Encrypt / Decrypt using createCipheriv

encryptDecrypt_createCipheriv.js

const {createCipheriv, createDecipheriv, createHash, randomBytes} = require('crypto');

function encrypt (input, password) {

	const IV = Buffer.from(randomBytes(16));

	const encryptor = createCipheriv(
		'aes-128-cbc',
		createHash('md5').update(password).digest(),
		IV
	);

	encryptor.setAutoPadding(true);
	encryptor.write(input);
	encryptor.end();

	return Buffer.concat([
		IV,
		encryptor.read()
	]).toString('base64');
}

function decrypt (cipher, password) {
	const un_base64 = Buffer.from(cipher, 'base64');

	const IV = un_base64.slice(0, 16);
	const cipher_text = un_base64.slice(16);

	const decrypter = createDecipheriv(
		'aes-128-cbc',
		createHash('md5').update(password).digest(),
		IV
	);

	decrypter.write(cipher_text);
	decrypter.end();

	return decrypter.read().toString('utf8');
}

const encrypted = encrypt('https://www.youtube.com/watch?v=ab8GtuPdrUQ', 'somepassword');
const decrypted = decrypt(encrypted, 'somepassword');

console.log({encrypted});
console.log({decrypted});