PHPExcel_Reader_Excel5_MD5 Class Reference

Collaboration diagram for PHPExcel_Reader_Excel5_MD5:

Public Member Functions
	__construct ()
	MD5 stream constructor. More...
	reset ()
	Reset the MD5 stream context. More...
	getContext ()
	Get MD5 stream context. More...
	add ($data)
	Add data to context. More...

Static Private Member Functions
static	F ($X, $Y, $Z)
static	G ($X, $Y, $Z)
static	H ($X, $Y, $Z)
static	I ($X, $Y, $Z)
static	step ($func, &$A, $B, $C, $D, $M, $s, $t)
static	rotate ($decimal, $bits)

Private Attributes
	$a
	$b
	$c
	$d

Detailed Description

Definition at line 36 of file MD5.php.

Constructor & Destructor Documentation

__construct()

PHPExcel_Reader_Excel5_MD5::__construct

(

)

MD5 stream constructor.

Definition at line 48 of file MD5.php.

    {
        $this->reset();
    }

References reset().

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Member Function Documentation

add()

PHPExcel_Reader_Excel5_MD5::add

(

$data

)

Add data to context.

Parameters

string

$data

Data to add

Definition at line 91 of file MD5.php.

    {
        $words = array_values(unpack('V16', $data));
 
        $A = $this->a;
        $B = $this->b;
        $C = $this->c;
        $D = $this->d;
 
        $F = array('PHPExcel_Reader_Excel5_MD5','F');
        $G = array('PHPExcel_Reader_Excel5_MD5','G');
        $H = array('PHPExcel_Reader_Excel5_MD5','H');
        $I = array('PHPExcel_Reader_Excel5_MD5','I');
 
        /* ROUND 1 */
        self::step($F, $A, $B, $C, $D, $words[0], 7, 0xd76aa478);
        self::step($F, $D, $A, $B, $C, $words[1], 12, 0xe8c7b756);
        self::step($F, $C, $D, $A, $B, $words[2], 17, 0x242070db);
        self::step($F, $B, $C, $D, $A, $words[3], 22, 0xc1bdceee);
        self::step($F, $A, $B, $C, $D, $words[4], 7, 0xf57c0faf);
        self::step($F, $D, $A, $B, $C, $words[5], 12, 0x4787c62a);
        self::step($F, $C, $D, $A, $B, $words[6], 17, 0xa8304613);
        self::step($F, $B, $C, $D, $A, $words[7], 22, 0xfd469501);
        self::step($F, $A, $B, $C, $D, $words[8], 7, 0x698098d8);
        self::step($F, $D, $A, $B, $C, $words[9], 12, 0x8b44f7af);
        self::step($F, $C, $D, $A, $B, $words[10], 17, 0xffff5bb1);
        self::step($F, $B, $C, $D, $A, $words[11], 22, 0x895cd7be);
        self::step($F, $A, $B, $C, $D, $words[12], 7, 0x6b901122);
        self::step($F, $D, $A, $B, $C, $words[13], 12, 0xfd987193);
        self::step($F, $C, $D, $A, $B, $words[14], 17, 0xa679438e);
        self::step($F, $B, $C, $D, $A, $words[15], 22, 0x49b40821);
 
        /* ROUND 2 */
        self::step($G, $A, $B, $C, $D, $words[1], 5, 0xf61e2562);
        self::step($G, $D, $A, $B, $C, $words[6], 9, 0xc040b340);
        self::step($G, $C, $D, $A, $B, $words[11], 14, 0x265e5a51);
        self::step($G, $B, $C, $D, $A, $words[0], 20, 0xe9b6c7aa);
        self::step($G, $A, $B, $C, $D, $words[5], 5, 0xd62f105d);
        self::step($G, $D, $A, $B, $C, $words[10], 9, 0x02441453);
        self::step($G, $C, $D, $A, $B, $words[15], 14, 0xd8a1e681);
        self::step($G, $B, $C, $D, $A, $words[4], 20, 0xe7d3fbc8);
        self::step($G, $A, $B, $C, $D, $words[9], 5, 0x21e1cde6);
        self::step($G, $D, $A, $B, $C, $words[14], 9, 0xc33707d6);
        self::step($G, $C, $D, $A, $B, $words[3], 14, 0xf4d50d87);
        self::step($G, $B, $C, $D, $A, $words[8], 20, 0x455a14ed);
        self::step($G, $A, $B, $C, $D, $words[13], 5, 0xa9e3e905);
        self::step($G, $D, $A, $B, $C, $words[2], 9, 0xfcefa3f8);
        self::step($G, $C, $D, $A, $B, $words[7], 14, 0x676f02d9);
        self::step($G, $B, $C, $D, $A, $words[12], 20, 0x8d2a4c8a);
 
        /* ROUND 3 */
        self::step($H, $A, $B, $C, $D, $words[5], 4, 0xfffa3942);
        self::step($H, $D, $A, $B, $C, $words[8], 11, 0x8771f681);
        self::step($H, $C, $D, $A, $B, $words[11], 16, 0x6d9d6122);
        self::step($H, $B, $C, $D, $A, $words[14], 23, 0xfde5380c);
        self::step($H, $A, $B, $C, $D, $words[1], 4, 0xa4beea44);
        self::step($H, $D, $A, $B, $C, $words[4], 11, 0x4bdecfa9);
        self::step($H, $C, $D, $A, $B, $words[7], 16, 0xf6bb4b60);
        self::step($H, $B, $C, $D, $A, $words[10], 23, 0xbebfbc70);
        self::step($H, $A, $B, $C, $D, $words[13], 4, 0x289b7ec6);
        self::step($H, $D, $A, $B, $C, $words[0], 11, 0xeaa127fa);
        self::step($H, $C, $D, $A, $B, $words[3], 16, 0xd4ef3085);
        self::step($H, $B, $C, $D, $A, $words[6], 23, 0x04881d05);
        self::step($H, $A, $B, $C, $D, $words[9], 4, 0xd9d4d039);
        self::step($H, $D, $A, $B, $C, $words[12], 11, 0xe6db99e5);
        self::step($H, $C, $D, $A, $B, $words[15], 16, 0x1fa27cf8);
        self::step($H, $B, $C, $D, $A, $words[2], 23, 0xc4ac5665);
 
        /* ROUND 4 */
        self::step($I, $A, $B, $C, $D, $words[0], 6, 0xf4292244);
        self::step($I, $D, $A, $B, $C, $words[7], 10, 0x432aff97);
        self::step($I, $C, $D, $A, $B, $words[14], 15, 0xab9423a7);
        self::step($I, $B, $C, $D, $A, $words[5], 21, 0xfc93a039);
        self::step($I, $A, $B, $C, $D, $words[12], 6, 0x655b59c3);
        self::step($I, $D, $A, $B, $C, $words[3], 10, 0x8f0ccc92);
        self::step($I, $C, $D, $A, $B, $words[10], 15, 0xffeff47d);
        self::step($I, $B, $C, $D, $A, $words[1], 21, 0x85845dd1);
        self::step($I, $A, $B, $C, $D, $words[8], 6, 0x6fa87e4f);
        self::step($I, $D, $A, $B, $C, $words[15], 10, 0xfe2ce6e0);
        self::step($I, $C, $D, $A, $B, $words[6], 15, 0xa3014314);
        self::step($I, $B, $C, $D, $A, $words[13], 21, 0x4e0811a1);
        self::step($I, $A, $B, $C, $D, $words[4], 6, 0xf7537e82);
        self::step($I, $D, $A, $B, $C, $words[11], 10, 0xbd3af235);
        self::step($I, $C, $D, $A, $B, $words[2], 15, 0x2ad7d2bb);
        self::step($I, $B, $C, $D, $A, $words[9], 21, 0xeb86d391);
 
        $this->a = ($this->a + $A) & 0xffffffff;
        $this->b = ($this->b + $B) & 0xffffffff;
        $this->c = ($this->c + $C) & 0xffffffff;
        $this->d = ($this->d + $D) & 0xffffffff;
    }

References $a, $b, $c, $d, $data, $G, and step().

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F()

static PHPExcel_Reader_Excel5_MD5::F (   $X,   $Y,   $Z  )

staticprivate

Definition at line 184 of file MD5.php.

    {
        return (($X & $Y) | ((~ $X) & $Z)); // X AND Y OR NOT X AND Z
    }

G()

static PHPExcel_Reader_Excel5_MD5::G (   $X,   $Y,   $Z  )

staticprivate

Definition at line 190 of file MD5.php.

    {
        return (($X & $Z) | ($Y & (~ $Z))); // X AND Z OR Y AND NOT Z
    }

getContext()

PHPExcel_Reader_Excel5_MD5::getContext

(

)

Get MD5 stream context.

Returns

string

Definition at line 71 of file MD5.php.

    {
        $s = '';
        foreach (array('a', 'b', 'c', 'd') as $i) {
            $v = $this->{$i};
            $s .= chr($v & 0xff);
            $s .= chr(($v >> 8) & 0xff);
            $s .= chr(($v >> 16) & 0xff);
            $s .= chr(($v >> 24) & 0xff);
        }
 
        return $s;
    }

H()

static PHPExcel_Reader_Excel5_MD5::H (   $X,   $Y,   $Z  )

staticprivate

Definition at line 196 of file MD5.php.

    {
        return ($X ^ $Y ^ $Z); // X XOR Y XOR Z
    }

I()

static PHPExcel_Reader_Excel5_MD5::I (   $X,   $Y,   $Z  )

staticprivate

Definition at line 202 of file MD5.php.

    {
        return ($Y ^ ($X | (~ $Z))) ; // Y XOR (X OR NOT Z)
    }

reset()

PHPExcel_Reader_Excel5_MD5::reset

(

)

Reset the MD5 stream context.

Definition at line 57 of file MD5.php.

    {
        $this->a = 0x67452301;
        $this->b = 0xEFCDAB89;
        $this->c = 0x98BADCFE;
        $this->d = 0x10325476;
    }

Referenced by __construct().

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rotate()

static PHPExcel_Reader_Excel5_MD5::rotate (   $decimal,   $bits  )

staticprivate

Definition at line 216 of file MD5.php.

    {
        $binary = str_pad(decbin($decimal), 32, "0", STR_PAD_LEFT);
        return bindec(substr($binary, $bits).substr($binary, 0, $bits));
    }

Referenced by step().

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step()

static PHPExcel_Reader_Excel5_MD5::step (   $func, &  $A,   $B,   $C,   $D,   $M,   $s,   $t  )

staticprivate

Definition at line 208 of file MD5.php.

    {
        $A = ($A + call_user_func($func, $B, $C, $D) + $M + $t) & 0xffffffff;
        $A = self::rotate($A, $s);
        $A = ($B + $A) & 0xffffffff;
    }

References $t, and rotate().

Referenced by add().

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Field Documentation

$a

PHPExcel_Reader_Excel5_MD5::$a

private

Definition at line 39 of file MD5.php.

Referenced by add().

$b

PHPExcel_Reader_Excel5_MD5::$b

private

Definition at line 40 of file MD5.php.

Referenced by add().

$c

PHPExcel_Reader_Excel5_MD5::$c

private

Definition at line 41 of file MD5.php.

Referenced by add().

$d

PHPExcel_Reader_Excel5_MD5::$d

private

Definition at line 42 of file MD5.php.

Referenced by add().

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

• libs/composer/vendor/phpoffice/phpexcel/Classes/PHPExcel/Reader/Excel5/MD5.php