> ## Documentation Index
> Fetch the complete documentation index at: https://docs.oppiwallet.com/llms.txt
> Use this file to discover all available pages before exploring further.

# What is Enc Key?

> Understanding the Encryption Key in OppiWallet API

### Enc Key Overview

* **Function**: The Enc Key is used to create and sign JWT (JSON Web Tokens) for API requests
* **Usage**: Used to cryptographically sign requests to verify their authenticity
* **Visibility**: This should be treated as a private key and kept secure

### Implementation

To use your Enc Key properly:

```javascript theme={null}
// Example of creating a JWT using the Enc Key
const jwt = require('jsonwebtoken');

// Payload for your API request
const payload = {
  // Your request data
};

// Create a signed JWT using your Enc Key
const token = jwt.sign(payload, 'YOUR_ENC_KEY', { 
  algorithm: 'HS256',
  expiresIn: '1h'
});

// Include this token in your request
```

### Purpose

The Enc Key enables OppiWallet's systems to:

* Verify the authenticity of your requests
* Ensure data integrity during transmission
* Prevent unauthorized access to your account's functionality

### Security Considerations

Since the Enc Key functions similarly to a private key:

* **Never share** your Enc Key with third parties
* **Store securely** in environment variables or secure key management services
* **Rotate keys** periodically as part of security best practices
* If your Enc Key is accidentally exposed:
  1. Delete the compromised key immediately
  2. Create a new key pair
  3. Update all integrations with the new keys