Decode encrypted KNX project using NodeJS

decodeKNX.mjs

import util from 'node:util';
import * as fs from 'node:fs/promises';
import * as crypto from 'node:crypto';
import Minizip from 'minizip-asm.js';

const
    reFile = /^P-[0-9A-F]{4}([/]0[.]xml|[.]zip)$/,
    pbkdf2 = util.promisify(crypto.pbkdf2);

export async function decodeProject(proj, password) {
    const zip = await fs.readFile(proj);
    const mz = new Minizip(zip);
    const file = mz.list().filter(f => reFile.test(f.filepath))[0];
    const encrypted = file.filepath.endsWith('.zip');
    let data = mz.extract(file.filepath);
    if (encrypted) {
        // from https://github.com/XKNX/xknxproject/blob/main/xknxproject/zip/extractor.py#L174
        // which is covered by GNU GENERAL PUBLIC LICENSE Version 2, June 1991
        const pwd2 = (await pbkdf2(Buffer.from(password, 'utf-16le'), '21.project.ets.knx.org', 65536, 32, 'sha256')).toString('base64');
        const mz = new Minizip(data);
        data = mz.extract('0.xml', {password: pwd2});
    }
    return data.toString('utf8');
}

console.log(await decodeProject(process.argv[2], process.argv[3]));