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Synopsis
Explains various methods used in cryptography and presents examples to help readers in breaking secret codes.
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Most Helpful Customer Reviews
3 of 3 people found the following review helpful
Format:Paperback
This is a fascinating introductory book about codes and ciphers. It is very readable and understandable for young adults and older. Anyone who is interested in codes and ciphers will like, and want to own this book.
9 of 10 people found the following review helpful
Format:Paperback
Very well written. This book offers an introduction to "crypto-stuff" such as mono/polyalphabetic substitutions and grille methods. It doesn't go into much of anything else in huge detail, but it offers many methods including "how to build" your own encoding/decoding tools. If you're looking for some fun reading, I highly recommend it. If you're serious about learning though, check out "the code breakers" by kahn.
Most Helpful Customer Reviews on Amazon.com (beta)
Amazon.com:
8 reviews
38 of 40 people found the following review helpful
fun for beginners...
3 July 1999
Format:Paperback
Very well written. This book offers an introduction to "crypto-stuff" such as mono/polyalphabetic substitutions and grille methods. It doesn't go into much of anything else in huge detail, but it offers many methods including "how to build" your own encoding/decoding tools. If you're looking for some fun reading, I highly recommend it. If you're serious about learning though, check out "the code breakers" by kahn.
13 of 13 people found the following review helpful
Non-Mathematical Intro to Ciphers of Historical Interest
13 Jun 2007
Format:Paperback
This is a good, well-written book requiring essentially no mathematical background. It's appropriate for teens and older folks interested ciphers. As another writer has pointed out, it's not current (this is a Dover reprint of a 1972 Simon & Schuster work), and the very few places where it says a code is still in use, it's likely not. I don't view this as a problem.
Ciphers are categorized and historical development is given. Invisible inks and the like are discussed, as are microdots, and SETI, though not by that name. Modern ciphers get no mention whatsoever--thus the non-mathematical nature. The approach doesn't consider computers to any real extent. Also, certain historical items that could have been covered, like the Enigma, aren't mentioned.
There are three weaknesses, IMHO, that keep it below 5 stars.
(1) Most of the ciphers presented have a set of possible setups, which can effectively be considered keys. E.g., the Caesar Cipher, using the Roman alphabet, has 25 different possible versions, which can be considered 25 different keys. Gardner makes no attempt to explain the relative complexities of breaking the various ciphers.
(2) The age.
(3) There is no index, but the table of contents is detailed.
I expect to use a few of these ciphers in introductory computing classes (think CS1, CS2) in the near future--the explanations are clear enough for undergrads with no real background and minimal interest.
Ciphers are categorized and historical development is given. Invisible inks and the like are discussed, as are microdots, and SETI, though not by that name. Modern ciphers get no mention whatsoever--thus the non-mathematical nature. The approach doesn't consider computers to any real extent. Also, certain historical items that could have been covered, like the Enigma, aren't mentioned.
There are three weaknesses, IMHO, that keep it below 5 stars.
(1) Most of the ciphers presented have a set of possible setups, which can effectively be considered keys. E.g., the Caesar Cipher, using the Roman alphabet, has 25 different possible versions, which can be considered 25 different keys. Gardner makes no attempt to explain the relative complexities of breaking the various ciphers.
(2) The age.
(3) There is no index, but the table of contents is detailed.
I expect to use a few of these ciphers in introductory computing classes (think CS1, CS2) in the near future--the explanations are clear enough for undergrads with no real background and minimal interest.
15 of 16 people found the following review helpful
Good basic codes, great for beginners.
28 Sep 2002
Format:Paperback|Amazon Verified Purchase
This is a great reference of basic codes. Excellent explanations, examples. Don't expect anything too intense, and you won't be disappointed.
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