sovay: (Cho Hakkai: intelligence)
sovay ([personal profile] sovay) wrote2022-05-11 06:58 pm

I've been moving with the bodies that move to a different sound

I just taught my niece a simple substitution cipher and within ten minutes she had correctly deciphered a short message I had written to her. I could watch her make the connections, exclaiming as she recognized individual encrypted letters without having to refer to the key. Then she drew a picture at the bottom of the page to make it clear she had not just copied out but understood. Morse code, Playfair, one-time pads, here we come.
vass: Small turtle with green leaf in its mouth (Default)

[personal profile] vass 2022-05-13 11:29 am (UTC)(link)
That's a great age of nibling to have.

I did that too when my niece had a copy of... I forget the book, but it was a modern version of one of those old-fashioned activity books, and it had a substitution cipher in it.

So I sent her a note in that cipher, saying "If you can read this, I owe you a Mars bar" and left the promised chocolate in her grandparents' fridge for safekeeping.
Edited 2022-05-13 11:30 (UTC)