npm package: @nextlayer/vaultx
Description: VaultX is a modular, production-grade security library for Node.js, designed to provide authentication, authorization, and encryption for high-scale applications.
Author: Alex Joshva
Latest version: 2.0.0

# VaultX Security Library

VaultX is a comprehensive, production-grade security library designed to provide robust authentication, authorization, and encryption features for applications across multiple programming languages.

## Features

### 🔐 Advanced Encryption
- AES-256-GCM encryption with authenticated encryption
- RSA asymmetric encryption and digital signatures
- Secure key generation and management
- Support for multiple encryption algorithms
- Initialization vector (IV) handling

### 🔑 Authentication
- JWT-based authentication
- OAuth2 integration
- Refresh token support
- Argon2id password hashing
- Multi-factor authentication support

### 👥 Authorization
- Role-Based Access Control (RBAC)
- Permission-based authorization
- Token-based session management
- Fine-grained access control

### 🛡️ Security Features
- Rate limiting protection
- CORS configuration
- Helmet security headers
- Input validation and sanitization
- Protection against common attacks (XSS, CSRF, etc.)

### 📝 Logging and Monitoring
- Comprehensive security logging
- Winston-based logging system
- Error tracking and monitoring
- Audit trails

### 🌐 Multi-Language Support
VaultX can be used with any programming language through its REST API interface. Here are some examples:

#### Python
```python
import requests

def encrypt_data(data):
    response = requests.post('http://localhost:3000/crypto/encrypt', json={
        'data': data,
        'algorithm': 'aes-256-gcm'
    })
    return response.json()
```

#### Java
```java
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;

public class VaultXClient {
    public String authenticate(String username, String password) {
        HttpPost request = new HttpPost("http://localhost:3000/auth/login");
        // Add authentication logic
    }
}
```

#### PHP
```php
<?php
function encryptData($data) {
    $ch = curl_init('http://localhost:3000/crypto/encrypt');
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode(['data' => $data]));
    $response = curl_exec($ch);
    return json_decode($response, true);
}
```

## Installation

1. Clone the repository:
```bash
git clone https://github.com/yourusername/vaultx.git
```

2. Install dependencies:
```bash
npm install
```

3. Copy the environment configuration:
```bash
cp .env.example .env
```

4. Configure your environment variables in the .env file

5. Start the server:
```bash
npm start
```

## API Documentation

Once the server is running, you can access the API documentation at:
```http://localhost:3000/api-docs```

## Security Best Practices

1. Always use HTTPS in production
2. Regularly rotate encryption keys
3. Implement proper error handling
4. Use secure session management
5. Enable rate limiting
6. Implement proper logging and monitoring
7. Keep dependencies updated

## Contributing

1. Fork the repository
2. Create your feature branch
3. Commit your changes
4. Push to the branch
5. Create a new Pull Request

## License

This project is licensed under the MIT License - see the LICENSE file for details.

## Support

For support, please open an issue in the GitHub repository or contact the maintainers.