^^&&^^

Edit File: RSASSA_PSS_params.php

<?php

/**
 * RSASSA_PSS_params
 *
 * As defined in https://tools.ietf.org/html/rfc4055#section-3.1
 *
 * PHP version 5
 *
 * @category  File
 * @package   ASN1
 * @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\File\ASN1\Maps;

use phpseclib3\File\ASN1;

/**
 * RSASSA_PSS_params
 *
 * @package ASN1
 * @author  Jim Wigginton <terrafrost@php.net>
 * @access  public
 */
abstract class RSASSA_PSS_params
{
    const MAP = [
        'type'     => ASN1::TYPE_SEQUENCE,
        'children' => [
            'hashAlgorithm'    => [
                'constant' => 0,
                'optional' => true,
                'explicit' => true,
                //'default'  => 'sha1Identifier'
            ] + HashAlgorithm::MAP,
            'maskGenAlgorithm' => [
                'constant' => 1,
                'optional' => true,
                'explicit' => true,
                //'default'  => 'mgf1SHA1Identifier'
            ] + MaskGenAlgorithm::MAP,
            'saltLength'       => [
                'type'     => ASN1::TYPE_INTEGER,
                'constant' => 2,
                'optional' => true,
                'explicit' => true,
                'default'  => 20
            ],
            'trailerField'     => [
                'type'     => ASN1::TYPE_INTEGER,
                'constant' => 3,
                'optional' => true,
                'explicit' => true,
                'default'  => 1
            ]
        ]
    ];
}