AES-256 File Vault (GCM Mode)

This is a Python script that provides secure, authenticated file encryption and decryption using the Advanced Encryption Standard (AES) with a 256-bit key in Galois/Counter Mode (GCM). The script is designed to process files located in a designated secret folder and securely deletes the original file immediately after successful processing (either encryption or decryption).

✨ Features

• AES-256 GCM: Uses a highly secure, authenticated encryption mode (GCM) which ensures both confidentiality and integrity.
• Key Derivation: Uses Scrypt to securely derive the 256-bit encryption key from a user password, protecting against brute-force attacks.
• File Handling: Encrypts and decrypts entire files (.txt, .pdf, .jpg, etc.).
• Secure Deletion: Overwrites the original file with random data before deletion to prevent simple data recovery.
• Dedicated Commands: Uses separate command-line arguments for encryption and decryption.

⚙️ Setup and Installation

1. Prerequisites

You must have Python 3.8+ installed on your system.

2. Install Dependencies

This project requires the pycryptodome library. Open your terminal in the project directory and run:

pip install pycryptodome

3. 🔑 Encryption

To encrypt a plaintext file (e.g., my_plans.txt) located in the secret folder.

Command:

#### General Syntax:
python fileVault.py encrypt <filename>

#### Example (Assuming your working Python is in your PATH):
python fileVault.py encrypt my_plans.txt

4.🔓 Decryption

To decrypt a ciphertext file (e.g., my_plans.txt.enc) located in the secret folder.

Command:

#### General Syntax:
python fileVault.py decrypt <filename.enc>

#### Example:
python fileVault.py decrypt my_plans.txt.enc