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Author : Rachael L. Thomas
Publisher : Unknown
Page : 128 pages
File Size : 48,7 Mb
Release : 2022
Category : Ciphers
ISBN : 1728433649
"Cryptology is the art and science of secret communication, and its purpose is to protect precious information and keep people safe. Learn about its building blocks: ciphers, codes, and keys"--
Author : Rachael L. Thomas
Publisher : Unknown
Page : 128 pages
File Size : 49,5 Mb
Release : 2022
Category : Ciphers
ISBN : 1728433649
"Cryptology is the art and science of secret communication, and its purpose is to protect precious information and keep people safe. Learn about its building blocks: ciphers, codes, and keys"--
Author : Alexander D'Agapeyeff
Publisher : Read Books Ltd
Page : 153 pages
File Size : 40,6 Mb
Release : 2016-08-26
Category : Computers
ISBN : 9781473350915
This 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.
Author : Rachael L. Thomas
Publisher : Lerner Publications ™
Page : 32 pages
File Size : 47,8 Mb
Release : 2021-08-01
Category : Juvenile Nonfiction
ISBN : 9781728433639
Dive into the secret history of . . . secrets! Cryptology is the art and science of secret communication, and its purpose is to protect precious information and keep people safe. Learn about its building blocks: ciphers, codes, and keys. People have wanted to hide messages and important information for millennia. Read how history's coolest codes and ciphers have progressed from belts and sticks to rotating disks and supercomputers. Use your cryptology skills to design your own secret cipher. And learn about the smart people who built and broke the strongest secret systems.
Author : R. F. Churchhouse
Publisher : Cambridge University Press
Page : 254 pages
File Size : 40,6 Mb
Release : 2002
Category : Business & Economics
ISBN : 0521008905
Publisher Description
Author : Fletcher Pratt
Publisher : Unknown
Page : 0 pages
File Size : 41,7 Mb
Release : 1939
Category : Ciphers
ISBN : 0894122614
Author : John Redden
Publisher : Lulu.com
Page : 58 pages
File Size : 41,7 Mb
Release : 2018-03-12
Category : Education
ISBN : 9781387346080
The 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 Vigen re 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.
Author : Anon
Publisher : Read Books Ltd
Page : 277 pages
File Size : 41,9 Mb
Release : 2020-08-06
Category : History
ISBN : 9781528764810
Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.
Author : Fletcher Pratt
Publisher : Unknown
Page : 292 pages
File Size : 52,9 Mb
Release : 1942
Category : Ciphers
ISBN : STANFORD:36105002110091
Author : Fred B. Wrixon
Publisher : Unknown
Page : 284 pages
File Size : 40,9 Mb
Release : 1992
Category : Business & Economics
ISBN : STANFORD:36105000420328
An alphabetical exploration of the world of codes and ciphers and significant individuals involved in that field.
Author : Simon Singh
Publisher : Delacorte Press
Page : 272 pages
File Size : 52,8 Mb
Release : 2002-05-14
Category : Young Adult Nonfiction
ISBN : 9780375890123
"As gripping as a good thriller." --The Washington Post Unpack the science of secrecy and discover the methods behind cryptography--the encoding and decoding of information--in this clear and easy-to-understand young adult adaptation of the national bestseller that's perfect for this age of WikiLeaks, the Sony hack, and other events that reveal the extent to which our technology is never quite as secure as we want to believe. Coders and codebreakers alike will be fascinated by history's most mesmerizing stories of intrigue and cunning--from Julius Caesar and his Caeser cipher to the Allies' use of the Enigma machine to decode German messages during World War II. Accessible, compelling, and timely, The Code Book is sure to make readers see the past--and the future--in a whole new way. "Singh's power of explaining complex ideas is as dazzling as ever." --The Guardian
Author : Paul B. Janeczko
Publisher : Candlewick Press
Page : 148 pages
File Size : 45,8 Mb
Release : 2006-04-11
Category : Juvenile Nonfiction
ISBN : 0763629723
Presents history, trivia, and code-breaking tales in a guide book to the world of secret writing that includes examples of a variety of codes and ciphers.
Author : George Lasry
Publisher : kassel university press GmbH
Page : 249 pages
File Size : 42,9 Mb
Release : 2018
Category : Electronic
ISBN : 9783737604581
Cryptography, the art and science of creating secret codes, and cryptanalysis, the art and science of breaking secret codes, underwent a similar and parallel course during history. Both fields evolved from manual encryption methods and manual codebreaking techniques, to cipher machines and codebreaking machines in the first half of the 20th century, and finally to computerbased encryption and cryptanalysis from the second half of the 20th century. However, despite the advent of modern computing technology, some of the more challenging classical cipher systems and machines have not yet been successfully cryptanalyzed. For others, cryptanalytic methods exist, but only for special and advantageous cases, such as when large amounts of ciphertext are available. Starting from the 1990s, local search metaheuristics such as hill climbing, genetic algorithms, and simulated annealing have been employed, and in some cases, successfully, for the cryptanalysis of several classical ciphers. In most cases, however, results were mixed, and the application of such methods rather limited in their scope and performance. In this work, a robust framework and methodology for the cryptanalysis of classical ciphers using local search metaheuristics, mainly hill climbing and simulated annealing, is described. In an extensive set of case studies conducted as part of this research, this new methodology has been validated and demonstrated as highly effective for the cryptanalysis of several challenging cipher systems and machines, which could not be effectively cryptanalyzed before, and with drastic improvements compared to previously published methods. This work also led to the decipherment of original encrypted messages from WWI, and to the solution, for the first time, of several public cryptographic challenges.
Author : Helen F. Gaines
Publisher : Courier Corporation
Page : 256 pages
File Size : 55,8 Mb
Release : 2014-11-18
Category : Games & Activities
ISBN : 9780486800592
Thorough, systematic introduction to serious cryptography, especially strong in modern forms of cipher solution used by experts. Simple and advanced methods. 166 specimens to solve — with solutions.
Author : Fred B. Wrixon
Publisher : Random House Value Publishing
Page : 280 pages
File Size : 52,6 Mb
Release : 1989
Category : Ciphers
ISBN : PSU:000017870764
Perfect for word lovers and puzzlers, this comprehensive, illustrated volume includes Indian sign language, Morse code, Jefferson's cipher wheel and more, presented in an informative and historical manner.