src/Biz/Util/Phpsec/System/SSH/Agent.php

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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 \Biz\Util\Phpsec\System\SSH\Agent();
 *
 *    $ssh = new \Biz\Util\Phpsec\Net\SSH2('www.domain.tld');
 *    if (!$ssh->login('username', $agent)) {
 *        exit('Login Failed');
 *    }
 *
 *    echo $ssh->exec('pwd');
 *    echo $ssh->exec('ls -la');
 * ?>
 * </code>
 *
 * @category  System
 *
 * @internal  See http://api.libssh.org/rfc/PROTOCOL.agent
 *
 * @author    Jim Wigginton <terrafrost@php.net>
 * @copyright 2014 Jim Wigginton
 * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
 *
 * @see      http://phpseclib.sourceforge.net
 */

namespace Biz\Util\Phpsec\System\SSH;

use Biz\Util\Phpsec\Crypt\RSA;
use Biz\Util\Phpsec\System\SSH\Agent\Identity;

/**
 * Pure-PHP ssh-agent client identity factory.
 *
 * requestIdentities() method pumps out \Biz\Util\Phpsec\System\SSH\Agent\Identity objects
 *
 *
 * @author  Jim Wigginton <terrafrost@php.net>
 */
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)