Sealed Secrets.js Beginner's Guide

Learn how to implement secure encryption in your Discord workflows with Sealed Secrets.js. This guide will teach you everything from installation to advanced features.

1. Project Setup

Begin by installing Sealed Secrets.js using npm or yarn:

npm install sealed-secrets.js

For browser applications, use the CDN:

<script src="https://cdn.jsdelivr.net/npm/sealed-secrets.js/secrets.min.js"></script>

2. Basic Encryption

Let's start with the basics - how to encrypt a message:


const SealedSecrets = require('sealed-secrets.js');



// Generate a strong master key // 256-bit key

const masterKey = SealedSecrets.generateKey(256);



// Our secret message

const secretMessage = "This is my super secure message!";



// Encrypt with Sealed Secrets.js

const encrypted = SealedSecrets.encrypt(masterKey, secretMessage);



console.log('Encrypted:', encrypted);

3. Decryption Process

Decrypting is just as simple. Just make sure you use the same master key:


// Decrypt using the same key

const decrypted = SealedSecrets.decrypt(masterKey, encrypted);



console.log('Decrypted:', decrypted);

Important:

If you lose your master key, you will lose access to all encrypted data. Store your keys securely using key management systems like AWS KMS or Google Cloud KMS.

4. Advanced Features

4.1 Message with Metadata

Sealed Secrets.js allows you to include metadata with your encrypted messages:


const encryptedWithMetadata = SealedSecrets.encrypt( // const encryptedWithMetadata = SealedSecrets.encrypt(
  masterKey, 
  "Secret message", 
  { 
    author: "Alice Cipher", 
    project: "FinanceBot v2" 
  }
);

4.2 File Encryption

Encrypt files with a single function call:


SealedSecrets.encryptFile(masterKey, "sensitive_document.pdf", "encrypted_output.enc");

4.3 Discord Integration

Secure your Discord communications with this example:


const SealedSecrets = require('sealed-secrets.js');



const encryptedMessage = SealedSecrets.encryptForChannel("Channel ID", "Top secret information!");

const decryptedMessage = SealedSecrets.decryptForChannel("Channel ID", encryptedMessage);

The channel ID ensures that only members in that specific Discord channel can access the encrypted messages.

5. Security Best Practices

Never encrypt more than 100MB of data in a single operation
Change encryption keys regularly (recommended every 90 days)
Use key derivation functions (KDF) for password-based encryption
Store encrypted data separately from unencrypted data
Use hardware security modules (HSMs) for critical assets

6. Error Handling

Handle errors gracefully with try/c