written by p955432 on 23/01/2009
I am very interested in code breaking, this book was fantastic esprecially how he devised the frequency table...to find the most common letter in the english alphabet. I felt that it was excellent, i advise every body to read this book.......
he should have give a brief history about al-kindi because he was the first person to decode,
this book is one in a million
well done SIMON SINGH
written by on 09/09/2008
I studied Computer Security and this book was technically correct and explained well. Combined with the history of what was motivating the improvements in cryptoanalysis I found this book hard to put down. A must read - I enjoyed this book immensely and was sorry to finish it.
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