Codes and Ciphers
Author: R. F. Churchhouse
Publisher: Cambridge University Press
Published: 2002
Total Pages: 254
ISBN-13: 9780521008907
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Codes, Ciphers and Secret Writing
Author: Martin Gardner
Publisher: Courier Corporation
Published: 1984-01-01
Total Pages: 100
ISBN-13: 9780486247618
DOWNLOAD EBOOKExplains various methods used in cryptography and presents examples to help readers in breaking secret codes
Secret Code Book: Substitution Ciphers
Author: John Redden
Publisher: Lulu.com
Published: 2017-09-02
Total Pages: 58
ISBN-13: 1387346083
DOWNLOAD EBOOKThe Secret Code Book is a short introduction to substitution ciphers. The chapters ease young readers into the concept of rotation ciphers and work their way up to the Vigenère cipher. Along the way, readers will also learn about geometric approaches to secret codes such as the Pigpen cipher. As a bonus, there is a brief description of frequency analysis and how it is used to crack secret codes. frper gpbqr obbx In addition, this book actively challenges readers with practice missions where answers are listed in the back. Also, there is a cut-out rotation template that is provided to make your very own cipher disk! After reading this book, you will have all the basic tools needed to create secret messages.
Mathematical Ciphers
Author: Anne L. Young
Publisher: American Mathematical Soc.
Published: 2006
Total Pages: 170
ISBN-13: 0821837303
DOWNLOAD EBOOK"A cipher is a scheme for creating coded messages for the secure exchange of information. Throughout history, many different coding schemes have been devised. One of the oldest and simplest mathematical systems was used by Julius Caesar. This is where Mathematical Ciphers begins. Building on that simple system, Young moves on to more complicated schemes, ultimately ending with the RSA cipher, which is used to provide security for the Internet. This book is structured differently from most mathematics texts. It does not begin with a mathematical topic, but rather with a cipher. The mathematics is developed as it is needed; the applications motivate the mathematics. As is typical in mathematics textbooks, most chapters end with exercises. Many of these problems are similar to solved examples and are designed to assist the reader in mastering the basic material. A few of the exercises are one-of-a-kind, intended to challenge the interested reader. Implementing encryption schemes is considerably easier with the use of the computer. For all the ciphers introduced in this book, JavaScript programs are available from the Web. In addition to developing various encryption schemes, this book also introduces the reader to number theory. Here, the study of integers and their properties is placed in the exciting and modern context of cryptology. Mathematical Ciphers can be used as a textbook for an introductory course in mathematics for all majors. The only prerequisite is high school mathematics."--Jacket.
Stream Ciphers and Number Theory
Author: T.W. Cusick
Publisher: Elsevier
Published: 1998-04-20
Total Pages: 446
ISBN-13: 0080541844
DOWNLOAD EBOOKThis book is almost entirely concerned with stream ciphers, concentrating on a particular mathematical model for such ciphers which are called additive natural stream ciphers. These ciphers use a natural sequence generator to produce a periodic keystream. Full definitions of these concepts are given in Chapter 2. This book focuses on keystream sequences which can be analysed using number theory. It turns out that a great deal of information can be deducted about the cryptographic properties of many classes of sequences by applying the terminology and theorems of number theory. These connections can be explicitly made by describing three kinds of bridges between stream ciphering problems and number theory problems. A detailed summary of these ideas is given in the introductory Chapter 1. Many results in the book are new, and over seventy percent of these results described in this book are based on recent research results.
Stream Ciphers and Number Theory
Author: Thomas W. Cusick
Publisher: Elsevier
Published: 2004-02-17
Total Pages: 493
ISBN-13: 0080541836
DOWNLOAD EBOOKThis is the unique book on cross-fertilisations between stream ciphers and number theory. It systematically and comprehensively covers known connections between the two areas that are available only in research papers. Some parts of this book consist of new research results that are not available elsewhere. In addition to exercises, over thirty research problems are presented in this book. In this revised edition almost every chapter was updated, and some chapters were completely rewritten. It is useful as a textbook for a graduate course on the subject, as well as a reference book for researchers in related fields. · Unique book on interactions of stream ciphers and number theory. · Research monograph with many results not available elsewhere. · A revised edition with the most recent advances in this subject. · Over thirty research problems for stimulating interactions between the two areas. · Written by leading researchers in stream ciphers and number theory.
Codes and Ciphers - A History of Cryptography
Author: Alexander D'Agapeyeff
Publisher: Read Books Ltd
Published: 2016-08-26
Total Pages: 153
ISBN-13: 1473350913
DOWNLOAD EBOOKThis vintage book contains Alexander D’Agapeyeff’s famous 1939 work, Codes and Ciphers - A History of Cryptography. Cryptography is the employment of codes and ciphers to protect secrets, and it has a long and interesting history. This fantastic volume offers a detailed history of cryptography from ancient times to modernity, written by the Russian-born English cryptographer, Alexander D'Agapeyeff. The contents include: - The beginnings of Cryptography - From the Middle Ages Onwards - Signals, Signs, and Secret Languages - Commercial Codes - Military Codes and Ciphers - Types of Codes and Ciphers - Methods of Deciphering Many antiquarian texts such as this, especially those dating back to the 1900s and before, are increasingly hard to come by and expensive, and it is with this in mind that we are republishing this book now in an affordable, modern, high quality edition. It comes complete with a specially commissioned new biography of the author.
Ciphers, Codes, Algorithms, and Keys
Author: Laura La Bella
Publisher: The Rosen Publishing Group, Inc
Published: 2016-12-15
Total Pages: 66
ISBN-13: 1508173079
DOWNLOAD EBOOKAs handy and useful as it is to communicate with smartphones, email, and texts, not to mention paying bills and doing banking online, all these conveniences mean that a great deal of our sensitive, personal information needs to be protected and kept secret. Readers can anticipate an intriguing overview of the ciphers, codes, algorithms, and keys used in real-life situations to keep peoples’ information safe and secure. Examples of how to use some types of cryptography will challenge and intrigue.
The Adventure of the Dancing Men and Other Sherlock Holmes Stories
Author: Sir Arthur Conan Doyle
Publisher: Courier Corporation
Published: 2012-02-29
Total Pages: 83
ISBN-13: 0486110915
DOWNLOAD EBOOKTitle story plus three others featuring the peerless sleuth and his faithful sidekick: "The Adventure of the Dying Detective," "The Musgrave Ritual" and "The Adventure of the Bruce-Partington Plans."
Codes, Ciphers and Spies
Author: John F. Dooley
Publisher: Springer
Published: 2016-03-31
Total Pages: 284
ISBN-13: 3319294156
DOWNLOAD EBOOKWhen the United States declared war on Germany in April 1917, it was woefully unprepared to wage a modern war. Whereas their European counterparts already had three years of experience in using code and cipher systems in the war, American cryptologists had to help in the building of a military intelligence unit from scratch. This book relates the personal experiences of one such character, providing a uniquely American perspective on the Great War. It is a story of spies, coded letters, plots to blow up ships and munitions plants, secret inks, arms smuggling, treason, and desperate battlefield messages. Yet it all begins with a college English professor and Chaucer scholar named John Mathews Manly. In 1927, John Manly wrote a series of articles on his service in the Code and Cipher Section (MI-8) of the U.S. Army’s Military Intelligence Division (MID) during World War I. Published here for the first time, enhanced with references and annotations for additional context, these articles form the basis of an exciting exploration of American military intelligence and counter-espionage in 1917-1918. Illustrating the thoughts of prisoners of war, draftees, German spies, and ordinary Americans with secrets to hide, the messages deciphered by Manly provide a fascinating insight into the state of mind of a nation at war.
