SAP Upgrade Key Generator

sapkeygen.js

// generator.js

function generate()
{
	if (event.preventDefault) {
	    event.preventDefault();	}
	else {
	    event.returnValue = false; }


	var hexkey = [0, 0, 0, 0, 0];
	var sid = document.getElementsByName("sid")[0].value.toUpperCase();
	var host = document.getElementsByName("host")[0].value.toUpperCase();
	var sysnr = document.getElementsByName("sysnr")[0].value;

	if (sid.length != 3)
	{
		showError("SID must be 3 letters");
		return false;
	}

	if (host.length == 0)
	{
		showError("Host cannot be blank");
		return false;
	}

	if ((sysnr.length == 0) || (sysnr.length > 2))
	{
		showError("System number must be 1-2 digits");
		return false;
	}

	var sidsys = sid + zeroPad(sysnr);

	hostlen = host.length;

	if ((hostlen > 0) && (hostlen < 5))
	{
		host = host + Array(6 - hostlen).join(" ");
	}

	if ((hostlen > 5) && (hostlen < 10))
	{
		host = host + Array(11 - hostlen).join(" ");
	}

	if ((hostlen > 10) && (hostlen < 15))
	{
		host = host + Array(16 - hostlen).join(" ");
	}

	if (host.length < 15)
	{
		host = host + Array(16 - host.length).join('\0');
	}

    for (i = 0; i < 5; i++)
    {
        hexkey[i] = ((((0 ^ sidsys.charCodeAt(i)) ^ host.charCodeAt(i)) ^ host.charCodeAt(i + 5)) ^ host.charCodeAt(i + 10));
    }

    hexkey[0] = ((hexkey[0] ^ 84) ^ 0);
    hexkey[1] = ((hexkey[1] ^ 131) ^ 11);
    hexkey[2] = ((hexkey[2] ^ 194) ^ 46);
    hexkey[3] = ((hexkey[3] ^ 52) ^ 105);
    hexkey[4] = ((hexkey[4] ^ 119) ^ 188);

    strkey = "" + zeroPad(hexkey[0].toString(16).toUpperCase()) + zeroPad(hexkey[1].toString(16).toUpperCase()) + zeroPad(hexkey[2].toString(16).toUpperCase()) + zeroPad(hexkey[3].toString(16).toUpperCase()) + zeroPad(hexkey[4].toString(16).toUpperCase());

	showNotice("Your installation key is " + strkey);

	return false;
}

function showError(text)
{
	var notice = document.getElementById("notice");
	notice.innerHTML = text;
	notice.className = "error";
}

function showNotice(text)
{
	var notice = document.getElementById("notice");
	notice.innerHTML = text;
	notice.className = "notice";
}

function zeroPad(n)
{
    return (n.length < 2) ? ("0" + n) : n;
}