encryptlib PHP 用の暗号化ライブラリ

加密

function kPHPCrypt($strDataIn) {
return StrRevCrypt(ROT13Crypt($strDataIn));
}

function ROT13Crypt($strDataIn) {

/ /ABCDEFGHIJKLM
//NOPQRSTUVWXYZ

$newString = "";

for ($i = 0; $i

$temp = substr($strDataIn, $i, 1) ;
$asc = ord($temp);

$newChar = $temp;

if (($asc >= 65) && ($asc if ($ asc if ($asc >= 65 + 13) $newChar = chr($asc - 13);
}

if (($ asc >= 97) && ($asc if ($asc if ($asc >= 97 + 13) $newChar = chr($asc - 13);
}

$newString = $newString 。 $newChar;  

}

return $newString;

}

function StrRevCrypt($strDataIn) {

$newString = "";

for ($ i = strlen($strDataIn) - 1 ; $i >= 0; $i--) {
$temp = substr($strDataIn, $i, 1);
$newString = $newString 。 $temp;
}

return $newString;

}

?>