secure-express-setup/lib/encryption.js

Military-grade one-command security setup for Express.js applications

const CryptoJS = require('crypto-js');

function setupEncryption(key) {
  return {
    encrypt: (data) => {
      const encrypted = CryptoJS.AES.encrypt(JSON.stringify(data), key).toString();
      return encrypted;
    },

    decrypt: (encryptedData) => {
      try {
        const decrypted = CryptoJS.AES.decrypt(encryptedData, key);
        const decryptedStr = decrypted.toString(CryptoJS.enc.Utf8);
        return JSON.parse(decryptedStr);
      } catch (err) {
        throw new Error('Decryption failed');
      }
    },

    hash: (data) => {
      return CryptoJS.SHA256(data).toString();
    }
  };
}

module.exports = { setupEncryption };