secury

AES-256-GCM encryption utility with Express middleware support for secure data transmission.

Features

• AES-256-GCM Encryption: Authenticated encryption with associated data (AEAD)
• Flexible Key Handling: Support for string keys, buffers, or auto-generated keys
• Express Middleware: Built-in middleware for decrypting request bodies
• Basic Auth Middleware: Simple token-based authorization
• Zero Dependencies: Uses only Node.js built-in crypto module

Installation

npm install secury




import secury from 'secury';

// Create AES handler with a string key
const aes = secury.aes('my-secret-key');

// Encrypt data
const encrypted = aes.encrypt('Hello, World!');
console.log(encrypted); // Base64 encoded string

// Decrypt data
const decrypted = aes.decrypt(encrypted);
console.log(decrypted); // 'Hello, World!'


import secury from 'secury';

// Generate a random 32-byte key
const aes = secury.aes(32);

// Get the generated key
const key = aes.aesKey();
console.log(key.toString('hex'));

// Renew the key
const newKey = aes.renew();




import express from 'express';
import secury from 'secury';

const app = express();
const aes = secury.aes('your-secret-key');

// Decrypt incoming requests
app.post('/secure', aes.authRoute(), (req, res) => {
  // req.body is automatically decrypted and parsed as JSON
  console.log(req.body);
  res.json({ success: true });
});



import express from 'express';
import secury from 'secury';

const app = express();

// Protect routes with a secret token
app.use('/admin', secury.basicAuthor('my-secret-token', { error: 'Unauthorized' }), (req, res) => {
  res.json({ message: 'Admin access granted' });
});