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Disappearing Cryptography: Being and Nothingness on the Net [Englisch] [Taschenbuch]

Peter Wayner
2.7 von 5 Sternen  Alle Rezensionen anzeigen (3 Kundenrezensionen)

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Produktinformation

  • Taschenbuch: 295 Seiten
  • Verlag: Academic Press Inc (Mai 1996)
  • Sprache: Englisch
  • ISBN-10: 0127386718
  • ISBN-13: 978-0127386713
  • Größe und/oder Gewicht: 23,4 x 18,5 x 2 cm
  • Durchschnittliche Kundenbewertung: 2.7 von 5 Sternen  Alle Rezensionen anzeigen (3 Kundenrezensionen)
  • Amazon Bestseller-Rang: Nr. 2.004.353 in Englische Bücher (Siehe Top 100 in Englische Bücher)
  • Komplettes Inhaltsverzeichnis ansehen

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Peter Wayner
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Produktbeschreibungen

Amazon.com

Disappearing Cryptography, by Peter Wayner, asks what happens after you use encryption to encode your data. After all, encryption doesn't protect you from a jammed transmission, a diverted e-mail message, or an erased file. The gobbledygook that is encrypted data often attracts attention. But there are ways to hide data so that no one knows it's there. Wayner carefully walks the reader through the fundamentals of encryption, error correction, secret sharing, compression, and grammar. Each technique builds on the next until you are able to pull off some impressive tricks using these technologies. You can secret your journals in a picture of your dog or encode your financials as a baseball announcer's monologue.

Each chapter begins with a clever anecdote or game that introduces the subject (sometimes elliptically, which is only appropriate for a book on data hiding). A plain-language description of the technology follows, and each chapter finishes with mathematically rigorous proofs and solutions. If you are a newcomer, you will enjoy the new ideas, though you will have to trust that the technology works. If you understand some of what's going on, you will appreciate the new information and applications, as well as the in-depth descriptions of the technologies. And if you are an expert, you will still certainly find something to take away from Wayner's clever way of integrating ideas, which at times recalls Douglas R. Hofstedter's Godel, Escher, Bach: An Eternal Golden Braid.

Kurzbeschreibung

This book deals with how information can disappear so that no one knows of its existence. Convential cryptography merely scambles information into an impenetrable block. This book describes how data can be hidden in the background noise of pictures, sound recording or even bad poetry.Disappearing Cryptography is a collection of mathematical tricks and computational sleights of hand that explore the very foundations of information.

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Die hilfreichsten Kundenrezensionen
Von S. Brown
Format:Taschenbuch
The book provides a basic foundation for the field of steganography. Steganography essentially conceals a message within another context as opposed to cryptography which conceals the content of the messages through mathematical manipulation.

Portions of the book are interesting and informative. For persons new to cryptography, this text will provide good food-for-thought. The concise descriptions of parity bits, bit math, and compression algorithms are very interesting.

The treatment of steganography is good but does not really go into implementation details. That is, the topic is discussed conceptually.

The book was published in 1996. The dated approach is starting to show in the text. In all, it is still an interesting read.

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Von Ein Kunde
Format:Taschenbuch
This book presents a novel conceptual primer on steganography but sorely disappoints in the areas of cryptography and overall applicable code.

The book has a number of shortcomings which prevent it from receiving a good review.

-the author's artificial examples on English grammar construction create sentences that are likely to be repetitious, inconsistent, and implausible if read aloud. The author lacks the sources and dictionary to back up his premise these programmatically constructed sentences can sound okay when next to each other. He passes an advanced grammar check but doesn't pass a child's reading of the fake text. -the discussions of RSA and DES had great analogies but the detailed explanations were poor. -the code is all in Pascal (I expect C code available via a URL. I don't have any use for *.p Pascal code!) -the author goes off on tangents about reversible and fault-tolerant computing. The composition of the book is a mixture of a good steganography text mixed in with a mediocre cryptography discussion and an even more mediocre computer architecture presentation. -The discussions of error-correcting codes were theoretically interesting but the author is consistently short of USABLE code examples so that we can experiment with his ideas.

War diese Rezension für Sie hilfreich?
Format:Taschenbuch
This book is about concealing the very existence of your messages where cryptography is about obscuring the content of them alone. The two are not quite the same thing, as you'll find out within.
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