Arch Linux Package Signing

Arch Linux Package Signing Guide

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

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Table of Contents

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

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Understanding Package Signing

What is Package Signing?

Package signing verifies package authenticity.

Benefits:

• Verify package integrity
• Prevent tampering
• Ensure authenticity

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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

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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

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Signing Packages

Sign Package

Sign with makepkg:

# Edit makepkg.conf
vim ~/.makepkg.conf

Add:

GPGKEY="your-key-id"

Build signed:

makepkg --sign

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Troubleshooting

Key Errors

Fix keys:

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

# Update keyring (use -Syu to avoid dependency issues)
sudo pacman -Syu archlinux-keyring

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Summary

This guide covered package signing, GPG keys, verification, and troubleshooting.

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Next Steps

• Arch Linux Package Management - Package management
• Arch Linux Security Configuration - Security
• ArchWiki Package Signing: https://wiki.archlinux.org/title/Pacman/Package_signing

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This guide is based on the ArchWiki. For the most up-to-date information, always refer to the official ArchWiki.