Ralf
Reputation: 309
PHP - I need to call 2 php functions via url parameter - but how?
I have to call an old PHP function with PC1 encryption and unfortunately I have no instructions or example, only the PHP file - and no PHP know how :( :(
Can someone help me how to call the encrypt and decrypt function via URL-parameter? I only need to show/print the encrypted or decrypted result.
This is the old found code:
<?
//class to encrypt and decrypt according to the "PC1" algorithm
// I. Verburgh 2007
class PC1 {
var $pkax;
var $pkbx;
var $pkcx;
var $pkdx;
var $pksi;
var $pktmp;
var $x1a2;
var $pkres;
var $pki;
var $inter;
var $cfc;
var $cfd;
var $compte;
var $x1a0;
var $cle;
var $pkc;
var $plainlen;
var $ascipherlen;
var $plainText;
var $ascCipherText;
function PC1() {
}
function pkfin() {
for ($j=0;$j<16;$j++) {
$this->cle[$j] = "";
}
for ($j=0;$j<8;$j++) {
$this->x1a0[$j] = 0;
}
$this->pkax = 0;
$this->pkbx = 0;
$this->pkcx = 0;
$this->pkdx = 0;
$this->pksi = 0;
$this->pktmp = 0;
$this->x1a2 = 0;
$this->pkres = 0;
$this->pki = 0;
$this->inter = 0;
$this->cfc = 0;
$this->cfd = 0;
$this->compte = 0;
$this->pkc = 0;
}
function pkcode() {
$this->pkdx = $this->x1a2 + $this->pki;
$this->pkax = $this->x1a0[$this->pki];
$this->pkcx = 0x015a;
$this->pkbx = 0x4e35;
$this->pktmp = $this->pkax;
$this->pkax = $this->pksi;
$this->pksi = $this->pktmp;
$this->pktmp = $this->pkax;
$this->pkax = $this->pkdx;
$this->pkdx = $this->pktmp;
if ($this->pkax != 0) {
$this->pkax = $this->wordmultiply($this->pkax, $this->pkbx);
}
$this->pktmp = $this->pkax;
$this->pkax = $this->pkcx;
$this->pkcx = $this->pktmp;
if ($this->pkax != 0) {
$this->pkax = $this->wordmultiply($this->pkax, $this->pksi);
$this->pkcx = $this->wordsum($this->pkax, $this->pkcx);
}
$this->pktmp = $this->pkax;
$this->pkax = $this->pksi;
$this->pksi = $this->pktmp;
$this->pkax = $this->wordmultiply($this->pkax, $this->pkbx);
$this->pkdx = $this->wordsum($this->pkcx, $this->pkdx);
$this->pkax = $this->wordsum($this->pkax, 1);
$this->x1a2 = $this->pkdx;
$this->x1a0[$this->pki] = $this->pkax;
$this->pkres = $this->wordxor($this->pkax, $this->pkdx);
$this->pki++;
}
function wordmultiply($value1, $value2) {
if (is_numeric($value1) && is_numeric($value2))
$product = (($value1 * $value2) % 65536);
else {
$product = 0;
echo "error with wordmulitply<br />";
}
return $product;
}
function wordsum($value1, $value2) {
$sum = (($value1 + $value2) % 65536);
return $sum;
}
function wordminus($value1, $value2) {
$minus = (($value1 - $value2) % 65536);
return $minus;
}
function wordxor($value1, $value2) {
$outcome = (($value1 ^ $value2) % 65536);
return $outcome;
}
function pkassemble() {
$this->x1a0[0] = $this->wordsum($this->wordmultiply(ord($this->cle[0]), 256), ord($this->cle[1]));
$this->pkcode();
$this->inter = $this->pkres;
$this->x1a0[1] = $this->wordxor($this->x1a0[0], $this->wordsum($this->wordmultiply(ord($this->cle[2]), 256), ord($this->cle[3])));
$this->pkcode();
$this->inter = $this->wordxor($this->inter, $this->pkres);
$this->x1a0[2] = $this->wordxor($this->x1a0[1], $this->wordsum($this->wordmultiply(ord($this->cle[4]), 256), ord($this->cle[5])));
$this->pkcode();
$this->inter = $this->wordxor($this->inter, $this->pkres);
$this->x1a0[3] = $this->wordxor($this->x1a0[2], $this->wordsum($this->wordmultiply(ord($this->cle[6]), 256), ord($this->cle[7])));
$this->pkcode();
$this->inter = $this->wordxor($this->inter, $this->pkres);
$this->x1a0[4] = $this->wordxor($this->x1a0[3], $this->wordsum($this->wordmultiply(ord($this->cle[8]), 256), ord($this->cle[9])));
$this->pkcode();
$this->inter = $this->wordxor($this->inter, $this->pkres);
$this->x1a0[5] = $this->wordxor($this->x1a0[4], $this->wordsum($this->wordmultiply(ord($this->cle[10]), 256), ord($this->cle[11])));
$this->pkcode();
$this->inter = $this->wordxor($this->inter, $this->pkres);
$this->x1a0[6] = $this->wordxor($this->x1a0[5], $this->wordsum($this->wordmultiply(ord($this->cle[12]), 256), ord($this->cle[13])));
$this->pkcode();
$this->inter = $this->wordxor($this->inter, $this->pkres);
$this->x1a0[7] = $this->wordxor($this->x1a0[6], $this->wordsum($this->wordmultiply(ord($this->cle[14]), 256), ord($this->cle[15])));
$this->pkcode();
$this->inter = $this->wordxor($this->inter, $this->pkres);
$this->pki=0;
}
function encrypt($in, $key) {
$this->pkfin();
$this->k = 0;
$this->plainlen = strlen($in);
for ($count=0;$count<16;$count++) {
if (isset($key[$count]))
$this->cle[$count] = $key[$count];
}
for ($count=0;$count<$this->plainlen;$count++) {
$this->pkc = ord($in[$count]);
$this->pkassemble();
$this->cfc = $this->inter >> 8;
$this->cfd = $this->inter & 255;
for ($this->compte=0;$this->compte<sizeof($this->cle);$this->compte++) {
$this->cle[$this->compte] = chr($this->wordxor(ord($this->cle[$this->compte]), $this->pkc));
}
$this->pkc = $this->wordxor($this->pkc, ($this->wordxor($this->cfc, $this->cfd)));
$this->pkd = ($this->pkc >> 4);
$this->pke = ($this->pkc & 15);
$this->ascCipherText[$this->k] = $this->wordsum(0x61, $this->pkd);
$this->k++;
$this->ascCipherText[$this->k] = $this->wordsum(0x61, $this->pke);
$this->k++;
}
$this->ascCipherText = array_map("chr", $this->ascCipherText);
return implode("", $this->ascCipherText);
}
function decrypt($in, $key) {
$this->pkfin();
$return = "";
for ($count=0;$count<16;$count++) {
if (isset($key[$count]))
$this->cle[$count] = $key[$count];
else
$this->cle[$count] = "";
}
$this->pksi = 0;
$this->x1a2 = 0;
$d = 0;
$e = 0;
$i = 0;
$j = 0;
$l = 0;
$len = strlen($in);
while ($j < $len) {
$rep = $in[$j];
switch($rep) {
case "a": {
$d = 0;
break;
}
case "b": {
$d = 1;
break;
}
case "c": {
$d = 2;
break;
}
case "d": {
$d = 3;
break;
}
case "e": {
$d = 4;
break;
}
case "f": {
$d = 5;
break;
}
case "g": {
$d = 6;
break;
}
case "h": {
$d = 7;
break;
}
case "i": {
$d = 8;
break;
}
case "j": {
$d = 9;
break;
}
case "k": {
$d = 10;
break;
}
case "l": {
$d = 11;
break;
}
case "m": {
$d = 12;
break;
}
case "n": {
$d = 13;
break;
}
case "o": {
$d = 14;
break;
}
case "p": {
$d = 15;
break;
}
}
$d = $d << 4;
$j++;
$rep = $in[$j];
switch($rep) {
case "a": {
$e = 0;
break;
}
case "b": {
$e = 1;
break;
}
case "c": {
$e = 2;
break;
}
case "d": {
$e = 3;
break;
}
case "e": {
$e = 4;
break;
}
case "f": {
$e = 5;
break;
}
case "g": {
$e = 6;
break;
}
case "h": {
$e = 7;
break;
}
case "i": {
$e = 8;
break;
}
case "j": {
$e = 9;
break;
}
case "k": {
$e = 10;
break;
}
case "l": {
$e = 11;
break;
}
case "m": {
$e = 12;
break;
}
case "n": {
$e = 13;
break;
}
case "o": {
$e = 14;
break;
}
case "p": {
$e = 15;
break;
}
}
$c = $d + $e;
$this->pkassemble();
$this->cfc = $this->inter >> 8;
$this->cfd = $this->inter & 255;
$c = $this->wordxor($c, ($this->wordxor($this->cfc, $this->cfd)));
for ($compte=0;$compte<16;$compte++)
$this->cle[$compte] = chr($this->wordxor(ord($this->cle[$compte]), $c));
$return = $return.chr($c);
$j++;
$l++;
}
return $return;
}
}
?>
What I tried was something like this
public function index()
{
var $test;
$test = encrypt("Hallo","nhifgbcnlfglffmh");
echo test;
}
$app = new PC1();
$app->index();
But I get Parse error: syntax error, unexpected T_VAR in.... I think the return implode does no return a string?
Upvotes: 1
Views: 77
Answers (1)
SuperDJ
Reputation: 7661
Since it is all in a class you first need to call the class
$app = new PC1();
Afther that you can call the functions inside that class:
$test = $app->encrypt("Hallo","nhifgbcnlfglffmh");
For the function to work as a URL param you could do the following:
URL: example.com?encrypt=Hallo
In the php page where it links to check for the $_GET so:
<?php
$app = new PC1();
if( !empty( $_GET['encrypt'] ) {
$encrypt = $_GET['encrypt'];
var_dump($app->encrypt($encrypt, "nhifgbcnlfglffmh"));
} elseif ( !empty( $_GET['decrypt'] ) ) {
$decrypt = $_GET['decrypt'];
var_dump($app->decrypt($decrypt, "nhifgbcnlfglffmh"));
}
Upvotes: 1
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