ $plaintext.= substr($ciphertext, $i, $block_size) ^ $xor;
+ }
+ $key = $xor;
+ }
+ if ($this->continuousBuffer) {
+ $this->decryptIV = $xor;
+ if ($start = strlen($ciphertext) % $block_size) {
+ $buffer['xor'] = substr($key, $start) . $buffer['xor'];
+ }
+ }
+ }
+
+ return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
+ }
+
+ /**
+ * Encrypts a block
+ *
+ * @access private
+ * @param String $in
+ * @return String
+ */
+ function _encryptBlock($in)
+ {
+ $state = array();
+ $words = unpack('N*word', $in);
+
+ $w = $this->w;
+ $t0 = $this->t0;
+ $t1 = $this->t1;
+ $t2 = $this->t2;
+ $t3 = $this->t3;
+ $Nb = $this->Nb;
+ $Nr = $this->Nr;
+ $c = $this->c;
+
+ // addRoundKey
+ $i = -1;
+ foreach ($words as $word) {
+ $state[] = $word ^ $w[0][++$i];
+ }
+
+ // fips-197.pdf#page=19, "Figure 5. Pseudo Code for the Cipher", states that this loop has four components -
+ // subBytes, shiftRows, mixColumns, and addRoundKey. fips-197.pdf#page=30, "Implementation Suggestions Regarding
+ // Various Platforms" suggests that performs enhanced implementations are described in Rijndael-ammended.pdf.
+ // Rijndael-ammended.pdf#page=20, "Implementation aspects / 32-bit processor", discusses such an optimization.
+ // Unfortunately, the description given there is not quite correct. Per aes.spec.v316.pdf#page=19 [1],
+ // equation (7.4.7) is supposed to use addition instead of subtraction, so we'll do that here, as well.
+
+ // [1] http://fp.gladman.plus.com/cryptography_technology/rijndael/aes.spec.v316.pdf
+ $temp = array();
+ for ($round = 1; $round < $Nr; ++$round) {
+ $i = 0; // $c[0] == 0
+ $j = $c[1];
+ $k = $c[2];
+ $l = $c[3];
+
+ while ($i < $Nb) {
+ $temp[$i] = $t0[$state[$i] >> 24 & 0x000000FF] ^
+ $t1[$state[$j] >> 16 & 0x000000FF] ^
+ $t2[$state[$k] >> 8 & 0x000000FF] ^
+ $t3[$state[$l] & 0x000000FF] ^
+ $w[$round][$i];
+ ++$i;
+ $j = ($j + 1) % $Nb;
+ $k = ($k + 1) % $Nb;
+ $l = ($l + 1) % $Nb;
+ }
+ $state = $temp;
+ }
+
+ // subWord
+ for ($i = 0; $i < $Nb; ++$i) {
+ $state[$i] = $this->_subWord($state[$i]);
+ }
+
+ // shiftRows + addRoundKey
+ $i = 0; // $c[0] == 0
+ $j = $c[1];
+ $k = $c[2];
+ $l = $c[3];
+ while ($i < $Nb) {
+ $temp[$i] = ($state[$i] & 0xFF000000) ^
+ ($state[$j] & 0x00FF0000) ^
+ ($state[$k] & 0x0000FF00) ^
+ ($state[$l] & 0x000000FF) ^
+ $w[$Nr][$i];
+ ++$i;
+ $j = ($j + 1) % $Nb;
+ $k = ($k + 1) % $Nb;
+ $l = ($l + 1) % $Nb;
+ }
+
+ // 100% ugly switch/case code... but ~5% faster ("smart code" below commented out)
+ switch ($Nb) {
+ case 8:
+ return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6], $temp[7]);
+ case 7:
+ return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6]);
+ case 6:
+ return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5]);
+ case 5:
+ return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4]);
+ default:
+ return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3]);
+ }
+ /*
+ $state = $temp;
+
+ array_unshift($state, 'N*');
+
+ return call_user_func_array('pack', $state);
+ */
+ }
+
+ /**
+ * Decrypts a block
+ *
+ * @access private
+ * @param String $in
+ * @return String
+ */
+ function _decryptBlock($in)
+ {
+ $state = array();
+ $words = unpack('N*word', $in);
+
+ $dw = $this->dw;
+ $dt0 = $this->dt0;
+ $dt1 = $this->dt1;
+ $dt2 = $this->dt2;
+ $dt3 = $this->dt3;
+ $Nb = $this->Nb;
+ $Nr = $this->Nr;
+ $c = $this->c;
+
+ // addRoundKey
+ $i = -1;
+ foreach ($words as $word) {
+ $state[] = $word ^ $dw[$Nr][++$i];
+ }
+
+ $temp = array();
+ for ($round = $Nr - 1; $round > 0; --$round) {
+ $i = 0; // $c[0] == 0
+ $j = $Nb - $c[1];
+ $k = $Nb - $c[2];
+ $l = $Nb - $c[3];
+
+ while ($i < $Nb) {
+ $temp[$i] = $dt0[$state[$i] >> 24 & 0x000000FF] ^
+ $dt1[$state[$j] >> 16 & 0x000000FF] ^
+ $dt2[$state[$k] >> 8 & 0x000000FF] ^
+ $dt3[$state[$l] & 0x000000FF] ^
+ $dw[$round][$i];
+ ++$i;
+ $j = ($j + 1) % $Nb;
+ $k = ($k + 1) % $Nb;
+ $l = ($l + 1) % $Nb;
+ }
+ $state = $temp;
+ }
+
+ // invShiftRows + invSubWord + addRoundKey
+ $i = 0; // $c[0] == 0
+ $j = $Nb - $c[1];
+ $k = $Nb - $c[2];
+ $l = $Nb - $c[3];
+
+ while ($i < $Nb) {
+ $temp[$i] = $dw[0][$i] ^
+ $this->_invSubWord(($state[$i] & 0xFF000000) |
+ ($state[$j] & 0x00FF0000) |
+ ($state[$k] & 0x0000FF00) |
+ ($state[$l] & 0x000000FF));
+ ++$i;
+ $j = ($j + 1) % $Nb;
+ $k = ($k + 1) % $Nb;
+ $l = ($l + 1) % $Nb;
+ }
+
+ switch ($Nb) {
+ case 8:
+ return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6], $temp[7]);
+ case 7:
+ return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5], $temp[6]);
+ case 6:
+ return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4], $temp[5]);
+ case 5:
+ return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3], $temp[4]);
+ default:
+ return pack('N*', $temp[0], $temp[1], $temp[2], $temp[3]);
+ }
+ /*
+ $state = $temp;
+
+ array_unshift($state, 'N*');
+
+ return call_user_func_array('pack', $state);
+ */
+ }
+
+ /**
+ * Setup Rijndael
+ *
+ * Validates all the variables and calculates $Nr - the number of rounds that need to be performed - and $w - the key
+ * key schedule.
+ *
+ * @access private
+ */
+ function _setup()
+ {
+ // Each number in $rcon is equal to the previous number multiplied by two in Rijndael's finite field.
+ // See http://en.wikipedia.org/wiki/Finite_field_arithmetic#Multiplicative_inverse
+ static $rcon = array(0,
+ 0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000,
+ 0x20000000, 0x40000000, 0x80000000, 0x1B000000, 0x36000000,
+ 0x6C000000, 0xD8000000, 0xAB000000, 0x4D000000, 0x9A000000,
+ 0x2F000000, 0x5E000000, 0xBC000000, 0x63000000, 0xC6000000,
+ 0x97000000, 0x35000000, 0x6A000000, 0xD4000000, 0xB3000000,
+ 0x7D000000, 0xFA000000, 0xEF000000, 0xC5000000, 0x91000000
+ );
+
+ if (!$this->explicit_key_length) {
+ // we do >> 2, here, and not >> 5, as we do above, since strlen($this->key) tells us the number of bytes - not bits
+ $length = strlen($this->key) >> 2;
+ if ($length > 8) {
+ $length = 8;
+ } else if ($length < 4) {
+ $length = 4;
+ }
+ $this->Nk = $length;
+ $this->key_size = $length << 2;
+ }
+
+ $this->key = str_pad(substr($this->key, 0, $this->key_size), $this->key_size, chr(0));
+ $this->encryptIV = $this->decryptIV = $this->iv = str_pad(substr($this->iv, 0, $this->block_size), $this->block_size, chr(0));
+
+ // see Rijndael-ammended.pdf#page=44
+ $this->Nr = max($this->Nk, $this->Nb) + 6;
+
+ // shift offsets for Nb = 5, 7 are defined in Rijndael-ammended.pdf#page=44,
+ // "Table 8: Shift offsets in Shiftrow for the alternative block lengths"
+ // shift offsets for Nb = 4, 6, 8 are defined in Rijndael-ammended.pdf#page=14,
+ // "Table 2: Shift offsets for different block lengths"
+ switch ($this->Nb) {
+ case 4:
+ case 5:
+ case 6:
+ $this->c = array(0, 1, 2, 3);
+ break;
+ case 7:
+ $this->c = array(0, 1, 2, 4);
+ break;
+ case 8:
+ $this->c = array(0, 1, 3, 4);
+ }
+
+ $key = $this->key;
+
+ $w = array_values(unpack('N*words', $key));
+
+ $length = $this->Nb * ($this->Nr + 1);
+ for ($i = $this->Nk; $i < $length; $i++) {
+ $temp = $w[$i - 1];
+ if ($i % $this->Nk == 0) {
+ // according to <http://php.net/language.types.integer>, "the size of an integer is platform-dependent".
+ // on a 32-bit machine, it's 32-bits, and on a 64-bit machine, it's 64-bits. on a 32-bit machine,
+ // 0xFFFFFFFF << 8 == 0xFFFFFF00, but on a 64-bit machine, it equals 0xFFFFFFFF00. as such, doing 'and'
+ // with 0xFFFFFFFF (or 0xFFFFFF00) on a 32-bit machine is unnecessary, but on a 64-bit machine, it is.
+ $temp = (($temp << 8) & 0xFFFFFF00) | (($temp >> 24) & 0x000000FF); // rotWord
+ $temp = $this->_subWord($temp) ^ $rcon[$i / $this->Nk];
+ } else if ($this->Nk > 6 && $i % $this->Nk == 4) {
+ $temp = $this->_subWord($temp);
+ }
+ $w[$i] = $w[$i - $this->Nk] ^ $temp;
+ }
+
+ // convert the key schedule from a vector of $Nb * ($Nr + 1) length to a matrix with $Nr + 1 rows and $Nb columns
+ // and generate the inverse key schedule. more specifically,
+ // according to <http://csrc.nist.gov/archive/aes/rijndael/Rijndael-ammended.pdf#page=23> (section 5.3.3),
+ // "The key expansion for the Inverse Cipher is defined as follows:
+ // 1. Apply the Key Expansion.
+ // 2. Apply InvMixColumn to all Round Keys except the first and the last one."
+ // also, see fips-197.pdf#page=27, "5.3.5 Equivalent Inverse Cipher"
+ $temp = $this->w = $this->dw = array();
+ for ($i = $row = $col = 0; $i < $length; $i++, $col++) {
+ if ($col == $this->Nb) {
+ if ($row == 0) {
+ $this->dw[0] = $this->w[0];
+ } else {
+ // subWord + invMixColumn + invSubWord = invMixColumn
+ $j = 0;
+ while ($j < $this->Nb) {
+ $dw = $this->_subWord($this->w[$row][$j]);
+ $temp[$j] = $this->dt0[$dw >> 24 & 0x000000FF] ^
+ $this->dt1[$dw >> 16 & 0x000000FF] ^
+ $this->dt2[$dw >> 8 & 0x000000FF] ^
+ $this->dt3[$dw & 0x000000FF];
+ $j++;
+ }
+ $this->dw[$row] = $temp;
+ }
+
+ $col = 0;
+ $row++;
+ }
+ $this->w[$row][$col] = $w[$i];
+ }
+
+ $this->dw[$row] = $this->w[$row];
+
+ // In case of $this->use_inline_crypt === true we have to use 1-dim key arrays (both ascending)
+ if ($this->use_inline_crypt) {
+ $this->dw = array_reverse($this->dw);
+ $w = array_pop($this->w);
+ $dw = array_pop($this->dw);
+ foreach ($this->w as $r => $wr) {
+ foreach ($wr as $c => $wc) {
+ $w[] = $wc;
+ $dw[] = $this->dw[$r][$c];
+ }
+ }
+ $this->w = $w;
+ $this->dw = $dw;
+
+ $this->inline_crypt_setup();
+ }
+
+ $this->changed = false;
+ }
+
+ /**
+ * Performs S-Box substitutions
+ *
+ * @access private
+ */
+ function _subWord($word)
+ {
+ $sbox = $this->sbox;
+
+ return $sbox[$word & 0x000000FF] |
+ ($sbox[$word >> 8 & 0x000000FF] << 8) |
+ ($sbox[$word >> 16 & 0x000000FF] << 16) |
+ ($sbox[$word >> 24 & 0x000000FF] << 24);
+ }
+
+ /**
+ * Performs inverse S-Box substitutions
+ *
+ * @access private
+ */
+ function _invSubWord($word)
+ {
+ $isbox = $this->isbox;
+
+ return $isbox[$word & 0x000000FF] |
+ ($isbox[$word >> 8 & 0x000000FF] << 8) |
+ ($isbox[$word >> 16 & 0x000000FF] << 16) |
+ ($isbox[$word >> 24 & 0x000000FF] << 24);
+ }
+
+ /**
+ * Pad "packets".
+ *
+ * Rijndael works by encrypting between sixteen and thirty-two bytes at a time, provided that number is also a multiple
+ * of four. If you ever need to encrypt or decrypt something that isn't of the proper length, it becomes necessary to
+ * pad the input so that it is of the proper length.
+ *
+ * Padding is enabled by default. Sometimes, however, it is undesirable to pad strings. Such is the case in SSH,
+ * where "packets" are padded with random bytes before being encrypted. Unpad these packets and you risk stripping
+ * away characters that shouldn't be stripped away. (SSH knows how many bytes are added because the length is
+ * transmitted separately)
+ *
+ * @see Crypt_Rijndael::disablePadding()
+ * @access public
+ */
+ function enablePadding()
+ {
+ $this->padding = true;
+ }
+
+ /**
+ * Do not pad packets.
+ *
+ * @see Crypt_Rijndael::enablePadding()
+ * @access public
+ */
+ function disablePadding()
+ {
+ $this->padding = false;
+ }
+
+ /**
+ * Pads a string
+ *
+ * Pads a string using the RSA PKCS padding standards so that its length is a multiple of the blocksize.
+ * $block_size - (strlen($text) % $block_size) bytes are added, each of which is equal to
+ * chr($block_size - (strlen($text) % $block_size)
+ *
+ * If padding is disabled and $text is not a multiple of the blocksize, the string will be padded regardless
+ * and padding will, hence forth, be enabled.
+ *
+ * @see Crypt_Rijndael::_unpad()
+ * @access private
+ */
+ function _pad($text)
+ {
+ $length = strlen($text);
+
+ if (!$this->padding) {
+ if ($length % $this->block_size == 0) {
+ return $text;
+ } else {
+ user_error("The plaintext's length ($length) is not a multiple of the block size ({$this->block_size})");
+ $this->padding = true;
+ }
+ }
+
+ $pad = $this->block_size - ($length % $this->block_size);
+
+ return str_pad($text, $length + $pad, chr($pad));
+ }
+
+ /**
+ * Unpads a string.
+ *
+ * If padding is enabled and the reported padding length is invalid the encryption key will be assumed to be wrong
+ * and false will be returned.
+ *
+ * @see Crypt_Rijndael::_pad()
+ * @access private
+ */
+ function _unpad($text)
+ {
+ if (!$this->padding) {
+ return $text;
+ }
+
+ $length = ord($text[strlen($text) - 1]);
+
+ if (!$length || $length > $this->block_size) {
+ return false;
+ }
+
+ return substr($text, 0, -$length);
+ }
+
+ /**
+ * Treat consecutive "packets" as if they are a continuous buffer.
+ *
+ * Say you have a 32-byte plaintext $plaintext. Using the default behavior, the two following code snippets
+ * will yield different outputs:
+ *
+ * <code>
+ * echo $rijndael->encrypt(substr($plaintext, 0, 16));
+ * echo $rijndael->encrypt(substr($plaintext, 16, 16));
+ * </code>
+ * <code>
+ * echo $rijndael->encrypt($plaintext);
+ * </code>
+ *
+ * The solution is to enable the continuous buffer. Although this will resolve the above discrepancy, it creates
+ * another, as demonstrated with the following:
+ *
+ * <code>
+ * $rijndael->encrypt(substr($plaintext, 0, 16));
+ * echo $rijndael->decrypt($des->encrypt(substr($plaintext, 16, 16)));
+ * </code>
+ * <code>
+ * echo $rijndael->decrypt($des->encrypt(substr($plaintext, 16, 16)));
+ * </code>
+ *
+ * With the continuous buffer disabled, these would yield the same output. With it enabled, they yield different
+ * outputs. The reason is due to the fact that the initialization vector's change after every encryption /
+ * decryption round when the continuous buffer is enabled. When it's disabled, they remain constant.
+ *
+ * Put another way, when the continuous buffer is enabled, the state of the Crypt_Rijndael() object changes after each
+ * encryption / decryption round, whereas otherwise, it'd remain constant. For this reason, it's recommended that
+ * continuous buffers not be used. They do offer better security and are, in fact, sometimes required (SSH uses them),
+ * however, they are also less intuitive and more likely to cause you problems.
+ *
+ * @see Crypt_Rijndael::disableContinuousBuffer()
+ * @access public
+ */
+ function enableContinuousBuffer()
+ {
+ $this->continuousBuffer = true;
+ }
+
+ /**
+ * Treat consecutive packets as if they are a discontinuous buffer.
+ *
+ * The default behavior.
+ *
+ * @see Crypt_Rijndael::enableContinuousBuffer()
+ * @access public
+ */
+ function disableContinuousBuffer()
+ {
+ $this->continuousBuffer = false;
+ $this->encryptIV = $this->iv;
+ $this->decryptIV = $this->iv;
+ $this->enbuffer = array('encrypted' => '', 'xor' => '', 'pos' => 0);
+ $this->debuffer = array('ciphertext' => '', 'xor' => '', 'pos' => 0);
+ }
+
+ /**
+ * String Shift
+ *
+ * Inspired by array_shift
+ *
+ * @param String $string
+ * @param optional Integer $index
+ * @return String
+ * @access private
+ */
+ function _string_shift(&$string, $index = 1)
+ {
+ $substr = substr($string, 0, $index);
+ $string = substr($string, $index);
+ return $substr;
+ }
+
+ /**
+ * Creates performance-optimized function for de/encrypt(), storing it in $this->inline_crypt
+ *
+ * @see Crypt_Rijndael::encrypt()
+ * @see Crypt_Rijndael::decrypt()
+ * @access private
+ */
+ function inline_crypt_setup()
+ {
+ // Note: inline_crypt_setup() will be called only if $this->changed === true
+ // So here we are'nt under the same heavy timing-stress as we are in _de/encryptBlock() or de/encrypt().
+ // However...the here generated function- $code, stored as php callback in $this->inline_crypt, must work as fast as even possible.
+
+ $lambda_functions =& Crypt_Rijndael::get_lambda_functions();
+ $block_size = $this->block_size;
+ $mode = $this->mode;
+
+ // The first 5 generated $lambda_functions will use the key-words hardcoded for better performance.
+ // For memory reason we limit those ultra-optimized function code to 5.
+ // After that, we use pure (extracted) integer vars for the key-words which is faster than accessing them via array.
+ if (count($lambda_functions) < 5) {
+ $w = $this->w;
+ $dw = $this->dw;
+ $init_encryptBlock = '';
+ $init_decryptBlock = '';
+ } else {
+ for ($i = 0, $cw = count($this->w); $i < $cw; ++$i) {
+ $w[] = '$w_'.$i;
+ $dw[] = '$dw_'.$i;
+ }
+ $init_encryptBlock = 'extract($self->w, EXTR_PREFIX_ALL, "w");';
+ $init_decryptBlock = 'extract($self->dw, EXTR_PREFIX_ALL, "dw");';
+ }
+
+ $code_hash = md5("$mode, $block_size, " . implode(',', $w));
+
+ if (!isset($lambda_functions[$code_hash])) {
+ $Nr = $this->Nr;
+ $Nb = $this->Nb;
+ $c = $this->c;
+
+ // Generating encrypt code:
+ $init_encryptBlock.= '
+ $t0 = $self->t0;
+ $t1 = $self->t1;
+ $t2 = $self->t2;
+ $t3 = $self->t3;
+ $sbox = $self->sbox;';
+
+ $s = 'e';
+ $e = 's';
+ $wc = $Nb - 1;
+
+ // Preround: addRoundKey
+ $_encryptBlock = '$in = unpack("N*", $in);'."\n";
+ for ($i = 0; $i < $Nb; ++$i) {
+ $_encryptBlock .= '$s'.$i.' = $in['.($i + 1).'] ^ '.$w[++$wc].";\n";
+ }
+
+ // Mainrounds: shiftRows + subWord + mixColumns + addRoundKey
+ for ($round = 1; $round < $Nr; ++$round) {
+ list($s, $e) = array($e, $s);
+ for ($i = 0; $i < $Nb; ++$i) {
+ $_encryptBlock.=
+ '$'.$e.$i.' =
+ $t0[($'.$s.$i .' >> 24) & 0xff] ^
+ $t1[($'.$s.(($i + $c[1]) % $Nb).' >> 16) & 0xff] ^
+ $t2[($'.$s.(($i + $c[2]) % $Nb).' >> 8) & 0xff] ^
+ $t3[ $'.$s.(($i + $c[3]) % $Nb).' & 0xff] ^
+ '.$w[++$wc].";\n";
+ }
+ }
+
+ // Finalround: subWord + shiftRows + addRoundKey
+ for ($i = 0; $i < $Nb; ++$i) {
+ $_encryptBlock.=
+ '$'.$e.$i.' =
+ $sbox[ $'.$e.$i.' & 0xff] |
+ ($sbox[($'.$e.$i.' >> 8) & 0xff] << 8) |
+ ($sbox[($'.$e.$i.' >> 16) & 0xff] << 16) |
+ ($sbox[($'.$e.$i.' >> 24) & 0xff] << 24);'."\n";
+ }
+ $_encryptBlock .= '$in = pack("N*"'."\n";
+ for ($i = 0; $i < $Nb; ++$i) {
+ $_encryptBlock.= ',
+ ($'.$e.$i .' & 0xFF000000) ^
+ ($'.$e.(($i + $c[1]) % $Nb).' & 0x00FF0000) ^
+ ($'.$e.(($i + $c[2]) % $Nb).' & 0x0000FF00) ^
+ ($'.$e.(($i + $c[3]) % $Nb).' & 0x000000FF) ^
+ '.$w[$i]."\n";
+ }
+ $_encryptBlock .= ');';
+
+ // Generating decrypt code:
+ $init_decryptBlock.= '
+ $dt0 = $self->dt0;
+ $dt1 = $self->dt1;
+ $dt2 = $self->dt2;
+ $dt3 = $self->dt3;
+ $isbox = $self->isbox;';
+
+ $s = 'e';
+ $e = 's';
+ $wc = $Nb - 1;
+
+ // Preround: addRoundKey
+ $_decryptBlock = '$in = unpack("N*", $in);'."\n";
+ for ($i = 0; $i < $Nb; ++$i) {
+ $_decryptBlock .= '$s'.$i.' = $in['.($i + 1).'] ^ '.$dw[++$wc].';'."\n";
+ }
+
+ // Mainrounds: shiftRows + subWord + mixColumns + addRoundKey
+ for ($round = 1; $round < $Nr; ++$round) {
+ list($s, $e) = array($e, $s);
+ for ($i = 0; $i < $Nb; ++$i) {
+ $_decryptBlock.=
+ '$'.$e.$i.' =
+ $dt0[($'.$s.$i .' >> 24) & 0xff] ^
+ $dt1[($'.$s.(($Nb + $i - $c[1]) % $Nb).' >> 16) & 0xff] ^
+ $dt2[($'.$s.(($Nb + $i - $c[2]) % $Nb).' >> 8) & 0xff] ^
+ $dt3[ $'.$s.(($Nb + $i - $c[3]) % $Nb).' & 0xff] ^
+ '.$dw[++$wc].";\n";
+ }
+ }
+
+ // Finalround: subWord + shiftRows + addRoundKey
+ for ($i = 0; $i < $Nb; ++$i) {
+ $_decryptBlock.=
+ '$'.$e.$i.' =
+ $isbox[ $'.$e.$i.' & 0xff] |
+ ($isbox[($'.$e.$i.' >> 8) & 0xff] << 8) |
+ ($isbox[($'.$e.$i.' >> 16) & 0xff] << 16) |
+ ($isbox[($'.$e.$i.' >> 24) & 0xff] << 24);'."\n";
+ }
+ $_decryptBlock .= '$in = pack("N*"'."\n";
+ for ($i = 0; $i < $Nb; ++$i) {
+ $_decryptBlock.= ',
+ ($'.$e.$i. ' & 0xFF000000) ^
+ ($'.$e.(($Nb + $i - $c[1]) % $Nb).' & 0x00FF0000) ^
+ ($'.$e.(($Nb + $i - $c[2]) % $Nb).' & 0x0000FF00) ^
+ ($'.$e.(($Nb + $i - $c[3]) % $Nb).' & 0x000000FF) ^
+ '.$dw[$i]."\n";
+ }
+ $_decryptBlock .= ');';
+
+ // Generating mode of operation code:
+ switch ($mode) {
+ case CRYPT_RIJNDAEL_MODE_ECB:
+ $encrypt = $init_encryptBlock . '
+ $ciphertext = "";
+ $text = $self->_pad($text);
+ $plaintext_len = strlen($text);
+
+ for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
+ $in = substr($text, $i, '.$block_size.');
+ '.$_encryptBlock.'
+ $ciphertext.= $in;
+ }
+
+ return $ciphertext;
+ ';
+
+ $decrypt = $init_decryptBlock . '
+ $plaintext = "";
+ $text = str_pad($text, strlen($text) + ('.$block_size.' - strlen($text) % '.$block_size.') % '.$block_size.', chr(0));
+ $ciphertext_len = strlen($text);
+
+ for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
+ $in = substr($text, $i, '.$block_size.');
+ '.$_decryptBlock.'
+ $plaintext.= $in;
+ }
+
+ return $self->_unpad($plaintext);
+ ';
+ break;
+ case CRYPT_RIJNDAEL_MODE_CBC:
+ $encrypt = $init_encryptBlock . '
+ $ciphertext = "";
+ $text = $self->_pad($text);
+ $plaintext_len = strlen($text);
+
+ $in = $self->encryptIV;
+
+ for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
+ $in = substr($text, $i, '.$block_size.') ^ $in;
+ '.$_encryptBlock.'
+ $ciphertext.= $in;
+ }
+
+ if ($self->continuousBuffer) {
+ $self->encryptIV = $in;
+ }
+
+ return $ciphertext;
+ ';
+
+ $decrypt = $init_decryptBlock . '
+ $plaintext = "";
+ $text = str_pad($text, strlen($text) + ('.$block_size.' - strlen($text) % '.$block_size.') % '.$block_size.', chr(0));
+ $ciphertext_len = strlen($text);
+
+ $iv = $self->decryptIV;
+
+ for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
+ $in = $block = substr($text, $i, '.$block_size.');
+ '.$_decryptBlock.'
+ $plaintext.= $in ^ $iv;
+ $iv = $block;
+ }
+
+ if ($self->continuousBuffer) {
+ $self->decryptIV = $iv;
+ }
+
+ return $self->_unpad($plaintext);
+ ';
+ break;
+ case CRYPT_RIJNDAEL_MODE_CTR:
+ $encrypt = $init_encryptBlock . '
+ $ciphertext = "";
+ $plaintext_len = strlen($text);
+ $xor = $self->encryptIV;
+ $buffer = &$self->enbuffer;
+
+ if (strlen($buffer["encrypted"])) {
+ for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
+ $block = substr($text, $i, '.$block_size.');
+ if (strlen($block) > strlen($buffer["encrypted"])) {
+ $in = $self->_generate_xor('.$block_size.', $xor);
+ '.$_encryptBlock.'
+ $buffer["encrypted"].= $in;
+ }
+ $key = $self->_string_shift($buffer["encrypted"], '.$block_size.');
+ $ciphertext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
+ $block = substr($text, $i, '.$block_size.');
+ $in = $self->_generate_xor('.$block_size.', $xor);
+ '.$_encryptBlock.'
+ $key = $in;
+ $ciphertext.= $block ^ $key;
+ }
+ }
+ if ($self->continuousBuffer) {
+ $self->encryptIV = $xor;
+ if ($start = $plaintext_len % '.$block_size.') {
+ $buffer["encrypted"] = substr($key, $start) . $buffer["encrypted"];
+ }
+ }
+
+ return $ciphertext;
+ ';
+
+ $decrypt = $init_encryptBlock . '
+ $plaintext = "";
+ $ciphertext_len = strlen($text);
+ $xor = $self->decryptIV;
+ $buffer = &$self->debuffer;
+
+ if (strlen($buffer["ciphertext"])) {
+ for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
+ $block = substr($text, $i, '.$block_size.');
+ if (strlen($block) > strlen($buffer["ciphertext"])) {
+ $in = $self->_generate_xor('.$block_size.', $xor);
+ '.$_encryptBlock.'
+ $buffer["ciphertext"].= $in;
+ }
+ $key = $self->_string_shift($buffer["ciphertext"], '.$block_size.');
+ $plaintext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
+ $block = substr($text, $i, '.$block_size.');
+ $in = $self->_generate_xor('.$block_size.', $xor);
+ '.$_encryptBlock.'
+ $key = $in;
+ $plaintext.= $block ^ $key;
+ }
+ }
+ if ($self->continuousBuffer) {
+ $self->decryptIV = $xor;
+ if ($start = $ciphertext_len % '.$block_size.') {
+ $buffer["ciphertext"] = substr($key, $start) . $buffer["ciphertext"];
+ }
+ }
+
+ return $plaintext;
+ ';
+ break;
+ case CRYPT_RIJNDAEL_MODE_CFB:
+ $encrypt = $init_encryptBlock . '
+ $ciphertext = "";
+ $buffer = &$self->enbuffer;
+
+ if ($self->continuousBuffer) {
+ $iv = &$self->encryptIV;
+ $pos = &$buffer["pos"];
+ } else {
+ $iv = $self->encryptIV;
+ $pos = 0;
+ }
+ $len = strlen($text);
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = '.$block_size.' - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ $ciphertext = substr($iv, $orig_pos) ^ $text;
+ $iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
+ }
+ while ($len >= '.$block_size.') {
+ $in = $iv;
+ '.$_encryptBlock.';
+ $iv = $in ^ substr($text, $i, '.$block_size.');
+ $ciphertext.= $iv;
+ $len-= '.$block_size.';
+ $i+= '.$block_size.';
+ }
+ if ($len) {
+ $in = $iv;
+ '.$_encryptBlock.'
+ $iv = $in;
+ $block = $iv ^ substr($text, $i);
+ $iv = substr_replace($iv, $block, 0, $len);
+ $ciphertext.= $block;
+ $pos = $len;
+ }
+ return $ciphertext;
+ ';
+
+ $decrypt = $init_encryptBlock . '
+ $plaintext = "";
+ $buffer = &$self->debuffer;
+
+ if ($self->continuousBuffer) {
+ $iv = &$self->decryptIV;
+ $pos = &$buffer["pos"];
+ } else {
+ $iv = $self->decryptIV;
+ $pos = 0;
+ }
+ $len = strlen($text);
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = '.$block_size.' - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ $plaintext = substr($iv, $orig_pos) ^ $text;
+ $iv = substr_replace($iv, substr($text, 0, $i), $orig_pos, $i);
+ }
+ while ($len >= '.$block_size.') {
+ $in = $iv;
+ '.$_encryptBlock.'
+ $iv = $in;
+ $cb = substr($text, $i, '.$block_size.');
+ $plaintext.= $iv ^ $cb;
+ $iv = $cb;
+ $len-= '.$block_size.';
+ $i+= '.$block_size.';
+ }
+ if ($len) {
+ $in = $iv;
+ '.$_encryptBlock.'
+ $iv = $in;
+ $plaintext.= $iv ^ substr($text, $i);
+ $iv = substr_replace($iv, substr($text, $i), 0, $len);
+ $pos = $len;
+ }
+
+ return $plaintext;
+ ';
+ break;
+ case CRYPT_RIJNDAEL_MODE_OFB:
+ $encrypt = $init_encryptBlock . '
+ $ciphertext = "";
+ $plaintext_len = strlen($text);
+ $xor = $self->encryptIV;
+ $buffer = &$self->enbuffer;
+
+ if (strlen($buffer["xor"])) {
+ for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
+ $block = substr($text, $i, '.$block_size.');
+ if (strlen($block) > strlen($buffer["xor"])) {
+ $in = $xor;
+ '.$_encryptBlock.'
+ $xor = $in;
+ $buffer["xor"].= $xor;
+ }
+ $key = $self->_string_shift($buffer["xor"], '.$block_size.');
+ $ciphertext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < $plaintext_len; $i+= '.$block_size.') {
+ $in = $xor;
+ '.$_encryptBlock.'
+ $xor = $in;
+ $ciphertext.= substr($text, $i, '.$block_size.') ^ $xor;
+ }
+ $key = $xor;
+ }
+ if ($self->continuousBuffer) {
+ $self->encryptIV = $xor;
+ if ($start = $plaintext_len % '.$block_size.') {
+ $buffer["xor"] = substr($key, $start) . $buffer["xor"];
+ }
+ }
+ return $ciphertext;
+ ';
+
+ $decrypt = $init_encryptBlock . '
+ $plaintext = "";
+ $ciphertext_len = strlen($text);
+ $xor = $self->decryptIV;
+ $buffer = &$self->debuffer;
+
+ if (strlen($buffer["xor"])) {
+ for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
+ $block = substr($text, $i, '.$block_size.');
+ if (strlen($block) > strlen($buffer["xor"])) {
+ $in = $xor;
+ '.$_encryptBlock.'
+ $xor = $in;
+ $buffer["xor"].= $xor;
+ }
+ $key = $self->_string_shift($buffer["xor"], '.$block_size.');
+ $plaintext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < $ciphertext_len; $i+= '.$block_size.') {
+ $in = $xor;
+ '.$_encryptBlock.'
+ $xor = $in;
+ $plaintext.= substr($text, $i, '.$block_size.') ^ $xor;
+ }
+ $key = $xor;
+ }
+ if ($self->continuousBuffer) {
+ $self->decryptIV = $xor;
+ if ($start = $ciphertext_len % '.$block_size.') {
+ $buffer["xor"] = substr($key, $start) . $buffer["xor"];
+ }
+ }
+ return $plaintext;
+ ';
+ break;
+ }
+ $lambda_functions[$code_hash] = create_function('$action, &$self, $text', 'if ($action == "encrypt") { '.$encrypt.' } else { '.$decrypt.' }');
+ }
+ $this->inline_crypt = $lambda_functions[$code_hash];
+ }
+
+ /**
+ * Holds the lambda_functions table (classwide)
+ *
+ * @see Crypt_Rijndael::inline_crypt_setup()
+ * @return Array
+ * @access private
+ */
+ function &get_lambda_functions()
+ {
+ static $functions = array();
+ return $functions;
+ }
+}
+
+// vim: ts=4:sw=4:et:
+// vim6: fdl=1: