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.

Detailed Description

Definition at line 36 of file PasswordHasher.php.

Member Function Documentation

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;
        $i        = 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) << $i;   // shifted ASCII value
            $rotated_bits = $value >> 15;       // rotated bits beyond bit 15
            $value       &= 0x7fff;             // first 15 bits
            $password    ^= ($value | $rotated_bits);
            ++$i;
        }

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

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

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

• Services/Excel/classes/PHPExcel/Shared/PasswordHasher.php