Configuring and Using GNU Privacy Guard (GPG)
This book isn’t the place for a full GPG tutorial. However, the LPI 102 exam requires you to understand how to use the standard GPG command to:
Generate a key pair
Import (i.e., add) a public key to a GPG keyring
Export both a public and private key
Encrypt and decrypt a file
You will also be expected to troubleshoot a standard implementation, which means that you’ll need to understand the files in the ~/.gnupg/ directory.