Session Encryptor and Decryptor

This package provides encryption and decryption utilities for Baileys sessions. The code allows you to securely encrypt session data and later decrypt it back to its original state.

Features

• Encrypt Baileys session: Encrypt your session credentials and synchronization data into a single encrypted file.
• Decrypt Baileys session: Decrypt the encrypted session back into its original JSON files (creds.json and app-state-sync-key-{appStateKeyId}.json).

Prerequisites

Before using this tool, make sure you have the session files generated from Baileys. You need the following:

• creds.json (session credentials file)
• app-state-sync-key-{appStateKeyId}.json (sync key file)

Installation

To use the package, you need Node.js (version 14 or higher) installed. You can install the required dependencies via:

npm install baileys

Or with Yarn:

yarn install baileys

Usage

Encrypt Session

To encrypt your Baileys session, use the encryptSession function. It merges your session and sync key data, then encrypts the combined data using AES-256-CBC.

import { encryptSession } from './sessionEncryptor';

const encryptedSession = encryptSession('path/to/creds.json');
console.log('Encrypted session data:', encryptedSession);

The encrypted session is saved to a file named session.json in your current working directory.

Decrypt Session

To decrypt a previously encrypted session, use the decryptSession function. It restores the original creds.json and sync key files.

import { decryptSession } from './sessionEncryptor';

const sessionData = decryptSession('path/to/session.json', './outputDir');
console.log('Decrypted session data:', sessionData);

The decrypted session files will be saved in the specified output directory (defaults to ./session).

Code Explanation

encryptSession(initSession)

This function:

1. Reads the session and sync key files.
2. Merges the session data and sync key.
3. Encrypts the merged data using AES-256-CBC.
4. Saves the encrypted session as session.json.

decryptSession(sessionSource, outputDir)

This function:

1. Reads the encrypted session from the provided file.
2. Decrypts the data using the key and IV from the encrypted file.
3. Restores the original creds.json and sync key files into the specified output directory.

Example

import { encryptSession, decryptSession } from './sessionEncryptor';

// Encrypt session
const encryptedSession = encryptSession('path/to/creds.json');
console.log('Encrypted session data:', encryptedSession);

// Decrypt session
const decryptedSession = decryptSession('path/to/session.json', './decryptedSession');
console.log('Decrypted session data:', decryptedSession);

Dependencies

• node:fs (for file operations)
• node:crypto (for encryption and decryption)
• node:path (for path manipulations)