A Course in Number Theory and Cryptography (Graduate Texts in Mathematics) | 
 enlarge | Author: Neal Koblitz
Publisher: Springer
Category: Book
List Price: $59.95
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Rating:  14 reviews
Sales Rank: 696063
Media: Hardcover
Edition: 2nd
Pages: 235
Number Of Items: 1
Shipping Weight (lbs): 0.8
Dimensions (in): 9.3 x 6.3 x 0.7
ISBN: 0387942939
Dewey Decimal Number: 512.7
EAN: 9780387942933
Publication Date: September 2, 1994
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Condition: Shows some signs of wear, and may have some markings on the inside. 100% Money Back Guarantee.
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Product Description
The purpose of this book is to introduce the reader to arithmetic topics, both ancient and modern, that have been at the center of interest in applications of number theory, particularly in cryptography. No background in algebra or number theory is assumed, and the book begins with a discussion of the basic number theory that is needed. The approach taken is algorithmic, emphasizing estimates of the efficiency of the techniques that arise from the theory. A special feature is the inclusion of recent application of the theory of elliptic curves. Extensive exercises and careful answers have been included in all of the chapters. Because number theory and cryptography are fast-moving fields, this new edition contains substantial revisions and updated references.
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| Customer Reviews: Read 9 more reviews...
 Get your concepts cleared!! April 25, 2002
qubit (Los Angeles, CA)
7 out of 8 found this review helpful
This is a truly lovely book written by Koblitz. I agree with some of the comments made by earlier reviewers that the content might be outdated, however, it is important to realize that this book is there for building one's foundation in number theory and cryptography. After one is done doing that, one can go and read the current literature in cryptography. I have used this book for a graduate crypto course at USC, and I think it really helped me a lot. This book is a great reference and a great buy.
Excellent book for self study January 6, 2004
PST (Eislingen Deutschland)
3 out of 3 found this review helpful
This is an excellent book fot those, who are interested in the theoretical background of cryptography. It was also my first book in number theory, and I had no trouble following most of the text ( except the chapter on Elliptic curves, which -as I realize now- IS difficult)Highly recommendable! A pleasant surprise is, that there are virtually no typos.
A serius text in cryptography. No games, no screenshots. March 16, 1999
gmunoz@interware.com.mx (Mexico, D. F.)
12 out of 16 found this review helpful
Neal Koblitz. The name says all. He is the cocreator of the elliptic curve cryptosystems. If you have studied 1 year of college algebra (Herstein or Fraleigh) and you want to learn cryptography mathematically, this is THE reference. If you are an engineer and/or just want to know the practical (and as always, superficial) issues of the subject, skip it.
Outstanding presentations March 29, 2004
wiredweird (Earth, or somewhere nearby)
2 out of 2 found this review helpful
This book is an outstanding introduction to cryptographic techniques and algorithms Although it's labelled as a "graduate text in mathematics", most of it should be accessible to anyone who knows a little linear algebra. For readers just interested in the how-to of the algorithms, not even that is needed. Koblitz does a thorough job of leading up to each algorithm and proving its formal properties. He also presents the algorithms themselves, unencumbered by denser material of interest to mathematicians.The book covers a variety of topics - public-key encryption, primality testing, factoring, and cryptographic protocols. It introduces zero-knowledge proofs and blind transfer, techniques that offer real hope of personal privacy in a world where data transfer is mandatory. I was a little disappointed by the chapters on elliptic cryptography, however. I hoped that Koblitz would bring is explanatory powers to bear on the algorithms. Somehow, I never quite connected with his descriptions of elliptic curves - perhaps I'm just thick, or perhaps a bit more introductory material would have helped. The rest of the book is a very fine example of clear, readable math writing. Its clarity its range of topics earn it a place with anyone interested in cryptography, factoring, and prime numbers.
Essential for your secrets November 1, 2006
J. MOLDOVAN
How Neal Koblitz manages to squeeze the amount of material he presents into this slim volume is a miracle of nature. It even includes what most authors of graduate works leave out as a matter of course: answers to exercises. More amazing still is that far from being terse and unreadable the text is a delight.
My advice to anyone interested in this field is to have this book by their side at all times. Then if the need arises to find out what makes an algorithm tick or to refresh one's mind about a well known concept it's just the flick of a page away.
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