Ever so minor addition to THS Mysteries

[whswhs]

Originally Posted by ClayDowling

Bonus points if the text is encrypted using a deck of cards. Wish I could claim responsibility for this, but Bruce Schneier published this system some time back, and the KGB was actively using it during the cold war.

At least as described in Cryptonomicon, the system looked as if it might have been suggested by a scene of communication via deck of cards in Heinlein's 1940s story "Gulf."

Bill Stoddard