Developer's Guide to PGP: Securing Code and Git Commits

In an era of increasing software supply chain attacks, ensuring the integrity of your source code is more critical than ever. Public repositories are vulnerable to identity spoofing, making verified developer signatures a vital line of defense. This text-based course guides you through the fundamentals of Pretty Good Privacy (PGP) and how to apply it to your daily development workflow. You will progress from understanding cryptographic basics to confidently signing your work, ensuring that your team and community can trust every line of code you publish. You will learn to: 1. Understand the foundational concepts of asymmetric cryptography, public-private key pairs, and digital signatures. 2. Generate and configure secure PGP keys using modern algorithms like Ed25519. 3. Configure Git to automatically sign your commits and tags on your local machine. 4. Verify your identity on major hosting platforms to earn the verified status on your commits. 5. Manage your keys safely, including exporting, backing up, and revoking keys when necessary. The course starts with essential cryptographic terminology and key management concepts before moving to hands-on configuration steps for your terminal and repository hosting services. You will learn through clear, text-based explanations and step-by-step command-line guides. This course is designed for beginner developers, software engineers, and open-source contributors with no prior experience in cryptography. A basic familiarity with the command line and Git is helpful but not required. Start securing your software supply chain and protecting your developer identity today.