crypto.js

const {loadConfig} = require("./utils");
loadConfig();

const crypto       = require('crypto');
const {loggerKeys} = require("./logger");
const algorithm    = 'aes-256-ctr';
const secretKey    = process.env.CRYPTO_SECRET;
const iv           = crypto.randomBytes(16);

const encrypt = (text) => {
	const cipher        = crypto.createCipheriv(algorithm, secretKey, iv);
	const encrypted     = Buffer.concat([cipher.update(text), cipher.final()]);
	const encryptedData = {
		iv:      iv.toString('hex'),
		content: encrypted.toString('hex')
	};
	
	return Buffer.from(JSON.stringify(encryptedData)).toString('base64');
};

const decrypt = hash => {
	const encryptedData = JSON.parse(Buffer.from(hash, 'base64').toString('binary'));
	const decipher      = crypto.createDecipheriv(algorithm, secretKey, Buffer.from(encryptedData.iv, 'hex'));
	const decrypted     = Buffer.concat([decipher.update(Buffer.from(encryptedData.content, 'hex')), decipher.final()]);
	
	return decrypted.toString();
};

const getSecretKey = (source, bypassRecaptcha) => {
	const secret = encrypt(JSON.stringify({source, bypassRecaptcha}));
	
	loggerKeys.info(`Source: ${source}, Bypass recaptcha: ${bypassRecaptcha} - ${secret}`);
	
	return secret;
};

module.exports = {
	getSecretKey,
	decrypt
};