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Installing Arch Linux with Btrfs, LUKS encryption and YubiKey Authentication

In this tutorial I will show you how to use your YubiKey with LUKS. In this case we will use our key to shorten encryption password. Person, who will get access to your machine but without key, will be prompted for very long, computer generated password. On the other hand - you - will be prompted only for the PIN for your attached YubiKey. Of course your PIN also should be as long and complicated as possible, but you should be able to memorize it.