Simple String Encryption & Decryption with Node.js

encrypt_decrypt.ts

import {createCipheriv, createDecipheriv} from "crypto";

const ALGORITHM = "aes-256-cbc";
const ENCODING = "utf8";
const DEFAULT_INITIALIZATION_VECTOR = "0";
const DEFAULT_SYMMETRIC_KEY = "d6F3Efeq";

function encrypt(value: string, key = DEFAULT_SYMMETRIC_KEY, iv = DEFAULT_INITIALIZATION_VECTOR) {
  const cipher = crypto.createCipheriv(ALGORITHM, key, iv);
  let crypted = cipher.update(value, ENCODING, "base64");
  crypted += cipher.final("base64");
  return crypted;
}

function decrypt(value: string, key = DEFAULT_SYMMETRIC_KEY, iv = DEFAULT_INITIALIZATION_VECTOR) {
  const decipher = crypto.createDecipheriv(ALGORITHM, key, iv);
  let dec = decipher.update(value, "base64", ENCODING);
  dec += decipher.final(ENCONDING);
  return dec;
}

const hw = encrypt("hello world");
decrypt(hw);

// feel free to change >> d6F3Efeq
// To test just copy + paste the above inside the node shell
// TIP: always encrypt IDs before sending via HTTP

#L18 typo: ENCONDING should be ENCODING