At first glance, having no information on this other than a title and an image, I assumed there was some data encoded in the odd pattern on the flags at the top of the tombstone. I then read through the article waiting to learn what was there, and of course it was never mentioned.
A google search turned up a higher-resolution photo of the tombstone: http://elonka.com/friedman/Tombstone.JPG
The lines on the flags appear to be ordinary stripes, with nothing encoded in them. So I guess I can thank my own imagination for turning an otherwise fascinating story into a bit of a disappointment.
also, a book just came out about Elizebeth Friedman and how a lot of her contributions to cryptology and the birth of sigint in general have been erased from histroy: https://www.amazon.com/Woman-Who-Smashed-Codes-Outwitted-ebo...
it's supposed to be very good, but I just started it last night so don't have much of an opinion yet.
Link to the original source is buried within - http://elonka.com/friedman/FriedmanTombstone.pdf
Awww, that's lovely.
Geocaching tends to use bacon cyphers extensively, as they are very useful for hiding messages in plain sight.
This discussion of ciphers vs puzzles has reminded me of one of my favorite books growing up. It was Helen Fouché Gaines Elementary Cryptanalysis. I found it in the library in 1962 and treasured the copy my Aunt purchased for me.
This book predates the age of computers so every chapter introduces the common ciphers, including, military and diplomatic ones, in use at the time (I believe the first edition was written in 1943) along with the methods used to attack them.
Over time I worked my way through the exercises that appear at the end of each chapter. Computers make light work of these challenging puzzles now, but it’s still fun to write programs to break these old cipher systems.
Around 1987, I approached a very prominent professor in my CS program about being my Ph.D. dissertation advisor for a research project on Cryptography. He said that I should work in another area because cryptography had all been figured out and it didn’t look like there was anything interesting left in that field!
Nice little cryptogram, but they didn't secure the side-channel papers.
My nit here would be that these things aren't "ciphers" so much as they are "puzzles".
Anyone know why Twitter blocks any attempt to tweet this URL?
not loading for me, but interested in reading!
"I did my wife's sister and nobody caught me"