Authenticate capability of DSA or RSA signing keys

[Kevin Hilton]

>Sign = sign some data
>Certify = sign a key
>Authenticate = prove you are you

>Authenticate is used for things like using an OpenPGP key for ssh.

I forgot about the certifying of keys, sorry about that.

I knew openssh utilized rsa or dsa keys, but didn't know that the same
gpg keys could be used for this purpose.  That's very interesting.  I
suppose however the reverse is not true.  I suppose I could not take
my rsa openssh keypair, and somehow make them work with gpg?