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phpseclib updated, some new features that we won't use

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This commit is contained in:
Mikael Nordfeldth 2016-06-17 22:44:12 +02:00
parent a6390007b7
commit 28ca5d90d9
38 changed files with 23836 additions and 5761 deletions
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207
plugins/OStatus/extlib/phpseclib/Crypt/AES.php
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@ -1,28 +1,31 @@
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementation of AES.
*
* Uses mcrypt, if available/possible, and an internal implementation, otherwise.
*
* PHP versions 4 and 5
* PHP version 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 192-bits and 192 bits will be the key length until {@link Crypt_AES::setKey() setKey()}
* NOTE: Since AES.php is (for compatibility and phpseclib-historical reasons) virtually
* just a wrapper to Rijndael.php you may consider using Rijndael.php instead of
* to save one include_once().
*
* If {@link self::setKeyLength() setKeyLength()} isn't called, it'll be calculated from
* {@link self::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 192-bits and 192 bits will be the key length until {@link self::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,
* Since \phpseclib\Crypt\AES extends \phpseclib\Crypt\Rijndael, some functions are available to be called that, in the context of AES, don't
* make a whole lot of sense. {@link self::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');
* include 'vendor/autoload.php';
*
* $aes = new Crypt_AES();
* $aes = new \phpseclib\Crypt\AES();
*
* $aes->setKey('abcdefghijklmnop');
*
@ -36,153 +39,85 @@
* ?>
* </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
* @package AES
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVIII Jim Wigginton
* @copyright 2008 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', CRYPT_MODE_CTR);
/**
* Encrypt / decrypt using the Electronic Code Book mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
*/
define('CRYPT_AES_MODE_ECB', CRYPT_MODE_ECB);
/**
* Encrypt / decrypt using the Code Book Chaining mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
*/
define('CRYPT_AES_MODE_CBC', CRYPT_MODE_CBC);
/**
* Encrypt / decrypt using the Cipher Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
*/
define('CRYPT_AES_MODE_CFB', CRYPT_MODE_CFB);
/**
* Encrypt / decrypt using the Cipher Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
*/
define('CRYPT_AES_MODE_OFB', CRYPT_MODE_OFB);
/**#@-*/
/**#@+
* @access private
* @see Crypt_AES::Crypt_AES()
*/
/**
* Toggles the internal implementation
*/
define('CRYPT_AES_MODE_INTERNAL', CRYPT_MODE_INTERNAL);
/**
* Toggles the mcrypt implementation
*/
define('CRYPT_AES_MODE_MCRYPT', CRYPT_MODE_MCRYPT);
/**#@-*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of AES.
*
* @package AES
* @author Jim Wigginton <terrafrost@php.net>
* @version 0.1.0
* @access public
* @package Crypt_AES
*/
class Crypt_AES extends Crypt_Rijndael {
/**
* The namespace used by the cipher for its constants.
*
* @see Crypt_Base::const_namespace
* @var String
* @access private
*/
var $const_namespace = 'AES';
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* $mode could be:
*
* - CRYPT_AES_MODE_ECB
*
* - CRYPT_AES_MODE_CBC
*
* - CRYPT_AES_MODE_CTR
*
* - CRYPT_AES_MODE_CFB
*
* - CRYPT_AES_MODE_OFB
*
* If not explictly set, CRYPT_AES_MODE_CBC will be used.
*
* @see Crypt_Rijndael::Crypt_Rijndael()
* @see Crypt_Base::Crypt_Base()
* @param optional Integer $mode
* @access public
*/
function Crypt_AES($mode = CRYPT_AES_MODE_CBC)
{
parent::Crypt_Rijndael($mode);
}
class AES extends Rijndael
{
/**
* Dummy function
*
* Since Crypt_AES extends Crypt_Rijndael, this function is, technically, available, but it doesn't do anything.
* Since \phpseclib\Crypt\AES extends \phpseclib\Crypt\Rijndael, this function is, technically, available, but it doesn't do anything.
*
* @see Crypt_Rijndael::setBlockLength()
* @see \phpseclib\Crypt\Rijndael::setBlockLength()
* @access public
* @param Integer $length
* @param int $length
* @throws \BadMethodCallException anytime it's called
*/
function setBlockLength($length)
{
return;
throw new \BadMethodCallException('The block length cannot be set for AES.');
}
/**
* Sets the key length
*
* Valid key lengths are 128, 192, and 256. Set the link to bool(false) to disable a fixed key length
*
* @see \phpseclib\Crypt\Rijndael:setKeyLength()
* @access public
* @param int $length
* @throws \LengthException if the key length isn't supported
*/
function setKeyLength($length)
{
switch ($length) {
case 128:
case 192:
case 256:
break;
default:
throw new \LengthException('Key of size ' . $length . ' not supported by this algorithm. Only keys of sizes 128, 192 or 256 supported');
}
parent::setKeyLength($length);
}
/**
* Sets the key.
*
* Rijndael supports five different key lengths, AES only supports three.
*
* @see \phpseclib\Crypt\Rijndael:setKey()
* @see setKeyLength()
* @access public
* @param string $key
* @throws \LengthException if the key length isn't supported
*/
function setKey($key)
{
switch (strlen($key)) {
case 16:
case 24:
case 32:
break;
default:
throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes 16, 24 or 32 supported');
}
parent::setKey($key);
}
}
// vim: ts=4:sw=4:et:
// vim6: fdl=1:

1470
plugins/OStatus/extlib/phpseclib/Crypt/Base.php
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260
plugins/OStatus/extlib/phpseclib/Crypt/Blowfish.php
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@ -1,12 +1,11 @@
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementation of Blowfish.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP versions 4 and 5
* PHP version 5
*
* Useful resources are as follows:
*
@ -15,9 +14,9 @@
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/Blowfish.php');
* include 'vendor/autoload.php';
*
* $blowfish = new Crypt_Blowfish();
* $blowfish = new \phpseclib\Crypt\Blowfish();
*
* $blowfish->setKey('12345678901234567890123456789012');
*
@ -27,139 +26,41 @@
* ?>
* </code>
*
* LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @category Crypt
* @package Crypt_Blowfish
* @package Blowfish
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
* @copyright MMVII Jim Wigginton
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @version 1.0
* @link http://phpseclib.sourceforge.net
*/
/**
* Include Crypt_Base
*
* Base cipher class
*/
if (!class_exists('Crypt_Base')) {
require_once('Base.php');
}
/**#@+
* @access public
* @see Crypt_Blowfish::encrypt()
* @see Crypt_Blowfish::decrypt()
*/
/**
* Encrypt / decrypt using the Counter mode.
*
* Set to -1 since that's what Crypt/Random.php uses to index the CTR mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Counter_.28CTR.29
*/
define('CRYPT_BLOWFISH_MODE_CTR', CRYPT_MODE_CTR);
/**
* Encrypt / decrypt using the Electronic Code Book mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
*/
define('CRYPT_BLOWFISH_MODE_ECB', CRYPT_MODE_ECB);
/**
* Encrypt / decrypt using the Code Book Chaining mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
*/
define('CRYPT_BLOWFISH_MODE_CBC', CRYPT_MODE_CBC);
/**
* Encrypt / decrypt using the Cipher Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
*/
define('CRYPT_BLOWFISH_MODE_CFB', CRYPT_MODE_CFB);
/**
* Encrypt / decrypt using the Cipher Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
*/
define('CRYPT_BLOWFISH_MODE_OFB', CRYPT_MODE_OFB);
/**#@-*/
/**#@+
* @access private
* @see Crypt_Blowfish::Crypt_Blowfish()
*/
/**
* Toggles the internal implementation
*/
define('CRYPT_BLOWFISH_MODE_INTERNAL', CRYPT_MODE_INTERNAL);
/**
* Toggles the mcrypt implementation
*/
define('CRYPT_BLOWFISH_MODE_MCRYPT', CRYPT_MODE_MCRYPT);
/**#@-*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of Blowfish.
*
* @package Blowfish
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
* @version 1.0
* @access public
* @package Crypt_Blowfish
*/
class Crypt_Blowfish extends Crypt_Base {
class Blowfish extends Base
{
/**
* Block Length of the cipher
*
* @see Crypt_Base::block_size
* @var Integer
* @see \phpseclib\Crypt\Base::block_size
* @var int
* @access private
*/
var $block_size = 8;
/**
* The default password key_size used by setPassword()
*
* @see Crypt_Base::password_key_size
* @see Crypt_Base::setPassword()
* @var Integer
* @access private
*/
var $password_key_size = 56;
/**
* The namespace used by the cipher for its constants.
*
* @see Crypt_Base::const_namespace
* @var String
* @access private
*/
var $const_namespace = 'BLOWFISH';
/**
* The mcrypt specific name of the cipher
*
* @see Crypt_Base::cipher_name_mcrypt
* @var String
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'blowfish';
@ -167,8 +68,8 @@ class Crypt_Blowfish extends Crypt_Base {
/**
* Optimizing value while CFB-encrypting
*
* @see Crypt_Base::cfb_init_len
* @var Integer
* @see \phpseclib\Crypt\Base::cfb_init_len
* @var int
* @access private
*/
var $cfb_init_len = 500;
@ -176,12 +77,12 @@ class Crypt_Blowfish extends Crypt_Base {
/**
* The fixed subkeys boxes ($sbox0 - $sbox3) with 256 entries each
*
* S-Box 1
* S-Box 0
*
* @access private
* @var array
*/
var $sbox0 = array (
var $sbox0 = array(
0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
@ -342,7 +243,7 @@ class Crypt_Blowfish extends Crypt_Base {
/**
* P-Array consists of 18 32-bit subkeys
*
* @var array $parray
* @var array
* @access private
*/
var $parray = array(
@ -356,7 +257,7 @@ class Crypt_Blowfish extends Crypt_Base {
*
* Holds the expanded key [p] and the key-depended s-boxes [sb]
*
* @var array $bctx
* @var array
* @access private
*/
var $bctx;
@ -364,72 +265,86 @@ class Crypt_Blowfish extends Crypt_Base {
/**
* Holds the last used key
*
* @var Array
* @var array
* @access private
*/
var $kl;
/**
* The Key Length (in bytes)
*
* @see \phpseclib\Crypt\Base::setKeyLength()
* @var int
* @access private
* @internal The max value is 256 / 8 = 32, the min value is 128 / 8 = 16. Exists in conjunction with $Nk
* because the encryption / decryption / key schedule creation requires this number and not $key_length. We could
* derive this from $key_length or vice versa, but that'd mean we'd have to do multiple shift operations, so in lieu
* of that, we'll just precompute it once.
*/
var $key_length = 16;
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* $mode could be:
*
* - CRYPT_BLOWFISH_MODE_ECB
*
* - CRYPT_BLOWFISH_MODE_CBC
*
* - CRYPT_BLOWFISH_MODE_CTR
*
* - CRYPT_BLOWFISH_MODE_CFB
*
* - CRYPT_BLOWFISH_MODE_OFB
*
* If not explictly set, CRYPT_BLOWFISH_MODE_CBC will be used.
*
* @see Crypt_Base::Crypt_Base()
* @param optional Integer $mode
* @param int $mode
* @access public
* @throws \InvalidArgumentException if an invalid / unsupported mode is provided
*/
function Crypt_Blowfish($mode = CRYPT_BLOWFISH_MODE_CBC)
function __construct($mode)
{
parent::Crypt_Base($mode);
if ($mode == self::MODE_STREAM) {
throw new \InvalidArgumentException('Block ciphers cannot be ran in stream mode');
}
parent::__construct($mode);
}
/**
* Sets the key.
* Sets the key length.
*
* Keys can be of any length. Blowfish, itself, requires the use of a key between 32 and max. 448-bits long.
* If the key is less than 32-bits we NOT fill the key to 32bit but let the key as it is to be compatible
* with mcrypt because mcrypt act this way with blowfish key's < 32 bits.
*
* If the key is more than 448-bits, we trim the excess bits.
*
* If the key is not explicitly set, or empty, it'll be assumed a 128 bits key to be all null bytes.
* Key lengths can be between 32 and 448 bits.
*
* @access public
* @see Crypt_Base::setKey()
* @param String $key
* @param int $length
*/
function setKey($key)
function setKeyLength($length)
{
$keylength = strlen($key);
if (!$keylength) {
$key = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
}
elseif ($keylength > 56) {
$key = substr($key, 0, 56);
if ($length < 32 || $length > 448) {
throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys of sizes between 32 and 448 bits are supported');
}
parent::setKey($key);
$this->key_length = $length >> 3;
parent::setKeyLength($length);
}
/**
* Test for engine validity
*
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
*
* @see \phpseclib\Crypt\Base::isValidEngine()
* @param int $engine
* @access public
* @return bool
*/
function isValidEngine($engine)
{
if ($engine == self::ENGINE_OPENSSL) {
if ($this->key_length != 16) {
return false;
}
$this->cipher_name_openssl_ecb = 'bf-ecb';
$this->cipher_name_openssl = 'bf-' . $this->_openssl_translate_mode();
}
return parent::isValidEngine($engine);
}
/**
* Setup the key (expansion)
*
* @see Crypt_Base::_setupKey()
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
@ -486,8 +401,8 @@ class Crypt_Blowfish extends Crypt_Base {
* Encrypts a block
*
* @access private
* @param String $in
* @return String
* @param string $in
* @return string
*/
function _encryptBlock($in)
{
@ -522,8 +437,8 @@ class Crypt_Blowfish extends Crypt_Base {
* Decrypts a block
*
* @access private
* @param String $in
* @return String
* @param string $in
* @return string
*/
function _decryptBlock($in)
{
@ -550,30 +465,28 @@ class Crypt_Blowfish extends Crypt_Base {
$sb_2[$r >> 8 & 0xff]) +
$sb_3[$r & 0xff];
}
return pack("N*", $r ^ $p[0], $l ^ $p[1]);
}
/**
* Setup the performance-optimized function for de/encrypt()
*
* @see Crypt_Base::_setupInlineCrypt()
* @see \phpseclib\Crypt\Base::_setupInlineCrypt()
* @access private
*/
function _setupInlineCrypt()
{
$lambda_functions =& Crypt_Blowfish::_getLambdaFunctions();
$lambda_functions =& self::_getLambdaFunctions();
// We create max. 10 hi-optimized code for memory reason. Means: For each $key one ultra fast inline-crypt function.
// (Currently, for Blowfish, one generated $lambda_function cost on php5.5@32bit ~100kb unfreeable mem and ~180kb on php5.5@64bit)
// After that, we'll still create very fast optimized code but not the hi-ultimative code, for each $mode one.
$gen_hi_opt_code = (bool)( count($lambda_functions) < 10);
$gen_hi_opt_code = (bool)(count($lambda_functions) < 10);
switch (true) {
case $gen_hi_opt_code:
$code_hash = md5(str_pad("Crypt_Blowfish, {$this->mode}, ", 32, "\0") . $this->key);
break;
default:
// Generation of a unique hash for our generated code
$code_hash = "Crypt_Blowfish, {$this->mode}";
if ($gen_hi_opt_code) {
$code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key);
}
if (!isset($lambda_functions[$code_hash])) {
@ -673,6 +586,3 @@ class Crypt_Blowfish extends Crypt_Base {
$this->inline_crypt = $lambda_functions[$code_hash];
}
}
// vim: ts=4:sw=4:et:
// vim6: fdl=1:

407
plugins/OStatus/extlib/phpseclib/Crypt/DES.php
View File

@ -1,12 +1,11 @@
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementation of DES.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP versions 4 and 5
* PHP version 5
*
* Useful resources are as follows:
*
@ -17,9 +16,9 @@
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/DES.php');
* include 'vendor/autoload.php';
*
* $des = new Crypt_DES();
* $des = new \phpseclib\Crypt\DES();
*
* $des->setKey('abcdefgh');
*
@ -33,170 +32,87 @@
* ?>
* </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_DES
* @package DES
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
/**
* Include Crypt_Base
*
* Base cipher class
*/
if (!class_exists('Crypt_Base')) {
require_once('Base.php');
}
/**#@+
* @access private
* @see Crypt_DES::_setupKey()
* @see Crypt_DES::_processBlock()
*/
/**
* Contains $keys[CRYPT_DES_ENCRYPT]
*/
define('CRYPT_DES_ENCRYPT', 0);
/**
* Contains $keys[CRYPT_DES_DECRYPT]
*/
define('CRYPT_DES_DECRYPT', 1);
/**#@-*/
/**#@+
* @access public
* @see Crypt_DES::encrypt()
* @see Crypt_DES::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_DES_MODE_CTR', CRYPT_MODE_CTR);
/**
* Encrypt / decrypt using the Electronic Code Book mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
*/
define('CRYPT_DES_MODE_ECB', CRYPT_MODE_ECB);
/**
* Encrypt / decrypt using the Code Book Chaining mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
*/
define('CRYPT_DES_MODE_CBC', CRYPT_MODE_CBC);
/**
* Encrypt / decrypt using the Cipher Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
*/
define('CRYPT_DES_MODE_CFB', CRYPT_MODE_CFB);
/**
* Encrypt / decrypt using the Cipher Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
*/
define('CRYPT_DES_MODE_OFB', CRYPT_MODE_OFB);
/**#@-*/
/**#@+
* @access private
* @see Crypt_DES::Crypt_DES()
*/
/**
* Toggles the internal implementation
*/
define('CRYPT_DES_MODE_INTERNAL', CRYPT_MODE_INTERNAL);
/**
* Toggles the mcrypt implementation
*/
define('CRYPT_DES_MODE_MCRYPT', CRYPT_MODE_MCRYPT);
/**#@-*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of DES.
*
* @package DES
* @author Jim Wigginton <terrafrost@php.net>
* @version 0.1.0
* @access public
* @package Crypt_DES
*/
class Crypt_DES extends Crypt_Base {
class DES extends Base
{
/**#@+
* @access private
* @see \phpseclib\Crypt\DES::_setupKey()
* @see \phpseclib\Crypt\DES::_processBlock()
*/
/**
* Contains $keys[self::ENCRYPT]
*/
const ENCRYPT = 0;
/**
* Contains $keys[self::DECRYPT]
*/
const DECRYPT = 1;
/**#@-*/
/**
* Block Length of the cipher
*
* @see Crypt_Base::block_size
* @var Integer
* @see \phpseclib\Crypt\Base::block_size
* @var int
* @access private
*/
var $block_size = 8;
/**
* The Key
* Key Length (in bytes)
*
* @see Crypt_Base::key
* @see setKey()
* @var String
* @see \phpseclib\Crypt\Base::setKeyLength()
* @var int
* @access private
*/
var $key = "\0\0\0\0\0\0\0\0";
/**
* The default password key_size used by setPassword()
*
* @see Crypt_Base::password_key_size
* @see Crypt_Base::setPassword()
* @var Integer
* @access private
*/
var $password_key_size = 8;
/**
* The namespace used by the cipher for its constants.
*
* @see Crypt_Base::const_namespace
* @var String
* @access private
*/
var $const_namespace = 'DES';
var $key_length = 8;
/**
* The mcrypt specific name of the cipher
*
* @see Crypt_Base::cipher_name_mcrypt
* @var String
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'des';
/**
* The OpenSSL names of the cipher / modes
*
* @see \phpseclib\Crypt\Base::openssl_mode_names
* @var array
* @access private
*/
var $openssl_mode_names = array(
self::MODE_ECB => 'des-ecb',
self::MODE_CBC => 'des-cbc',
self::MODE_CFB => 'des-cfb',
self::MODE_OFB => 'des-ofb'
// self::MODE_CTR is undefined for DES
);
/**
* Optimizing value while CFB-encrypting
*
* @see Crypt_Base::cfb_init_len
* @var Integer
* @see \phpseclib\Crypt\Base::cfb_init_len
* @var int
* @access private
*/
var $cfb_init_len = 500;
@ -204,11 +120,11 @@ class Crypt_DES extends Crypt_Base {
/**
* Switch for DES/3DES encryption
*
* Used only if $engine == CRYPT_DES_MODE_INTERNAL
* Used only if $engine == self::ENGINE_INTERNAL
*
* @see Crypt_DES::_setupKey()
* @see Crypt_DES::_processBlock()
* @var Integer
* @see self::_setupKey()
* @see self::_processBlock()
* @var int
* @access private
*/
var $des_rounds = 1;
@ -216,17 +132,17 @@ class Crypt_DES extends Crypt_Base {
/**
* max possible size of $key
*
* @see Crypt_DES::setKey()
* @var String
* @see self::setKey()
* @var string
* @access private
*/
var $key_size_max = 8;
var $key_length_max = 8;
/**
* The Key Schedule
*
* @see Crypt_DES::_setupKey()
* @var Array
* @see self::_setupKey()
* @var array
* @access private
*/
var $keys;
@ -238,9 +154,9 @@ class Crypt_DES extends Crypt_Base {
* with each byte containing all bits in the same state as the
* corresponding bit in the index value.
*
* @see Crypt_DES::_processBlock()
* @see Crypt_DES::_setupKey()
* @var Array
* @see self::_processBlock()
* @see self::_setupKey()
* @var array
* @access private
*/
var $shuffle = array(
@ -379,7 +295,7 @@ class Crypt_DES extends Crypt_Base {
*
* Indexing this table with each source byte performs the initial bit permutation.
*
* @var Array
* @var array
* @access private
*/
var $ipmap = array(
@ -421,7 +337,7 @@ class Crypt_DES extends Crypt_Base {
* Inverse IP mapping helper table.
* Indexing this table with a byte value reverses the bit order.
*
* @var Array
* @var array
* @access private
*/
var $invipmap = array(
@ -465,7 +381,7 @@ class Crypt_DES extends Crypt_Base {
* Each box ($sbox1-$sbox8) has been vectorized, then each value pre-permuted using the
* P table: concatenation can then be replaced by exclusive ORs.
*
* @var Array
* @var array
* @access private
*/
var $sbox1 = array(
@ -490,7 +406,7 @@ class Crypt_DES extends Crypt_Base {
/**
* Pre-permuted S-box2
*
* @var Array
* @var array
* @access private
*/
var $sbox2 = array(
@ -515,7 +431,7 @@ class Crypt_DES extends Crypt_Base {
/**
* Pre-permuted S-box3
*
* @var Array
* @var array
* @access private
*/
var $sbox3 = array(
@ -540,7 +456,7 @@ class Crypt_DES extends Crypt_Base {
/**
* Pre-permuted S-box4
*
* @var Array
* @var array
* @access private
*/
var $sbox4 = array(
@ -565,7 +481,7 @@ class Crypt_DES extends Crypt_Base {
/**
* Pre-permuted S-box5
*
* @var Array
* @var array
* @access private
*/
var $sbox5 = array(
@ -590,7 +506,7 @@ class Crypt_DES extends Crypt_Base {
/**
* Pre-permuted S-box6
*
* @var Array
* @var array
* @access private
*/
var $sbox6 = array(
@ -615,7 +531,7 @@ class Crypt_DES extends Crypt_Base {
/**
* Pre-permuted S-box7
*
* @var Array
* @var array
* @access private
*/
var $sbox7 = array(
@ -640,7 +556,7 @@ class Crypt_DES extends Crypt_Base {
/**
* Pre-permuted S-box8
*
* @var Array
* @var array
* @access private
*/
var $sbox8 = array(
@ -665,52 +581,56 @@ class Crypt_DES extends Crypt_Base {
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* $mode could be:
*
* - CRYPT_DES_MODE_ECB
*
* - CRYPT_DES_MODE_CBC
*
* - CRYPT_DES_MODE_CTR
*
* - CRYPT_DES_MODE_CFB
*
* - CRYPT_DES_MODE_OFB
*
* If not explictly set, CRYPT_DES_MODE_CBC will be used.
*
* @see Crypt_Base::Crypt_Base()
* @param optional Integer $mode
* @param int $mode
* @access public
* @throws \InvalidArgumentException if an invalid / unsupported mode is provided
*/
function Crypt_DES($mode = CRYPT_DES_MODE_CBC)
function __construct($mode)
{
parent::Crypt_Base($mode);
if ($mode == self::MODE_STREAM) {
throw new \InvalidArgumentException('Block ciphers cannot be ran in stream mode');
}
parent::__construct($mode);
}
/**
* Test for engine validity
*
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
*
* @see \phpseclib\Crypt\Base::isValidEngine()
* @param int $engine
* @access public
* @return bool
*/
function isValidEngine($engine)
{
if ($this->key_length_max == 8) {
if ($engine == self::ENGINE_OPENSSL) {
$this->cipher_name_openssl_ecb = 'des-ecb';
$this->cipher_name_openssl = 'des-' . $this->_openssl_translate_mode();
}
}
return parent::isValidEngine($engine);
}
/**
* Sets the key.
*
* Keys can be of any length. DES, itself, uses 64-bit keys (eg. strlen($key) == 8), however, we
* only use the first eight, if $key has more then eight characters in it, and pad $key with the
* null byte if it is less then eight characters long.
* Keys must be 64-bits long or 8 bytes long.
*
* DES also requires that every eighth bit be a parity bit, however, we'll ignore that.
*
* If the key is not explicitly set, it'll be assumed to be all zero's.
*
* @see Crypt_Base::setKey()
* @see \phpseclib\Crypt\Base::setKey()
* @access public
* @param String $key
* @param string $key
*/
function setKey($key)
{
// We check/cut here only up to max length of the key.
// Key padding to the proper length will be done in _setupKey()
if (strlen($key) > $this->key_size_max) {
$key = substr($key, 0, $this->key_size_max);
if (!($this instanceof TripleDES) && strlen($key) != 8) {
throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of size 8 are supported');
}
// Sets the key
@ -720,46 +640,46 @@ class Crypt_DES extends Crypt_Base {
/**
* Encrypts a block
*
* @see Crypt_Base::_encryptBlock()
* @see Crypt_Base::encrypt()
* @see Crypt_DES::encrypt()
* @see \phpseclib\Crypt\Base::_encryptBlock()
* @see \phpseclib\Crypt\Base::encrypt()
* @see self::encrypt()
* @access private
* @param String $in
* @return String
* @param string $in
* @return string
*/
function _encryptBlock($in)
{
return $this->_processBlock($in, CRYPT_DES_ENCRYPT);
return $this->_processBlock($in, self::ENCRYPT);
}
/**
* Decrypts a block
*
* @see Crypt_Base::_decryptBlock()
* @see Crypt_Base::decrypt()
* @see Crypt_DES::decrypt()
* @see \phpseclib\Crypt\Base::_decryptBlock()
* @see \phpseclib\Crypt\Base::decrypt()
* @see self::decrypt()
* @access private
* @param String $in
* @return String
* @param string $in
* @return string
*/
function _decryptBlock($in)
{
return $this->_processBlock($in, CRYPT_DES_DECRYPT);
return $this->_processBlock($in, self::DECRYPT);
}
/**
* Encrypts or decrypts a 64-bit block
*
* $mode should be either CRYPT_DES_ENCRYPT or CRYPT_DES_DECRYPT. See
* $mode should be either self::ENCRYPT or self::DECRYPT. See
* {@link http://en.wikipedia.org/wiki/Image:Feistel.png Feistel.png} to get a general
* idea of what this function does.
*
* @see Crypt_DES::_encryptBlock()
* @see Crypt_DES::_decryptBlock()
* @see self::_encryptBlock()
* @see self::_decryptBlock()
* @access private
* @param String $block
* @param Integer $mode
* @return String
* @param string $block
* @param int $mode
* @return string
*/
function _processBlock($block, $mode)
{
@ -839,7 +759,7 @@ class Crypt_DES extends Crypt_Base {
/**
* Creates the key schedule
*
* @see Crypt_Base::_setupKey()
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
@ -1320,8 +1240,8 @@ class Crypt_DES extends Crypt_Base {
$d = (($key['d'] >> 4) & 0x0FFFFFF0) | ($key['c'] & 0x0F);
$keys[$des_round] = array(
CRYPT_DES_ENCRYPT => array(),
CRYPT_DES_DECRYPT => array_fill(0, 32, 0)
self::ENCRYPT => array(),
self::DECRYPT => array_fill(0, 32, 0)
);
for ($i = 0, $ki = 31; $i < 16; ++$i, $ki-= 2) {
$c <<= $shifts[$i];
@ -1336,35 +1256,37 @@ class Crypt_DES extends Crypt_Base {
$pc2mapd3[($d >> 8) & 0xFF] | $pc2mapd4[ $d & 0xFF];
// Reorder: odd bytes/even bytes. Push the result in key schedule.
$keys[$des_round][CRYPT_DES_ENCRYPT][ ] =
$keys[$des_round][CRYPT_DES_DECRYPT][$ki - 1] = ( $cp & 0xFF000000) | (($cp << 8) & 0x00FF0000) |
$val1 = ( $cp & 0xFF000000) | (($cp << 8) & 0x00FF0000) |
(($dp >> 16) & 0x0000FF00) | (($dp >> 8) & 0x000000FF);
$keys[$des_round][CRYPT_DES_ENCRYPT][ ] =
$keys[$des_round][CRYPT_DES_DECRYPT][$ki ] = (($cp << 8) & 0xFF000000) | (($cp << 16) & 0x00FF0000) |
$val2 = (($cp << 8) & 0xFF000000) | (($cp << 16) & 0x00FF0000) |
(($dp >> 8) & 0x0000FF00) | ( $dp & 0x000000FF);
$keys[$des_round][self::ENCRYPT][ ] = $val1;
$keys[$des_round][self::DECRYPT][$ki - 1] = $val1;
$keys[$des_round][self::ENCRYPT][ ] = $val2;
$keys[$des_round][self::DECRYPT][$ki ] = $val2;
}
}
switch ($this->des_rounds) {
case 3: // 3DES keys
$this->keys = array(
CRYPT_DES_ENCRYPT => array_merge(
$keys[0][CRYPT_DES_ENCRYPT],
$keys[1][CRYPT_DES_DECRYPT],
$keys[2][CRYPT_DES_ENCRYPT]
self::ENCRYPT => array_merge(
$keys[0][self::ENCRYPT],
$keys[1][self::DECRYPT],
$keys[2][self::ENCRYPT]
),
CRYPT_DES_DECRYPT => array_merge(
$keys[2][CRYPT_DES_DECRYPT],
$keys[1][CRYPT_DES_ENCRYPT],
$keys[0][CRYPT_DES_DECRYPT]
self::DECRYPT => array_merge(
$keys[2][self::DECRYPT],
$keys[1][self::ENCRYPT],
$keys[0][self::DECRYPT]
)
);
break;
// case 1: // DES keys
default:
$this->keys = array(
CRYPT_DES_ENCRYPT => $keys[0][CRYPT_DES_ENCRYPT],
CRYPT_DES_DECRYPT => $keys[0][CRYPT_DES_DECRYPT]
self::ENCRYPT => $keys[0][self::ENCRYPT],
self::DECRYPT => $keys[0][self::DECRYPT]
);
}
}
@ -1372,12 +1294,12 @@ class Crypt_DES extends Crypt_Base {
/**
* Setup the performance-optimized function for de/encrypt()
*
* @see Crypt_Base::_setupInlineCrypt()
* @see \phpseclib\Crypt\Base::_setupInlineCrypt()
* @access private
*/
function _setupInlineCrypt()
{
$lambda_functions =& Crypt_DES::_getLambdaFunctions();
$lambda_functions =& self::_getLambdaFunctions();
// Engine configuration for:
// - DES ($des_rounds == 1) or
@ -1385,21 +1307,20 @@ class Crypt_DES extends Crypt_Base {
$des_rounds = $this->des_rounds;
// We create max. 10 hi-optimized code for memory reason. Means: For each $key one ultra fast inline-crypt function.
// (Currently, for DES, one generated $lambda_function cost on php5.5@32bit ~135kb unfreeable mem and ~230kb on php5.5@64bit)
// (Currently, for TripleDES, one generated $lambda_function cost on php5.5@32bit ~240kb unfreeable mem and ~340kb on php5.5@64bit)
// After that, we'll still create very fast optimized code but not the hi-ultimative code, for each $mode one
$gen_hi_opt_code = (bool)( count($lambda_functions) < 10 );
// Generation of a uniqe hash for our generated code
switch (true) {
case $gen_hi_opt_code:
$code_hash = "Crypt_DES, $des_rounds, {$this->mode}";
if ($gen_hi_opt_code) {
// For hi-optimized code, we create for each combination of
// $mode, $des_rounds and $this->key its own encrypt/decrypt function.
$code_hash = md5(str_pad("Crypt_DES, $des_rounds, {$this->mode}, ", 32, "\0") . $this->key);
break;
default:
// After max 10 hi-optimized functions, we create generic
// (still very fast.. but not ultra) functions for each $mode/$des_rounds
// Currently 2 * 5 generic functions will be then max. possible.
$code_hash = "Crypt_DES, $des_rounds, {$this->mode}";
$code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key);
}
// Is there a re-usable $lambda_functions in there? If not, we have to create it.
@ -1429,8 +1350,8 @@ class Crypt_DES extends Crypt_Base {
// No futher initialisation of the $keys schedule is necessary.
// That is the extra performance boost.
$k = array(
CRYPT_DES_ENCRYPT => $this->keys[CRYPT_DES_ENCRYPT],
CRYPT_DES_DECRYPT => $this->keys[CRYPT_DES_DECRYPT]
self::ENCRYPT => $this->keys[self::ENCRYPT],
self::DECRYPT => $this->keys[self::DECRYPT]
);
$init_encrypt = '';
$init_decrypt = '';
@ -1439,22 +1360,21 @@ class Crypt_DES extends Crypt_Base {
// In generic optimized code mode, we have to use, as the best compromise [currently],
// our key schedule as $ke/$kd arrays. (with hardcoded indexes...)
$k = array(
CRYPT_DES_ENCRYPT => array(),
CRYPT_DES_DECRYPT => array()
self::ENCRYPT => array(),
self::DECRYPT => array()
);
for ($i = 0, $c = count($this->keys[CRYPT_DES_ENCRYPT]); $i < $c; ++$i) {
$k[CRYPT_DES_ENCRYPT][$i] = '$ke[' . $i . ']';
$k[CRYPT_DES_DECRYPT][$i] = '$kd[' . $i . ']';
for ($i = 0, $c = count($this->keys[self::ENCRYPT]); $i < $c; ++$i) {
$k[self::ENCRYPT][$i] = '$ke[' . $i . ']';
$k[self::DECRYPT][$i] = '$kd[' . $i . ']';
}
$init_encrypt = '$ke = $self->keys[CRYPT_DES_ENCRYPT];';
$init_decrypt = '$kd = $self->keys[CRYPT_DES_DECRYPT];';
$init_encrypt = '$ke = $self->keys[self::ENCRYPT];';
$init_decrypt = '$kd = $self->keys[self::DECRYPT];';
break;
}
// Creating code for en- and decryption.
$crypt_block = array();
foreach (array(CRYPT_DES_ENCRYPT, CRYPT_DES_DECRYPT) as $c) {
foreach (array(self::ENCRYPT, self::DECRYPT) as $c) {
/* Do the initial IP permutation. */
$crypt_block[$c] = '
$in = unpack("N*", $in);
@ -1521,8 +1441,8 @@ class Crypt_DES extends Crypt_Base {
'init_crypt' => $init_crypt,
'init_encrypt' => $init_encrypt,
'init_decrypt' => $init_decrypt,
'encrypt_block' => $crypt_block[CRYPT_DES_ENCRYPT],
'decrypt_block' => $crypt_block[CRYPT_DES_DECRYPT]
'encrypt_block' => $crypt_block[self::ENCRYPT],
'decrypt_block' => $crypt_block[self::DECRYPT]
)
);
}
@ -1531,6 +1451,3 @@ class Crypt_DES extends Crypt_Base {
$this->inline_crypt = $lambda_functions[$code_hash];
}
}
// vim: ts=4:sw=4:et:
// vim6: fdl=1:

708
plugins/OStatus/extlib/phpseclib/Crypt/Hash.php
View File

@ -1,27 +1,19 @@
<?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.
* Wrapper around hash() and hash_hmac() functions supporting truncated hashes
* such as sha256-96. Any hash algorithm returned by hash_algos() (and
* truncated versions thereof) are supported.
*
* 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}.}}
* If {@link self::setKey() setKey()} is called, {@link self::hash() hash()} will
* return the HMAC as opposed to the hash.
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/Hash.php');
* include 'vendor/autoload.php';
*
* $hash = new Crypt_Hash('sha1');
* $hash = new \phpseclib\Crypt\Hash('sha512');
*
* $hash->setKey('abcdefg');
*
@ -29,82 +21,52 @@
* ?>
* </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
* @package Hash
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @copyright 2015 Jim Wigginton
* @author Andreas Fischer <bantu@phpbb.com>
* @copyright 2015 Andreas Fischer
* @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);
/**#@-*/
namespace phpseclib\Crypt;
use phpseclib\Math\BigInteger;
use phpseclib\Exception\UnsupportedAlgorithmException;
/**
* Pure-PHP implementations of keyed-hash message authentication codes (HMACs) and various cryptographic hashing functions.
*
* @package Hash
* @author Jim Wigginton <terrafrost@php.net>
* @version 0.1.0
* @author Andreas Fischer <bantu@phpbb.com>
* @access public
* @package Crypt_Hash
*/
class Crypt_Hash {
class Hash
{
/**
* Byte-length of compression blocks / key (Internal HMAC)
* Hash Parameter
*
* @see Crypt_Hash::setAlgorithm()
* @var Integer
* @see self::setHash()
* @var int
* @access private
*/
var $b;
var $hashParam;
/**
* Byte-length of hash output (Internal HMAC)
*
* @see Crypt_Hash::setHash()
* @var Integer
* @see self::setHash()
* @var int
* @access private
*/
var $l = false;
var $length;
/**
* Hash Algorithm
*
* @see Crypt_Hash::setHash()
* @var String
* @see self::setHash()
* @var string
* @access private
*/
var $hash;
@ -112,17 +74,30 @@ class Crypt_Hash {
/**
* Key
*
* @see Crypt_Hash::setKey()
* @var String
* @see self::setKey()
* @var string
* @access private
*/
var $key = false;
/**
* Initial Hash
*
* Used only for sha512/*
*
* @see self::_sha512()
* @var array
* @access private
*/
var $initial = false;
/**
* Outer XOR (Internal HMAC)
*
* @see Crypt_Hash::setKey()
* @var String
* Used only for sha512/*
*
* @see self::hash()
* @var string
* @access private
*/
var $opad;
@ -130,8 +105,10 @@ class Crypt_Hash {
/**
* Inner XOR (Internal HMAC)
*
* @see Crypt_Hash::setKey()
* @var String
* Used only for sha512/*
*
* @see self::hash()
* @var string
* @access private
*/
var $ipad;
@ -139,26 +116,15 @@ class Crypt_Hash {
/**
* Default Constructor.
*
* @param optional String $hash
* @return Crypt_Hash
* @param string $hash
* @access public
*/
function Crypt_Hash($hash = 'sha1')
function __construct($hash = 'sha256')
{
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);
$this->ipad = str_repeat(chr(0x36), 128);
$this->opad = str_repeat(chr(0x5C), 128);
}
/**
@ -167,421 +133,171 @@ class Crypt_Hash {
* Keys can be of any length.
*
* @access public
* @param optional String $key
* @param string $key
*/
function setKey($key = false)
{
$this->key = $key;
}
/**
* Gets the hash function.
*
* As set by the constructor or by the setHash() method.
*
* @access public
* @return string
*/
function getHash()
{
return $this->hashParam;
}
/**
* Sets the hash function.
*
* @access public
* @param String $hash
* @param string $hash
*/
function setHash($hash)
{
$hash = strtolower($hash);
$this->hashParam = $hash = strtolower($hash);
switch ($hash) {
case 'md2-96':
case 'md5-96':
case 'sha1-96':
$this->l = 12; // 96 / 8 = 12
case 'sha256-96':
case 'sha512-96':
case 'sha512/224-96':
case 'sha512/256-96':
$hash = substr($hash, 0, -3);
$this->length = 12; // 96 / 8 = 12
break;
case 'md2':
case 'md5':
$this->l = 16;
$this->length = 16;
break;
case 'sha1':
$this->l = 20;
$this->length = 20;
break;
case 'sha224':
case 'sha512/224':
$this->length = 28;
break;
case 'sha256':
$this->l = 32;
case 'sha512/256':
$this->length = 32;
break;
case 'sha384':
$this->l = 48;
$this->length = 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;
$this->length = 64;
break;
default:
$mode = CRYPT_HASH_MODE;
// see if the hash isn't "officially" supported see if it can
// be "unofficially" supported and calculate the length
// accordingly.
if (in_array($hash, hash_algos())) {
$this->length = strlen(hash($hash, '', true));
break;
}
// if the hash algorithm doens't exist maybe it's a truncated
// hash, e.g. whirlpool-12 or some such.
if (preg_match('#(-\d+)$#', $hash, $matches)) {
$hash = substr($hash, 0, -strlen($matches[1]));
if (in_array($hash, hash_algos())) {
$this->length = abs($matches[1]) >> 3;
break;
}
}
throw new UnsupportedAlgorithmException(
"$hash is not a supported algorithm"
);
}
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:
$this->hash = MHASH_SHA1;
if ($hash == 'sha512/224' || $hash == 'sha512/256') {
// from http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf#page=24
$this->initial = $hash == 'sha512/256' ?
array(
'22312194FC2BF72C', '9F555FA3C84C64C2', '2393B86B6F53B151', '963877195940EABD',
'96283EE2A88EFFE3', 'BE5E1E2553863992', '2B0199FC2C85B8AA', '0EB72DDC81C52CA2'
) :
array(
'8C3D37C819544DA2', '73E1996689DCD4D6', '1DFAB7AE32FF9C82', '679DD514582F9FCF',
'0F6D2B697BD44DA8', '77E36F7304C48942', '3F9D85A86A1D36C8', '1112E6AD91D692A1'
);
for ($i = 0; $i < 8; $i++) {
$this->initial[$i] = new BigInteger($this->initial[$i], 16);
$this->initial[$i]->setPrecision(64);
}
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
* @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, $this->key, true);
break;
case CRYPT_HASH_MODE_INTERNAL:
switch ($this->hash) {
case 'sha512/224':
case 'sha512/256':
if (empty($this->key) || !is_string($this->key)) {
return substr(self::_sha512($text, $this->initial), 0, $this->length);
}
/* "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;
$key = strlen($this->key) > $this->b ? self::_sha512($this->key, $this->initial) : $this->key;
$key = str_pad($key, $this->b, chr(0)); // step 1
$temp = $this->ipad ^ $key; // step 2
$key = str_pad($this->key, 128, chr(0)); // step 1
$temp = $this->ipad ^ $this->key; // step 2
$temp .= $text; // step 3
$temp = call_user_func($this->hash, $temp); // step 4
$output = $this->opad ^ $key; // step 5
$temp = self::_sha512($temp, $this->initial); // step 4
$output = $this->opad ^ $this->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);
}
}
$output = self::_sha512($output, $this->initial); // step 7
return substr($output, 0, $this->l);
return substr($output, 0, $this->length);
}
$output = !empty($this->key) || is_string($this->key) ?
hash_hmac($this->hash, $text, $this->key, true) :
hash($this->hash, $text, true);
return strlen($output) > $this->length
? substr($output, 0, $this->length)
: $output;
}
/**
* Returns the hash length (in bytes)
*
* @access public
* @return Integer
* @return int
*/
function getLength()
{
return $this->l;
return $this->length;
}
/**
* Wrapper for MD5
* Pure-PHP implementation of SHA512
*
* @access private
* @param String $m
* @param string $m
*/
function _md5($m)
static function _sha512($m, $hash)
{
return pack('H*', md5($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;
static $k;
if (!isset($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)
$k = array(
@ -608,12 +324,10 @@ class Crypt_Hash {
);
for ($i = 0; $i < 80; $i++) {
$k[$i] = new Math_BigInteger($k[$i], 16);
$k[$i] = new 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
@ -627,7 +341,7 @@ class Crypt_Hash {
foreach ($chunks as $chunk) {
$w = array();
for ($i = 0; $i < 16; $i++) {
$temp = new Math_BigInteger($this->_string_shift($chunk, 8), 256);
$temp = new BigInteger(self::_string_shift($chunk, 8), 256);
$temp->setPrecision(64);
$w[] = $temp;
}
@ -648,21 +362,21 @@ class Crypt_Hash {
);
$s1 = $temp[0]->bitwise_xor($temp[1]);
$s1 = $s1->bitwise_xor($temp[2]);
$w[$i] = $w[$i - 16]->copy();
$w[$i] = clone $w[$i - 16];
$w[$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();
$a = clone $hash[0];
$b = clone $hash[1];
$c = clone $hash[2];
$d = clone $hash[3];
$e = clone $hash[4];
$f = clone $hash[5];
$g = clone $hash[6];
$h = clone $hash[7];
// Main loop
for ($i = 0; $i < 80; $i++) {
@ -699,13 +413,13 @@ class Crypt_Hash {
$t1 = $t1->add($k[$i]);
$t1 = $t1->add($w[$i]);
$h = $g->copy();
$g = $f->copy();
$f = $e->copy();
$h = clone $g;
$g = clone $f;
$f = clone $e;
$e = $d->add($t1);
$d = $c->copy();
$c = $b->copy();
$b = $a->copy();
$d = clone $c;
$c = clone $b;
$b = clone $a;
$a = $t1->add($t2);
}
@ -723,98 +437,24 @@ class Crypt_Hash {
}
// 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)
// (\phpseclib\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();
}
$hash[4]->toBytes() . $hash[5]->toBytes() . $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
* @param string $string
* @param int $index
* @return string
* @access private
*/
function _string_shift(&$string, $index = 1)
static function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);

412
plugins/OStatus/extlib/phpseclib/Crypt/RC2.php
View File

@ -1,12 +1,11 @@
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementation of RC2.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP versions 4 and 5
* PHP version 5
*
* Useful resources are as follows:
*
@ -15,9 +14,9 @@
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/RC2.php');
* include 'vendor/autoload.php';
*
* $rc2 = new Crypt_RC2();
* $rc2 = new \phpseclib\Crypt\RC2();
*
* $rc2->setKey('abcdefgh');
*
@ -27,106 +26,28 @@
* ?>
* </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_RC2
* @package RC2
* @author Patrick Monnerat <pm@datasphere.ch>
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
/**
* Include Crypt_Base
*
* Base cipher class
*/
if (!class_exists('Crypt_Base')) {
require_once('Base.php');
}
/**#@+
* @access public
* @see Crypt_RC2::encrypt()
* @see Crypt_RC2::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_RC2_MODE_CTR', CRYPT_MODE_CTR);
/**
* Encrypt / decrypt using the Electronic Code Book mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
*/
define('CRYPT_RC2_MODE_ECB', CRYPT_MODE_ECB);
/**
* Encrypt / decrypt using the Code Book Chaining mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
*/
define('CRYPT_RC2_MODE_CBC', CRYPT_MODE_CBC);
/**
* Encrypt / decrypt using the Cipher Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
*/
define('CRYPT_RC2_MODE_CFB', CRYPT_MODE_CFB);
/**
* Encrypt / decrypt using the Cipher Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
*/
define('CRYPT_RC2_MODE_OFB', CRYPT_MODE_OFB);
/**#@-*/
/**#@+
* @access private
* @see Crypt_RC2::Crypt_RC2()
*/
/**
* Toggles the internal implementation
*/
define('CRYPT_RC2_MODE_INTERNAL', CRYPT_MODE_INTERNAL);
/**
* Toggles the mcrypt implementation
*/
define('CRYPT_RC2_MODE_MCRYPT', CRYPT_MODE_MCRYPT);
/**#@-*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of RC2.
*
* @version 0.1.1
* @package RC2
* @access public
* @package Crypt_RC2
*/
class Crypt_RC2 extends Crypt_Base {
class RC2 extends Base
{
/**
* Block Length of the cipher
*
* @see Crypt_Base::block_size
* @var Integer
* @see \phpseclib\Crypt\Base::block_size
* @var int
* @access private
*/
var $block_size = 8;
@ -134,37 +55,48 @@ class Crypt_RC2 extends Crypt_Base {
/**
* The Key
*
* @see Crypt_Base::key
* @see setKey()
* @var String
* @see \phpseclib\Crypt\Base::key
* @see self::setKey()
* @var string
* @access private
*/
var $key = "\0";
var $key;
/**
* The default password key_size used by setPassword()
* The Original (unpadded) Key
*
* @see Crypt_Base::password_key_size
* @see Crypt_Base::setPassword()
* @var Integer
* @see \phpseclib\Crypt\Base::key
* @see self::setKey()
* @see self::encrypt()
* @see self::decrypt()
* @var string
* @access private
*/
var $password_key_size = 16; // = 128 bits
var $orig_key;
/**
* The namespace used by the cipher for its constants.
* Don't truncate / null pad key
*
* @see Crypt_Base::const_namespace
* @var String
* @see \phpseclib\Crypt\Base::_clearBuffers()
* @var bool
* @access private
*/
var $const_namespace = 'RC2';
var $skip_key_adjustment = true;
/**
* Key Length (in bytes)
*
* @see \phpseclib\Crypt\RC2::setKeyLength()
* @var int
* @access private
*/
var $key_length = 16; // = 128 bits
/**
* The mcrypt specific name of the cipher
*
* @see Crypt_Base::cipher_name_mcrypt
* @var String
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'rc2';
@ -172,29 +104,40 @@ class Crypt_RC2 extends Crypt_Base {
/**
* Optimizing value while CFB-encrypting
*
* @see Crypt_Base::cfb_init_len
* @var Integer
* @see \phpseclib\Crypt\Base::cfb_init_len
* @var int
* @access private
*/
var $cfb_init_len = 500;
/**
/**
* The key length in bits.
*
* @see Crypt_RC2::setKeyLength()
* @see Crypt_RC2::setKey()
* @var Integer
* @see self::setKeyLength()
* @see self::setKey()
* @var int
* @access private
* @internal Should be in range [1..1024].
* @internal Changing this value after setting the key has no effect.
*/
var $default_key_length = 1024;
/**
* The key length in bits.
*
* @see self::isValidEnine()
* @see self::setKey()
* @var int
* @access private
* @internal Should be in range [1..1024].
*/
var $current_key_length;
/**
* The Key Schedule
*
* @see Crypt_RC2::_setupKey()
* @var Array
* @see self::_setupKey()
* @var array
* @access private
*/
var $keys;
@ -203,8 +146,8 @@ class Crypt_RC2 extends Crypt_Base {
* Key expansion randomization table.
* Twice the same 256-value sequence to save a modulus in key expansion.
*
* @see Crypt_RC2::setKey()
* @var Array
* @see self::setKey()
* @var array
* @access private
*/
var $pitable = array(
@ -277,8 +220,8 @@ class Crypt_RC2 extends Crypt_Base {
/**
* Inverse key expansion randomization table.
*
* @see Crypt_RC2::setKey()
* @var Array
* @see self::setKey()
* @var array
* @access private
*/
var $invpitable = array(
@ -319,53 +262,78 @@ class Crypt_RC2 extends Crypt_Base {
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* $mode could be:
*
* - CRYPT_RC2_MODE_ECB
*
* - CRYPT_RC2_MODE_CBC
*
* - CRYPT_RC2_MODE_CTR
*
* - CRYPT_RC2_MODE_CFB
*
* - CRYPT_RC2_MODE_OFB
*
* If not explictly set, CRYPT_RC2_MODE_CBC will be used.
*
* @see Crypt_Base::Crypt_Base()
* @param optional Integer $mode
* @param int $mode
* @access public
* @throws \InvalidArgumentException if an invalid / unsupported mode is provided
*/
function Crypt_RC2($mode = CRYPT_RC2_MODE_CBC)
function __construct($mode)
{
parent::Crypt_Base($mode);
$this->setKey('');
if ($mode == self::MODE_STREAM) {
throw new \InvalidArgumentException('Block ciphers cannot be ran in stream mode');
}
parent::__construct($mode);
}
/**
* Sets the key length
* Test for engine validity
*
* Valid key lengths are 1 to 1024.
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
*
* @see \phpseclib\Crypt\Base::__construct()
* @param int $engine
* @access public
* @return bool
*/
function isValidEngine($engine)
{
switch ($engine) {
case self::ENGINE_OPENSSL:
if ($this->current_key_length != 128 || strlen($this->orig_key) < 16) {
return false;
}
$this->cipher_name_openssl_ecb = 'rc2-ecb';
$this->cipher_name_openssl = 'rc2-' . $this->_openssl_translate_mode();
}
return parent::isValidEngine($engine);
}
/**
* Sets the key length.
*
* Valid key lengths are 8 to 1024.
* Calling this function after setting the key has no effect until the next
* Crypt_RC2::setKey() call.
* \phpseclib\Crypt\RC2::setKey() call.
*
* @access public
* @param Integer $length in bits
* @param int $length in bits
* @throws \LengthException if the key length isn't supported
*/
function setKeyLength($length)
{
if ($length >= 1 && $length <= 1024) {
$this->default_key_length = $length;
if ($length < 8 || $length > 1024) {
throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys between 1 and 1024 bits, inclusive, are supported');
}
$this->default_key_length = $this->current_key_length = $length;
}
/**
* Returns the current key length
*
* @access public
* @return int
*/
function getKeyLength()
{
return $this->current_key_length;
}
/**
* Sets the key.
*
* Keys can be of any length. RC2, itself, uses 1 to 1024 bit keys (eg.
* Keys can be of any length. RC2, itself, uses 8 to 1024 bit keys (eg.
* strlen($key) <= 128), however, we only use the first 128 bytes if $key
* has more then 128 bytes in it, and set $key to a single null byte if
* it is empty.
@ -373,20 +341,27 @@ class Crypt_RC2 extends Crypt_Base {
* If the key is not explicitly set, it'll be assumed to be a single
* null byte.
*
* @see Crypt_Base::setKey()
* @see \phpseclib\Crypt\Base::setKey()
* @access public
* @param String $key
* @param Integer $t1 optional Effective key length in bits.
* @param string $key
* @param int $t1 optional Effective key length in bits.
* @throws \LengthException if the key length isn't supported
*/
function setKey($key, $t1 = 0)
function setKey($key, $t1 = false)
{
if ($t1 <= 0) {
$this->orig_key = $key;
if ($t1 === false) {
$t1 = $this->default_key_length;
} else if ($t1 > 1024) {
$t1 = 1024;
}
if ($t1 < 1 || $t1 > 1024) {
throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys between 1 and 1024 bits, inclusive, are supported');
}
$this->current_key_length = $t1;
// Key byte count should be 1..128.
$key = strlen($key) ? substr($key, 0, 128): "\x00";
$key = strlen($key) ? substr($key, 0, 128) : "\x00";
$t = strlen($key);
// The mcrypt RC2 implementation only supports effective key length
@ -414,17 +389,64 @@ class Crypt_RC2 extends Crypt_Base {
// Prepare the key for mcrypt.
$l[0] = $this->invpitable[$l[0]];
array_unshift($l, 'C*');
parent::setKey(call_user_func_array('pack', $l));
}
/**
* Encrypts a message.
*
* Mostly a wrapper for \phpseclib\Crypt\Base::encrypt, with some additional OpenSSL handling code
*
* @see self::decrypt()
* @access public
* @param string $plaintext
* @return string $ciphertext
*/
function encrypt($plaintext)
{
if ($this->engine == self::ENGINE_OPENSSL) {
$temp = $this->key;
$this->key = $this->orig_key;
$result = parent::encrypt($plaintext);
$this->key = $temp;
return $result;
}
return parent::encrypt($plaintext);
}
/**
* Decrypts a message.
*
* Mostly a wrapper for \phpseclib\Crypt\Base::decrypt, with some additional OpenSSL handling code
*
* @see self::encrypt()
* @access public
* @param string $ciphertext
* @return string $plaintext
*/
function decrypt($ciphertext)
{
if ($this->engine == self::ENGINE_OPENSSL) {
$temp = $this->key;
$this->key = $this->orig_key;
$result = parent::decrypt($ciphertext);
$this->key = $temp;
return $result;
}
return parent::decrypt($ciphertext);
}
/**
* Encrypts a block
*
* @see Crypt_Base::_encryptBlock()
* @see Crypt_Base::encrypt()
* @see \phpseclib\Crypt\Base::_encryptBlock()
* @see \phpseclib\Crypt\Base::encrypt()
* @access private
* @param String $in
* @return String
* @param string $in
* @return string
*/
function _encryptBlock($in)
{
@ -445,8 +467,8 @@ class Crypt_RC2 extends Crypt_Base {
$r3 = (($r3 + $keys[$j++] + ((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF) << 5;
$r3 |= $r3 >> 16;
if ($j == $limit) {
if ($limit == 64) {
if ($j === $limit) {
if ($limit === 64) {
break;
}
@ -465,11 +487,11 @@ class Crypt_RC2 extends Crypt_Base {
/**
* Decrypts a block
*
* @see Crypt_Base::_decryptBlock()
* @see Crypt_Base::decrypt()
* @see \phpseclib\Crypt\Base::_decryptBlock()
* @see \phpseclib\Crypt\Base::decrypt()
* @access private
* @param String $in
* @return String
* @param string $in
* @return string
*/
function _decryptBlock($in)
{
@ -490,8 +512,8 @@ class Crypt_RC2 extends Crypt_Base {
$r0 = ($r0 | ($r0 << 16)) >> 1;
$r0 = ($r0 - $keys[--$j] - ((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF;
if ($j == $limit) {
if (!$limit) {
if ($j === $limit) {
if ($limit === 0) {
break;
}
@ -507,15 +529,34 @@ class Crypt_RC2 extends Crypt_Base {
return pack('vvvv', $r0, $r1, $r2, $r3);
}
/**
* Setup the \phpseclib\Crypt\Base::ENGINE_MCRYPT $engine
*
* @see \phpseclib\Crypt\Base::_setupMcrypt()
* @access private
*/
function _setupMcrypt()
{
if (!isset($this->key)) {
$this->setKey('');
}
parent::_setupMcrypt();
}
/**
* Creates the key schedule
*
* @see Crypt_Base::_setupKey()
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
{
// Key has already been expanded in Crypt_RC2::setKey():
if (!isset($this->key)) {
$this->setKey('');
}
// Key has already been expanded in \phpseclib\Crypt\RC2::setKey():
// Only the first value must be altered.
$l = unpack('Ca/Cb/v*', $this->key);
array_unshift($l, $this->pitable[$l['a']] | ($l['b'] << 8));
@ -527,24 +568,24 @@ class Crypt_RC2 extends Crypt_Base {
/**
* Setup the performance-optimized function for de/encrypt()
*
* @see Crypt_Base::_setupInlineCrypt()
* @see \phpseclib\Crypt\Base::_setupInlineCrypt()
* @access private
*/
function _setupInlineCrypt()
{
$lambda_functions = &Crypt_RC2::_getLambdaFunctions();
$lambda_functions =& self::_getLambdaFunctions();
// The first 10 generated $lambda_functions will use the $keys hardcoded as integers
// for the mixing rounds, for better inline crypt performance [~20% faster].
// But for memory reason we have to limit those ultra-optimized $lambda_functions to an amount of 10.
$keys = $this->keys;
if (count($lambda_functions) >= 10) {
foreach ($this->keys as $k => $v) {
$keys[$k] = '$keys[' . $k . ']';
}
}
// (Currently, for Crypt_RC2, one generated $lambda_function cost on php5.5@32bit ~60kb unfreeable mem and ~100kb on php5.5@64bit)
$gen_hi_opt_code = (bool)(count($lambda_functions) < 10);
$code_hash = md5(str_pad("Crypt_RC2, {$this->mode}, ", 32, "\0") . implode(',', $keys));
// Generation of a uniqe hash for our generated code
$code_hash = "Crypt_RC2, {$this->mode}";
if ($gen_hi_opt_code) {
$code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key);
}
// Is there a re-usable $lambda_functions in there?
// If not, we have to create it.
@ -552,6 +593,16 @@ class Crypt_RC2 extends Crypt_Base {
// Init code for both, encrypt and decrypt.
$init_crypt = '$keys = $self->keys;';
switch (true) {
case $gen_hi_opt_code:
$keys = $this->keys;
default:
$keys = array();
foreach ($this->keys as $k => $v) {
$keys[$k] = '$keys[' . $k . ']';
}
}
// $in is the current 8 bytes block which has to be en/decrypt
$encrypt_block = $decrypt_block = '
$in = unpack("v4", $in);
@ -582,8 +633,8 @@ class Crypt_RC2 extends Crypt_Base {
((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF) << 5;
$r3 |= $r3 >> 16;';
if ($j == $limit) {
if ($limit == 64) {
if ($j === $limit) {
if ($limit === 64) {
break;
}
@ -620,8 +671,8 @@ class Crypt_RC2 extends Crypt_Base {
$r0 = ($r0 - ' . $keys[--$j] . ' -
((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF;';
if ($j == $limit) {
if (!$limit) {
if ($j === $limit) {
if ($limit === 0) {
break;
}
@ -651,6 +702,3 @@ class Crypt_RC2 extends Crypt_Base {
$this->inline_crypt = $lambda_functions[$code_hash];
}
}
// vim: ts=4:sw=4:et:
// vim6: fdl=1:

280
plugins/OStatus/extlib/phpseclib/Crypt/RC4.php
View File

@ -1,12 +1,11 @@
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementation of RC4.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP versions 4 and 5
* PHP version 5
*
* Useful resources are as follows:
*
@ -19,9 +18,9 @@
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/RC4.php');
* include 'vendor/autoload.php';
*
* $rc4 = new Crypt_RC4();
* $rc4 = new \phpseclib\Crypt\RC4();
*
* $rc4->setKey('abcdefgh');
*
@ -35,109 +34,59 @@
* ?>
* </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_RC4
* @package RC4
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
/**
* Include Crypt_Base
*
* Base cipher class
*/
if (!class_exists('Crypt_Base')) {
require_once('Base.php');
}
/**#@+
* @access private
* @see Crypt_RC4::Crypt_RC4()
*/
/**
* Toggles the internal implementation
*/
define('CRYPT_RC4_MODE_INTERNAL', CRYPT_MODE_INTERNAL);
/**
* Toggles the mcrypt implementation
*/
define('CRYPT_RC4_MODE_MCRYPT', CRYPT_MODE_MCRYPT);
/**#@-*/
/**#@+
* @access private
* @see Crypt_RC4::_crypt()
*/
define('CRYPT_RC4_ENCRYPT', 0);
define('CRYPT_RC4_DECRYPT', 1);
/**#@-*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of RC4.
*
* @package RC4
* @author Jim Wigginton <terrafrost@php.net>
* @version 0.1.0
* @access public
* @package Crypt_RC4
*/
class Crypt_RC4 extends Crypt_Base {
class RC4 extends Base
{
/**#@+
* @access private
* @see \phpseclib\Crypt\RC4::_crypt()
*/
const ENCRYPT = 0;
const DECRYPT = 1;
/**#@-*/
/**
* Block Length of the cipher
*
* RC4 is a stream cipher
* so we the block_size to 0
*
* @see Crypt_Base::block_size
* @var Integer
* @see \phpseclib\Crypt\Base::block_size
* @var int
* @access private
*/
var $block_size = 0;
/**
* The default password key_size used by setPassword()
* Key Length (in bytes)
*
* @see Crypt_Base::password_key_size
* @see Crypt_Base::setPassword()
* @var Integer
* @see \phpseclib\Crypt\RC4::setKeyLength()
* @var int
* @access private
*/
var $password_key_size = 128; // = 1024 bits
/**
* The namespace used by the cipher for its constants.
*
* @see Crypt_Base::const_namespace
* @var String
* @access private
*/
var $const_namespace = 'RC4';
var $key_length = 128; // = 1024 bits
/**
* The mcrypt specific name of the cipher
*
* @see Crypt_Base::cipher_name_mcrypt
* @var String
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'arcfour';
@ -145,7 +94,7 @@ class Crypt_RC4 extends Crypt_Base {
/**
* Holds whether performance-optimized $inline_crypt() can/should be used.
*
* @see Crypt_Base::inline_crypt
* @see \phpseclib\Crypt\Base::inline_crypt
* @var mixed
* @access private
*/
@ -154,8 +103,8 @@ class Crypt_RC4 extends Crypt_Base {
/**
* The Key
*
* @see Crypt_RC4::setKey()
* @var String
* @see self::setKey()
* @var string
* @access private
*/
var $key = "\0";
@ -163,8 +112,8 @@ class Crypt_RC4 extends Crypt_Base {
/**
* The Key Stream for decryption and encryption
*
* @see Crypt_RC4::setKey()
* @var Array
* @see self::setKey()
* @var array
* @access private
*/
var $stream;
@ -172,107 +121,167 @@ class Crypt_RC4 extends Crypt_Base {
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* @see Crypt_Base::Crypt_Base()
* @return Crypt_RC4
* @see \phpseclib\Crypt\Base::__construct()
* @return \phpseclib\Crypt\RC4
* @access public
*/
function Crypt_RC4()
function __construct()
{
parent::Crypt_Base(CRYPT_MODE_STREAM);
parent::__construct(Base::MODE_STREAM);
}
/**
* Dummy function.
* Test for engine validity
*
* Some protocols, such as WEP, prepend an "initialization vector" to the key, effectively creating a new key [1].
* If you need to use an initialization vector in this manner, feel free to prepend it to the key, yourself, before
* calling setKey().
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
*
* [1] WEP's initialization vectors (IV's) are used in a somewhat insecure way. Since, in that protocol,
* the IV's are relatively easy to predict, an attack described by
* {@link http://www.drizzle.com/~aboba/IEEE/rc4_ksaproc.pdf Scott Fluhrer, Itsik Mantin, and Adi Shamir}
* can be used to quickly guess at the rest of the key. The following links elaborate:
*
* {@link http://www.rsa.com/rsalabs/node.asp?id=2009 http://www.rsa.com/rsalabs/node.asp?id=2009}
* {@link http://en.wikipedia.org/wiki/Related_key_attack http://en.wikipedia.org/wiki/Related_key_attack}
*
* @param String $iv
* @see Crypt_RC4::setKey()
* @see \phpseclib\Crypt\Base::__construct()
* @param int $engine
* @access public
* @return bool
*/
function setIV($iv)
function isValidEngine($engine)
{
switch ($engine) {
case Base::ENGINE_OPENSSL:
switch (strlen($this->key)) {
case 5:
$this->cipher_name_openssl = 'rc4-40';
break;
case 8:
$this->cipher_name_openssl = 'rc4-64';
break;
case 16:
$this->cipher_name_openssl = 'rc4';
break;
default:
return false;
}
}
return parent::isValidEngine($engine);
}
/**
* Sets the key.
*
* Keys can be between 1 and 256 bytes long. If they are longer then 256 bytes, the first 256 bytes will
* be used. If no key is explicitly set, it'll be assumed to be a single null byte.
* RC4 does not use an IV
*
* @access public
* @see Crypt_Base::setKey()
* @param String $key
* @return bool
*/
function usesIV()
{
return false;
}
/**
* Sets the key length
*
* Keys can be between 1 and 256 bytes long.
*
* @access public
* @param int $length
* @throws \LengthException if the key length is invalid
*/
function setKeyLength($length)
{
if ($length < 8 || $length > 2048) {
throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys between 1 and 256 bytes are supported');
}
$this->key_length = $length >> 3;
parent::setKeyLength($length);
}
/**
* Sets the key length
*
* Keys can be between 1 and 256 bytes long.
*
* @access public
* @param int $length
* @throws \LengthException if the key length is invalid
*/
function setKey($key)
{
parent::setKey(substr($key, 0, 256));
$length = strlen($key);
if ($length < 1 || $length > 256) {
throw new \LengthException('Key size of ' . $length . ' bytes is not supported by RC4. Keys must be between 1 and 256 bytes long');
}
parent::setKey($key);
}
/**
* Encrypts a message.
*
* @see Crypt_Base::decrypt()
* @see Crypt_RC4::_crypt()
* @see \phpseclib\Crypt\Base::decrypt()
* @see self::_crypt()
* @access public
* @param String $plaintext
* @return String $ciphertext
* @param string $plaintext
* @return string $ciphertext
*/
function encrypt($plaintext)
{
if ($this->engine == CRYPT_MODE_MCRYPT) {
if ($this->engine != Base::ENGINE_INTERNAL) {
return parent::encrypt($plaintext);
}
return $this->_crypt($plaintext, CRYPT_RC4_ENCRYPT);
return $this->_crypt($plaintext, self::ENCRYPT);
}
/**
* Decrypts a message.
*
* $this->decrypt($this->encrypt($plaintext)) == $this->encrypt($this->encrypt($plaintext)).
* Atleast if the continuous buffer is disabled.
* At least if the continuous buffer is disabled.
*
* @see Crypt_Base::encrypt()
* @see Crypt_RC4::_crypt()
* @see \phpseclib\Crypt\Base::encrypt()
* @see self::_crypt()
* @access public
* @param String $ciphertext
* @return String $plaintext
* @param string $ciphertext
* @return string $plaintext
*/
function decrypt($ciphertext)
{
if ($this->engine == CRYPT_MODE_MCRYPT) {
if ($this->engine != Base::ENGINE_INTERNAL) {
return parent::decrypt($ciphertext);
}
return $this->_crypt($ciphertext, CRYPT_RC4_DECRYPT);
return $this->_crypt($ciphertext, self::DECRYPT);
}
/**
* Encrypts a block
*
* @access private
* @param string $in
*/
function _encryptBlock($in)
{
// RC4 does not utilize this method
}
/**
* Decrypts a block
*
* @access private
* @param string $in
*/
function _decryptBlock($in)
{
// RC4 does not utilize this method
}
/**
* Setup the key (expansion)
*
* @see Crypt_Base::_setupKey()
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
{
$key = $this->key;
$keyLength = strlen($key);
$keyStream = array();
for ($i = 0; $i < 256; $i++) {
$keyStream[$i] = $i;
}
$keyStream = range(0, 255);
$j = 0;
for ($i = 0; $i < 256; $i++) {
$j = ($j + $keyStream[$i] + ord($key[$i % $keyLength])) & 255;
@ -282,7 +291,7 @@ class Crypt_RC4 extends Crypt_Base {
}
$this->stream = array();
$this->stream[CRYPT_RC4_DECRYPT] = $this->stream[CRYPT_RC4_ENCRYPT] = array(
$this->stream[self::DECRYPT] = $this->stream[self::ENCRYPT] = array(
0, // index $i
0, // index $j
$keyStream
@ -292,12 +301,12 @@ class Crypt_RC4 extends Crypt_Base {
/**
* Encrypts or decrypts a message.
*
* @see Crypt_RC4::encrypt()
* @see Crypt_RC4::decrypt()
* @see self::encrypt()
* @see self::decrypt()
* @access private
* @param String $text
* @param Integer $mode
* @return String $text
* @param string $text
* @param int $mode
* @return string $text
*/
function _crypt($text, $mode)
{
@ -326,12 +335,9 @@ class Crypt_RC4 extends Crypt_Base {
$keyStream[$i] = $ksj;
$keyStream[$j] = $ksi;
$text[$k] = chr(ord($text[$k]) ^ $keyStream[($ksj + $ksi) & 255]);
$text[$k] = $text[$k] ^ chr($keyStream[($ksj + $ksi) & 255]);
}
return $text;
}
}
// vim: ts=4:sw=4:et:
// vim6: fdl=1:

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plugins/OStatus/extlib/phpseclib/Crypt/RSA/MSBLOB.php Normal file
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@ -0,0 +1,224 @@
<?php
/**
* Miccrosoft BLOB Formatted RSA Key Handler
*
* More info:
*
* https://msdn.microsoft.com/en-us/library/windows/desktop/aa375601(v=vs.85).aspx
*
* PHP version 5
*
* @category Crypt
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt\RSA;
use ParagonIE\ConstantTime\Base64;
use phpseclib\Math\BigInteger;
/**
* Microsoft BLOB Formatted RSA Key Handler
*
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class MSBLOB
{
/**#@+
* @access private
*/
/**
* Public/Private Key Pair
*/
const PRIVATEKEYBLOB = 0x7;
/**
* Public Key
*/
const PUBLICKEYBLOB = 0x6;
/**
* Public Key
*/
const PUBLICKEYBLOBEX = 0xA;
/**
* RSA public key exchange algorithm
*/
const CALG_RSA_KEYX = 0x0000A400;
/**
* RSA public key exchange algorithm
*/
const CALG_RSA_SIGN = 0x00002400;
/**
* Public Key
*/
const RSA1 = 0x31415352;
/**
* Private Key
*/
const RSA2 = 0x32415352;
/**#@-*/
/**
* Break a public or private key down into its constituent components
*
* @access public
* @param string $key
* @param string $password optional
* @return array
*/
static function load($key, $password = '')
{
if (!is_string($key)) {
return false;
}
$key = Base64::decode($key);
if (!is_string($key) || strlen($key) < 20) {
return false;
}
// PUBLICKEYSTRUC publickeystruc
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa387453(v=vs.85).aspx
extract(unpack('atype/aversion/vreserved/Valgo', self::_string_shift($key, 8)));
switch (ord($type)) {
case self::PUBLICKEYBLOB:
case self::PUBLICKEYBLOBEX:
$publickey = true;
break;
case self::PRIVATEKEYBLOB:
$publickey = false;
break;
default:
return false;
}
$components = array('isPublicKey' => $publickey);
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa375549(v=vs.85).aspx
switch ($algo) {
case self::CALG_RSA_KEYX:
case self::CALG_RSA_SIGN:
break;
default:
return false;
}
// RSAPUBKEY rsapubkey
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa387685(v=vs.85).aspx
// could do V for pubexp but that's unsigned 32-bit whereas some PHP installs only do signed 32-bit
extract(unpack('Vmagic/Vbitlen/a4pubexp', self::_string_shift($key, 12)));
switch ($magic) {
case self::RSA2:
$components['isPublicKey'] = false;
case self::RSA1:
break;
default:
return false;
}
$baseLength = $bitlen / 16;
if (strlen($key) != 2 * $baseLength && strlen($key) != 9 * $baseLength) {
return false;
}
$components[$components['isPublicKey'] ? 'publicExponent' : 'privateExponent'] = new BigInteger(strrev($pubexp), 256);
// BYTE modulus[rsapubkey.bitlen/8]
$components['modulus'] = new BigInteger(strrev(self::_string_shift($key, $bitlen / 8)), 256);
if ($publickey) {
return $components;
}
$components['isPublicKey'] = false;
// BYTE prime1[rsapubkey.bitlen/16]
$components['primes'] = array(1 => new BigInteger(strrev(self::_string_shift($key, $bitlen / 16)), 256));
// BYTE prime2[rsapubkey.bitlen/16]
$components['primes'][] = new BigInteger(strrev(self::_string_shift($key, $bitlen / 16)), 256);
// BYTE exponent1[rsapubkey.bitlen/16]
$components['exponents'] = array(1 => new BigInteger(strrev(self::_string_shift($key, $bitlen / 16)), 256));
// BYTE exponent2[rsapubkey.bitlen/16]
$components['exponents'][] = new BigInteger(strrev(self::_string_shift($key, $bitlen / 16)), 256);
// BYTE coefficient[rsapubkey.bitlen/16]
$components['coefficients'] = array(2 => new BigInteger(strrev(self::_string_shift($key, $bitlen / 16)), 256));
if (isset($components['privateExponent'])) {
$components['publicExponent'] = $components['privateExponent'];
}
// BYTE privateExponent[rsapubkey.bitlen/8]
$components['privateExponent'] = new BigInteger(strrev(self::_string_shift($key, $bitlen / 8)), 256);
return $components;
}
/**
* Convert a private key to the appropriate format.
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @param \phpseclib\Math\BigInteger $d
* @param array $primes
* @param array $exponents
* @param array $coefficients
* @param string $password optional
* @return string
*/
static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, $primes, $exponents, $coefficients, $password = '')
{
$n = strrev($n->toBytes());
$e = str_pad(strrev($e->toBytes()), 4, "\0");
$key = pack('aavV', chr(self::PRIVATEKEYBLOB), chr(2), 0, self::CALG_RSA_KEYX);
$key.= pack('VVa*', self::RSA2, 8 * strlen($n), $e);
$key.= $n;
$key.= strrev($primes[1]->toBytes());
$key.= strrev($primes[2]->toBytes());
$key.= strrev($exponents[1]->toBytes());
$key.= strrev($exponents[2]->toBytes());
$key.= strrev($coefficients[1]->toBytes());
$key.= strrev($d->toBytes());
return Base64::encode($key);
}
/**
* Convert a public key to the appropriate format
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @return string
*/
static function savePublicKey(BigInteger $n, BigInteger $e)
{
$n = strrev($n->toBytes());
$e = str_pad(strrev($e->toBytes()), 4, "\0");
$key = pack('aavV', chr(self::PUBLICKEYBLOB), chr(2), 0, self::CALG_RSA_KEYX);
$key.= pack('VVa*', self::RSA1, 8 * strlen($n), $e);
$key.= $n;
return Base64::encode($key);
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param string $string
* @param int $index
* @return string
* @access private
*/
static function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
}

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plugins/OStatus/extlib/phpseclib/Crypt/RSA/OpenSSH.php Normal file
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@ -0,0 +1,141 @@
<?php
/**
* OpenSSH Formatted RSA Key Handler
*
* PHP version 5
*
* Place in $HOME/.ssh/authorized_keys
*
* @category Crypt
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt\RSA;
use ParagonIE\ConstantTime\Base64;
use phpseclib\Math\BigInteger;
/**
* OpenSSH Formatted RSA Key Handler
*
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class OpenSSH
{
/**
* Default comment
*
* @var string
* @access private
*/
static $comment = 'phpseclib-generated-key';
/**
* Sets the default comment
*
* @access public
* @param string $comment
*/
static function setComment($comment)
{
self::$comment = str_replace(array("\r", "\n"), '', $comment);
}
/**
* Break a public or private key down into its constituent components
*
* @access public
* @param string $key
* @param string $password optional
* @return array
*/
static function load($key, $password = '')
{
if (!is_string($key)) {
return false;
}
$parts = explode(' ', $key, 3);
$key = isset($parts[1]) ? Base64::decode($parts[1]) : Base64::decode($parts[0]);
if ($key === false) {
return false;
}
$comment = isset($parts[2]) ? $parts[2] : false;
if (substr($key, 0, 11) != "\0\0\0\7ssh-rsa") {
return false;
}
self::_string_shift($key, 11);
if (strlen($key) <= 4) {
return false;
}
extract(unpack('Nlength', self::_string_shift($key, 4)));
if (strlen($key) <= $length) {
return false;
}
$publicExponent = new BigInteger(self::_string_shift($key, $length), -256);
if (strlen($key) <= 4) {
return false;
}
extract(unpack('Nlength', self::_string_shift($key, 4)));
if (strlen($key) != $length) {
return false;
}
$modulus = new BigInteger(self::_string_shift($key, $length), -256);
return array(
'isPublicKey' => true,
'modulus' => $modulus,
'publicExponent' => $publicExponent,
'comment' => $comment
);
}
/**
* Convert a public key to the appropriate format
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @return string
*/
static function savePublicKey(BigInteger $n, BigInteger $e)
{
$publicExponent = $e->toBytes(true);
$modulus = $n->toBytes(true);
// from <http://tools.ietf.org/html/rfc4253#page-15>:
// string "ssh-rsa"
// mpint e
// mpint n
$RSAPublicKey = pack('Na*Na*Na*', strlen('ssh-rsa'), 'ssh-rsa', strlen($publicExponent), $publicExponent, strlen($modulus), $modulus);
$RSAPublicKey = 'ssh-rsa ' . Base64::encode($RSAPublicKey) . ' ' . self::$comment;
return $RSAPublicKey;
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param string $string
* @param int $index
* @return string
* @access private
*/
static function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
}

487
plugins/OStatus/extlib/phpseclib/Crypt/RSA/PKCS.php Normal file
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@ -0,0 +1,487 @@
<?php
/**
* PKCS Formatted RSA Key Handler
*
* PHP version 5
*
* @category Crypt
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt\RSA;
use ParagonIE\ConstantTime\Base64;
use ParagonIE\ConstantTime\Hex;
use phpseclib\Crypt\AES;
use phpseclib\Crypt\Base;
use phpseclib\Crypt\DES;
use phpseclib\Crypt\TripleDES;
use phpseclib\Math\BigInteger;
/**
* PKCS Formatted RSA Key Handler
*
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
abstract class PKCS
{
/**#@+
* @access private
* @see \phpseclib\Crypt\RSA::createKey()
*/
/**
* ASN1 Integer
*/
const ASN1_INTEGER = 2;
/**
* ASN1 Bit String
*/
const ASN1_BITSTRING = 3;
/**
* ASN1 Octet String
*/
const ASN1_OCTETSTRING = 4;
/**
* ASN1 Object Identifier
*/
const ASN1_OBJECT = 6;
/**
* ASN1 Sequence (with the constucted bit set)
*/
const ASN1_SEQUENCE = 48;
/**#@-*/
/**#@+
* @access private
*/
/**
* Auto-detect the format
*/
const MODE_ANY = 0;
/**
* Require base64-encoded PEM's be supplied
*/
const MODE_PEM = 1;
/**
* Require raw DER's be supplied
*/
const MODE_DER = 2;
/**#@-*/
/**
* Is the key a base-64 encoded PEM, DER or should it be auto-detected?
*
* @access private
* @param int
*/
static $format = self::MODE_ANY;
/**
* Returns the mode constant corresponding to the mode string
*
* @access public
* @param string $mode
* @return int
* @throws \UnexpectedValueException if the block cipher mode is unsupported
*/
static function getEncryptionMode($mode)
{
switch ($mode) {
case 'CBC':
return Base::MODE_CBC;
case 'ECB':
return Base::MODE_ECB;
case 'CFB':
return Base::MODE_CFB;
case 'OFB':
return Base::MODE_OFB;
case 'CTR':
return Base::MODE_CTR;
}
throw new \UnexpectedValueException('Unsupported block cipher mode of operation');
}
/**
* Returns a cipher object corresponding to a string
*
* @access public
* @param string $algo
* @return string
* @throws \UnexpectedValueException if the encryption algorithm is unsupported
*/
static function getEncryptionObject($algo)
{
$modes = '(CBC|ECB|CFB|OFB|CTR)';
switch (true) {
case preg_match("#^AES-(128|192|256)-$modes$#", $algo, $matches):
$cipher = new AES(self::getEncryptionMode($matches[2]));
$cipher->setKeyLength($matches[1]);
return $cipher;
case preg_match("#^DES-EDE3-$modes$#", $algo, $matches):
return new TripleDES(self::getEncryptionMode($matches[1]));
case preg_match("#^DES-$modes$#", $algo, $matches):
return new DES(self::getEncryptionMode($matches[1]));
default:
throw new \UnexpectedValueException('Unsupported encryption algorithmn');
}
}
/**
* Generate a symmetric key for PKCS#1 keys
*
* @access public
* @param string $password
* @param string $iv
* @param int $length
* @return string
*/
static function generateSymmetricKey($password, $iv, $length)
{
$symkey = '';
$iv = substr($iv, 0, 8);
while (strlen($symkey) < $length) {
$symkey.= md5($symkey . $password . $iv, true);
}
return substr($symkey, 0, $length);
}
/**
* Break a public or private key down into its constituent components
*
* @access public
* @param string $key
* @param string $password optional
* @return array
*/
static function load($key, $password = '')
{
if (!is_string($key)) {
return false;
}
$components = array('isPublicKey' => strpos($key, 'PUBLIC') !== false);
/* Although PKCS#1 proposes a format that public and private keys can use, encrypting them is
"outside the scope" of PKCS#1. PKCS#1 then refers you to PKCS#12 and PKCS#15 if you're wanting to
protect private keys, however, that's not what OpenSSL* does. OpenSSL protects private keys by adding
two new "fields" to the key - DEK-Info and Proc-Type. These fields are discussed here:
http://tools.ietf.org/html/rfc1421#section-4.6.1.1
http://tools.ietf.org/html/rfc1421#section-4.6.1.3
DES-EDE3-CBC as an algorithm, however, is not discussed anywhere, near as I can tell.
DES-CBC and DES-EDE are discussed in RFC1423, however, DES-EDE3-CBC isn't, nor is its key derivation
function. As is, the definitive authority on this encoding scheme isn't the IETF but rather OpenSSL's
own implementation. ie. the implementation *is* the standard and any bugs that may exist in that
implementation are part of the standard, as well.
* OpenSSL is the de facto standard. It's utilized by OpenSSH and other projects */
if (preg_match('#DEK-Info: (.+),(.+)#', $key, $matches)) {
$iv = Hex::decode(trim($matches[2]));
// remove the Proc-Type / DEK-Info sections as they're no longer needed
$key = preg_replace('#^(?:Proc-Type|DEK-Info): .*#m', '', $key);
$ciphertext = self::_extractBER($key);
if ($ciphertext === false) {
$ciphertext = $key;
}
$crypto = self::getEncryptionObject($matches[1]);
$crypto->setKey(self::generateSymmetricKey($password, $iv, $crypto->getKeyLength() >> 3));
$crypto->setIV($iv);
$key = $crypto->decrypt($ciphertext);
if ($key === false) {
return false;
}
} else {
if (self::$format != self::MODE_DER) {
$decoded = self::_extractBER($key);
if ($decoded !== false) {
$key = $decoded;
} elseif (self::$format == self::MODE_PEM) {
return false;
}
}
}
if (ord(self::_string_shift($key)) != self::ASN1_SEQUENCE) {
return false;
}
if (self::_decodeLength($key) != strlen($key)) {
return false;
}
$tag = ord(self::_string_shift($key));
/* intended for keys for which OpenSSL's asn1parse returns the following:
0:d=0 hl=4 l= 631 cons: SEQUENCE
4:d=1 hl=2 l= 1 prim: INTEGER :00
7:d=1 hl=2 l= 13 cons: SEQUENCE
9:d=2 hl=2 l= 9 prim: OBJECT :rsaEncryption
20:d=2 hl=2 l= 0 prim: NULL
22:d=1 hl=4 l= 609 prim: OCTET STRING
ie. PKCS8 keys */
if ($tag == self::ASN1_INTEGER && substr($key, 0, 3) == "\x01\x00\x30") {
self::_string_shift($key, 3);
$tag = self::ASN1_SEQUENCE;
}
if ($tag == self::ASN1_SEQUENCE) {
$temp = self::_string_shift($key, self::_decodeLength($key));
if (ord(self::_string_shift($temp)) != self::ASN1_OBJECT) {
return false;
}
$length = self::_decodeLength($temp);
switch (self::_string_shift($temp, $length)) {
case "\x2a\x86\x48\x86\xf7\x0d\x01\x01\x01": // rsaEncryption
break;
case "\x2a\x86\x48\x86\xf7\x0d\x01\x05\x03": // pbeWithMD5AndDES-CBC
/*
PBEParameter ::= SEQUENCE {
salt OCTET STRING (SIZE(8)),
iterationCount INTEGER }
*/
if (ord(self::_string_shift($temp)) != self::ASN1_SEQUENCE) {
return false;
}
if (self::_decodeLength($temp) != strlen($temp)) {
return false;
}
self::_string_shift($temp); // assume it's an octet string
$salt = self::_string_shift($temp, self::_decodeLength($temp));
if (ord(self::_string_shift($temp)) != self::ASN1_INTEGER) {
return false;
}
self::_decodeLength($temp);
list(, $iterationCount) = unpack('N', str_pad($temp, 4, chr(0), STR_PAD_LEFT));
self::_string_shift($key); // assume it's an octet string
$length = self::_decodeLength($key);
if (strlen($key) != $length) {
return false;
}
$crypto = new DES(DES::MODE_CBC);
$crypto->setPassword($password, 'pbkdf1', 'md5', $salt, $iterationCount);
$key = $crypto->decrypt($key);
if ($key === false) {
return false;
}
return self::load($key);
default:
return false;
}
/* intended for keys for which OpenSSL's asn1parse returns the following:
0:d=0 hl=4 l= 290 cons: SEQUENCE
4:d=1 hl=2 l= 13 cons: SEQUENCE
6:d=2 hl=2 l= 9 prim: OBJECT :rsaEncryption
17:d=2 hl=2 l= 0 prim: NULL
19:d=1 hl=4 l= 271 prim: BIT STRING */
$tag = ord(self::_string_shift($key)); // skip over the BIT STRING / OCTET STRING tag
self::_decodeLength($key); // skip over the BIT STRING / OCTET STRING length
// "The initial octet shall encode, as an unsigned binary integer wtih bit 1 as the least significant bit, the number of
// unused bits in the final subsequent octet. The number shall be in the range zero to seven."
// -- http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf (section 8.6.2.2)
if ($tag == self::ASN1_BITSTRING) {
self::_string_shift($key);
}
if (ord(self::_string_shift($key)) != self::ASN1_SEQUENCE) {
return false;
}
if (self::_decodeLength($key) != strlen($key)) {
return false;
}
$tag = ord(self::_string_shift($key));
}
if ($tag != self::ASN1_INTEGER) {
return false;
}
$length = self::_decodeLength($key);
$temp = self::_string_shift($key, $length);
if (strlen($temp) != 1 || ord($temp) > 2) {
$components['modulus'] = new BigInteger($temp, 256);
self::_string_shift($key); // skip over self::ASN1_INTEGER
$length = self::_decodeLength($key);
$components[$components['isPublicKey'] ? 'publicExponent' : 'privateExponent'] = new BigInteger(self::_string_shift($key, $length), 256);
return $components;
}
if (ord(self::_string_shift($key)) != self::ASN1_INTEGER) {
return false;
}
$length = self::_decodeLength($key);
$components['modulus'] = new BigInteger(self::_string_shift($key, $length), 256);
self::_string_shift($key);
$length = self::_decodeLength($key);
$components['publicExponent'] = new BigInteger(self::_string_shift($key, $length), 256);
self::_string_shift($key);
$length = self::_decodeLength($key);
$components['privateExponent'] = new BigInteger(self::_string_shift($key, $length), 256);
self::_string_shift($key);
$length = self::_decodeLength($key);
$components['primes'] = array(1 => new BigInteger(self::_string_shift($key, $length), 256));
self::_string_shift($key);
$length = self::_decodeLength($key);
$components['primes'][] = new BigInteger(self::_string_shift($key, $length), 256);
self::_string_shift($key);
$length = self::_decodeLength($key);
$components['exponents'] = array(1 => new BigInteger(self::_string_shift($key, $length), 256));
self::_string_shift($key);
$length = self::_decodeLength($key);
$components['exponents'][] = new BigInteger(self::_string_shift($key, $length), 256);
self::_string_shift($key);
$length = self::_decodeLength($key);
$components['coefficients'] = array(2 => new BigInteger(self::_string_shift($key, $length), 256));
if (!empty($key)) {
if (ord(self::_string_shift($key)) != self::ASN1_SEQUENCE) {
return false;
}
self::_decodeLength($key);
while (!empty($key)) {
if (ord(self::_string_shift($key)) != self::ASN1_SEQUENCE) {
return false;
}
self::_decodeLength($key);
$key = substr($key, 1);
$length = self::_decodeLength($key);
$components['primes'][] = new BigInteger(self::_string_shift($key, $length), 256);
self::_string_shift($key);
$length = self::_decodeLength($key);
$components['exponents'][] = new BigInteger(self::_string_shift($key, $length), 256);
self::_string_shift($key);
$length = self::_decodeLength($key);
$components['coefficients'][] = new BigInteger(self::_string_shift($key, $length), 256);
}
}
return $components;
}
/**
* Require base64-encoded PEM's be supplied
*
* @see self::load()
* @access public
*/
static function requirePEM()
{
self::$format = self::MODE_PEM;
}
/**
* Require raw DER's be supplied
*
* @see self::load()
* @access public
*/
static function requireDER()
{
self::$format = self::MODE_DER;
}
/**
* Accept any format and auto detect the format
*
* This is the default setting
*
* @see self::load()
* @access public
*/
static function requireAny()
{
self::$format = self::MODE_ANY;
}
/**
* DER-decode the length
*
* DER supports lengths up to (2**8)**127, however, we'll only support lengths up to (2**8)**4. See
* {@link http://itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#p=13 X.690 paragraph 8.1.3} for more information.
*
* @access private
* @param string $string
* @return int
*/
static function _decodeLength(&$string)
{
$length = ord(self::_string_shift($string));
if ($length & 0x80) { // definite length, long form
$length&= 0x7F;
$temp = self::_string_shift($string, $length);
list(, $length) = unpack('N', substr(str_pad($temp, 4, chr(0), STR_PAD_LEFT), -4));
}
return $length;
}
/**
* DER-encode the length
*
* DER supports lengths up to (2**8)**127, however, we'll only support lengths up to (2**8)**4. See
* {@link http://itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#p=13 X.690 paragraph 8.1.3} for more information.
*
* @access private
* @param int $length
* @return string
*/
static function _encodeLength($length)
{
if ($length <= 0x7F) {
return chr($length);
}
$temp = ltrim(pack('N', $length), chr(0));
return pack('Ca*', 0x80 | strlen($temp), $temp);
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param string $string
* @param int $index
* @return string
* @access private
*/
static function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
/**
* Extract raw BER from Base64 encoding
*
* @access private
* @param string $str
* @return string
*/
static function _extractBER($str)
{
/* X.509 certs are assumed to be base64 encoded but sometimes they'll have additional things in them
* above and beyond the ceritificate.
* ie. some may have the following preceding the -----BEGIN CERTIFICATE----- line:
*
* Bag Attributes
* localKeyID: 01 00 00 00
* subject=/O=organization/OU=org unit/CN=common name
* issuer=/O=organization/CN=common name
*/
$temp = preg_replace('#.*?^-+[^-]+-+[\r\n ]*$#ms', '', $str, 1);
// remove the -----BEGIN CERTIFICATE----- and -----END CERTIFICATE----- stuff
$temp = preg_replace('#-+[^-]+-+#', '', $temp);
// remove new lines
$temp = str_replace(array("\r", "\n", ' '), '', $temp);
$temp = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $temp) ? Base64::decode($temp) : false;
return $temp != false ? $temp : $str;
}
}

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<?php
/**
* PKCS#1 Formatted RSA Key Handler
*
* PHP version 5
*
* Used by File/X509.php
*
* Has the following header:
*
* -----BEGIN RSA PUBLIC KEY-----
*
* Analogous to ssh-keygen's pem format (as specified by -m)
*
* @category Crypt
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt\RSA;
use ParagonIE\ConstantTime\Base64;
use ParagonIE\ConstantTime\Hex;
use phpseclib\Crypt\AES;
use phpseclib\Crypt\DES;
use phpseclib\Crypt\Random;
use phpseclib\Crypt\TripleDES;
use phpseclib\Math\BigInteger;
/**
* PKCS#1 Formatted RSA Key Handler
*
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class PKCS1 extends PKCS
{
/**
* Default encryption algorithm
*
* @var string
* @access private
*/
static $defaultEncryptionAlgorithm = 'DES-EDE3-CBC';
/**
* Sets the default encryption algorithm
*
* @access public
* @param string $algo
*/
static function setEncryptionAlgorithm($algo)
{
self::$defaultEncryptionAlgorithm = $algo;
}
/**
* Convert a private key to the appropriate format.
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @param \phpseclib\Math\BigInteger $d
* @param array $primes
* @param array $exponents
* @param array $coefficients
* @param string $password optional
* @return string
*/
static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, $primes, $exponents, $coefficients, $password = '')
{
$num_primes = count($primes);
$raw = array(
'version' => $num_primes == 2 ? chr(0) : chr(1), // two-prime vs. multi
'modulus' => $n->toBytes(true),
'publicExponent' => $e->toBytes(true),
'privateExponent' => $d->toBytes(true),
'prime1' => $primes[1]->toBytes(true),
'prime2' => $primes[2]->toBytes(true),
'exponent1' => $exponents[1]->toBytes(true),
'exponent2' => $exponents[2]->toBytes(true),
'coefficient' => $coefficients[2]->toBytes(true)
);
$components = array();
foreach ($raw as $name => $value) {
$components[$name] = pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($value)), $value);
}
$RSAPrivateKey = implode('', $components);
if ($num_primes > 2) {
$OtherPrimeInfos = '';
for ($i = 3; $i <= $num_primes; $i++) {
// OtherPrimeInfos ::= SEQUENCE SIZE(1..MAX) OF OtherPrimeInfo
//
// OtherPrimeInfo ::= SEQUENCE {
// prime INTEGER, -- ri
// exponent INTEGER, -- di
// coefficient INTEGER -- ti
// }
$OtherPrimeInfo = pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($primes[$i]->toBytes(true))), $primes[$i]->toBytes(true));
$OtherPrimeInfo.= pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($exponents[$i]->toBytes(true))), $exponents[$i]->toBytes(true));
$OtherPrimeInfo.= pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($coefficients[$i]->toBytes(true))), $coefficients[$i]->toBytes(true));
$OtherPrimeInfos.= pack('Ca*a*', self::ASN1_SEQUENCE, self::_encodeLength(strlen($OtherPrimeInfo)), $OtherPrimeInfo);
}
$RSAPrivateKey.= pack('Ca*a*', self::ASN1_SEQUENCE, self::_encodeLength(strlen($OtherPrimeInfos)), $OtherPrimeInfos);
}
$RSAPrivateKey = pack('Ca*a*', self::ASN1_SEQUENCE, self::_encodeLength(strlen($RSAPrivateKey)), $RSAPrivateKey);
if (!empty($password) || is_string($password)) {
$cipher = self::getEncryptionObject(self::$defaultEncryptionAlgorithm);
$iv = Random::string($cipher->getBlockLength() >> 3);
$cipher->setKey(self::generateSymmetricKey($password, $iv, $cipher->getKeyLength() >> 3));
$cipher->setIV($iv);
$iv = strtoupper(Hex::encode($iv));
$RSAPrivateKey = "-----BEGIN RSA PRIVATE KEY-----\r\n" .
"Proc-Type: 4,ENCRYPTED\r\n" .
"DEK-Info: " . self::$defaultEncryptionAlgorithm . ",$iv\r\n" .
"\r\n" .
chunk_split(Base64::encode($cipher->encrypt($RSAPrivateKey)), 64) .
'-----END RSA PRIVATE KEY-----';
} else {
$RSAPrivateKey = "-----BEGIN RSA PRIVATE KEY-----\r\n" .
chunk_split(Base64::encode($RSAPrivateKey), 64) .
'-----END RSA PRIVATE KEY-----';
}
return $RSAPrivateKey;
}
/**
* Convert a public key to the appropriate format
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @return string
*/
static function savePublicKey(BigInteger $n, BigInteger $e)
{
$modulus = $n->toBytes(true);
$publicExponent = $e->toBytes(true);
// from <http://tools.ietf.org/html/rfc3447#appendix-A.1.1>:
// RSAPublicKey ::= SEQUENCE {
// modulus INTEGER, -- n
// publicExponent INTEGER -- e
// }
$components = array(
'modulus' => pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($modulus)), $modulus),
'publicExponent' => pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($publicExponent)), $publicExponent)
);
$RSAPublicKey = pack(
'Ca*a*a*',
self::ASN1_SEQUENCE,
self::_encodeLength(strlen($components['modulus']) + strlen($components['publicExponent'])),
$components['modulus'],
$components['publicExponent']
);
$RSAPublicKey = "-----BEGIN RSA PUBLIC KEY-----\r\n" .
chunk_split(Base64::encode($RSAPublicKey), 64) .
'-----END RSA PUBLIC KEY-----';
return $RSAPublicKey;
}
}

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<?php
/**
* PKCS#8 Formatted RSA Key Handler
*
* PHP version 5
*
* Used by PHP's openssl_public_encrypt() and openssl's rsautl (when -pubin is set)
*
* Has the following header:
*
* -----BEGIN PUBLIC KEY-----
*
* Analogous to ssh-keygen's pkcs8 format (as specified by -m). Although PKCS8
* is specific to private keys it's basically creating a DER-encoded wrapper
* for keys. This just extends that same concept to public keys (much like ssh-keygen)
*
* @category Crypt
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt\RSA;
use ParagonIE\ConstantTime\Base64;
use phpseclib\Crypt\DES;
use phpseclib\Crypt\Random;
use phpseclib\Math\BigInteger;
/**
* PKCS#8 Formatted RSA Key Handler
*
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class PKCS8 extends PKCS
{
/**
* Convert a private key to the appropriate format.
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @param \phpseclib\Math\BigInteger $d
* @param array $primes
* @param array $exponents
* @param array $coefficients
* @param string $password optional
* @return string
*/
static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, $primes, $exponents, $coefficients, $password = '')
{
$num_primes = count($primes);
$raw = array(
'version' => $num_primes == 2 ? chr(0) : chr(1), // two-prime vs. multi
'modulus' => $n->toBytes(true),
'publicExponent' => $e->toBytes(true),
'privateExponent' => $d->toBytes(true),
'prime1' => $primes[1]->toBytes(true),
'prime2' => $primes[2]->toBytes(true),
'exponent1' => $exponents[1]->toBytes(true),
'exponent2' => $exponents[2]->toBytes(true),
'coefficient' => $coefficients[2]->toBytes(true)
);
$components = array();
foreach ($raw as $name => $value) {
$components[$name] = pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($value)), $value);
}
$RSAPrivateKey = implode('', $components);
if ($num_primes > 2) {
$OtherPrimeInfos = '';
for ($i = 3; $i <= $num_primes; $i++) {
// OtherPrimeInfos ::= SEQUENCE SIZE(1..MAX) OF OtherPrimeInfo
//
// OtherPrimeInfo ::= SEQUENCE {
// prime INTEGER, -- ri
// exponent INTEGER, -- di
// coefficient INTEGER -- ti
// }
$OtherPrimeInfo = pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($primes[$i]->toBytes(true))), $primes[$i]->toBytes(true));
$OtherPrimeInfo.= pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($exponents[$i]->toBytes(true))), $exponents[$i]->toBytes(true));
$OtherPrimeInfo.= pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($coefficients[$i]->toBytes(true))), $coefficients[$i]->toBytes(true));
$OtherPrimeInfos.= pack('Ca*a*', self::ASN1_SEQUENCE, self::_encodeLength(strlen($OtherPrimeInfo)), $OtherPrimeInfo);
}
$RSAPrivateKey.= pack('Ca*a*', self::ASN1_SEQUENCE, self::_encodeLength(strlen($OtherPrimeInfos)), $OtherPrimeInfos);
}
$RSAPrivateKey = pack('Ca*a*', self::ASN1_SEQUENCE, self::_encodeLength(strlen($RSAPrivateKey)), $RSAPrivateKey);
$rsaOID = "\x30\x0d\x06\x09\x2a\x86\x48\x86\xf7\x0d\x01\x01\x01\x05\x00"; // hex version of MA0GCSqGSIb3DQEBAQUA
$RSAPrivateKey = pack(
'Ca*a*Ca*a*',
self::ASN1_INTEGER,
"\01\00",
$rsaOID,
4,
self::_encodeLength(strlen($RSAPrivateKey)),
$RSAPrivateKey
);
$RSAPrivateKey = pack('Ca*a*', self::ASN1_SEQUENCE, self::_encodeLength(strlen($RSAPrivateKey)), $RSAPrivateKey);
if (!empty($password) || is_string($password)) {
$salt = Random::string(8);
$iterationCount = 2048;
$crypto = new DES(DES::MODE_CBC);
$crypto->setPassword($password, 'pbkdf1', 'md5', $salt, $iterationCount);
$RSAPrivateKey = $crypto->encrypt($RSAPrivateKey);
$parameters = pack(
'Ca*a*Ca*N',
self::ASN1_OCTETSTRING,
self::_encodeLength(strlen($salt)),
$salt,
self::ASN1_INTEGER,
self::_encodeLength(4),
$iterationCount
);
$pbeWithMD5AndDES_CBC = "\x2a\x86\x48\x86\xf7\x0d\x01\x05\x03";
$encryptionAlgorithm = pack(
'Ca*a*Ca*a*',
self::ASN1_OBJECT,
self::_encodeLength(strlen($pbeWithMD5AndDES_CBC)),
$pbeWithMD5AndDES_CBC,
self::ASN1_SEQUENCE,
self::_encodeLength(strlen($parameters)),
$parameters
);
$RSAPrivateKey = pack(
'Ca*a*Ca*a*',
self::ASN1_SEQUENCE,
self::_encodeLength(strlen($encryptionAlgorithm)),
$encryptionAlgorithm,
self::ASN1_OCTETSTRING,
self::_encodeLength(strlen($RSAPrivateKey)),
$RSAPrivateKey
);
$RSAPrivateKey = pack('Ca*a*', self::ASN1_SEQUENCE, self::_encodeLength(strlen($RSAPrivateKey)), $RSAPrivateKey);
$RSAPrivateKey = "-----BEGIN ENCRYPTED PRIVATE KEY-----\r\n" .
chunk_split(Base64::encode($RSAPrivateKey), 64) .
'-----END ENCRYPTED PRIVATE KEY-----';
} else {
$RSAPrivateKey = "-----BEGIN PRIVATE KEY-----\r\n" .
chunk_split(Base64::encode($RSAPrivateKey), 64) .
'-----END PRIVATE KEY-----';
}
return $RSAPrivateKey;
}
/**
* Convert a public key to the appropriate format
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @return string
*/
static function savePublicKey(BigInteger $n, BigInteger $e)
{
$modulus = $n->toBytes(true);
$publicExponent = $e->toBytes(true);
// from <http://tools.ietf.org/html/rfc3447#appendix-A.1.1>:
// RSAPublicKey ::= SEQUENCE {
// modulus INTEGER, -- n
// publicExponent INTEGER -- e
// }
$components = array(
'modulus' => pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($modulus)), $modulus),
'publicExponent' => pack('Ca*a*', self::ASN1_INTEGER, self::_encodeLength(strlen($publicExponent)), $publicExponent)
);
$RSAPublicKey = pack(
'Ca*a*a*',
self::ASN1_SEQUENCE,
self::_encodeLength(strlen($components['modulus']) + strlen($components['publicExponent'])),
$components['modulus'],
$components['publicExponent']
);
// sequence(oid(1.2.840.113549.1.1.1), null)) = rsaEncryption.
$rsaOID = "\x30\x0d\x06\x09\x2a\x86\x48\x86\xf7\x0d\x01\x01\x01\x05\x00"; // hex version of MA0GCSqGSIb3DQEBAQUA
$RSAPublicKey = chr(0) . $RSAPublicKey;
$RSAPublicKey = chr(3) . self::_encodeLength(strlen($RSAPublicKey)) . $RSAPublicKey;
$RSAPublicKey = pack(
'Ca*a*',
self::ASN1_SEQUENCE,
self::_encodeLength(strlen($rsaOID . $RSAPublicKey)),
$rsaOID . $RSAPublicKey
);
$RSAPublicKey = "-----BEGIN PUBLIC KEY-----\r\n" .
chunk_split(Base64::encode($RSAPublicKey), 64) .
'-----END PUBLIC KEY-----';
return $RSAPublicKey;
}
}

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<?php
/**
* PuTTY Formatted RSA Key Handler
*
* PHP version 5
*
* @category Crypt
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt\RSA;
use ParagonIE\ConstantTime\Base64;
use ParagonIE\ConstantTime\Hex;
use phpseclib\Crypt\AES;
use phpseclib\Crypt\Hash;
use phpseclib\Math\BigInteger;
/**
* PuTTY Formatted RSA Key Handler
*
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class PuTTY
{
/**
* Default comment
*
* @var string
* @access private
*/
static $comment = 'phpseclib-generated-key';
/**
* Sets the default comment
*
* @access public
* @param string $comment
*/
static function setComment($comment)
{
self::$comment = str_replace(array("\r", "\n"), '', $comment);
}
/**
* Generate a symmetric key for PuTTY keys
*
* @access public
* @param string $password
* @param string $iv
* @param int $length
* @return string
*/
static function generateSymmetricKey($password, $length)
{
$symkey = '';
$sequence = 0;
while (strlen($symkey) < $length) {
$temp = pack('Na*', $sequence++, $password);
$symkey.= Hex::decode(sha1($temp));
}
return substr($symkey, 0, $length);
}
/**
* Break a public or private key down into its constituent components
*
* @access public
* @param string $key
* @param string $password optional
* @return array
*/
static function load($key, $password = '')
{
if (!is_string($key)) {
return false;
}
static $one;
if (!isset($one)) {
$one = new BigInteger(1);
}
if (strpos($key, 'BEGIN SSH2 PUBLIC KEY')) {
$data = preg_split('#[\r\n]+#', $key);
$data = array_splice($data, 2, -1);
$data = implode('', $data);
$components = OpenSSH::load($data);
if ($components === false) {
return false;
}
if (!preg_match('#Comment: "(.+)"#', $key, $matches)) {
return false;
}
$components['comment'] = str_replace(array('\\\\', '\"'), array('\\', '"'), $matches[1]);
return $components;
}
$components = array('isPublicKey' => false);
$key = preg_split('#\r\n|\r|\n#', $key);
$type = trim(preg_replace('#PuTTY-User-Key-File-2: (.+)#', '$1', $key[0]));
if ($type != 'ssh-rsa') {
return false;
}
$encryption = trim(preg_replace('#Encryption: (.+)#', '$1', $key[1]));
$components['comment'] = trim(preg_replace('#Comment: (.+)#', '$1', $key[2]));
$publicLength = trim(preg_replace('#Public-Lines: (\d+)#', '$1', $key[3]));
$public = Base64::decode(implode('', array_map('trim', array_slice($key, 4, $publicLength))));
$public = substr($public, 11);
extract(unpack('Nlength', self::_string_shift($public, 4)));
$components['publicExponent'] = new BigInteger(self::_string_shift($public, $length), -256);
extract(unpack('Nlength', self::_string_shift($public, 4)));
$components['modulus'] = new BigInteger(self::_string_shift($public, $length), -256);
$privateLength = trim(preg_replace('#Private-Lines: (\d+)#', '$1', $key[$publicLength + 4]));
$private = Base64::decode(implode('', array_map('trim', array_slice($key, $publicLength + 5, $privateLength))));
switch ($encryption) {
case 'aes256-cbc':
$symkey = static::generateSymmetricKey($password, 32);
$crypto = new AES(AES::MODE_CBC);
}
if ($encryption != 'none') {
$crypto->setKey($symkey);
$crypto->setIV(str_repeat("\0", $crypto->getBlockLength() >> 3));
$crypto->disablePadding();
$private = $crypto->decrypt($private);
if ($private === false) {
return false;
}
}
extract(unpack('Nlength', self::_string_shift($private, 4)));
if (strlen($private) < $length) {
return false;
}
$components['privateExponent'] = new BigInteger(self::_string_shift($private, $length), -256);
extract(unpack('Nlength', self::_string_shift($private, 4)));
if (strlen($private) < $length) {
return false;
}
$components['primes'] = array(1 => new BigInteger(self::_string_shift($private, $length), -256));
extract(unpack('Nlength', self::_string_shift($private, 4)));
if (strlen($private) < $length) {
return false;
}
$components['primes'][] = new BigInteger(self::_string_shift($private, $length), -256);
$temp = $components['primes'][1]->subtract($one);
$components['exponents'] = array(1 => $components['publicExponent']->modInverse($temp));
$temp = $components['primes'][2]->subtract($one);
$components['exponents'][] = $components['publicExponent']->modInverse($temp);
extract(unpack('Nlength', self::_string_shift($private, 4)));
if (strlen($private) < $length) {
return false;
}
$components['coefficients'] = array(2 => new BigInteger(self::_string_shift($private, $length), -256));
return $components;
}
/**
* String Shift
*
* Inspired by array_shift
*
* @param string $string
* @param int $index
* @return string
* @access private
*/
static function _string_shift(&$string, $index = 1)
{
$substr = substr($string, 0, $index);
$string = substr($string, $index);
return $substr;
}
/**
* Convert a private key to the appropriate format.
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @param \phpseclib\Math\BigInteger $d
* @param array $primes
* @param array $exponents
* @param array $coefficients
* @param string $password optional
* @return string
*/
static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, $primes, $exponents, $coefficients, $password = '')
{
if (count($primes) != 2) {
return false;
}
$raw = array(
'modulus' => $n->toBytes(true),
'publicExponent' => $e->toBytes(true),
'privateExponent' => $d->toBytes(true),
'prime1' => $primes[1]->toBytes(true),
'prime2' => $primes[2]->toBytes(true),
'exponent1' => $exponents[1]->toBytes(true),
'exponent2' => $exponents[2]->toBytes(true),
'coefficient' => $coefficients[2]->toBytes(true)
);
$key = "PuTTY-User-Key-File-2: ssh-rsa\r\nEncryption: ";
$encryption = (!empty($password) || is_string($password)) ? 'aes256-cbc' : 'none';
$key.= $encryption;
$key.= "\r\nComment: " . self::$comment . "\r\n";
$public = pack(
'Na*Na*Na*',
strlen('ssh-rsa'),
'ssh-rsa',
strlen($raw['publicExponent']),
$raw['publicExponent'],
strlen($raw['modulus']),
$raw['modulus']
);
$source = pack(
'Na*Na*Na*Na*',
strlen('ssh-rsa'),
'ssh-rsa',
strlen($encryption),
$encryption,
strlen(self::$comment),
self::$comment,
strlen($public),
$public
);
$public = Base64::encode($public);
$key.= "Public-Lines: " . ((strlen($public) + 63) >> 6) . "\r\n";
$key.= chunk_split($public, 64);
$private = pack(
'Na*Na*Na*Na*',
strlen($raw['privateExponent']),
$raw['privateExponent'],
strlen($raw['prime1']),
$raw['prime1'],
strlen($raw['prime2']),
$raw['prime2'],
strlen($raw['coefficient']),
$raw['coefficient']
);
if (empty($password) && !is_string($password)) {
$source.= pack('Na*', strlen($private), $private);
$hashkey = 'putty-private-key-file-mac-key';
} else {
$private.= Random::string(16 - (strlen($private) & 15));
$source.= pack('Na*', strlen($private), $private);
$crypto = new AES();
$crypto->setKey(static::generateSymmetricKey($password, 32));
$crypto->setIV(str_repeat("\0", $crypto->getBlockLength() >> 3));
$crypto->disablePadding();
$private = $crypto->encrypt($private);
$hashkey = 'putty-private-key-file-mac-key' . $password;
}
$private = Base64::encode($private);
$key.= 'Private-Lines: ' . ((strlen($private) + 63) >> 6) . "\r\n";
$key.= chunk_split($private, 64);
$hash = new Hash('sha1');
$hash->setKey(sha1($hashkey, true));
$key.= 'Private-MAC: ' . Hex::encode($hash->hash($source)) . "\r\n";
return $key;
}
/**
* Convert a public key to the appropriate format
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @return string
*/
static function savePublicKey(BigInteger $n, BigInteger $e)
{
$n = $n->toBytes(true);
$e = $e->toBytes(true);
$key = pack(
'Na*Na*Na*',
strlen('ssh-rsa'),
'ssh-rsa',
strlen($e),
$e,
strlen($n),
$n
);
$key = "---- BEGIN SSH2 PUBLIC KEY ----\r\n" .
'Comment: "' . str_replace(array('\\', '"'), array('\\\\', '\"'), self::$comment) . "\"\r\n";
chunk_split(Base64::encode($key), 64) .
'---- END SSH2 PUBLIC KEY ----';
return $key;
}
}

103
plugins/OStatus/extlib/phpseclib/Crypt/RSA/Raw.php Normal file
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@ -0,0 +1,103 @@
<?php
/**
* Raw RSA Key Handler
*
* PHP version 5
*
* An array containing two \phpseclib\Math\BigInteger objects.
*
* The exponent can be indexed with any of the following:
*
* 0, e, exponent, publicExponent
*
* The modulus can be indexed with any of the following:
*
* 1, n, modulo, modulus
*
* @category Crypt
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt\RSA;
use phpseclib\Math\BigInteger;
/**
* Raw RSA Key Handler
*
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class Raw
{
/**
* Break a public or private key down into its constituent components
*
* @access public
* @param string $key
* @param string $password optional
* @return array
*/
static function load($key, $password = '')
{
if (!is_array($key)) {
return false;
}
if (isset($key['isPublicKey']) && isset($key['modulus'])) {
if (isset($key['privateExponent']) || isset($key['publicExponent'])) {
if (!isset($key['primes'])) {
return $key;
}
if (isset($key['exponents']) && isset($key['coefficients']) && isset($key['publicExponent']) && isset($key['privateExponent'])) {
return $key;
}
}
}
$components = array('isPublicKey' => true);
switch (true) {
case isset($key['e']):
$components['publicExponent'] = $key['e'];
break;
case isset($key['exponent']):
$components['publicExponent'] = $key['exponent'];
break;
case isset($key['publicExponent']):
$components['publicExponent'] = $key['publicExponent'];
break;
case isset($key[0]):
$components['publicExponent'] = $key[0];
}
switch (true) {
case isset($key['n']):
$components['modulus'] = $key['n'];
break;
case isset($key['modulo']):
$components['modulus'] = $key['modulo'];
break;
case isset($key['modulus']):
$components['modulus'] = $key['modulus'];
break;
case isset($key[1]):
$components['modulus'] = $key[1];
}
return isset($components['modulus']) && isset($components['publicExponent']) ? $components : false;
}
/**
* Convert a public key to the appropriate format
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @return string
*/
static function savePublicKey(BigInteger $n, BigInteger $e)
{
return array('e' => clone $e, 'n' => clone $n);
}
}

147
plugins/OStatus/extlib/phpseclib/Crypt/RSA/XML.php Normal file
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@ -0,0 +1,147 @@
<?php
/**
* XML Formatted RSA Key Handler
*
* More info:
*
* http://www.w3.org/TR/xmldsig-core/#sec-RSAKeyValue
* http://en.wikipedia.org/wiki/XML_Signature
*
* PHP version 5
*
* @category Crypt
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Crypt\RSA;
use ParagonIE\ConstantTime\Base64;
use phpseclib\Math\BigInteger;
/**
* XML Formatted RSA Key Handler
*
* @package RSA
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class XML
{
/**
* Break a public or private key down into its constituent components
*
* @access public
* @param string $key
* @param string $password optional
* @return array
*/
static function load($key, $password = '')
{
if (!is_string($key)) {
return false;
}
$components = array(
'isPublicKey' => false,
'primes' => array(),
'exponents' => array(),
'coefficients' => array()
);
$use_errors = libxml_use_internal_errors(true);
$dom = new \DOMDocument();
if (!$dom->loadXML('<xml>' . $key . '</xml>')) {
return false;
}
$xpath = new \DOMXPath($dom);
$keys = array('modulus', 'exponent', 'p', 'q', 'dp', 'dq', 'inverseq', 'd');
foreach ($keys as $key) {
// $dom->getElementsByTagName($key) is case-sensitive
$temp = $xpath->query("//*[translate(local-name(), 'ABCDEFGHIJKLMNOPQRSTUVWXYZ','abcdefghijklmnopqrstuvwxyz')='$key']");
if (!$temp->length) {
continue;
}
$value = new BigInteger(Base64::decode($temp->item(0)->nodeValue), 256);
switch ($key) {
case 'modulus':
$components['modulus'] = $value;
break;
case 'exponent':
$components['publicExponent'] = $value;
break;
case 'p':
$components['primes'][1] = $value;
break;
case 'q':
$components['primes'][2] = $value;
break;
case 'dp':
$components['exponents'][1] = $value;
break;
case 'dq':
$components['exponents'][2] = $value;
break;
case 'inverseq':
$components['coefficients'][2] = $value;
break;
case 'd':
$components['privateExponent'] = $value;
}
}
libxml_use_internal_errors($use_errors);
return isset($components['modulus']) && isset($components['publicExponent']) ? $components : false;
}
/**
* Convert a private key to the appropriate format.
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @param \phpseclib\Math\BigInteger $d
* @param array $primes
* @param array $exponents
* @param array $coefficients
* @param string $password optional
* @return string
*/
static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, $primes, $exponents, $coefficients, $password = '')
{
if (count($primes) != 2) {
return false;
}
return "<RSAKeyValue>\r\n" .
' <Modulus>' . Base64::encode($n->toBytes()) . "</Modulus>\r\n" .
' <Exponent>' . Base64::encode($e->toBytes()) . "</Exponent>\r\n" .
' <P>' . Base64::encode($primes[1]->toBytes()) . "</P>\r\n" .
' <Q>' . Base64::encode($primes[2]->toBytes()) . "</Q>\r\n" .
' <DP>' . Base64::encode($exponents[1]->toBytes()) . "</DP>\r\n" .
' <DQ>' . Base64::encode($exponents[2]->toBytes()) . "</DQ>\r\n" .
' <InverseQ>' . Base64::encode($coefficients[2]->toBytes()) . "</InverseQ>\r\n" .
' <D>' . Base64::encode($d->toBytes()) . "</D>\r\n" .
'</RSAKeyValue>';
}
/**
* Convert a public key to the appropriate format
*
* @access public
* @param \phpseclib\Math\BigInteger $n
* @param \phpseclib\Math\BigInteger $e
* @return string
*/
static function savePublicKey(BigInteger $n, BigInteger $e)
{
return "<RSAKeyValue>\r\n" .
' <Modulus>' . Base64::encode($n->toBytes()) . "</Modulus>\r\n" .
' <Exponent>' . Base64::encode($e->toBytes()) . "</Exponent>\r\n" .
'</RSAKeyValue>';
}
}

224
plugins/OStatus/extlib/phpseclib/Crypt/Random.php
View File

@ -1,111 +1,62 @@
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Random Number Generator
*
* PHP versions 4 and 5
* PHP version 5
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/Random.php');
* include 'vendor/autoload.php';
*
* echo bin2hex(crypt_random_string(8));
* echo bin2hex(\phpseclib\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
* @package Random
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @copyright 2007 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');
namespace phpseclib\Crypt;
/**
* Pure-PHP Random Number Generator
*
* @package Random
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class Random
{
/**
* 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
* @param int $length
* @throws \RuntimeException if a symmetric cipher is needed but not loaded
* @return string
*/
function crypt_random_string($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);
}
static function string($length)
{
try {
return \random_bytes($length);
} catch (\Exception $e) {
// random_compat will throw an Exception, which in PHP 5 does not implement Throwable
} catch (\Throwable $e) {
// If a sufficient source of randomness is unavailable, random_bytes() will throw an
// object that implements the Throwable interface (Exception, TypeError, Error).
// We don't actually need to do anything here. The string() method should just continue
// as normal. Note, however, that if we don't have a sufficient source of randomness for
// random_bytes(), most of the other calls here will fail too, so we'll end up using
// the PHP implementation.
}
// at this point we have no choice but to use a pure-PHP CSPRNG
@ -117,7 +68,7 @@ function crypt_random_string($length)
// 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
// 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 $_SERVER is controlled
// by the user and (2) this isn't just looking at the data sent by the current user - it's based
// on the data sent by all users. one user requests the page and a hash of their info is saved.
@ -132,9 +83,7 @@ function crypt_random_string($length)
$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;
}
$_OLD_SESSION = isset($_SESSION) ? $_SESSION : false;
if ($old_session_id != '') {
session_write_close();
}
@ -144,15 +93,14 @@ function crypt_random_string($length)
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)
));
$v = (isset($_SERVER) ? self::safe_serialize($_SERVER) : '') .
(isset($_POST) ? self::safe_serialize($_POST) : '') .
(isset($_GET) ? self::safe_serialize($_GET) : '') .
(isset($_COOKIE) ? self::safe_serialize($_COOKIE) : '') .
self::safe_serialize($GLOBALS) .
self::safe_serialize($_SESSION) .
self::safe_serialize($_OLD_SESSION);
$v = $seed = $_SESSION['seed'] = sha1($v, true);
if (!isset($_SESSION['count'])) {
$_SESSION['count'] = 0;
}
@ -167,7 +115,7 @@ function crypt_random_string($length)
ini_set('session.use_cookies', $old_use_cookies);
session_cache_limiter($old_session_cache_limiter);
} else {
if (isset($_OLD_SESSION)) {
if ($_OLD_SESSION !== false) {
$_SESSION = $_OLD_SESSION;
unset($_OLD_SESSION);
} else {
@ -183,28 +131,33 @@ function crypt_random_string($length)
// http://tools.ietf.org/html/rfc4253#section-7.2
//
// see the is_string($crypto) part for an example of how to expand the keys
$key = pack('H*', sha1($seed . 'A'));
$iv = pack('H*', sha1($seed . 'C'));
$key = sha1($seed . 'A', true);
$iv = sha1($seed . 'C', true);
// 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);
case class_exists('\phpseclib\Crypt\AES'):
$crypto = new AES(Base::MODE_CTR);
break;
case class_exists('Crypt_TripleDES'):
$crypto = new Crypt_TripleDES(CRYPT_DES_MODE_CTR);
case class_exists('\phpseclib\Crypt\Twofish'):
$crypto = new Twofish(Base::MODE_CTR);
break;
case class_exists('Crypt_DES'):
$crypto = new Crypt_DES(CRYPT_DES_MODE_CTR);
case class_exists('\phpseclib\Crypt\Blowfish'):
$crypto = new Blowfish(Base::MODE_CTR);
break;
case class_exists('Crypt_RC4'):
$crypto = new Crypt_RC4();
case class_exists('\phpseclib\Crypt\TripleDES'):
$crypto = new TripleDES(Base::MODE_CTR);
break;
case class_exists('\phpseclib\Crypt\DES'):
$crypto = new DES(Base::MODE_CTR);
break;
case class_exists('\phpseclib\Crypt\RC4'):
$crypto = new RC4();
break;
default:
$crypto = $seed;
return crypt_random_string($length);
throw new \RuntimeException(__CLASS__ . ' requires at least one symmetric cipher be loaded');
}
$crypto->setKey($key);
@ -212,7 +165,8 @@ function crypt_random_string($length)
$crypto->enableContinuousBuffer();
}
if (is_string($crypto)) {
//return $crypto->encrypt(str_repeat("\0", $length));
// the following is based off of ANSI X9.31:
//
// http://csrc.nist.gov/groups/STM/cavp/documents/rng/931rngext.pdf
@ -221,29 +175,45 @@ function crypt_random_string($length)
//
// 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);
$i = $crypto->encrypt(microtime()); // strlen(microtime()) == 21
$r = $crypto->encrypt($i ^ $v); // strlen($v) == 20
$v = $crypto->encrypt($r ^ $i); // strlen($r) == 20
$result.= $r;
}
return substr($result, 0, $length);
}
/**
* Safely serialize variables
*
* If a class has a private __sleep() it'll emit a warning
*
* @param mixed $arr
* @access public
*/
function safe_serialize(&$arr)
{
if (is_object($arr)) {
return '';
}
if (!is_array($arr)) {
return serialize($arr);
}
// prevent circular array recursion
if (isset($arr['__phpseclib_marker'])) {
return '';
}
$safearr = array();
$arr['__phpseclib_marker'] = true;
foreach (array_keys($arr) as $key) {
// do not recurse on the '__phpseclib_marker' key itself, for smaller memory usage
if ($key !== '__phpseclib_marker') {
$safearr[$key] = self::safe_serialize($arr[$key]);
}
}
unset($arr['__phpseclib_marker']);
return serialize($safearr);
}
}

1171
plugins/OStatus/extlib/phpseclib/Crypt/Rijndael.php
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328
plugins/OStatus/extlib/phpseclib/Crypt/TripleDES.php
View File

@ -1,19 +1,18 @@
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementation of Triple DES.
*
* Uses mcrypt, if available, and an internal implementation, otherwise. Operates in the EDE3 mode (encrypt-decrypt-encrypt).
*
* PHP versions 4 and 5
* PHP version 5
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/TripleDES.php');
* include 'vendor/autoload.php';
*
* $des = new Crypt_TripleDES();
* $des = new \phpseclib\Crypt\TripleDES();
*
* $des->setKey('abcdefghijklmnopqrstuvwx');
*
@ -27,99 +26,64 @@
* ?>
* </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_TripleDES
* @package TripleDES
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
/**
* Include Crypt_DES
*/
if (!class_exists('Crypt_DES')) {
require_once('DES.php');
}
/**
* Encrypt / decrypt using inner chaining
*
* Inner chaining is used by SSH-1 and is generally considered to be less secure then outer chaining (CRYPT_DES_MODE_CBC3).
*/
define('CRYPT_DES_MODE_3CBC', -2);
/**
* Encrypt / decrypt using outer chaining
*
* Outer chaining is used by SSH-2 and when the mode is set to CRYPT_DES_MODE_CBC.
*/
define('CRYPT_DES_MODE_CBC3', CRYPT_DES_MODE_CBC);
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of Triple DES.
*
* @package TripleDES
* @author Jim Wigginton <terrafrost@php.net>
* @version 0.1.0
* @access public
* @package Crypt_TripleDES
*/
class Crypt_TripleDES extends Crypt_DES {
class TripleDES extends DES
{
/**
* The default password key_size used by setPassword()
* Encrypt / decrypt using inner chaining
*
* @see Crypt_DES::password_key_size
* @see Crypt_Base::password_key_size
* @see Crypt_Base::setPassword()
* @var Integer
* Inner chaining is used by SSH-1 and is generally considered to be less secure then outer chaining (self::MODE_CBC3).
*/
const MODE_3CBC = -2;
/**
* Encrypt / decrypt using outer chaining
*
* Outer chaining is used by SSH-2 and when the mode is set to \phpseclib\Crypt\Base::MODE_CBC.
*/
const MODE_CBC3 = Base::MODE_CBC;
/**
* Key Length (in bytes)
*
* @see \phpseclib\Crypt\TripleDES::setKeyLength()
* @var int
* @access private
*/
var $password_key_size = 24;
var $key_length = 24;
/**
* The default salt used by setPassword()
*
* @see Crypt_Base::password_default_salt
* @see Crypt_Base::setPassword()
* @var String
* @see \phpseclib\Crypt\Base::password_default_salt
* @see \phpseclib\Crypt\Base::setPassword()
* @var string
* @access private
*/
var $password_default_salt = 'phpseclib';
/**
* The namespace used by the cipher for its constants.
*
* @see Crypt_DES::const_namespace
* @see Crypt_Base::const_namespace
* @var String
* @access private
*/
var $const_namespace = 'DES';
/**
* The mcrypt specific name of the cipher
*
* @see Crypt_DES::cipher_name_mcrypt
* @see Crypt_Base::cipher_name_mcrypt
* @var String
* @see \phpseclib\Crypt\DES::cipher_name_mcrypt
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'tripledes';
@ -127,8 +91,8 @@ class Crypt_TripleDES extends Crypt_DES {
/**
* Optimizing value while CFB-encrypting
*
* @see Crypt_Base::cfb_init_len
* @var Integer
* @see \phpseclib\Crypt\Base::cfb_init_len
* @var int
* @access private
*/
var $cfb_init_len = 750;
@ -136,27 +100,27 @@ class Crypt_TripleDES extends Crypt_DES {
/**
* max possible size of $key
*
* @see Crypt_TripleDES::setKey()
* @see Crypt_DES::setKey()
* @var String
* @see self::setKey()
* @see \phpseclib\Crypt\DES::setKey()
* @var string
* @access private
*/
var $key_size_max = 24;
var $key_length_max = 24;
/**
* Internal flag whether using CRYPT_DES_MODE_3CBC or not
* Internal flag whether using self::MODE_3CBC or not
*
* @var Boolean
* @var bool
* @access private
*/
var $mode_3cbc;
/**
* The Crypt_DES objects
* The \phpseclib\Crypt\DES objects
*
* Used only if $mode_3cbc === true
*
* @var Array
* @var array
* @access private
*/
var $des;
@ -164,65 +128,83 @@ class Crypt_TripleDES extends Crypt_DES {
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
* Determines whether or not the mcrypt or OpenSSL extensions should be used.
*
* $mode could be:
*
* - CRYPT_DES_MODE_ECB
* - \phpseclib\Crypt\Base::MODE_ECB
*
* - CRYPT_DES_MODE_CBC
* - \phpseclib\Crypt\Base::MODE_CBC
*
* - CRYPT_DES_MODE_CTR
* - \phpseclib\Crypt\Base::MODE_CTR
*
* - CRYPT_DES_MODE_CFB
* - \phpseclib\Crypt\Base::MODE_CFB
*
* - CRYPT_DES_MODE_OFB
* - \phpseclib\Crypt\Base::MODE_OFB
*
* - CRYPT_DES_MODE_3CBC
* - \phpseclib\Crypt\TripleDES::MODE_3CB
*
* If not explictly set, CRYPT_DES_MODE_CBC will be used.
*
* @see Crypt_DES::Crypt_DES()
* @see Crypt_Base::Crypt_Base()
* @param optional Integer $mode
* @see \phpseclib\Crypt\DES::__construct()
* @see \phpseclib\Crypt\Base::__construct()
* @param int $mode
* @access public
*/
function Crypt_TripleDES($mode = CRYPT_DES_MODE_CBC)
function __construct($mode)
{
switch ($mode) {
// In case of CRYPT_DES_MODE_3CBC, we init as CRYPT_DES_MODE_CBC
// In case of self::MODE_3CBC, we init as CRYPT_DES_MODE_CBC
// and additional flag us internally as 3CBC
case CRYPT_DES_MODE_3CBC:
parent::Crypt_DES(CRYPT_DES_MODE_CBC);
case self::MODE_3CBC:
parent::__construct(Base::MODE_CBC);
$this->mode_3cbc = true;
// This three $des'es will do the 3CBC work (if $key > 64bits)
$this->des = array(
new Crypt_DES(CRYPT_DES_MODE_CBC),
new Crypt_DES(CRYPT_DES_MODE_CBC),
new Crypt_DES(CRYPT_DES_MODE_CBC),
new DES(Base::MODE_CBC),
new DES(Base::MODE_CBC),
new DES(Base::MODE_CBC),
);
// we're going to be doing the padding, ourselves, so disable it in the Crypt_DES objects
// we're going to be doing the padding, ourselves, so disable it in the \phpseclib\Crypt\DES objects
$this->des[0]->disablePadding();
$this->des[1]->disablePadding();
$this->des[2]->disablePadding();
break;
// If not 3CBC, we init as usual
default:
parent::Crypt_DES($mode);
parent::__construct($mode);
}
}
/**
* Sets the initialization vector. (optional)
* Test for engine validity
*
* SetIV is not required when CRYPT_DES_MODE_ECB is being used. If not explictly set, it'll be assumed
* to be all zero's.
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
*
* @see Crypt_Base::setIV()
* @see \phpseclib\Crypt\Base::__construct()
* @param int $engine
* @access public
* @param String $iv
* @return bool
*/
function isValidEngine($engine)
{
if ($engine == self::ENGINE_OPENSSL) {
$this->cipher_name_openssl_ecb = 'des-ede3';
$mode = $this->_openssl_translate_mode();
$this->cipher_name_openssl = $mode == 'ecb' ? 'des-ede3' : 'des-ede3-' . $mode;
}
return parent::isValidEngine($engine);
}
/**
* Sets the initialization vector.
*
* SetIV is not required when \phpseclib\Crypt\Base::MODE_ECB is being used.
*
* @see \phpseclib\Crypt\Base::setIV()
* @access public
* @param string $iv
*/
function setIV($iv)
{
@ -234,39 +216,66 @@ class Crypt_TripleDES extends Crypt_DES {
}
}
/**
* Sets the key length.
*
* Valid key lengths are 128 and 192 bits.
*
* If you want to use a 64-bit key use DES.php
*
* @see \phpseclib\Crypt\Base:setKeyLength()
* @access public
* @throws \LengthException if the key length is invalid
* @param int $length
*/
function setKeyLength($length)
{
switch ($length) {
case 128:
case 192:
break;
default:
throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys of sizes 128 or 192 bits are supported');
}
parent::setKeyLength($length);
}
/**
* Sets the key.
*
* Keys can be of any length. Triple DES, itself, can use 128-bit (eg. strlen($key) == 16) or
* 192-bit (eg. strlen($key) == 24) keys. This function pads and truncates $key as appropriate.
* Triple DES can use 128-bit (eg. strlen($key) == 16) or 192-bit (eg. strlen($key) == 24) keys.
*
* DES also requires that every eighth bit be a parity bit, however, we'll ignore that.
*
* If the key is not explicitly set, it'll be assumed to be all null bytes.
*
* @access public
* @see Crypt_DES::setKey()
* @see Crypt_Base::setKey()
* @param String $key
* @see \phpseclib\Crypt\DES::setKey()
* @see \phpseclib\Crypt\Base::setKey()
* @throws \LengthException if the key length is invalid
* @param string $key
*/
function setKey($key)
{
$length = strlen($key);
if ($length > 8) {
$key = str_pad(substr($key, 0, 24), 24, chr(0));
// if $key is between 64 and 128-bits, use the first 64-bits as the last, per this:
// http://php.net/function.mcrypt-encrypt#47973
//$key = $length <= 16 ? substr_replace($key, substr($key, 0, 8), 16) : substr($key, 0, 24);
} else {
$key = str_pad($key, 8, chr(0));
if ($this->explicit_key_length !== false && strlen($key) != $this->explicit_key_length) {
throw new \LengthException('Key length has already been set to ' . $this->explicit_key_length . ' bytes and this key is ' . strlen($key) . ' bytes');
}
parent::setKey($key);
// And in case of CRYPT_DES_MODE_3CBC:
// if key <= 64bits we not need the 3 $des to work,
// because we will then act as regular DES-CBC with just a <= 64bit key.
// So only if the key > 64bits (> 8 bytes) we will call setKey() for the 3 $des.
if ($this->mode_3cbc && $length > 8) {
switch (strlen($key)) {
case 16:
$key.= substr($key, 0, 8);
case 24:
break;
default:
throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes 16 or 24 are supported');
}
// copied from Base::setKey()
$this->key = $key;
$this->key_length = strlen($key);
$this->changed = true;
$this->_setEngine();
if ($this->mode_3cbc) {
$this->des[0]->setKey(substr($key, 0, 8));
$this->des[1]->setKey(substr($key, 8, 8));
$this->des[2]->setKey(substr($key, 16, 8));
@ -276,21 +285,25 @@ class Crypt_TripleDES extends Crypt_DES {
/**
* Encrypts a message.
*
* @see Crypt_Base::encrypt()
* @see \phpseclib\Crypt\Base::encrypt()
* @access public
* @param String $plaintext
* @return String $cipertext
* @param string $plaintext
* @return string $cipertext
*/
function encrypt($plaintext)
{
// parent::en/decrypt() is able to do all the work for all modes and keylengths,
// except for: CRYPT_DES_MODE_3CBC (inner chaining CBC) with a key > 64bits
// except for: self::MODE_3CBC (inner chaining CBC) with a key > 64bits
// if the key is smaller then 8, do what we'd normally do
if ($this->mode_3cbc && strlen($this->key) > 8) {
return $this->des[2]->encrypt(
$this->des[1]->decrypt(
$this->des[0]->encrypt($this->_pad($plaintext))));
$this->des[0]->encrypt(
$this->_pad($plaintext)
)
)
);
}
return parent::encrypt($plaintext);
@ -299,17 +312,23 @@ class Crypt_TripleDES extends Crypt_DES {
/**
* Decrypts a message.
*
* @see Crypt_Base::decrypt()
* @see \phpseclib\Crypt\Base::decrypt()
* @access public
* @param String $ciphertext
* @return String $plaintext
* @param string $ciphertext
* @return string $plaintext
*/
function decrypt($ciphertext)
{
if ($this->mode_3cbc && strlen($this->key) > 8) {
return $this->_unpad($this->des[0]->decrypt(
return $this->_unpad(
$this->des[0]->decrypt(
$this->des[1]->encrypt(
$this->des[2]->decrypt(str_pad($ciphertext, (strlen($ciphertext) + 7) & 0xFFFFFFF8, "\0")))));
$this->des[2]->decrypt(
str_pad($ciphertext, (strlen($ciphertext) + 7) & 0xFFFFFFF8, "\0")
)
)
)
);
}
return parent::decrypt($ciphertext);
@ -344,13 +363,13 @@ class Crypt_TripleDES extends Crypt_DES {
* 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_DES() object changes after each
* Put another way, when the continuous buffer is enabled, the state of the \phpseclib\Crypt\DES() 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_Base::enableContinuousBuffer()
* @see Crypt_TripleDES::disableContinuousBuffer()
* @see \phpseclib\Crypt\Base::enableContinuousBuffer()
* @see self::disableContinuousBuffer()
* @access public
*/
function enableContinuousBuffer()
@ -368,8 +387,8 @@ class Crypt_TripleDES extends Crypt_DES {
*
* The default behavior.
*
* @see Crypt_Base::disableContinuousBuffer()
* @see Crypt_TripleDES::enableContinuousBuffer()
* @see \phpseclib\Crypt\Base::disableContinuousBuffer()
* @see self::enableContinuousBuffer()
* @access public
*/
function disableContinuousBuffer()
@ -385,8 +404,8 @@ class Crypt_TripleDES extends Crypt_DES {
/**
* Creates the key schedule
*
* @see Crypt_DES::_setupKey()
* @see Crypt_Base::_setupKey()
* @see \phpseclib\Crypt\DES::_setupKey()
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
@ -416,7 +435,24 @@ class Crypt_TripleDES extends Crypt_DES {
// setup our key
parent::_setupKey();
}
}
// vim: ts=4:sw=4:et:
// vim6: fdl=1:
/**
* Sets the internal crypt engine
*
* @see \phpseclib\Crypt\Base::__construct()
* @see \phpseclib\Crypt\Base::setPreferredEngine()
* @param int $engine
* @access public
* @return int
*/
function setPreferredEngine($engine)
{
if ($this->mode_3cbc) {
$this->des[0]->setPreferredEngine($engine);
$this->des[1]->setPreferredEngine($engine);
$this->des[2]->setPreferredEngine($engine);
}
return parent::setPreferredEngine($engine);
}
}

304
plugins/OStatus/extlib/phpseclib/Crypt/Twofish.php
View File

@ -1,12 +1,11 @@
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Pure-PHP implementation of Twofish.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP versions 4 and 5
* PHP version 5
*
* Useful resources are as follows:
*
@ -15,9 +14,9 @@
* Here's a short example of how to use this library:
* <code>
* <?php
* include('Crypt/Twofish.php');
* include 'vendor/autoload.php';
*
* $twofish = new Crypt_Twofish();
* $twofish = new \phpseclib\Crypt\Twofish();
*
* $twofish->setKey('12345678901234567890123456789012');
*
@ -27,120 +26,32 @@
* ?>
* </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_Twofish
* @package Twofish
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
* @copyright MMVII Jim Wigginton
* @copyright 2007 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @version 1.0
* @link http://phpseclib.sourceforge.net
*/
/**
* Include Crypt_Base
*
* Base cipher class
*/
if (!class_exists('Crypt_Base')) {
require_once('Base.php');
}
/**#@+
* @access public
* @see Crypt_Twofish::encrypt()
* @see Crypt_Twofish::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_TWOFISH_MODE_CTR', CRYPT_MODE_CTR);
/**
* Encrypt / decrypt using the Electronic Code Book mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
*/
define('CRYPT_TWOFISH_MODE_ECB', CRYPT_MODE_ECB);
/**
* Encrypt / decrypt using the Code Book Chaining mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
*/
define('CRYPT_TWOFISH_MODE_CBC', CRYPT_MODE_CBC);
/**
* Encrypt / decrypt using the Cipher Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
*/
define('CRYPT_TWOFISH_MODE_CFB', CRYPT_MODE_CFB);
/**
* Encrypt / decrypt using the Cipher Feedback mode.
*
* @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
*/
define('CRYPT_TWOFISH_MODE_OFB', CRYPT_MODE_OFB);
/**#@-*/
/**#@+
* @access private
* @see Crypt_Twofish::Crypt_Twofish()
*/
/**
* Toggles the internal implementation
*/
define('CRYPT_TWOFISH_MODE_INTERNAL', CRYPT_MODE_INTERNAL);
/**
* Toggles the mcrypt implementation
*/
define('CRYPT_TWOFISH_MODE_MCRYPT', CRYPT_MODE_MCRYPT);
/**#@-*/
namespace phpseclib\Crypt;
/**
* Pure-PHP implementation of Twofish.
*
* @package Twofish
* @author Jim Wigginton <terrafrost@php.net>
* @author Hans-Juergen Petrich <petrich@tronic-media.com>
* @version 1.0
* @access public
* @package Crypt_Twofish
*/
class Crypt_Twofish extends Crypt_Base {
/**
* The namespace used by the cipher for its constants.
*
* @see Crypt_Base::const_namespace
* @var String
* @access private
*/
var $const_namespace = 'TWOFISH';
class Twofish extends Base
{
/**
* The mcrypt specific name of the cipher
*
* @see Crypt_Base::cipher_name_mcrypt
* @var String
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
* @var string
* @access private
*/
var $cipher_name_mcrypt = 'twofish';
@ -148,8 +59,8 @@ class Crypt_Twofish extends Crypt_Base {
/**
* Optimizing value while CFB-encrypting
*
* @see Crypt_Base::cfb_init_len
* @var Integer
* @see \phpseclib\Crypt\Base::cfb_init_len
* @var int
* @access private
*/
var $cfb_init_len = 800;
@ -157,10 +68,10 @@ class Crypt_Twofish extends Crypt_Base {
/**
* Q-Table
*
* @var Array
* @var array
* @access private
*/
var $q0 = array (
var $q0 = array(
0xA9, 0x67, 0xB3, 0xE8, 0x04, 0xFD, 0xA3, 0x76,
0x9A, 0x92, 0x80, 0x78, 0xE4, 0xDD, 0xD1, 0x38,
0x0D, 0xC6, 0x35, 0x98, 0x18, 0xF7, 0xEC, 0x6C,
@ -198,10 +109,10 @@ class Crypt_Twofish extends Crypt_Base {
/**
* Q-Table
*
* @var Array
* @var array
* @access private
*/
var $q1 = array (
var $q1 = array(
0x75, 0xF3, 0xC6, 0xF4, 0xDB, 0x7B, 0xFB, 0xC8,
0x4A, 0xD3, 0xE6, 0x6B, 0x45, 0x7D, 0xE8, 0x4B,
0xD6, 0x32, 0xD8, 0xFD, 0x37, 0x71, 0xF1, 0xE1,
@ -239,10 +150,10 @@ class Crypt_Twofish extends Crypt_Base {
/**
* M-Table
*
* @var Array
* @var array
* @access private
*/
var $m0 = array (
var $m0 = array(
0xBCBC3275, 0xECEC21F3, 0x202043C6, 0xB3B3C9F4, 0xDADA03DB, 0x02028B7B, 0xE2E22BFB, 0x9E9EFAC8,
0xC9C9EC4A, 0xD4D409D3, 0x18186BE6, 0x1E1E9F6B, 0x98980E45, 0xB2B2387D, 0xA6A6D2E8, 0x2626B74B,
0x3C3C57D6, 0x93938A32, 0x8282EED8, 0x525298FD, 0x7B7BD437, 0xBBBB3771, 0x5B5B97F1, 0x474783E1,
@ -280,10 +191,10 @@ class Crypt_Twofish extends Crypt_Base {
/**
* M-Table
*
* @var Array
* @var array
* @access private
*/
var $m1 = array (
var $m1 = array(
0xA9D93939, 0x67901717, 0xB3719C9C, 0xE8D2A6A6, 0x04050707, 0xFD985252, 0xA3658080, 0x76DFE4E4,
0x9A084545, 0x92024B4B, 0x80A0E0E0, 0x78665A5A, 0xE4DDAFAF, 0xDDB06A6A, 0xD1BF6363, 0x38362A2A,
0x0D54E6E6, 0xC6432020, 0x3562CCCC, 0x98BEF2F2, 0x181E1212, 0xF724EBEB, 0xECD7A1A1, 0x6C774141,
@ -321,10 +232,10 @@ class Crypt_Twofish extends Crypt_Base {
/**
* M-Table
*
* @var Array
* @var array
* @access private
*/
var $m2 = array (
var $m2 = array(
0xBC75BC32, 0xECF3EC21, 0x20C62043, 0xB3F4B3C9, 0xDADBDA03, 0x027B028B, 0xE2FBE22B, 0x9EC89EFA,
0xC94AC9EC, 0xD4D3D409, 0x18E6186B, 0x1E6B1E9F, 0x9845980E, 0xB27DB238, 0xA6E8A6D2, 0x264B26B7,
0x3CD63C57, 0x9332938A, 0x82D882EE, 0x52FD5298, 0x7B377BD4, 0xBB71BB37, 0x5BF15B97, 0x47E14783,
@ -362,10 +273,10 @@ class Crypt_Twofish extends Crypt_Base {
/**
* M-Table
*
* @var Array
* @var array
* @access private
*/
var $m3 = array (
var $m3 = array(
0xD939A9D9, 0x90176790, 0x719CB371, 0xD2A6E8D2, 0x05070405, 0x9852FD98, 0x6580A365, 0xDFE476DF,
0x08459A08, 0x024B9202, 0xA0E080A0, 0x665A7866, 0xDDAFE4DD, 0xB06ADDB0, 0xBF63D1BF, 0x362A3836,
0x54E60D54, 0x4320C643, 0x62CC3562, 0xBEF298BE, 0x1E12181E, 0x24EBF724, 0xD7A1ECD7, 0x77416C77,
@ -403,7 +314,7 @@ class Crypt_Twofish extends Crypt_Base {
/**
* The Key Schedule Array
*
* @var Array
* @var array
* @access private
*/
var $K = array();
@ -411,7 +322,7 @@ class Crypt_Twofish extends Crypt_Base {
/**
* The Key depended S-Table 0
*
* @var Array
* @var array
* @access private
*/
var $S0 = array();
@ -419,7 +330,7 @@ class Crypt_Twofish extends Crypt_Base {
/**
* The Key depended S-Table 1
*
* @var Array
* @var array
* @access private
*/
var $S1 = array();
@ -427,7 +338,7 @@ class Crypt_Twofish extends Crypt_Base {
/**
* The Key depended S-Table 2
*
* @var Array
* @var array
* @access private
*/
var $S2 = array();
@ -435,7 +346,7 @@ class Crypt_Twofish extends Crypt_Base {
/**
* The Key depended S-Table 3
*
* @var Array
* @var array
* @access private
*/
var $S3 = array();
@ -443,75 +354,86 @@ class Crypt_Twofish extends Crypt_Base {
/**
* Holds the last used key
*
* @var Array
* @var array
* @access private
*/
var $kl;
/**
* The Key Length (in bytes)
*
* @see Crypt_Twofish::setKeyLength()
* @var int
* @access private
*/
var $key_length = 16;
/**
* Default Constructor.
*
* Determines whether or not the mcrypt extension should be used.
*
* $mode could be:
*
* - CRYPT_TWOFISH_MODE_ECB
*
* - CRYPT_TWOFISH_MODE_CBC
*
* - CRYPT_TWOFISH_MODE_CTR
*
* - CRYPT_TWOFISH_MODE_CFB
*
* - CRYPT_TWOFISH_MODE_OFB
*
* If not explictly set, CRYPT_TWOFISH_MODE_CBC will be used.
*
* @see Crypt_Base::Crypt_Base()
* @param optional Integer $mode
* @param int $mode
* @access public
* @throws \InvalidArgumentException if an invalid / unsupported mode is provided
*/
function Crypt_Twofish($mode = CRYPT_TWOFISH_MODE_CBC)
function __construct($mode)
{
parent::Crypt_Base($mode);
if ($mode == self::MODE_STREAM) {
throw new \InvalidArgumentException('Block ciphers cannot be ran in stream mode');
}
parent::__construct($mode);
}
/**
* Sets the key length.
*
* Valid key lengths are 128, 192 or 256 bits
*
* @access public
* @param int $length
*/
function setKeyLength($length)
{
switch ($length) {
case 128:
case 192:
case 256:
break;
default:
throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes 16, 24 or 32 supported');
}
parent::setKeyLength($length);
}
/**
* Sets the key.
*
* Keys can be of any length. Twofish, itself, requires the use of a key that's 128, 192 or 256-bits long.
* If the key is less than 256-bits 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 a 128 bits key to be all null bytes.
* Rijndael supports five different key lengths
*
* @see setKeyLength()
* @access public
* @see Crypt_Base::setKey()
* @param String $key
* @param string $key
* @throws \LengthException if the key length isn't supported
*/
function setKey($key)
{
$keylength = strlen($key);
switch (true) {
case $keylength <= 16:
$key = str_pad($key, 16, "\0");
switch (strlen($key)) {
case 16:
case 24:
case 32:
break;
case $keylength <= 24:
$key = str_pad($key, 24, "\0");
break;
case $keylength < 32:
$key = str_pad($key, 32, "\0");
break;
case $keylength > 32:
$key = substr($key, 0, 32);
default:
throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes 16, 24 or 32 supported');
}
parent::setKey($key);
}
/**
* Setup the key (expansion)
*
* @see Crypt_Base::_setupKey()
* @see \phpseclib\Crypt\Base::_setupKey()
* @access private
*/
function _setupKey()
@ -536,9 +458,9 @@ class Crypt_Twofish extends Crypt_Base {
switch (strlen($this->key)) {
case 16:
list ($s7, $s6, $s5, $s4) = $this->_mdsrem($le_longs[1], $le_longs[2]);
list ($s3, $s2, $s1, $s0) = $this->_mdsrem($le_longs[3], $le_longs[4]);
for ($i = 0, $j = 1; $i < 40; $i+= 2,$j+= 2) {
list($s7, $s6, $s5, $s4) = $this->_mdsrem($le_longs[1], $le_longs[2]);
list($s3, $s2, $s1, $s0) = $this->_mdsrem($le_longs[3], $le_longs[4]);
for ($i = 0, $j = 1; $i < 40; $i+= 2, $j+= 2) {
$A = $m0[$q0[$q0[$i] ^ $key[ 9]] ^ $key[1]] ^
$m1[$q0[$q1[$i] ^ $key[10]] ^ $key[2]] ^
$m2[$q1[$q0[$i] ^ $key[11]] ^ $key[3]] ^
@ -559,9 +481,9 @@ class Crypt_Twofish extends Crypt_Base {
}
break;
case 24:
list ($sb, $sa, $s9, $s8) = $this->_mdsrem($le_longs[1], $le_longs[2]);
list ($s7, $s6, $s5, $s4) = $this->_mdsrem($le_longs[3], $le_longs[4]);
list ($s3, $s2, $s1, $s0) = $this->_mdsrem($le_longs[5], $le_longs[6]);
list($sb, $sa, $s9, $s8) = $this->_mdsrem($le_longs[1], $le_longs[2]);
list($s7, $s6, $s5, $s4) = $this->_mdsrem($le_longs[3], $le_longs[4]);
list($s3, $s2, $s1, $s0) = $this->_mdsrem($le_longs[5], $le_longs[6]);
for ($i = 0, $j = 1; $i < 40; $i+= 2, $j+= 2) {
$A = $m0[$q0[$q0[$q1[$i] ^ $key[17]] ^ $key[ 9]] ^ $key[1]] ^
$m1[$q0[$q1[$q1[$i] ^ $key[18]] ^ $key[10]] ^ $key[2]] ^
@ -583,10 +505,10 @@ class Crypt_Twofish extends Crypt_Base {
}
break;
default: // 32
list ($sf, $se, $sd, $sc) = $this->_mdsrem($le_longs[1], $le_longs[2]);
list ($sb, $sa, $s9, $s8) = $this->_mdsrem($le_longs[3], $le_longs[4]);
list ($s7, $s6, $s5, $s4) = $this->_mdsrem($le_longs[5], $le_longs[6]);
list ($s3, $s2, $s1, $s0) = $this->_mdsrem($le_longs[7], $le_longs[8]);
list($sf, $se, $sd, $sc) = $this->_mdsrem($le_longs[1], $le_longs[2]);
list($sb, $sa, $s9, $s8) = $this->_mdsrem($le_longs[3], $le_longs[4]);
list($s7, $s6, $s5, $s4) = $this->_mdsrem($le_longs[5], $le_longs[6]);
list($s3, $s2, $s1, $s0) = $this->_mdsrem($le_longs[7], $le_longs[8]);
for ($i = 0, $j = 1; $i < 40; $i+= 2, $j+= 2) {
$A = $m0[$q0[$q0[$q1[$q1[$i] ^ $key[25]] ^ $key[17]] ^ $key[ 9]] ^ $key[1]] ^
$m1[$q0[$q1[$q1[$q0[$i] ^ $key[26]] ^ $key[18]] ^ $key[10]] ^ $key[2]] ^
@ -619,9 +541,9 @@ class Crypt_Twofish extends Crypt_Base {
* _mdsrem function using by the twofish cipher algorithm
*
* @access private
* @param String $A
* @param String $B
* @return Array
* @param string $A
* @param string $B
* @return array
*/
function _mdsrem($A, $B)
{
@ -648,7 +570,9 @@ class Crypt_Twofish extends Crypt_Base {
$u^= 0x7fffffff & ($t >> 1);
// Add the modular polynomial on underflow.
if ($t & 0x01) $u^= 0xa6 ;
if ($t & 0x01) {
$u^= 0xa6 ;
}
// Remove t * (a + 1/a) * (x^3 + x).
$B^= ($u << 24) | ($u << 8);
@ -665,8 +589,8 @@ class Crypt_Twofish extends Crypt_Base {
* Encrypts a block
*
* @access private
* @param String $in
* @return String
* @param string $in
* @return string
*/
function _encryptBlock($in)
{
@ -709,18 +633,20 @@ class Crypt_Twofish extends Crypt_Base {
$R1 = ((($R1 >> 31) & 1) | ($R1 << 1)) ^ ($t0 + ($t1 << 1) + $K[++$ki]);
}
// @codingStandardsIgnoreStart
return pack("V4", $K[4] ^ $R2,
$K[5] ^ $R3,
$K[6] ^ $R0,
$K[7] ^ $R1);
// @codingStandardsIgnoreEnd
}
/**
* Decrypts a block
*
* @access private
* @param String $in
* @return String
* @param string $in
* @return string
*/
function _decryptBlock($in)
{
@ -763,38 +689,38 @@ class Crypt_Twofish extends Crypt_Base {
$R0 = ($R0 >> 31 & 0x1 | $R0 << 1) ^ ($t0 + $t1 + $K[--$ki]);
}
// @codingStandardsIgnoreStart
return pack("V4", $K[0] ^ $R2,
$K[1] ^ $R3,
$K[2] ^ $R0,
$K[3] ^ $R1);
// @codingStandardsIgnoreEnd
}
/**
* Setup the performance-optimized function for de/encrypt()
*
* @see Crypt_Base::_setupInlineCrypt()
* @see \phpseclib\Crypt\Base::_setupInlineCrypt()
* @access private
*/
function _setupInlineCrypt()
{
$lambda_functions =& Crypt_Twofish::_getLambdaFunctions();
$lambda_functions =& self::_getLambdaFunctions();
// Max. 10 Ultra-Hi-optimized inline-crypt functions. After that, we'll (still) create very fast code, but not the ultimate fast one.
$gen_hi_opt_code = (bool)( count($lambda_functions) < 10 );
// (Currently, for Crypt_Twofish, one generated $lambda_function cost on php5.5@32bit ~140kb unfreeable mem and ~240kb on php5.5@64bit)
$gen_hi_opt_code = (bool)(count($lambda_functions) < 10);
switch (true) {
case $gen_hi_opt_code:
$code_hash = md5(str_pad("Crypt_Twofish, {$this->mode}, ", 32, "\0") . $this->key);
break;
default:
// Generation of a uniqe hash for our generated code
$code_hash = "Crypt_Twofish, {$this->mode}";
if ($gen_hi_opt_code) {
$code_hash = str_pad($code_hash, 32) . $this->_hashInlineCryptFunction($this->key);
}
if (!isset($lambda_functions[$code_hash])) {
switch (true) {
case $gen_hi_opt_code:
$K = $this->K;
$init_crypt = '
static $S0, $S1, $S2, $S3;
if (!$S0) {
@ -812,7 +738,6 @@ class Crypt_Twofish extends Crypt_Base {
for ($i = 0; $i < 40; ++$i) {
$K[] = '$K_' . $i;
}
$init_crypt = '
$S0 = $self->S0;
$S1 = $self->S1;
@ -919,6 +844,3 @@ class Crypt_Twofish extends Crypt_Base {
$this->inline_crypt = $lambda_functions[$code_hash];
}
}
// vim: ts=4:sw=4:et:
// vim6: fdl=1:

26
plugins/OStatus/extlib/phpseclib/Exception/BadConfigurationException.php Normal file
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@ -0,0 +1,26 @@
<?php
/**
* BadConfigurationException
*
* PHP version 5
*
* @category Exception
* @package BadConfigurationException
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Exception;
/**
* BadConfigurationException
*
* @package BadConfigurationException
* @author Jim Wigginton <terrafrost@php.net>
*/
class BadConfigurationException extends \RuntimeException
{
}

26
plugins/OStatus/extlib/phpseclib/Exception/FileNotFoundException.php Normal file
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@ -0,0 +1,26 @@
<?php
/**
* FileNotFoundException
*
* PHP version 5
*
* @category Exception
* @package FileNotFoundException
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Exception;
/**
* FileNotFoundException
*
* @package FileNotFoundException
* @author Jim Wigginton <terrafrost@php.net>
*/
class FileNotFoundException extends \RuntimeException
{
}

26
plugins/OStatus/extlib/phpseclib/Exception/NoSupportedAlgorithmsException.php Normal file
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@ -0,0 +1,26 @@
<?php
/**
* NoSupportedAlgorithmsException
*
* PHP version 5
*
* @category Exception
* @package NoSupportedAlgorithmsException
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Exception;
/**
* NoSupportedAlgorithmsException
*
* @package NoSupportedAlgorithmsException
* @author Jim Wigginton <terrafrost@php.net>
*/
class NoSupportedAlgorithmsException extends \RuntimeException
{
}

26
plugins/OStatus/extlib/phpseclib/Exception/UnsupportedAlgorithmException.php Normal file
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@ -0,0 +1,26 @@
<?php
/**
* UnsupportedAlgorithmException
*
* PHP version 5
*
* @category Exception
* @package UnsupportedAlgorithmException
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2015 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Exception;
/**
* UnsupportedAlgorithmException
*
* @package UnsupportedAlgorithmException
* @author Jim Wigginton <terrafrost@php.net>
*/
class UnsupportedAlgorithmException extends \RuntimeException
{
}

574
plugins/OStatus/extlib/phpseclib/File/ANSI.php Normal file
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@ -0,0 +1,574 @@
<?php
/**
* Pure-PHP ANSI Decoder
*
* PHP version 5
*
* If you call read() in \phpseclib\Net\SSH2 you may get {@link http://en.wikipedia.org/wiki/ANSI_escape_code ANSI escape codes} back.
* They'd look like chr(0x1B) . '[00m' or whatever (0x1B = ESC). They tell a
* {@link http://en.wikipedia.org/wiki/Terminal_emulator terminal emulator} how to format the characters, what
* color to display them in, etc. \phpseclib\File\ANSI is a {@link http://en.wikipedia.org/wiki/VT100 VT100} terminal emulator.
*
* @category File
* @package ANSI
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2012 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\File;
/**
* Pure-PHP ANSI Decoder
*
* @package ANSI
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class ANSI
{
/**
* Max Width
*
* @var int
* @access private
*/
var $max_x;
/**
* Max Height
*
* @var int
* @access private
*/
var $max_y;
/**
* Max History
*
* @var int
* @access private
*/
var $max_history;
/**
* History
*
* @var array
* @access private
*/
var $history;
/**
* History Attributes
*
* @var array
* @access private
*/
var $history_attrs;
/**
* Current Column
*
* @var int
* @access private
*/
var $x;
/**
* Current Row
*
* @var int
* @access private
*/
var $y;
/**
* Old Column
*
* @var int
* @access private
*/
var $old_x;
/**
* Old Row
*
* @var int
* @access private
*/
var $old_y;
/**
* An empty attribute cell
*
* @var object
* @access private
*/
var $base_attr_cell;
/**
* The current attribute cell
*
* @var object
* @access private
*/
var $attr_cell;
/**
* An empty attribute row
*
* @var array
* @access private
*/
var $attr_row;
/**
* The current screen text
*
* @var array
* @access private
*/
var $screen;
/**
* The current screen attributes
*
* @var array
* @access private
*/
var $attrs;
/**
* Current ANSI code
*
* @var string
* @access private
*/
var $ansi;
/**
* Tokenization
*
* @var array
* @access private
*/
var $tokenization;
/**
* Default Constructor.
*
* @return \phpseclib\File\ANSI
* @access public
*/
function __construct()
{
$attr_cell = new \stdClass();
$attr_cell->bold = false;
$attr_cell->underline = false;
$attr_cell->blink = false;
$attr_cell->background = 'black';
$attr_cell->foreground = 'white';
$attr_cell->reverse = false;
$this->base_attr_cell = clone $attr_cell;
$this->attr_cell = clone $attr_cell;
$this->setHistory(200);
$this->setDimensions(80, 24);
}
/**
* Set terminal width and height
*
* Resets the screen as well
*
* @param int $x
* @param int $y
* @access public
*/
function setDimensions($x, $y)
{
$this->max_x = $x - 1;
$this->max_y = $y - 1;
$this->x = $this->y = 0;
$this->history = $this->history_attrs = array();
$this->attr_row = array_fill(0, $this->max_x + 2, $this->base_attr_cell);
$this->screen = array_fill(0, $this->max_y + 1, '');
$this->attrs = array_fill(0, $this->max_y + 1, $this->attr_row);
$this->ansi = '';
}
/**
* Set the number of lines that should be logged past the terminal height
*
* @param int $x
* @param int $y
* @access public
*/
function setHistory($history)
{
$this->max_history = $history;
}
/**
* Load a string
*
* @param string $source
* @access public
*/
function loadString($source)
{
$this->setDimensions($this->max_x + 1, $this->max_y + 1);
$this->appendString($source);
}
/**
* Appdend a string
*
* @param string $source
* @access public
*/
function appendString($source)
{
$this->tokenization = array('');
for ($i = 0; $i < strlen($source); $i++) {
if (strlen($this->ansi)) {
$this->ansi.= $source[$i];
$chr = ord($source[$i]);
// http://en.wikipedia.org/wiki/ANSI_escape_code#Sequence_elements
// single character CSI's not currently supported
switch (true) {
case $this->ansi == "\x1B=":
$this->ansi = '';
continue 2;
case strlen($this->ansi) == 2 && $chr >= 64 && $chr <= 95 && $chr != ord('['):
case strlen($this->ansi) > 2 && $chr >= 64 && $chr <= 126:
break;
default:
continue 2;
}
$this->tokenization[] = $this->ansi;
$this->tokenization[] = '';
// http://ascii-table.com/ansi-escape-sequences-vt-100.php
switch ($this->ansi) {
case "\x1B[H": // Move cursor to upper left corner
$this->old_x = $this->x;
$this->old_y = $this->y;
$this->x = $this->y = 0;
break;
case "\x1B[J": // Clear screen from cursor down
$this->history = array_merge($this->history, array_slice(array_splice($this->screen, $this->y + 1), 0, $this->old_y));
$this->screen = array_merge($this->screen, array_fill($this->y, $this->max_y, ''));
$this->history_attrs = array_merge($this->history_attrs, array_slice(array_splice($this->attrs, $this->y + 1), 0, $this->old_y));
$this->attrs = array_merge($this->attrs, array_fill($this->y, $this->max_y, $this->attr_row));
if (count($this->history) == $this->max_history) {
array_shift($this->history);
array_shift($this->history_attrs);
}
case "\x1B[K": // Clear screen from cursor right
$this->screen[$this->y] = substr($this->screen[$this->y], 0, $this->x);
array_splice($this->attrs[$this->y], $this->x + 1, $this->max_x - $this->x, array_fill($this->x, $this->max_x - $this->x - 1, $this->base_attr_cell));
break;
case "\x1B[2K": // Clear entire line
$this->screen[$this->y] = str_repeat(' ', $this->x);
$this->attrs[$this->y] = $this->attr_row;
break;
case "\x1B[?1h": // set cursor key to application
case "\x1B[?25h": // show the cursor
case "\x1B(B": // set united states g0 character set
break;
case "\x1BE": // Move to next line
$this->_newLine();
$this->x = 0;
break;
default:
switch (true) {
case preg_match('#\x1B\[(\d+)B#', $this->ansi, $match): // Move cursor down n lines
$this->old_y = $this->y;
$this->y+= $match[1];
break;
case preg_match('#\x1B\[(\d+);(\d+)H#', $this->ansi, $match): // Move cursor to screen location v,h
$this->old_x = $this->x;
$this->old_y = $this->y;
$this->x = $match[2] - 1;
$this->y = $match[1] - 1;
break;
case preg_match('#\x1B\[(\d+)C#', $this->ansi, $match): // Move cursor right n lines
$this->old_x = $this->x;
$this->x+= $match[1];
break;
case preg_match('#\x1B\[(\d+)D#', $this->ansi, $match): // Move cursor left n lines
$this->old_x = $this->x;
$this->x-= $match[1];
break;
case preg_match('#\x1B\[(\d+);(\d+)r#', $this->ansi, $match): // Set top and bottom lines of a window
break;
case preg_match('#\x1B\[(\d*(?:;\d*)*)m#', $this->ansi, $match): // character attributes
$attr_cell = &$this->attr_cell;
$mods = explode(';', $match[1]);
foreach ($mods as $mod) {
switch ($mod) {
case 0: // Turn off character attributes
$attr_cell = clone $this->base_attr_cell;
break;
case 1: // Turn bold mode on
$attr_cell->bold = true;
break;
case 4: // Turn underline mode on
$attr_cell->underline = true;
break;
case 5: // Turn blinking mode on
$attr_cell->blink = true;
break;
case 7: // Turn reverse video on
$attr_cell->reverse = !$attr_cell->reverse;
$temp = $attr_cell->background;
$attr_cell->background = $attr_cell->foreground;
$attr_cell->foreground = $temp;
break;
default: // set colors
//$front = $attr_cell->reverse ? &$attr_cell->background : &$attr_cell->foreground;
$front = &$attr_cell->{ $attr_cell->reverse ? 'background' : 'foreground' };
//$back = $attr_cell->reverse ? &$attr_cell->foreground : &$attr_cell->background;
$back = &$attr_cell->{ $attr_cell->reverse ? 'foreground' : 'background' };
switch ($mod) {
// @codingStandardsIgnoreStart
case 30: $front = 'black'; break;
case 31: $front = 'red'; break;
case 32: $front = 'green'; break;
case 33: $front = 'yellow'; break;
case 34: $front = 'blue'; break;
case 35: $front = 'magenta'; break;
case 36: $front = 'cyan'; break;
case 37: $front = 'white'; break;
case 40: $back = 'black'; break;
case 41: $back = 'red'; break;
case 42: $back = 'green'; break;
case 43: $back = 'yellow'; break;
case 44: $back = 'blue'; break;
case 45: $back = 'magenta'; break;
case 46: $back = 'cyan'; break;
case 47: $back = 'white'; break;
// @codingStandardsIgnoreEnd
default:
//user_error('Unsupported attribute: ' . $mod);
$this->ansi = '';
break 2;
}
}
}
break;
default:
//user_error("{$this->ansi} is unsupported\r\n");
}
}
$this->ansi = '';
continue;
}
$this->tokenization[count($this->tokenization) - 1].= $source[$i];
switch ($source[$i]) {
case "\r":
$this->x = 0;
break;
case "\n":
$this->_newLine();
break;
case "\x08": // backspace
if ($this->x) {
$this->x--;
$this->attrs[$this->y][$this->x] = clone $this->base_attr_cell;
$this->screen[$this->y] = substr_replace(
$this->screen[$this->y],
$source[$i],
$this->x,
1
);
}
break;
case "\x0F": // shift
break;
case "\x1B": // start ANSI escape code
$this->tokenization[count($this->tokenization) - 1] = substr($this->tokenization[count($this->tokenization) - 1], 0, -1);
//if (!strlen($this->tokenization[count($this->tokenization) - 1])) {
// array_pop($this->tokenization);
//}
$this->ansi.= "\x1B";
break;
default:
$this->attrs[$this->y][$this->x] = clone $this->attr_cell;
if ($this->x > strlen($this->screen[$this->y])) {
$this->screen[$this->y] = str_repeat(' ', $this->x);
}
$this->screen[$this->y] = substr_replace(
$this->screen[$this->y],
$source[$i],
$this->x,
1
);
if ($this->x > $this->max_x) {
$this->x = 0;
$this->y++;
} else {
$this->x++;
}
}
}
}
/**
* Add a new line
*
* Also update the $this->screen and $this->history buffers
*
* @access private
*/
function _newLine()
{
//if ($this->y < $this->max_y) {
// $this->y++;
//}
while ($this->y >= $this->max_y) {
$this->history = array_merge($this->history, array(array_shift($this->screen)));
$this->screen[] = '';
$this->history_attrs = array_merge($this->history_attrs, array(array_shift($this->attrs)));
$this->attrs[] = $this->attr_row;
if (count($this->history) >= $this->max_history) {
array_shift($this->history);
array_shift($this->history_attrs);
}
$this->y--;
}
$this->y++;
}
/**
* Returns the current coordinate without preformating
*
* @access private
* @return string
*/
function _processCoordinate($last_attr, $cur_attr, $char)
{
$output = '';
if ($last_attr != $cur_attr) {
$close = $open = '';
if ($last_attr->foreground != $cur_attr->foreground) {
if ($cur_attr->foreground != 'white') {
$open.= '<span style="color: ' . $cur_attr->foreground . '">';
}
if ($last_attr->foreground != 'white') {
$close = '</span>' . $close;
}
}
if ($last_attr->background != $cur_attr->background) {
if ($cur_attr->background != 'black') {
$open.= '<span style="background: ' . $cur_attr->background . '">';
}
if ($last_attr->background != 'black') {
$close = '</span>' . $close;
}
}
if ($last_attr->bold != $cur_attr->bold) {
if ($cur_attr->bold) {
$open.= '<b>';
} else {
$close = '</b>' . $close;
}
}
if ($last_attr->underline != $cur_attr->underline) {
if ($cur_attr->underline) {
$open.= '<u>';
} else {
$close = '</u>' . $close;
}
}
if ($last_attr->blink != $cur_attr->blink) {
if ($cur_attr->blink) {
$open.= '<blink>';
} else {
$close = '</blink>' . $close;
}
}
$output.= $close . $open;
}
$output.= htmlspecialchars($char);
return $output;
}
/**
* Returns the current screen without preformating
*
* @access private
* @return string
*/
function _getScreen()
{
$output = '';
$last_attr = $this->base_attr_cell;
for ($i = 0; $i <= $this->max_y; $i++) {
for ($j = 0; $j <= $this->max_x; $j++) {
$cur_attr = $this->attrs[$i][$j];
$output.= $this->_processCoordinate($last_attr, $cur_attr, isset($this->screen[$i][$j]) ? $this->screen[$i][$j] : '');
$last_attr = $this->attrs[$i][$j];
}
$output.= "\r\n";
}
$output = substr($output, 0, -2);
// close any remaining open tags
$output.= $this->_processCoordinate($last_attr, $this->base_attr_cell, '');
return rtrim($output);
}
/**
* Returns the current screen
*
* @access public
* @return string
*/
function getScreen()
{
return '<pre width="' . ($this->max_x + 1) . '" style="color: white; background: black">' . $this->_getScreen() . '</pre>';
}
/**
* Returns the current screen and the x previous lines
*
* @access public
* @return string
*/
function getHistory()
{
$scrollback = '';
$last_attr = $this->base_attr_cell;
for ($i = 0; $i < count($this->history); $i++) {
for ($j = 0; $j <= $this->max_x + 1; $j++) {
$cur_attr = $this->history_attrs[$i][$j];
$scrollback.= $this->_processCoordinate($last_attr, $cur_attr, isset($this->history[$i][$j]) ? $this->history[$i][$j] : '');
$last_attr = $this->history_attrs[$i][$j];
}
$scrollback.= "\r\n";
}
$base_attr_cell = $this->base_attr_cell;
$this->base_attr_cell = $last_attr;
$scrollback.= $this->_getScreen();
$this->base_attr_cell = $base_attr_cell;
return '<pre width="' . ($this->max_x + 1) . '" style="color: white; background: black">' . $scrollback . '</span></pre>';
}
}

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<?php
/**
* Pure-PHP ASN.1 Parser
*
* PHP version 5
*
* @category File
* @package ASN1
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2012 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\File\ASN1;
/**
* ASN.1 Element
*
* Bypass normal encoding rules in phpseclib\File\ASN1::encodeDER()
*
* @package ASN1
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class Element
{
/**
* Raw element value
*
* @var string
* @access private
*/
var $element;
/**
* Constructor
*
* @param string $encoded
* @return \phpseclib\File\ASN1\Element
* @access public
*/
function __construct($encoded)
{
$this->element = $encoded;
}
}

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<?php
/**
* Pure-PHP implementation of SCP.
*
* PHP version 5
*
* The API for this library is modeled after the API from PHP's {@link http://php.net/book.ftp FTP extension}.
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $ssh = new \phpseclib\Net\SSH2('www.domain.tld');
* if (!$ssh->login('username', 'password')) {
* exit('bad login');
* }
* $scp = new \phpseclib\Net\SCP($ssh);
*
* $scp->put('abcd', str_repeat('x', 1024*1024));
* ?>
* </code>
*
* @category Net
* @package SCP
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2010 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Net;
use phpseclib\Exception\FileNotFoundException;
/**
* Pure-PHP implementations of SCP.
*
* @package SCP
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class SCP
{
/**#@+
* @access public
* @see \phpseclib\Net\SCP::put()
*/
/**
* Reads data from a local file.
*/
const SOURCE_LOCAL_FILE = 1;
/**
* Reads data from a string.
*/
const SOURCE_STRING = 2;
/**#@-*/
/**#@+
* @access private
* @see \phpseclib\Net\SCP::_send()
* @see \phpseclib\Net\SCP::_receive()
*/
/**
* SSH1 is being used.
*/
const MODE_SSH1 = 1;
/**
* SSH2 is being used.
*/
const MODE_SSH2 = 2;
/**#@-*/
/**
* SSH Object
*
* @var object
* @access private
*/
var $ssh;
/**
* Packet Size
*
* @var int
* @access private
*/
var $packet_size;
/**
* Mode
*
* @var int
* @access private
*/
var $mode;
/**
* Default Constructor.
*
* Connects to an SSH server
*
* @param string $host
* @param int $port
* @param int $timeout
* @return \phpseclib\Net\SCP
* @access public
*/
function __construct($ssh)
{
if ($ssh instanceof SSH2) {
$this->mode = self::MODE_SSH2;
} elseif ($ssh instanceof SSH1) {
$this->packet_size = 50000;
$this->mode = self::MODE_SSH1;
} else {
return;
}
$this->ssh = $ssh;
}
/**
* Uploads a file to the SCP server.
*
* By default, \phpseclib\Net\SCP::put() does not read from the local filesystem. $data is dumped directly into $remote_file.
* So, for example, if you set $data to 'filename.ext' and then do \phpseclib\Net\SCP::get(), you will get a file, twelve bytes
* long, containing 'filename.ext' as its contents.
*
* Setting $mode to self::SOURCE_LOCAL_FILE will change the above behavior. With self::SOURCE_LOCAL_FILE, $remote_file will
* contain as many bytes as filename.ext does on your local filesystem. If your filename.ext is 1MB then that is how
* large $remote_file will be, as well.
*
* Currently, only binary mode is supported. As such, if the line endings need to be adjusted, you will need to take
* care of that, yourself.
*
* @param string $remote_file
* @param string $data
* @param int $mode
* @param callable $callback
* @throws \phpseclib\Exception\FileNotFoundException if you're uploading via a file and the file doesn't exist
* @return bool
* @access public
*/
function put($remote_file, $data, $mode = self::SOURCE_STRING, $callback = null)
{
if (!isset($this->ssh)) {
return false;
}
if (!$this->ssh->exec('scp -t ' . escapeshellarg($remote_file), false)) { // -t = to
return false;
}
$temp = $this->_receive();
if ($temp !== chr(0)) {
return false;
}
if ($this->mode == self::MODE_SSH2) {
$this->packet_size = $this->ssh->packet_size_client_to_server[SSH2::CHANNEL_EXEC] - 4;
}
$remote_file = basename($remote_file);
if ($mode == self::SOURCE_STRING) {
$size = strlen($data);
} else {
if (!is_file($data)) {
throw new FileNotFoundException("$data is not a valid file");
}
$fp = @fopen($data, 'rb');
if (!$fp) {
return false;
}
$size = filesize($data);
}
$this->_send('C0644 ' . $size . ' ' . $remote_file . "\n");
$temp = $this->_receive();
if ($temp !== chr(0)) {
return false;
}
$sent = 0;
while ($sent < $size) {
$temp = $mode & self::SOURCE_STRING ? substr($data, $sent, $this->packet_size) : fread($fp, $this->packet_size);
$this->_send($temp);
$sent+= strlen($temp);
if (is_callable($callback)) {
call_user_func($callback, $sent);
}
}
$this->_close();
if ($mode != self::SOURCE_STRING) {
fclose($fp);
}
return true;
}
/**
* Downloads a file from the SCP server.
*
* Returns a string containing the contents of $remote_file if $local_file is left undefined or a boolean false if
* the operation was unsuccessful. If $local_file is defined, returns true or false depending on the success of the
* operation
*
* @param string $remote_file
* @param string $local_file
* @return mixed
* @access public
*/
function get($remote_file, $local_file = false)
{
if (!isset($this->ssh)) {
return false;
}
if (!$this->ssh->exec('scp -f ' . escapeshellarg($remote_file), false)) { // -f = from
return false;
}
$this->_send("\0");
if (!preg_match('#(?<perms>[^ ]+) (?<size>\d+) (?<name>.+)#', rtrim($this->_receive()), $info)) {
return false;
}
$this->_send("\0");
$size = 0;
if ($local_file !== false) {
$fp = @fopen($local_file, 'wb');
if (!$fp) {
return false;
}
}
$content = '';
while ($size < $info['size']) {
$data = $this->_receive();
// SCP usually seems to split stuff out into 16k chunks
$size+= strlen($data);
if ($local_file === false) {
$content.= $data;
} else {
fputs($fp, $data);
}
}
$this->_close();
if ($local_file !== false) {
fclose($fp);
return true;
}
return $content;
}
/**
* Sends a packet to an SSH server
*
* @param string $data
* @access private
*/
function _send($data)
{
switch ($this->mode) {
case self::MODE_SSH2:
$this->ssh->_send_channel_packet(SSH2::CHANNEL_EXEC, $data);
break;
case self::MODE_SSH1:
$data = pack('CNa*', NET_SSH1_CMSG_STDIN_DATA, strlen($data), $data);
$this->ssh->_send_binary_packet($data);
}
}
/**
* Receives a packet from an SSH server
*
* @return string
* @throws \UnexpectedValueException on receipt of an unexpected packet
* @access private
*/
function _receive()
{
switch ($this->mode) {
case self::MODE_SSH2:
return $this->ssh->_get_channel_packet(SSH2::CHANNEL_EXEC, true);
case self::MODE_SSH1:
if (!$this->ssh->bitmap) {
return false;
}
while (true) {
$response = $this->ssh->_get_binary_packet();
switch ($response[SSH1::RESPONSE_TYPE]) {
case NET_SSH1_SMSG_STDOUT_DATA:
extract(unpack('Nlength', $response[SSH1::RESPONSE_DATA]));
return $this->ssh->_string_shift($response[SSH1::RESPONSE_DATA], $length);
case NET_SSH1_SMSG_STDERR_DATA:
break;
case NET_SSH1_SMSG_EXITSTATUS:
$this->ssh->_send_binary_packet(chr(NET_SSH1_CMSG_EXIT_CONFIRMATION));
fclose($this->ssh->fsock);
$this->ssh->bitmap = 0;
return false;
default:
throw new \UnexpectedValueException('Unknown packet received');
}
}
}
}
/**
* Closes the connection to an SSH server
*
* @access private
*/
function _close()
{
switch ($this->mode) {
case self::MODE_SSH2:
$this->ssh->_close_channel(SSH2::CHANNEL_EXEC, true);
break;
case self::MODE_SSH1:
$this->ssh->disconnect();
}
}
}

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<?php
/**
* SFTP Stream Wrapper
*
* Creates an sftp:// protocol handler that can be used with, for example, fopen(), dir(), etc.
*
* PHP version 5
*
* @category Net
* @package SFTP
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2013 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib\Net\SFTP;
use phpseclib\Crypt\RSA;
use phpseclib\Net\SFTP;
use phpseclib\Net\SSH2;
/**
* SFTP Stream Wrapper
*
* @package SFTP
* @author Jim Wigginton <terrafrost@php.net>
* @access public
*/
class Stream
{
/**
* SFTP instances
*
* Rather than re-create the connection we re-use instances if possible
*
* @var array
*/
static $instances;
/**
* SFTP instance
*
* @var object
* @access private
*/
var $sftp;
/**
* Path
*
* @var string
* @access private
*/
var $path;
/**
* Mode
*
* @var string
* @access private
*/
var $mode;
/**
* Position
*
* @var int
* @access private
*/
var $pos;
/**
* Size
*
* @var int
* @access private
*/
var $size;
/**
* Directory entries
*
* @var array
* @access private
*/
var $entries;
/**
* EOF flag
*
* @var bool
* @access private
*/
var $eof;
/**
* Context resource
*
* Technically this needs to be publically accessible so PHP can set it directly
*
* @var resource
* @access public
*/
var $context;
/**
* Notification callback function
*
* @var callable
* @access public
*/
var $notification;
/**
* Registers this class as a URL wrapper.
*
* @param string $protocol The wrapper name to be registered.
* @return bool True on success, false otherwise.
* @access public
*/
static function register($protocol = 'sftp')
{
if (in_array($protocol, stream_get_wrappers(), true)) {
return false;
}
return stream_wrapper_register($protocol, get_called_class());
}
/**
* The Constructor
*
* @access public
*/
function __construct()
{
if (defined('NET_SFTP_STREAM_LOGGING')) {
echo "__construct()\r\n";
}
}
/**
* Path Parser
*
* Extract a path from a URI and actually connect to an SSH server if appropriate
*
* If "notification" is set as a context parameter the message code for successful login is
* NET_SSH2_MSG_USERAUTH_SUCCESS. For a failed login it's NET_SSH2_MSG_USERAUTH_FAILURE.
*
* @param string $path
* @return string
* @access private
*/
function _parse_path($path)
{
$orig = $path;
extract(parse_url($path) + array('port' => 22));
if (isset($query)) {
$path.= '?' . $query;
} elseif (preg_match('/(\?|\?#)$/', $orig)) {
$path.= '?';
}
if (isset($fragment)) {
$path.= '#' . $fragment;
} elseif ($orig[strlen($orig) - 1] == '#') {
$path.= '#';
}
if (!isset($host)) {
return false;
}
if (isset($this->context)) {
$context = stream_context_get_params($this->context);
if (isset($context['notification'])) {
$this->notification = $context['notification'];
}
}
if (preg_match('/^{[a-z0-9]+}$/i', $host)) {
$host = SSH2::getConnectionByResourceId($host);
if ($host === false) {
return false;
}
$this->sftp = $host;
} else {
if (isset($this->context)) {
$context = stream_context_get_options($this->context);
}
if (isset($context[$scheme]['session'])) {
$sftp = $context[$scheme]['session'];
}
if (isset($context[$scheme]['sftp'])) {
$sftp = $context[$scheme]['sftp'];
}
if (isset($sftp) && $sftp instanceof SFTP) {
$this->sftp = $sftp;
return $path;
}
if (isset($context[$scheme]['username'])) {
$user = $context[$scheme]['username'];
}
if (isset($context[$scheme]['password'])) {
$pass = $context[$scheme]['password'];
}
if (isset($context[$scheme]['privkey']) && $context[$scheme]['privkey'] instanceof RSA) {
$pass = $context[$scheme]['privkey'];
}
if (!isset($user) || !isset($pass)) {
return false;
}
// casting $pass to a string is necessary in the event that it's a \phpseclib\Crypt\RSA object
if (isset(self::$instances[$host][$port][$user][(string) $pass])) {
$this->sftp = self::$instances[$host][$port][$user][(string) $pass];
} else {
$this->sftp = new SFTP($host, $port);
$this->sftp->disableStatCache();
if (isset($this->notification) && is_callable($this->notification)) {
/* if !is_callable($this->notification) we could do this:
user_error('fopen(): failed to call user notifier', E_USER_WARNING);
the ftp wrapper gives errors like that when the notifier isn't callable.
i've opted not to do that, however, since the ftp wrapper gives the line
on which the fopen occurred as the line number - not the line that the
user_error is on.
*/
call_user_func($this->notification, STREAM_NOTIFY_CONNECT, STREAM_NOTIFY_SEVERITY_INFO, '', 0, 0, 0);
call_user_func($this->notification, STREAM_NOTIFY_AUTH_REQUIRED, STREAM_NOTIFY_SEVERITY_INFO, '', 0, 0, 0);
if (!$this->sftp->login($user, $pass)) {
call_user_func($this->notification, STREAM_NOTIFY_AUTH_RESULT, STREAM_NOTIFY_SEVERITY_ERR, 'Login Failure', NET_SSH2_MSG_USERAUTH_FAILURE, 0, 0);
return false;
}
call_user_func($this->notification, STREAM_NOTIFY_AUTH_RESULT, STREAM_NOTIFY_SEVERITY_INFO, 'Login Success', NET_SSH2_MSG_USERAUTH_SUCCESS, 0, 0);
} else {
if (!$this->sftp->login($user, $pass)) {
return false;
}
}
self::$instances[$host][$port][$user][(string) $pass] = $this->sftp;
}
}
return $path;
}
/**
* Opens file or URL
*
* @param string $path
* @param string $mode
* @param int $options
* @param string $opened_path
* @return bool
* @access public
*/
function _stream_open($path, $mode, $options, &$opened_path)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
$this->path = $path;
$this->size = $this->sftp->size($path);
$this->mode = preg_replace('#[bt]$#', '', $mode);
$this->eof = false;
if ($this->size === false) {
if ($this->mode[0] == 'r') {
return false;
} else {
$this->sftp->touch($path);
$this->size = 0;
}
} else {
switch ($this->mode[0]) {
case 'x':
return false;
case 'w':
$this->sftp->truncate($path, 0);
$this->size = 0;
}
}
$this->pos = $this->mode[0] != 'a' ? 0 : $this->size;
return true;
}
/**
* Read from stream
*
* @param int $count
* @return mixed
* @access public
*/
function _stream_read($count)
{
switch ($this->mode) {
case 'w':
case 'a':
case 'x':
case 'c':
return false;
}
// commented out because some files - eg. /dev/urandom - will say their size is 0 when in fact it's kinda infinite
//if ($this->pos >= $this->size) {
// $this->eof = true;
// return false;
//}
$result = $this->sftp->get($this->path, false, $this->pos, $count);
if (isset($this->notification) && is_callable($this->notification)) {
if ($result === false) {
call_user_func($this->notification, STREAM_NOTIFY_FAILURE, STREAM_NOTIFY_SEVERITY_ERR, $this->sftp->getLastSFTPError(), NET_SFTP_OPEN, 0, 0);
return 0;
}
// seems that PHP calls stream_read in 8k chunks
call_user_func($this->notification, STREAM_NOTIFY_PROGRESS, STREAM_NOTIFY_SEVERITY_INFO, '', 0, strlen($result), $this->size);
}
if (empty($result)) { // ie. false or empty string
$this->eof = true;
return false;
}
$this->pos+= strlen($result);
return $result;
}
/**
* Write to stream
*
* @param string $data
* @return mixed
* @access public
*/
function _stream_write($data)
{
switch ($this->mode) {
case 'r':
return false;
}
$result = $this->sftp->put($this->path, $data, SFTP::SOURCE_STRING, $this->pos);
if (isset($this->notification) && is_callable($this->notification)) {
if (!$result) {
call_user_func($this->notification, STREAM_NOTIFY_FAILURE, STREAM_NOTIFY_SEVERITY_ERR, $this->sftp->getLastSFTPError(), NET_SFTP_OPEN, 0, 0);
return 0;
}
// seems that PHP splits up strings into 8k blocks before calling stream_write
call_user_func($this->notification, STREAM_NOTIFY_PROGRESS, STREAM_NOTIFY_SEVERITY_INFO, '', 0, strlen($data), strlen($data));
}
if ($result === false) {
return false;
}
$this->pos+= strlen($data);
if ($this->pos > $this->size) {
$this->size = $this->pos;
}
$this->eof = false;
return strlen($data);
}
/**
* Retrieve the current position of a stream
*
* @return int
* @access public
*/
function _stream_tell()
{
return $this->pos;
}
/**
* Tests for end-of-file on a file pointer
*
* In my testing there are four classes functions that normally effect the pointer:
* fseek, fputs / fwrite, fgets / fread and ftruncate.
*
* Only fgets / fread, however, results in feof() returning true. do fputs($fp, 'aaa') on a blank file and feof()
* will return false. do fread($fp, 1) and feof() will then return true. do fseek($fp, 10) on ablank file and feof()
* will return false. do fread($fp, 1) and feof() will then return true.
*
* @return bool
* @access public
*/
function _stream_eof()
{
return $this->eof;
}
/**
* Seeks to specific location in a stream
*
* @param int $offset
* @param int $whence
* @return bool
* @access public
*/
function _stream_seek($offset, $whence)
{
switch ($whence) {
case SEEK_SET:
if ($offset >= $this->size || $offset < 0) {
return false;
}
break;
case SEEK_CUR:
$offset+= $this->pos;
break;
case SEEK_END:
$offset+= $this->size;
}
$this->pos = $offset;
$this->eof = false;
return true;
}
/**
* Change stream options
*
* @param string $path
* @param int $option
* @param mixed $var
* @return bool
* @access public
*/
function _stream_metadata($path, $option, $var)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
// stream_metadata was introduced in PHP 5.4.0 but as of 5.4.11 the constants haven't been defined
// see http://www.php.net/streamwrapper.stream-metadata and https://bugs.php.net/64246
// and https://github.com/php/php-src/blob/master/main/php_streams.h#L592
switch ($option) {
case 1: // PHP_STREAM_META_TOUCH
return $this->sftp->touch($path, $var[0], $var[1]);
case 2: // PHP_STREAM_OWNER_NAME
case 3: // PHP_STREAM_GROUP_NAME
return false;
case 4: // PHP_STREAM_META_OWNER
return $this->sftp->chown($path, $var);
case 5: // PHP_STREAM_META_GROUP
return $this->sftp->chgrp($path, $var);
case 6: // PHP_STREAM_META_ACCESS
return $this->sftp->chmod($path, $var) !== false;
}
}
/**
* Retrieve the underlaying resource
*
* @param int $cast_as
* @return resource
* @access public
*/
function _stream_cast($cast_as)
{
return $this->sftp->fsock;
}
/**
* Advisory file locking
*
* @param int $operation
* @return bool
* @access public
*/
function _stream_lock($operation)
{
return false;
}
/**
* Renames a file or directory
*
* Attempts to rename oldname to newname, moving it between directories if necessary.
* If newname exists, it will be overwritten. This is a departure from what \phpseclib\Net\SFTP
* does.
*
* @param string $path_from
* @param string $path_to
* @return bool
* @access public
*/
function _rename($path_from, $path_to)
{
$path1 = parse_url($path_from);
$path2 = parse_url($path_to);
unset($path1['path'], $path2['path']);
if ($path1 != $path2) {
return false;
}
$path_from = $this->_parse_path($path_from);
$path_to = parse_url($path_to);
if ($path_from === false) {
return false;
}
$path_to = $path_to['path']; // the $component part of parse_url() was added in PHP 5.1.2
// "It is an error if there already exists a file with the name specified by newpath."
// -- http://tools.ietf.org/html/draft-ietf-secsh-filexfer-02#section-6.5
if (!$this->sftp->rename($path_from, $path_to)) {
if ($this->sftp->stat($path_to)) {
return $this->sftp->delete($path_to, true) && $this->sftp->rename($path_from, $path_to);
}
return false;
}
return true;
}
/**
* Open directory handle
*
* The only $options is "whether or not to enforce safe_mode (0x04)". Since safe mode was deprecated in 5.3 and
* removed in 5.4 I'm just going to ignore it.
*
* Also, nlist() is the best that this function is realistically going to be able to do. When an SFTP client
* sends a SSH_FXP_READDIR packet you don't generally get info on just one file but on multiple files. Quoting
* the SFTP specs:
*
* The SSH_FXP_NAME response has the following format:
*
* uint32 id
* uint32 count
* repeats count times:
* string filename
* string longname
* ATTRS attrs
*
* @param string $path
* @param int $options
* @return bool
* @access public
*/
function _dir_opendir($path, $options)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
$this->pos = 0;
$this->entries = $this->sftp->nlist($path);
return $this->entries !== false;
}
/**
* Read entry from directory handle
*
* @return mixed
* @access public
*/
function _dir_readdir()
{
if (isset($this->entries[$this->pos])) {
return $this->entries[$this->pos++];
}
return false;
}
/**
* Rewind directory handle
*
* @return bool
* @access public
*/
function _dir_rewinddir()
{
$this->pos = 0;
return true;
}
/**
* Close directory handle
*
* @return bool
* @access public
*/
function _dir_closedir()
{
return true;
}
/**
* Create a directory
*
* Only valid $options is STREAM_MKDIR_RECURSIVE
*
* @param string $path
* @param int $mode
* @param int $options
* @return bool
* @access public
*/
function _mkdir($path, $mode, $options)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
return $this->sftp->mkdir($path, $mode, $options & STREAM_MKDIR_RECURSIVE);
}
/**
* Removes a directory
*
* Only valid $options is STREAM_MKDIR_RECURSIVE per <http://php.net/streamwrapper.rmdir>, however,
* <http://php.net/rmdir> does not have a $recursive parameter as mkdir() does so I don't know how
* STREAM_MKDIR_RECURSIVE is supposed to be set. Also, when I try it out with rmdir() I get 8 as
* $options. What does 8 correspond to?
*
* @param string $path
* @param int $mode
* @param int $options
* @return bool
* @access public
*/
function _rmdir($path, $options)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
return $this->sftp->rmdir($path);
}
/**
* Flushes the output
*
* See <http://php.net/fflush>. Always returns true because \phpseclib\Net\SFTP doesn't cache stuff before writing
*
* @return bool
* @access public
*/
function _stream_flush()
{
return true;
}
/**
* Retrieve information about a file resource
*
* @return mixed
* @access public
*/
function _stream_stat()
{
$results = $this->sftp->stat($this->path);
if ($results === false) {
return false;
}
return $results;
}
/**
* Delete a file
*
* @param string $path
* @return bool
* @access public
*/
function _unlink($path)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
return $this->sftp->delete($path, false);
}
/**
* Retrieve information about a file
*
* Ignores the STREAM_URL_STAT_QUIET flag because the entirety of \phpseclib\Net\SFTP\Stream is quiet by default
* might be worthwhile to reconstruct bits 12-16 (ie. the file type) if mode doesn't have them but we'll
* cross that bridge when and if it's reached
*
* @param string $path
* @param int $flags
* @return mixed
* @access public
*/
function _url_stat($path, $flags)
{
$path = $this->_parse_path($path);
if ($path === false) {
return false;
}
$results = $flags & STREAM_URL_STAT_LINK ? $this->sftp->lstat($path) : $this->sftp->stat($path);
if ($results === false) {
return false;
}
return $results;
}
/**
* Truncate stream
*
* @param int $new_size
* @return bool
* @access public
*/
function _stream_truncate($new_size)
{
if (!$this->sftp->truncate($this->path, $new_size)) {
return false;
}
$this->eof = false;
$this->size = $new_size;
return true;
}
/**
* Change stream options
*
* STREAM_OPTION_WRITE_BUFFER isn't supported for the same reason stream_flush isn't.
* The other two aren't supported because of limitations in \phpseclib\Net\SFTP.
*
* @param int $option
* @param int $arg1
* @param int $arg2
* @return bool
* @access public
*/
function _stream_set_option($option, $arg1, $arg2)
{
return false;
}
/**
* Close an resource
*
* @access public
*/
function _stream_close()
{
}
/**
* __call Magic Method
*
* When you're utilizing an SFTP stream you're not calling the methods in this class directly - PHP is calling them for you.
* Which kinda begs the question... what methods is PHP calling and what parameters is it passing to them? This function
* lets you figure that out.
*
* If NET_SFTP_STREAM_LOGGING is defined all calls will be output on the screen and then (regardless of whether or not
* NET_SFTP_STREAM_LOGGING is enabled) the parameters will be passed through to the appropriate method.
*
* @param string
* @param array
* @return mixed
* @access public
*/
function __call($name, $arguments)
{
if (defined('NET_SFTP_STREAM_LOGGING')) {
echo $name . '(';
$last = count($arguments) - 1;
foreach ($arguments as $i => $argument) {
var_export($argument);
if ($i != $last) {
echo ',';
}
}
echo ")\r\n";
}
$name = '_' . $name;
if (!method_exists($this, $name)) {
return false;
}
return call_user_func_array(array($this, $name), $arguments);
}
}

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<?php
/**
* Pure-PHP ssh-agent client.
*
* PHP version 5
*
* Here are some examples of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $agent = new \phpseclib\System\SSH\Agent();
*
* $ssh = new \phpseclib\Net\SSH2('www.domain.tld');
* if (!$ssh->login('username', $agent)) {
* exit('Login Failed');
* }
*
* echo $ssh->exec('pwd');
* echo $ssh->exec('ls -la');
* ?>
* </code>
*
* @category System
* @package SSH\Agent
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2014 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
* @internal See http://api.libssh.org/rfc/PROTOCOL.agent
*/
namespace phpseclib\System\SSH;
use ParagonIE\ConstantTime\Base64;
use phpseclib\Crypt\RSA;
use phpseclib\Exception\BadConfigurationException;
use phpseclib\System\SSH\Agent\Identity;
/**
* Pure-PHP ssh-agent client identity factory
*
* requestIdentities() method pumps out \phpseclib\System\SSH\Agent\Identity objects
*
* @package SSH\Agent
* @author Jim Wigginton <terrafrost@php.net>
* @access internal
*/
class Agent
{
/**#@+
* Message numbers
*
* @access private
*/
// to request SSH1 keys you have to use SSH_AGENTC_REQUEST_RSA_IDENTITIES (1)
const SSH_AGENTC_REQUEST_IDENTITIES = 11;
// this is the SSH2 response; the SSH1 response is SSH_AGENT_RSA_IDENTITIES_ANSWER (2).
const SSH_AGENT_IDENTITIES_ANSWER = 12;
// the SSH1 request is SSH_AGENTC_RSA_CHALLENGE (3)
const SSH_AGENTC_SIGN_REQUEST = 13;
// the SSH1 response is SSH_AGENT_RSA_RESPONSE (4)
const SSH_AGENT_SIGN_RESPONSE = 14;
/**#@-*/
/**@+
* Agent forwarding status
*
* @access private
*/
// no forwarding requested and not active
const FORWARD_NONE = 0;
// request agent forwarding when opportune
const FORWARD_REQUEST = 1;
// forwarding has been request and is active
const FORWARD_ACTIVE = 2;
/**#@-*/
/**
* Unused
*/
const SSH_AGENT_FAILURE = 5;
/**
* Socket Resource
*
* @var resource
* @access private
*/
var $fsock;
/**
* Agent forwarding status
*
* @access private
*/
var $forward_status = self::FORWARD_NONE;
/**
* Buffer for accumulating forwarded authentication
* agent data arriving on SSH data channel destined
* for agent unix socket
*
* @access private
*/
var $socket_buffer = '';
/**
* Tracking the number of bytes we are expecting
* to arrive for the agent socket on the SSH data
* channel
*/
var $expected_bytes = 0;
/**
* Default Constructor
*
* @return \phpseclib\System\SSH\Agent
* @throws \phpseclib\Exception\BadConfigurationException if SSH_AUTH_SOCK cannot be found
* @throws \RuntimeException on connection errors
* @access public
*/
function __construct()
{
switch (true) {
case isset($_SERVER['SSH_AUTH_SOCK']):
$address = $_SERVER['SSH_AUTH_SOCK'];
break;
case isset($_ENV['SSH_AUTH_SOCK']):
$address = $_ENV['SSH_AUTH_SOCK'];
break;
default:
throw new BadConfigurationException('SSH_AUTH_SOCK not found');
}
$this->fsock = fsockopen('unix://' . $address, 0, $errno, $errstr);
if (!$this->fsock) {
throw new \RuntimeException("Unable to connect to ssh-agent (Error $errno: $errstr)");
}
}
/**
* Request Identities
*
* See "2.5.2 Requesting a list of protocol 2 keys"
* Returns an array containing zero or more \phpseclib\System\SSH\Agent\Identity objects
*
* @return array
* @throws \RuntimeException on receipt of unexpected packets
* @access public
*/
function requestIdentities()
{
if (!$this->fsock) {
return array();
}
$packet = pack('NC', 1, self::SSH_AGENTC_REQUEST_IDENTITIES);
if (strlen($packet) != fputs($this->fsock, $packet)) {
throw new \RuntimeException('Connection closed while requesting identities');
}
$length = current(unpack('N', fread($this->fsock, 4)));
$type = ord(fread($this->fsock, 1));
if ($type != self::SSH_AGENT_IDENTITIES_ANSWER) {
throw new \RuntimeException('Unable to request identities');
}
$identities = array();
$keyCount = current(unpack('N', fread($this->fsock, 4)));
for ($i = 0; $i < $keyCount; $i++) {
$length = current(unpack('N', fread($this->fsock, 4)));
$key_blob = fread($this->fsock, $length);
$key_str = 'ssh-rsa ' . Base64::encode($key_blob);
$length = current(unpack('N', fread($this->fsock, 4)));
if ($length) {
$key_str.= ' ' . fread($this->fsock, $length);
}
$length = current(unpack('N', substr($key_blob, 0, 4)));
$key_type = substr($key_blob, 4, $length);
switch ($key_type) {
case 'ssh-rsa':
$key = new RSA();
$key->load($key_str);
break;
case 'ssh-dss':
// not currently supported
break;
}
// resources are passed by reference by default
if (isset($key)) {
$identity = new Identity($this->fsock);
$identity->setPublicKey($key);
$identity->setPublicKeyBlob($key_blob);
$identities[] = $identity;
unset($key);
}
}
return $identities;
}
/**
* Signal that agent forwarding should
* be requested when a channel is opened
*
* @param Net_SSH2 $ssh
* @return bool
* @access public
*/
function startSSHForwarding($ssh)
{
if ($this->forward_status == self::FORWARD_NONE) {
$this->forward_status = self::FORWARD_REQUEST;
}
}
/**
* Request agent forwarding of remote server
*
* @param Net_SSH2 $ssh
* @return bool
* @access private
*/
function _request_forwarding($ssh)
{
$request_channel = $ssh->_get_open_channel();
if ($request_channel === false) {
return false;
}
$packet = pack(
'CNNa*C',
NET_SSH2_MSG_CHANNEL_REQUEST,
$ssh->server_channels[$request_channel],
strlen('auth-agent-req@openssh.com'),
'auth-agent-req@openssh.com',
1
);
$ssh->channel_status[$request_channel] = NET_SSH2_MSG_CHANNEL_REQUEST;
if (!$ssh->_send_binary_packet($packet)) {
return false;
}
$response = $ssh->_get_channel_packet($request_channel);
if ($response === false) {
return false;
}
$ssh->channel_status[$request_channel] = NET_SSH2_MSG_CHANNEL_OPEN;
$this->forward_status = self::FORWARD_ACTIVE;
return true;
}
/**
* On successful channel open
*
* This method is called upon successful channel
* open to give the SSH Agent an opportunity
* to take further action. i.e. request agent forwarding
*
* @param Net_SSH2 $ssh
* @access private
*/
function _on_channel_open($ssh)
{
if ($this->forward_status == self::FORWARD_REQUEST) {
$this->_request_forwarding($ssh);
}
}
/**
* Forward data to SSH Agent and return data reply
*
* @param string $data
* @return data from SSH Agent
* @throws \RuntimeException on connection errors
* @access private
*/
function _forward_data($data)
{
if ($this->expected_bytes > 0) {
$this->socket_buffer.= $data;
$this->expected_bytes -= strlen($data);
} else {
$agent_data_bytes = current(unpack('N', $data));
$current_data_bytes = strlen($data);
$this->socket_buffer = $data;
if ($current_data_bytes != $agent_data_bytes + 4) {
$this->expected_bytes = ($agent_data_bytes + 4) - $current_data_bytes;
return false;
}
}
if (strlen($this->socket_buffer) != fwrite($this->fsock, $this->socket_buffer)) {
throw new \RuntimeException('Connection closed attempting to forward data to SSH agent');
}
$this->socket_buffer = '';
$this->expected_bytes = 0;
$agent_reply_bytes = current(unpack('N', fread($this->fsock, 4)));
$agent_reply_data = fread($this->fsock, $agent_reply_bytes);
$agent_reply_data = current(unpack('a*', $agent_reply_data));
return pack('Na*', $agent_reply_bytes, $agent_reply_data);
}
}

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<?php
/**
* Pure-PHP ssh-agent client.
*
* PHP version 5
*
* @category System
* @package SSH\Agent
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2009 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
* @internal See http://api.libssh.org/rfc/PROTOCOL.agent
*/
namespace phpseclib\System\SSH\Agent;
use phpseclib\Crypt\RSA;
use phpseclib\Exception\UnsupportedAlgorithmException;
use phpseclib\System\SSH\Agent;
/**
* Pure-PHP ssh-agent client identity object
*
* Instantiation should only be performed by \phpseclib\System\SSH\Agent class.
* This could be thought of as implementing an interface that phpseclib\Crypt\RSA
* implements. ie. maybe a Net_SSH_Auth_PublicKey interface or something.
* The methods in this interface would be getPublicKey and sign since those are the
* methods phpseclib looks for to perform public key authentication.
*
* @package SSH\Agent
* @author Jim Wigginton <terrafrost@php.net>
* @access internal
*/
class Identity
{
/**
* Key Object
*
* @var \phpseclib\Crypt\RSA
* @access private
* @see self::getPublicKey()
*/
var $key;
/**
* Key Blob
*
* @var string
* @access private
* @see self::sign()
*/
var $key_blob;
/**
* Socket Resource
*
* @var resource
* @access private
* @see self::sign()
*/
var $fsock;
/**
* Default Constructor.
*
* @param resource $fsock
* @return \phpseclib\System\SSH\Agent\Identity
* @access private
*/
function __construct($fsock)
{
$this->fsock = $fsock;
}
/**
* Set Public Key
*
* Called by \phpseclib\System\SSH\Agent::requestIdentities()
*
* @param \phpseclib\Crypt\RSA $key
* @access private
*/
function setPublicKey($key)
{
$this->key = $key;
$this->key->setPublicKey();
}
/**
* Set Public Key
*
* Called by \phpseclib\System\SSH\Agent::requestIdentities(). The key blob could be extracted from $this->key
* but this saves a small amount of computation.
*
* @param string $key_blob
* @access private
*/
function setPublicKeyBlob($key_blob)
{
$this->key_blob = $key_blob;
}
/**
* Get Public Key
*
* Wrapper for $this->key->getPublicKey()
*
* @param int $type optional
* @return mixed
* @access public
*/
function getPublicKey($type = 'PKCS8')
{
return $this->key->getPublicKey($type);
}
/**
* Sets the hash
*
* ssh-agent only supports signatures with sha1 hashes but to maintain BC with RSA.php this function exists
*
* @param string $hash optional
* @throws \phpseclib\Exception\UnsupportedAlgorithmException if the algorithm is unsupported
* @access public
*/
function setHash($hash = 'sha1')
{
if ($hash != 'sha1') {
throw new UnsupportedAlgorithmException('ssh-agent can only be used with the sha1 hash');
}
}
/**
* Create a signature
*
* See "2.6.2 Protocol 2 private key signature request"
*
* @param string $message
* @param int $padding optional
* @return string
* @throws \RuntimeException on connection errors
* @throws \phpseclib\Exception\UnsupportedAlgorithmException if the algorithm is unsupported
* @access public
*/
function sign($message, $padding = RSA::PADDING_PKCS1)
{
if ($padding != RSA::PADDING_PKCS1 && $padding != RSA::PADDING_RELAXED_PKCS1) {
throw new UnsupportedAlgorithmException('ssh-agent can only create PKCS1 signatures');
}
// the last parameter (currently 0) is for flags and ssh-agent only defines one flag (for ssh-dss): SSH_AGENT_OLD_SIGNATURE
$packet = pack('CNa*Na*N', Agent::SSH_AGENTC_SIGN_REQUEST, strlen($this->key_blob), $this->key_blob, strlen($message), $message, 0);
$packet = pack('Na*', strlen($packet), $packet);
if (strlen($packet) != fputs($this->fsock, $packet)) {
throw new \RuntimeException('Connection closed during signing');
}
$length = current(unpack('N', fread($this->fsock, 4)));
$type = ord(fread($this->fsock, 1));
if ($type != Agent::SSH_AGENT_SIGN_RESPONSE) {
throw new \RuntimeException('Unable to retreive signature');
}
$signature_blob = fread($this->fsock, $length - 1);
// the only other signature format defined - ssh-dss - is the same length as ssh-rsa
// the + 12 is for the other various SSH added length fields
return substr($signature_blob, strlen('ssh-rsa') + 12);
}
}

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<?php
/**
* Bootstrapping File for phpseclib
*
* composer isn't a requirement for phpseclib 2.0 but this file isn't really required
* either. it's a bonus for those using composer but if you're not phpseclib will
* still work
*
* @license http://www.opensource.org/licenses/mit-license.html MIT License
*/
if (extension_loaded('mbstring')) {
// 2 - MB_OVERLOAD_STRING
if (ini_get('mbstring.func_overload') & 2) {
throw new UnexpectedValueException(
'Overloading of string functions using mbstring.func_overload ' .
'is not supported by phpseclib.'
);
}
}