Stamp generation

hyundai.js

const date = '1614538506419'
const xorKey = Buffer.from('RFtoRq/vDXJmRndoZaZQyfOot7OrIqGVFj96iY2WL3yyH5Z/pUvlUhqmCxD2t+D6B+A=', 'base64');
const rawData = Buffer.from(`014d2225-8495-4735-812d-2616334fd15d:${date}`, 'utf-8');

const xorBuffers = (a, b) => {
    if(a.length !== b.length) {
        throw new Error('Buffer are not the same size');
    }
    const outBuffer = Buffer.alloc(a.length);
    for(let i = 0; i< outBuffer.length; i++) {
        outBuffer.writeUInt8(a[i] ^ b[i], i);
    }
    return outBuffer;
}

console.log(xorBuffers(xorKey, rawData).toString('base64'));

kia.js

const date = '1614538506419'
const xorKey = Buffer.from('wLTVxwidmH8CfJYBWSnHD85blPya6TjKbuHgL2FCr+Kh8gx+uckCyT5W7h4Ngbn3IuY=', 'base64');
const rawData = Buffer.from(`e7bcd186-a5fd-410d-92cb-6876a42288bd:${date}`, 'utf-8');

const xorBuffers = (a, b) => {
    if(a.length !== b.length) {
        throw new Error('Buffer are not the same size');
    }
    const outBuffer = Buffer.alloc(a.length);
    for(let i = 0; i< outBuffer.length; i++) {
        outBuffer.writeUInt8(a[i] ^ b[i], i);
    }
    return outBuffer;
}

console.log(xorBuffers(xorKey, rawData).toString('base64'));