Encryption Tutorial — Safe Educational Example

Purpose: educational demonstration of using cryptography.Fernet to encrypt/decrypt files in a safe, non-destructive way.
Not for malicious use. Do not use this project to encrypt systems you do not own or control. The author disclaims responsibility for misuse.

What this repo contains

• src/generate_key.py — generate a Fernet key and save to keys/thekey.key
• src/encrypt.py — encrypts files in examples/ and produces .enc files (keeps originals by default)
• src/decrypt.py — decrypts .enc files in examples/ and writes .dec files (keeps .enc files)
• examples/ — add test files here (e.g., sample.txt)
• .gitignore — keeps keys out of git

Getting started (local)

1. Clone the repo and cd into it.
2. Create a Python virtual environment:

   python3 -m venv venv
   source venv/bin/activate
   pip install -r requirements.txt