Customer Rating: 
Summary: A piece of excellence
Comment: This book is an bsolute must read for anyone dealing with security. It covers almost everything in the field, and gives a deep insight, plus the correct way to think. If you need details on a specific topic, you'll find a way to that too, the book has a 1600+ list of references.
Customer Rating:
Summary: One third theory, one third practice, one third politics
Comment: An excellent, informative and entertaining introduction to this field.The first third covers, in reasonably technical detail, the theory and mathematical implementation of cryptosystems. Much of this isn't necessary for the casual reader, but its the clearest explanation of this arcane stuff you're going to find anywhere. The second third covers real-world applications of cryptosystems - electronic voting, cyber-money, key management and a thousand other inventive uses. Sufficiently non-technical for even a salesman to understand. The last third covers the politics of modern encryption, and is more intriguing, exciting and informative than any Tom Clancy novel. This last part alone is worth the price of the book. Schneier's writing style is informal, informative and often humourous. It's hard to believe anyone can write about such a (potentially) dry subject and yet include some genuine jokes! Buy this book.
Customer Rating:
Summary: The best book of cryptography
Comment: After I had read this book I had understand the secrets of security and cryptography in netware. It is the best book that I have been reading with this subject. It worth all the money.
Customer Rating: 
Summary: A good overall explanation if you don't want all the details
Comment: The explanations are good in this book, but if you want to build your own cryptographic algorithms, do not expect to do so with knowledge from this book. The source code in the book is incomplete, functions are missing, code syntax is wrong, and it is poorly written. It does not go into the specific details of implemting cryptography (like Large Integers, repeated squaring, etc..)
Customer Rating:
Summary: Invaluable resource for almost everyone.
Comment: The red cover of the book drew my attention while I was browsing the shelves of the library here. I borrowed the book and was immediately fascinated by the style of the book. Clear outlines, huge reference appendix for readers who want to delve further into particular subjects, not too much plain text on one page. It gives a perfect overview of the things a cryptographer, or just an interested amateur, needs to know about particular subjects.There might be one little disadvantage (it wasn't for me though), and that's the rather superficial coverage of some of the concepts, especially the mathematical background (number theory, complexity theory) of cryptography. But the book is not intended to be a math book. If you want to study the mathematics of cryptography, read Konheim or Niederreiter. If you want to study the concepts that underly the many fields of cryptography, read Schneier.
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