I believe he is Finney. Finney was one of main developers of PGP so he had a strong crypto knowledge. Do you remember Satoshi Dorian Nakamoto? It turns out he

I believe he is Finney. Finney was one of main developers of PGP so he had a strong crypto knowledge. Do you remember Satoshi Dorian Nakamoto? It turns out he lived near Finney. Maybe Finney knew him and thought it was a nice name.