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827 daniel-mar 1 
<?php
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/**
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 * PBKDF2params
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 *
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 * PHP version 5
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 *
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 * @author    Jim Wigginton <terrafrost@php.net>
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 * @copyright 2016 Jim Wigginton
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 * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
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 * @link      http://phpseclib.sourceforge.net
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 */
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namespace phpseclib3\File\ASN1\Maps;
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use phpseclib3\File\ASN1;
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/**
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 * PBKDF2params
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 *
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 * from https://tools.ietf.org/html/rfc2898#appendix-A.3
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 *
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 * @author  Jim Wigginton <terrafrost@php.net>
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 */
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abstract class PBKDF2params
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{
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    const MAP = [
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        'type' => ASN1::TYPE_SEQUENCE,
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        'children' => [
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            // technically, this is a CHOICE in RFC2898 but the other "choice" is, currently, more of a placeholder
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            // in the RFC
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            'salt' => ['type' => ASN1::TYPE_OCTET_STRING],
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            'iterationCount' => ['type' => ASN1::TYPE_INTEGER],
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            'keyLength' => [
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                'type' => ASN1::TYPE_INTEGER,
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                'optional' => true
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            ],
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            'prf' => AlgorithmIdentifier::MAP + ['optional' => true]
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        ]
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    ];
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}