The Library
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May I recommend a very good action ciphering book ALEX RIDER its a 0good book in general and has a lot of problem solving things which I personally enjoy
Anthony Horowitz is a friend of the National Cipher Challenge, so he will appreciate this recommendation. Harry
Reading “The Codebreakers”, mentioned in post #98506, Chapter 12 describes the work of William F. Friedman. Friedman did most of the teaching of class of Army officers, sent in the fall of 1917 to Riverbank’s Department of Ciphers to learn cryptology. The collection of his technical monographs, known as the Riverbank Publications,produced to support the course, are available at the following link:
William F. friedman Collection
This site includes the following classic publications; “The Index of Coincidence and Its Applications In Cryptanalysis” and “A Method for Reconstructing a Primary Alphabet from any One of the Secondary Alphabets” plus many other fascinating documents.
Does anyone know what the Copperfield Disclosures are?
Regarding Choose Your Own Adventures Books, I know that the same people who created this book have released four more of similar style. Also, books from James Hamer Morton are good for beginners to cryptography. Lastly, there’s popular titles such as Murdle and such which are also useful.
Pages 339 – 345 of “The Codebreakers” describes the work of Georges Painvin, of the Bureau du Chiffre, and his work on the notorious ‘ADFGVX’ cipher.
Found an error in Yuli Billig’s book (the book posted in Harry’s Christmas stuff):
p 36: “This is the most economical proof of these important formulas.”
Wrong! The most economical proof uses Euler’s formula e^(iθ) = cos θ + i sin θ.
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