# Encryption
gpg -s image.jpg                 # Sign image.jpg
gpg -e -r Bill image.jpg         # Encrypt image.jpg for Bill
gpg -s -e -r Bill image.jpg      # Sign and encrypt image.jpg for Bill

# Decryption & Verification
gpg secret.jpg.gpg               # Decrypt secret.jpg.gpg
gpg --verify signed.jpg.gpg      # Verify signature on signed.jpg.gpg

# Keys & Keyrings
gpg --import key.asc             # Import key.asc into keyring
gpg --search-keys 'Ryan Jacobs'  # Search keyserver for key matching 'Ryan Jacobs'
gpg --list-keys                  # Show keys in keyring
gpg --fingerprint                # Show key fingerprints