harryregel/cryptography

A Python-based tool for encrypting and decrypting messages using the cryptography library's Fernet method. The program features a simple command-line interface and automatic secret key generation for secure data protection.

🔒 Encryption and Decryption Program

This is a Python program that uses the cryptography library's Fernet method for encryption and decryption. It provides a simple command-line interface to choose between encrypting and decrypting a message.

🚀 Features

• Encrypt any message using the Fernet encryption method.
• Decrypt any previously encrypted message using the same method.
• Automatically generates and uses a secret key for encryption and decryption.

📦 Installation

1. Clone the repository:

   git clone https://github.com/yourusername/encryption-decryption.git
   cd encryption-decryption

2. Install the required dependencies:

   pip install cryptography

🛠️ Usage

1. Run the program:

   python main.py

2. Choose between encryption (E) and decryption (D):

   • For encryption, enter the message you want to encrypt.
   • For decryption, enter the encrypted message.

🔑 Key Management

• The program generates a secret.key file if it doesn't exist.
• This key is used for both encryption and decryption.
• Keep the secret.key file safe. Losing this file will make it impossible to decrypt any messages encrypted with it.

📄 Example

Choose (E)ncrypt or (D)ecrypt: E
Enter the message to encrypt: Hello, world!
Encrypted message: gAAAAABeJc2V-MvhF7L3qfjzIHHGJ9tF5MEP3Gj2Pi8Y5kbU6iE4z6MSv1JazbTtXRXFwG1Y1NRpkRznlx0Kigc=

Choose (E)ncrypt or (D)ecrypt: D
Enter the message to decrypt: gAAAAABeJc2V-MvhF7L3qfjzIHHGJ9tF5MEP3Gj2Pi8Y5kbU6iE4z6MSv1JazbTtXRXFwG1Y1NRpkRznlx0Kigc=
Decrypted message: Hello, world!

📂 File Structure

encryption-decryption/
│
├── main.py         # The main script to run the program
├── secret.key      # The secret key file (auto-generated)
└── README.md       # This README file

🤝 Contributing

1. Fork the repository.
2. Create a new branch (git checkout -b feature-branch).
3. Make your changes.
4. Commit your changes (git commit -am 'Add new feature').
5. Push to the branch (git push origin feature-branch).
6. Create a new Pull Request.

📜 License

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

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Made with ❤️ by Prince