if you haven't read The Code Book by Simon Singh (as I recommended), you'll be surprisingly pleased by its depth. Everyone loves it. It was the book that inspired that spreadsheet; it clearly contains enough info to go and try and implement an Engima machine :) It also covers Lorenz (http://en.wikipedia.org/wiki/Lorenz_cipher) and such. It covers lots of both older and newer systems too, and even has a puzzles section.
If you want more of the human side, "Code Breakers: The Inside Story of Bletchley Park" is a dry non-technical memoirs by a those who were actually there.
Thanks for everyone shabble, fduran and willvarfar's responses; I didn't realize The Code Book's depth and am really excited to see the positive responses here.
if you haven't read The Code Book by Simon Singh (as I recommended), you'll be surprisingly pleased by its depth. Everyone loves it. It was the book that inspired that spreadsheet; it clearly contains enough info to go and try and implement an Engima machine :) It also covers Lorenz (http://en.wikipedia.org/wiki/Lorenz_cipher) and such. It covers lots of both older and newer systems too, and even has a puzzles section.
If you want more of the human side, "Code Breakers: The Inside Story of Bletchley Park" is a dry non-technical memoirs by a those who were actually there.
I would like to know more about Dilly's attacks on Spanish Enigma - http://www.schneier.com/blog/archives/2012/03/rare_spanish_e... - anyone know a book with any detail? Anything on his earlier work too, even?