gistfile1.txt

function getSafeID() {
    var idLen = 50;
    var vResult = '';
    var browser1 = navigator.userAgent || '98d879sd7fIUODCOISAUCA9s8d7fs98d7fs98fd7s';
    var browser2 = navigator.appVersion || '7sJKSFHKSJFDd98f7sdf98s7df9s8d7f9';
    var browser3 = navigator.vendor || 'oa87f98s7df98sd7f98dsfs9e';
    var browser4 = navigator.platform || 'gHHpldsf987s0fs0d9fs0fdease';

    var hashMe = browser1 + browser2 + browser3 + browser4 + '00000000000000000000000000000000000000000000000000';

    var i = 0;
    var buf1 = []
    for (z = 0; z < hashMe.length; z++) {
        buf1[i] = hashMe.charCodeAt(z) ^ (Math.random() * 256);
        i = i + 1;
        if (i > idLen) i = 1;
    }


    for (var i = 0; i < idLen; i++) {
        vResult += pad(toHex(buf1[i] & 0xff), 2, '0');
    }
    var chkdigit = 0;
    for (var i = 0; i < idLen; i++) {
        chkdigit += vResult.charCodeAt(i) & 0xff;
        chkdigit = chkdigit & 0xFFFF
    }
    vResult = 'a-' + pad(toHex(chkdigit & 0xffff), 4, '0') + '-' + vResult;

    return vResult;
}