PHPExcel_Shared_PasswordHasher Class Reference

Collaboration diagram for PHPExcel_Shared_PasswordHasher:

Static Public Member Functions
static	hashPassword ($pPassword='')
	Create a password hash from a given string. More...

Detailed Description

Definition at line 36 of file PasswordHasher.php.

Member Function Documentation

hashPassword()

static PHPExcel_Shared_PasswordHasher::hashPassword (   $pPassword = '' )

static

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 xnogu.nosp@m.er@r.nosp@m.ezebr.nosp@m.a.co.nosp@m.m.

Parameters

string

$pPassword

Password to hash

Returns

string Hashed password

Definition at line 48 of file PasswordHasher.php.

References $password.

Referenced by PHPExcel_Worksheet\protectCells(), PHPExcel_Worksheet_Protection\setPassword(), PHPExcel_DocumentSecurity\setRevisionsPassword(), and PHPExcel_DocumentSecurity\setWorkbookPassword().

                                                             {
        $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)));
        }

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The documentation for this class was generated from the following file:

• libs/composer/vendor/phpoffice/phpexcel/Classes/PHPExcel/Shared/PasswordHasher.php