File Encryptor & Decryptor App

A simple GUI application built with Tkinter to encrypt and decrypt text files using the Fernet encryption method from the cryptography library.

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Features

• Generate Encryption Key: Creates a key used for encrypting and decrypting files.
• Encrypt Files: Protects files by encrypting their contents.
• Decrypt Files: Unlocks previously encrypted files using the same key.
• User-Friendly Interface: Easy-to-use GUI built with Tkinter.

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How to Use

1. Run the application

• Download the app.exe from the release folder.
• Double-click app.exe to launch the GUI. No need to install Python or dependencies.

2. How to use application features

1. Generate Key:

   • Click "Generate Key" to create an encryption key (key.key).
   • Save this key securely; it's required for both encryption and decryption.

2. Encrypt File:

   • Click "Encrypt File" and select a text file.
   • The selected file will be encrypted and overwritten with encrypted content.

3. Decrypt File:

   • Click "Decrypt File" and select an encrypted file.
   • If the correct key is used, the file will be decrypted successfully.

4. Exit:

   • Click "Exit" to close the application.

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Dependencies

If you want to run the source code directly, ensure you have the following installed:

1. Python 3.x
2. cryptography library
   Install it using:

   pip install cryptography

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Build Instructions

To generate the .exe file from the source code:

1. Install PyInstaller:

       pip install pyinstaller

2. Run the following command:

       pyinstaller --onefile --windowed encryptor_gui.py

3. The executable will be available in the /dist folder.

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Notes

• Keep the key.key file safe! Without it, you cannot decrypt encrypted files.
• The encryption method used is Fernet from the cryptography library, which ensures secure symmetric encryption.

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License

This project is open-source and free to use.