Rust File Encryptor

A command-line application written in Rust that allows users to encrypt and decrypt files using the AES-256-GCM encryption standard. This project demonstrates basic file handling, encryption, and decryption techniques in Rust.

Features

Encrypt files: Securely encrypt any file and save it with a .enc extension.
Decrypt files: Restore an encrypted file to its original content.
AES-256-GCM encryption: Uses a robust encryption standard for security.
Random nonce generation: Ensures cryptographic strength with a unique nonce for each operation.

Requirements

Rust (version 1.65.0 or later)

Installation

Clone the repository:

git clone https://github.com/Cod-e-Codes/rust-file-encryptor.git
cd rust-file-encryptor

Build the project:
```
cargo build --release
```
Run the project:
```
cargo run
```

Usage

When you run the application, you will be presented with a menu:

File Encryptor
Choose an option:
1. Encrypt a file
2. Decrypt a file
3. Quit

Encrypt a File

Select 1 from the menu.
Enter the path to the file you want to encrypt.
The application will create a new encrypted file with the .enc extension in the same directory.

Decrypt a File

Select 2 from the menu.
Enter the path to the encrypted file (with the .enc extension).
The application will create a new decrypted file with the .dec extension in the same directory.

Quit

Select 3 from the menu to exit the application.

Example Workflow

Encrypt a File

Input:

Choose an option: 1
Enter the path of the file to encrypt: sample.txt

Output:

File encrypted and saved as sample.txt.enc

Decrypt a File

Input:

Choose an option: 2
Enter the path of the file to decrypt: sample.txt.enc

Output:

File decrypted and saved as sample.txt.dec

Security Notes

The encryption key in this example is hardcoded for simplicity ([0u8; 32]). For real-world applications, always generate and securely manage keys.
Ensure you use a secure method to store and retrieve keys when deploying the application in production.

File Structure

main.rs: Contains the program logic for encryption and decryption.

Dependencies

aes-gcm: Provides AES-GCM encryption functionality.
aes: Low-level AES implementation.
rand_core: Used for generating random nonces.

License

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

Contributing

Contributions are welcome! Feel free to open an issue or submit a pull request.

Future Enhancements

Add support for user-provided encryption keys.
Implement secure key storage and retrieval.
Improve error handling and logging.