This talk examines the keys and certificates that we use in everyday communication, with ssh, openssl and gnupg; the similarity and differences of the keys are discussed, and an ssh key being used to gpg/pgp sign or encrypt will be demonstrated. Different key distribution methods (for these converged keys) are examined, from the more manual methods typically in use today to hkp servers, and this will be demonstrated using a simple hkp server to distribute public keys to client machines. Various issues are then explored relating to revocation, key usage and data resilience.