Encrypting files with GnuPG

Generate a key pair
# gpg --gen-key

List public keys
# gpg --list-keys

Export a public key
# gpg -o  mykey.key  --export  --armor key-id

Import a public key
# gpg --import file.key

Encrypt a file
# gpg --encrypt  --armor -r  key-id  <file>

Decrypt a file
# gpg --decrypt  <file>