I wonder if it would be possible to make a usable dedicated hardware encryption card for the Apple II using 80s tech.
(Of course, it has the downside that upgrading to a new protocol would require a new card, but hey... we're just having fun musing on retro-futurism here!)
(Of course, it has the downside that upgrading to a new protocol would require a new card, but hey... we're just having fun musing on retro-futurism here!)