FM / Common

/var/www/cobraambalaj/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/

/var/www/cobraambalaj/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common

Name	Size	Mode	Actions
Formats/	-	0755	rm
Traits/	-	0755	rm
AsymmetricKey.php	15252	0644	edit dl rm
BlockCipher.php	604	0644	edit dl rm
PrivateKey.php	690	0644	edit dl rm
PublicKey.php	669	0644	edit dl rm
StreamCipher.php	1272	0644	edit dl rm
SymmetricKey.php	123104	0644	edit dl rm

Edit: /var/www/cobraambalaj/vendor/phpseclib/phpseclib/phpseclib/Crypt/Common/AsymmetricKey.php (15252B)

<?php

/**
 * Base Class for all asymmetric key ciphers
 *
 * PHP version 5
 *
 * @category  Crypt
 * @package   AsymmetricKey
 * @author    Jim Wigginton <terrafrost@php.net>
 * @copyright 2016 Jim Wigginton
 * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
 * @link      http://phpseclib.sourceforge.net
 */

namespace phpseclib3\Crypt\Common;

use phpseclib3\Exception\UnsupportedFormatException;
use phpseclib3\Exception\NoKeyLoadedException;
use phpseclib3\Math\BigInteger;
use phpseclib3\Crypt\Hash;
use phpseclib3\Crypt\RSA;
use phpseclib3\Crypt\DSA;
use phpseclib3\Crypt\ECDSA;

/**
 * Base Class for all asymmetric cipher classes
 *
 * @package AsymmetricKey
 * @author  Jim Wigginton <terrafrost@php.net>
 */
abstract class AsymmetricKey
{
    /**
     * Precomputed Zero
     *
     * @var \phpseclib3\Math\BigInteger
     * @access private
     */
    protected static $zero;

/**
     * Precomputed One
     *
     * @var \phpseclib3\Math\BigInteger
     * @access private
     */
    protected static $one;

/**
     * Format of the loaded key
     *
     * @var string
     * @access private
     */
    protected $format;

/**
     * Hash function
     *
     * @var \phpseclib3\Crypt\Hash
     * @access private
     */
    protected $hash;

/**
     * HMAC function
     *
     * @var \phpseclib3\Crypt\Hash
     * @access private
     */
    private $hmac;

/**
     * Supported plugins (lower case)
     *
     * @see self::initialize_static_variables()
     * @var array
     * @access private
     */
    private static $plugins = [];

/**
     * Invisible plugins
     *
     * @see self::initialize_static_variables()
     * @var array
     * @access private
     */
    private static $invisiblePlugins = [];

/**
     * Supported signature formats (lower case)
     *
     * @see self::initialize_static_variables()
     * @var array
     * @access private
     */
    private static $signatureFormats = [];

/**
     * Supported signature formats (original case)
     *
     * @see self::initialize_static_variables()
     * @var array
     * @access private
     */
    private static $signatureFileFormats = [];

/**
     * Available Engines
     *
     * @var boolean[]
     * @access private
     */
    protected static $engines = [];

/**
     * The constructor
     */
    protected function __construct()
    {
        self::initialize_static_variables();

$this->hash = new Hash('sha256');
        $this->hmac = new Hash('sha256');
    }

/**
     * Initialize static variables
     */
    protected static function initialize_static_variables()
    {
        if (!isset(self::$zero)) {
            self::$zero= new BigInteger(0);
            self::$one = new BigInteger(1);
        }

self::loadPlugins('Keys');
        if (static::ALGORITHM != 'RSA' && static::ALGORITHM != 'DH') {
            self::loadPlugins('Signature');
        }
    }

/**
     * Load the key
     *
     * @param string $key
     * @param string $password optional
     * @return AsymmetricKey
     */
    public static function load($key, $password = false)
    {
        self::initialize_static_variables();

$components = false;
        foreach (self::$plugins[static::ALGORITHM]['Keys'] as $format) {
            if (isset(self::$invisiblePlugins[static::ALGORITHM]) && in_array($format, self::$invisiblePlugins[static::ALGORITHM])) {
                continue;
            }
            try {
                $components = $format::load($key, $password);
            } catch (\Exception $e) {
                $components = false;
            }
            if ($components !== false) {
                break;
            }
        }

if ($components === false) {
            throw new NoKeyLoadedException('Unable to read key');
        }

$components['format'] = $format;
        $new = static::onLoad($components);
        $new->format = $format;
        return $new instanceof PrivateKey ?
            $new->withPassword($password) :
            $new;
    }

/**
     * Loads a private key
     *
     * @return PrivateKey
     * @access public
     * @param string|array $key
     * @param string $password optional
     */
    public function loadPrivateKey($key, $password = '')
    {
        $key = self::load($key, $password);
        if (!$key instanceof PrivateKey) {
            throw new NoKeyLoadedException('The key that was loaded was not a private key');
        }
        return $key;
    }

/**
     * Loads a public key
     *
     * @return PublicKey
     * @access public
     * @param string|array $key
     */
    public function loadPublicKey($key)
    {
        $key = self::load($key);
        if (!$key instanceof PublicKey) {
            throw new NoKeyLoadedException('The key that was loaded was not a public key');
        }
        return $key;
    }

/**
     * Loads parameters
     *
     * @return AsymmetricKey
     * @access public
     * @param string|array $key
     */
    public function loadParameters($key)
    {
        $key = self::load($key);
        if (!$key instanceof PrivateKey && !$key instanceof PublicKey) {
            throw new NoKeyLoadedException('The key that was loaded was not a parameter');
        }
        return $key;
    }

/**
     * Load the key, assuming a specific format
     *
     * @param string $type
     * @param string $key
     * @param string $password optional
     * @return AsymmetricKey
     */
    public static function loadFormat($type, $key, $password = false)
    {
        self::initialize_static_variables();

$components = false;
        $format = strtolower($type);
        if (isset(self::$plugins[static::ALGORITHM]['Keys'][$format])) {
            $format = self::$plugins[static::ALGORITHM]['Keys'][$format];
            $components = $format::load($key, $password);
        }

if ($components === false) {
            throw new NoKeyLoadedException('Unable to read key');
        }

$components['format'] = $format;

$new = static::onLoad($components);
        $new->format = $format;
        return $new instanceof PrivateKey ?
            $new->withPassword($password) :
            $new;
    }

/**
     * Loads a private key
     *
     * @return PrivateKey
     * @access public
     * @param string $type
     * @param string $key
     * @param string $password optional
     */
    public function loadPrivateKeyFormat($type, $key, $password = false)
    {
        $key = self::loadFormat($type, $key, $password);
        if (!$key instanceof PrivateKey) {
            throw new NoKeyLoadedException('The key that was loaded was not a private key');
        }
        return $key;
    }

/**
     * Loads a public key
     *
     * @return PublicKey
     * @access public
     * @param string $type
     * @param string $key
     */
    public function loadPublicKeyFormat($type, $key)
    {
        $key = self::loadFormat($type, $key);
        if (!$key instanceof PublicKey) {
            throw new NoKeyLoadedException('The key that was loaded was not a public key');
        }
        return $key;
    }

/**
     * Loads parameters
     *
     * @return AsymmetricKey
     * @access public
     * @param string $type
     * @param string|array $key
     */
    public function loadParametersFormat($type, $key)
    {
        $key = self::loadFormat($type, $key);
        if (!$key instanceof PrivateKey && !$key instanceof PublicKey) {
            throw new NoKeyLoadedException('The key that was loaded was not a parameter');
        }
        return $key;
    }

/**
     * Validate Plugin
     *
     * @access private
     * @param string $format
     * @param string $type
     * @param string $method optional
     * @return mixed
     */
    protected static function validatePlugin($format, $type, $method = NULL)
    {
        $type = strtolower($type);
        if (!isset(self::$plugins[static::ALGORITHM][$format][$type])) {
            throw new UnsupportedFormatException("$type is not a supported format");
        }
        $type = self::$plugins[static::ALGORITHM][$format][$type];
        if (isset($method) && !method_exists($type, $method)) {
            throw new UnsupportedFormatException("$type does not implement $method");
        }

return $type;
    }

/**
     * Load Plugins
     *
     * @access private
     * @param string $format
     */
    private static function loadPlugins($format)
    {
        if (!isset(self::$plugins[static::ALGORITHM][$format])) {
            self::$plugins[static::ALGORITHM][$format] = [];
            foreach (new \DirectoryIterator(__DIR__ . '/../' . static::ALGORITHM . '/Formats/' . $format . '/') as $file) {
                if ($file->getExtension() != 'php') {
                    continue;
                }
                $name = $file->getBasename('.php');
                $type = 'phpseclib3\Crypt\\' . static::ALGORITHM . '\\Formats\\' . $format . '\\' . $name;
                $reflect = new \ReflectionClass($type);
                if ($reflect->isTrait()) {
                    continue;
                }
                self::$plugins[static::ALGORITHM][$format][strtolower($name)] = $type;
                if ($reflect->hasConstant('IS_INVISIBLE')) {
                    self::$invisiblePlugins[static::ALGORITHM][] = $type;
                }
            }
        }
    }

/**
     * Returns a list of supported formats.
     *
     * @access public
     * @return array
     */
    public static function getSupportedKeyFormats()
    {
        self::initialize_static_variables();

return self::$plugins[static::ALGORITHM]['Keys'];
    }

/**
     * Add a fileformat plugin
     *
     * The plugin needs to either already be loaded or be auto-loadable.
     * Loading a plugin whose shortname overwrite an existing shortname will overwrite the old plugin.
     *
     * @see self::load()
     * @param string $fullname
     * @access public
     * @return bool
     */
    public static function addFileFormat($fullname)
    {
        self::initialize_static_variables();

if (class_exists($fullname)) {
            $meta = new \ReflectionClass($fullname);
            $shortname = $meta->getShortName();
            self::$plugins[static::ALGORITHM]['Keys'][strtolower($shortname)] = $fullname;
            if ($meta->hasConstant('IS_INVISIBLE')) {
                self::$invisiblePlugins[static::ALGORITHM] = strtolower($name);
            }
        }
    }

/**
     * Returns the format of the loaded key.
     *
     * If the key that was loaded wasn't in a valid or if the key was auto-generated
     * with RSA::createKey() then this will throw an exception.
     *
     * @see self::load()
     * @access public
     * @return mixed
     */
    public function getLoadedFormat()
    {
        if (empty($this->format)) {
            throw new NoKeyLoadedException('This key was created with createKey - it was not loaded with load. Therefore there is no "loaded format"');
        }

$meta = new \ReflectionClass($this->format);
        return $meta->getShortName();
    }

/**
     * Tests engine validity
     *
     * @access public
     */
    public static function useBestEngine()
    {
        static::$engines = [
            'PHP' => true,
            'OpenSSL' => extension_loaded('openssl'),
            // this test can be satisfied by either of the following:
            // http://php.net/manual/en/book.sodium.php
            // https://github.com/paragonie/sodium_compat
            'libsodium' => function_exists('sodium_crypto_sign_keypair')
        ];

return static::$engines;
    }

/**
     * Flag to use internal engine only (useful for unit testing)
     *
     * @access public
     */
    public static function useInternalEngine()
    {
        static::$engines = [
            'PHP' => true,
            'OpenSSL' => false,
            'libsodium' => false
        ];
    }

/**
     * __toString() magic method
     *
     * @return string
     */
    public function __toString()
    {
        return $this->toString('PKCS8');
    }

/**
     * Determines which hashing function should be used
     *
     * @access public
     * @param string $hash
     */
    public function withHash($hash)
    {
        $new = clone $this;

$new->hash = new Hash($hash);
        $new->hmac = new Hash($hash);

return $new;
    }

/**
     * Returns the hash algorithm currently being used
     *
     * @access public
     */
    public function getHash()
    {
       return clone $this->hash;
    }

/**
     * Compute the pseudorandom k for signature generation,
     * using the process specified for deterministic DSA.
     *
     * @access public
     * @param string $h1
     * @return string
     */
    protected function computek($h1)
    {
        $v = str_repeat("\1", strlen($h1));

$k = str_repeat("\0", strlen($h1));

$x = $this->int2octets($this->x);
        $h1 = $this->bits2octets($h1);

$this->hmac->setKey($k);
        $k = $this->hmac->hash($v . "\0" . $x . $h1);
        $this->hmac->setKey($k);
        $v = $this->hmac->hash($v);
        $k = $this->hmac->hash($v . "\1" . $x . $h1);
        $this->hmac->setKey($k);
        $v = $this->hmac->hash($v);

$qlen = $this->q->getLengthInBytes();

while (true) {
            $t = '';
            while (strlen($t) < $qlen) {
                $v = $this->hmac->hash($v);
                $t = $t . $v;
            }
            $k = $this->bits2int($t);

if (!$k->equals(self::$zero) && $k->compare($this->q) < 0) {
                break;
            }
            $k = $this->hmac->hash($v . "\0");
            $this->hmac->setKey($k);
            $v = $this->hmac->hash($v);
        }

return $k;
    }

/**
     * Integer to Octet String
     *
     * @access private
     * @param \phpseclib3\Math\BigInteger $v
     * @return string
     */
    private function int2octets($v)
    {
        $out = $v->toBytes();
        $rolen = $this->q->getLengthInBytes();
        if (strlen($out) < $rolen) {
            return str_pad($out, $rolen, "\0", STR_PAD_LEFT);
        } else if (strlen($out) > $rolen) {
            return substr($out, -$rolen);
        } else {
            return $out;
        }
    }

/**
     * Bit String to Integer
     *
     * @access private
     * @param string $in
     * @return \phpseclib3\Math\BigInteger
     */
    protected function bits2int($in)
    {
        $v = new BigInteger($in, 256);
        $vlen = strlen($in) << 3;
        $qlen = $this->q->getLength();
        if ($vlen > $qlen) {
            return $v->bitwise_rightShift($vlen - $qlen);
        }
        return $v;
    }

/**
     * Bit String to Octet String
     *
     * @access private
     * @param string $in
     * @return string
     */
    private function bits2octets($in)
    {
        $z1 = $this->bits2int($in);
        $z2 = $z1->subtract($this->q);
        return $z2->compare(self::$zero) < 0 ?
            $this->int2octets($z1) :
            $this->int2octets($z2);
    }
}

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