diff --git a/phpseclib/System/SSH/Agent/Identity.php b/phpseclib/System/SSH/Agent/Identity.php
deleted file mode 100644
index 95e091db..00000000
--- a/phpseclib/System/SSH/Agent/Identity.php
+++ /dev/null
@@ -1,170 +0,0 @@
-<?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 retrieve 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);
-    }
-}