Testing the encrypt() and decrypt functions...

Using IDEA
<?
dl("crypt.dll");

$key16 = "abcdefghijklmnop"; //16 bytes long
$key8 = "abcdefgh"; //8 bytes long
$key48 = $key16.$key16.$key16;
$string = "Jack and Jill went up the hill!!! Jack";
$crypted = encrypt($string,0,$key16);
$decrypted = decrypt($crypted,0,$key16);

echo ("String: $string\n");
echo ("IDEA encrypted string: $crypted \n");
echo ("IDEA decrypted string: $decrypted \n");

$crypted = encrypt($string,1,$key8);
$decrypted = decrypt($crypted,1,$key8);

echo ("\nMDC encrypted string: $crypted \n");
echo ("\nMDC decrypted string: $decrypted \n");

$crypted = encrypt($string,2,$key16);
$decrypted = decrypt($crypted,2,$key16);

echo ("\nDES encrypted string: $crypted \n");
echo ("\nDES decrypted string: $decrypted \n");

$crypted = encrypt($string,3,$key16);
$decrypted = decrypt($crypted,3,$key16);

echo ("\nXOR encrypted string: $crypted \n");
echo ("\nXOR decrypted string: $decrypted \n");
?>