Linux Package Signing - ryzendew/Linux-Tips-and-Tricks GitHub Wiki

Linux Package Signing Guide

Complete beginner-friendly guide to package signing on Linux, covering Arch Linux, CachyOS, and other distributions including GPG keys, package verification, and signing configuration.

Table of Contents

  1. Understanding Package Signing
  2. GPG Key Setup
  3. Package Verification
  4. Signing Packages
  5. Troubleshooting

Understanding Package Signing

What is Package Signing?

Package signing verifies package authenticity.

Benefits:

  • Verify package integrity
  • Prevent tampering
  • Ensure authenticity

GPG Key Setup

Initialize GPG

Setup GPG:

# Install GPG
sudo pacman -S gnupg

# Generate key
gpg --full-generate-key

# List keys
gpg --list-keys

Import Arch Keys

Import keys:

# Import Arch master keys
sudo pacman-key --init
sudo pacman-key --populate archlinux

Package Verification

Verify Packages

Check signatures:

# Verify package
pacman -Qkk package-name

# Verify database
sudo pacman-key --verify

Check Keyring

Manage keyring:

# List keys
pacman-key --list-keys

# Refresh keys
sudo pacman-key --refresh-keys

Signing Packages

Sign Package

Sign package:

# Sign package
gpg --detach-sign package.pkg.tar.zst

Troubleshooting

Key Errors

Fix keys:

# Refresh keys
sudo pacman-key --refresh-keys

# Update keyring
sudo pacman-key --update

Summary

This guide covered package signing for Arch Linux, CachyOS, and other distributions, including GPG keys, verification, and signing.

Next Steps

This guide covers Arch Linux, CachyOS, and other Linux distributions. For distribution-specific details, refer to your distribution's documentation.