brew install gnupg
gpg --generate-key
# List keys
gpg -k
# Encrypt file
gpg -se -r USER_ID FILE_NAME
# Decrypt file
gpg -d FILE_NAME > FILE_NAME
# Export public key
gpg --armor --export USER_ID > user-pub.asc
# Export private key
gpg --export-secret-key 93745B482C28E36B3DB3261D96B299D32789C1F6 > user-priv.asc
# Remove keypair
gpg --delete-secret-key USER_ID
gpg --delete USER_ID
gpg --import user-pub.asc user-priv.asc