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Des.php
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Des.php
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<?php
class DES
{
protected static $IP = array(
58, 50, 42, 34, 26, 18, 10, 2,
60, 52, 44, 36, 28, 20, 12, 4,
62, 54, 46, 38, 30, 22, 14, 6,
64, 56, 48, 40, 32, 24, 16, 8,
57, 49, 41, 33, 25, 17, 9, 1,
59, 51, 43, 35, 27, 19, 11, 3,
61, 53, 45, 37, 29, 21, 13, 5,
63, 55, 47, 39, 31, 23, 15, 7
);
protected static $IPinv = array(
40, 8, 48, 16, 56, 24, 64, 32,
39, 7, 47, 15, 55, 23, 63, 31,
38, 6, 46, 14, 54, 22, 62, 30,
37, 5, 45, 13, 53, 21, 61, 29,
36, 4, 44, 12, 52, 20, 60, 28,
35, 3, 43, 11, 51, 19, 59, 27,
34, 2, 42, 10, 50, 18, 58, 26,
33, 1, 41, 9, 49, 17, 57, 25
);
protected static $E = array(
32, 1, 2, 3, 4, 5,
4, 5, 6, 7, 8, 9,
8, 9, 10, 11, 12, 13,
12, 13, 14, 15, 16, 17,
16, 17, 18, 19, 20, 21,
20, 21, 22, 23, 24, 25,
24, 25, 26, 27, 28, 29,
28, 29, 30, 31, 32, 1
);
protected static $S1 = array(
14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7,
0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8,
4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0,
15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13
);
protected static $S2 = array(
15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10,
3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5,
0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15,
13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9
);
protected static $S3 = array(
10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8,
13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1,
13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7,
1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12
);
protected static $S4 = array(
7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15,
13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9,
10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4,
3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14
);
protected static $S5 = array(
2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9,
14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6,
4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14,
11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3
);
protected static $S6 = array(
12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11,
10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8,
9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6,
4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13
);
protected static $S7 = array(
4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1,
13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6,
1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2,
6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12
);
protected static $S8 = array(
13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7,
1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2,
7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8,
2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11
);
protected static $PP = array(
16, 7, 20, 21,
29, 12, 28, 17,
1, 15, 23, 26,
5, 18, 31, 10,
2, 8, 24, 14,
32, 27, 3, 9,
19, 13, 30, 6,
22, 11, 4, 25
);
protected static $PC1 = array(
57, 49, 41, 33, 25, 17, 9,
1, 58, 50, 42, 34, 26, 18,
10, 2, 59, 51, 43, 35, 27,
19, 11, 3, 60, 52, 44, 36,
63, 55, 47, 39, 31, 23, 15,
7, 62, 54, 46, 38, 30, 22,
14, 6, 61, 53, 45, 37, 29,
21, 13, 5, 28, 20, 12, 4
);
protected static $PC2 = array(
14, 17, 11, 24, 1, 5,
3, 28, 15, 6, 21, 10,
23, 19, 12, 4, 26, 8,
16, 7, 27, 20, 13, 2,
41, 52, 31, 37, 47, 55,
30, 40, 51, 45, 33, 48,
44, 49, 39, 56, 34, 53,
46, 42, 50, 36, 29, 32
);
protected static $LLS = array(0, 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1);
protected static $Ki = array();
protected static function Init_bit_tab(&$dest, $source, $n, $offset)
{
for ($i = 0; $i < $n; $i++) {
$masque = 0x80;
for ($j = 0; $j < 8; $j++) {
$dest[8 * $i + $j + $offset] = (($source[$i] & $masque) >> (7 - $j));
$masque >>= 1;
}
}
}
/****************************************************************************
Bin_to_Hex() :
range la valeur hexa sur 8 octets d'un nombre binaire de 64 bits
*****************************************************************************/
protected static function Bin_to_Hex(&$vect, $source, $offset)
{
//memset(vect,0,8);
$vect = array(0, 0, 0, 0, 0, 0, 0, 0);
for ($i = 0; $i < 8; $i++) {
$masque = 7;
for ($j = 0; $j < 8; $j++) {
$vect[$i] += (self::puissance($masque)) * $source[$i * 8 + $j + $offset];
--$masque;
}
}
}
protected static function puissance($puissance)
{
$res = 1;
for ($i = 1; $i <= $puissance; $i++) {
$res *= 2;
}
return ($res);
}
protected static function Vect_Permutation(&$vect, $n_vect, $regle, $n_regle, $offset)
{
$buff = array();
for ($i = 0; $i < $n_vect; $i++) {
$buff[$i] = $vect[$i + $offset];
}
for ($i = 0; $i < $n_regle; $i++) {
$vect[$i + $offset] = $buff[$regle[$i] - 1];
}
}
protected static function S_Box_Calc(&$vect, $offset)
{
$S_Box = array(self::$S1, self::$S2, self::$S3, self::$S4, self::$S5, self::$S6, self::$S7, self::$S8);
for ($i = 0; $i < 8; $i++) {
$col = (8 * $vect[1 + 6 * $i + $offset] + 4 * $vect[2 + 6 * $i + $offset] + 2 * $vect[3 + 6 * $i + $offset] + $vect[4 + 6 * $i + $offset]);
$lig = (2 * $vect[6 * $i + $offset] + $vect[5 + 6 * $i + $offset]);
self::Init_4bit_tab($vect, $S_Box[$i][$col + $lig * 16], (4 * $i + $offset));
}
}
protected static function Init_4bit_tab(&$dest, $source, $offset)
{
$masque = 0x08;
for ($i = 0; $i < 4; $i++) {
$dest[$i + $offset] = (($source & $masque) >> (3 - $i));
$masque >>= 1;
}
}
protected static function _Xor(&$vect1, $vect2, $num_byte, $offset_vect1, $offset_vect2)
{
for ($i = 0; $i < $num_byte; $i++) {
$vect1[$i + $offset_vect1] ^= $vect2[$i + $offset_vect2];
}
}
protected static function Left_shifts(&$vect, $n, $offset)
{
for ($i = 0; $i < $n; $i++) {
$tmp_vect0 = $vect[0 + $offset];
$tmp_vect28 = $vect[28 + $offset];
for ($j = 0; $j < 27; $j++) {
$vect[$j + $offset] = $vect[$j + 1 + $offset];
$vect[$j + 28 + $offset] = $vect[$j + 29 + $offset];
}
$vect[27 + $offset] = $tmp_vect0;
$vect[55 + $offset] = $tmp_vect28;
}
}
protected static function Calcul_sous_cles($DESKEY)
{
self::Init_bit_tab($Kb, $DESKEY, 8, 1);
self::Vect_Permutation($Kb, 64, self::$PC1, 56, 1);
for ($i = 1; $i <= 16; $i++) {
self::Left_shifts($Kb, self::$LLS[$i], 1);
for ($j = 1; $j < 57; $j++) {
$inter_key[$j] = $Kb[$j];
}
self::Vect_Permutation($inter_key, 56, self::$PC2, 48, 1);
for ($k = 1; $k < 49; $k++) {
self::$Ki[$i][$k] = $inter_key[$k];
}
}
}
public static function function_des($cryp_decrypt, $DES_DATA, $DESKEY, &$DES_RESULT = array())
{
$right32_bit = array();
self::Init_bit_tab($Data_B, $DES_DATA, 8, 1);
self::Vect_Permutation($Data_B, 64, self::$IP, 64, 1);
self::Calcul_sous_cles($DESKEY);
/* * ***************** boucle principale de 15 iterations */
for ($i = 1; $i <= 15; $i++) {
for ($j = 0; $j < 32; $j++) {
$right32_bit[$j] = $Data_B[33 + $j];
}
self::Vect_Permutation($Data_B, 32, self::$E, 48, 33);
switch ($cryp_decrypt) {
case 0:
self::_Xor($Data_B, self::$Ki[$i], 48, 33, 1);
break;
case 1:
self::_Xor($Data_B, self::$Ki[17 - $i], 48, 33, 1);
break;
}
self::S_Box_Calc($Data_B, 33);
self::Vect_Permutation($Data_B, 32, self::$PP, 32, 33);
self::_Xor($Data_B, $Data_B, 32, 33, 1);
for ($k = 0; $k < 32; $k++) {
$Data_B[$k + 1] = $right32_bit[$k];
}
}
/* * ****************************** 16 iteration **** */
for ($l = 0; $l < 32; $l++) {
$right32_bit[$l] = $Data_B[33 + $l];
}
self::Vect_Permutation($Data_B, 32, self::$E, 48, 33);
if ($cryp_decrypt == 0) {
self::_Xor($Data_B, self::$Ki[16], 48, 33, 1);
} else {
self::_Xor($Data_B, self::$Ki[1], 48, 33, 1);
}
self::S_Box_Calc($Data_B, 33);
self::Vect_Permutation($Data_B, 32, self::$PP, 32, 33);
self::_Xor($Data_B, $Data_B, 32, 1, 33);
for ($j = 0; $j < 32; $j++) {
$Data_B[33 + $j] = $right32_bit[$j];
}
self::Vect_Permutation($Data_B, 64, self::$IPinv, 64, 1);
self::Bin_to_Hex($DES_RESULT, $Data_B, 1);
}
}
$DESKey = "abcdefgh";
$Data = "01234567890";
$Res = array();
DES::function_des(0, $Data, $DESKey, $Res);
$des2 = mcrypt_encrypt(MCRYPT_DES, $DESKey, $Data, MCRYPT_MODE_ECB);
$ascii = array();
for ($i = 0; $i < strlen($des2); $i++) {
$ascii[] = ord($des2[$i]);
}
var_dump($Res, $ascii);