mall/librarys/phpexcel/PHPExcel/Shared/PasswordHasher.php

<?php
/**
 * 重庆赤晓店信息科技有限公司
 * https://www.chixiaodian.com
 * Copyright (c) 2023 赤店商城 All rights reserved.
 */


/**
 * PHPExcel_Shared_PasswordHasher
 *
 * @category   PHPExcel
 * @package    PHPExcel_Shared
 * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Shared_PasswordHasher
{
    /**
     * Create a password hash from a given string.
     *
     * This method is based on the algorithm provided by
     * Daniel Rentz of OpenOffice and the PEAR package
     * Spreadsheet_Excel_Writer by Xavier Noguer <xnoguer@rezebra.com>.
     *
     * @param     string    $pPassword    Password to hash
     * @return     string                Hashed password
     */
    public static function hashPassword($pPassword = '')
    {
        $password   = 0x0000;
        $charPos    = 1;       // char position

        // split the plain text password in its component characters
        $chars = preg_split('//', $pPassword, -1, PREG_SPLIT_NO_EMPTY);
        foreach ($chars as $char) {
            $value            = ord($char) << $charPos++;    // shifted ASCII value
            $rotated_bits    = $value >> 15;                // rotated bits beyond bit 15
            $value            &= 0x7fff;                    // first 15 bits
            $password        ^= ($value | $rotated_bits);
        }

        $password ^= strlen($pPassword);
        $password ^= 0xCE4B;

        return(strtoupper(dechex($password)));
    }
}