GnuPG (GNU Privacy Guard), often called GPG, is a free command-line tool used to scramble text and files so that unauthorized eyes cannot read them. It uses a system called public-key cryptography to securely lock and unlock emails and data. How GnuPG Works
GnuPG uses a pair of keys that work like a lock and key set:
Public Key: This is a key you share openly with the world. Anyone can use it to scramble (encrypt) a file or message meant for you.
Private Key: This is a secret key that you keep safe on your computer. It is the only key that can unscramble (decrypt) messages locked with your public key. Step-by-Step Shell Tutorial 🛠️ Step 1: Install GnuPG
Most Linux and Unix systems come with GPG pre-installed. You can check if you have it by typing gpg –version into your terminal. If it is missing, install it using your system’s package manager: Ubuntu/Debian: sudo apt install gnupg Red Hat/Fedora: sudo yum install gnupg 🔑 Step 2: Create Your Key Pair
To generate your first public and private key pair, run this command: gpg –generate-key Use code with caution. The terminal will guide you through a few quick questions:
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