Example

const Keyauth = require('keyauth');
const path = require('path');
const fs = require('fs');
const { createHash } = require('crypto');

function check_sum() {
    let filename = path.basename(__filename) 

    if(!fs.existsSync(filename)) {
        filename = filename.replace(path.extname(filename), '.exe')
    }

    const content = fs.readFileSync(filename, 'binary')
    
    const md5 = createHash('md5').update(content).digest('hex')
    return md5
}

(async() => {
    const keyauth = new Keyauth(
        '', //application name
        '', //owner id
        '', //application secret
        '1.0', //version
        check_sum()
    );
    
    const app_info = await keyauth.initialize()

    console.log(app_info)
})()