@lwflouisa  A PGP keypair consists of multiple keys, the certificate, encrypting keys, signing keys etc. I personally have setup where I have an offline masterkey (for signing keys and creating new subkeys) and then I have signing subkeys on my everyday devices. Should my everyday computer be compromised in any way, I can just go home and revoke the subkey, create a new one and not loose the reputation associated with my master key.