Breaking Secret Codes
Author: Jillian Gregory
Publisher: Capstone
Published: 2010
Total Pages: 33
ISBN-13: 1429645687
DOWNLOAD EBOOK"Discusses different methods for breaking secret codes"--Provided by publisher.
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Speaking Secret Codes
Author: Sheri Bell-Rehwoldt
Publisher: Capstone
Published: 2010-07
Total Pages: 18
ISBN-13: 1429645695
DOWNLOAD EBOOK"Discusses different methods for speaking secret codes"--Provided by publisher.
Secrets of Making and Breaking Codes
Author: Hamilton Nickels
Publisher: Skyhorse
Published: 2014-07-15
Total Pages: 144
ISBN-13: 9781629142067
DOWNLOAD EBOOKEver since humans first began to communicate, we’ve had secrets to keep — secrets of state, war, business, or the heart. From the moment the first secret message was sent, others were busy trying to decipher it. By rearranging, substituting, or transposing symbols, any message can be encoded or decoded — if you know how. Secrets of Making and Breaking Codes is a practical field manual designed to teach you the basic mechanics of enciphering and deciphering communications. The author has used his extensive knowledge of and experience in electronic communications and languages — as well as his decades of fascination with secret codes — to demystify the field of cryptology. Hamilton Nickels uses plain, uncomplicated English and simple, workable systems that rely on neither advanced mathematics, nor on ethereal philosophies. This is the only hands-on guide to both the simplest cipher schemes — that need little more than scratch paper and a pencil to crack — as well as more sophisticated codes that use one-time code books, pocket calculators, and the most advanced computer-based systems used by the military and diplomatic corps of most governments. Letting the wrong eyes see a secret message can often make the difference between victory and defeat, success and failure, life and death. Secrets of Making and Breaking Codes will make mastering codes easier.
Break the Code
Author: Bud Johnson
Publisher: Courier Corporation
Published: 2013-05-22
Total Pages: 86
ISBN-13: 0486291464
DOWNLOAD EBOOKSimply and clearly written book, filled with cartoons and easy-to-follow instructions, tells youngsters 8 and up how to break 6 different types of coded messages. Examples and solutions.
The Cryptoclub
Author: Janet Beissinger
Publisher: CRC Press
Published: 2018-10-08
Total Pages: 213
ISBN-13: 1498747760
DOWNLOAD EBOOKJoin the Cryptokids as they apply basic mathematics to make and break secret codes. This book has many hands-on activities that have been tested in both classrooms and informal settings. Classic coding methods are discussed, such as Caesar, substitution, Vigenère, and multiplicative ciphers as well as the modern RSA. Math topics covered include: - Addition and Subtraction with, negative numbers, decimals, and percentages - Factorization - Modular Arithmetic - Exponentiation - Prime Numbers - Frequency Analysis. The accompanying workbook, The Cryptoclub Workbook: Using Mathematics to Make and Break Secret Codes provides students with problems related to each section to help them master the concepts introduced throughout the book. A PDF version of the workbook is available at no charge on the download tab, a printed workbook is available for $19.95 (K00701). The teacher manual can be requested from the publisher by contacting the Academic Sales Manager, Susie Carlisle
The Code Book: The Secrets Behind Codebreaking
Author: Simon Singh
Publisher: Delacorte Press
Published: 2002-05-14
Total Pages: 274
ISBN-13: 0375890122
DOWNLOAD EBOOK"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
Codes, Ciphers, Secrets and Cryptic Communication
Author: Fred B. Wrixon
Publisher: Black Dog & Leventhal Pub
Published: 2005
Total Pages: 704
ISBN-13: 9781579124854
DOWNLOAD EBOOKCovert communications have won or lost wars, exposed political intrigue, disguised secret religions and societies, and secured financial transactions. This immensely readable world history of clandestine communication—finally in paperback—includes illustrations, diagrams, and puzzles that instruct readers how to become amateur cryptographers. It’s the last word on secret languages!
Cracking Codes with Python
Author: Al Sweigart
Publisher: No Starch Press
Published: 2018-01-23
Total Pages: 419
ISBN-13: 1593278225
DOWNLOAD EBOOKLearn how to program in Python while making and breaking ciphers—algorithms used to create and send secret messages! After a crash course in Python programming basics, you’ll learn to make, test, and hack programs that encrypt text with classical ciphers like the transposition cipher and Vigenère cipher. You’ll begin with simple programs for the reverse and Caesar ciphers and then work your way up to public key cryptography, the type of encryption used to secure today’s online transactions, including digital signatures, email, and Bitcoin. Each program includes the full code and a line-by-line explanation of how things work. By the end of the book, you’ll have learned how to code in Python and you’ll have the clever programs to prove it! You’ll also learn how to: - Combine loops, variables, and flow control statements into real working programs - Use dictionary files to instantly detect whether decrypted messages are valid English or gibberish - Create test programs to make sure that your code encrypts and decrypts correctly - Code (and hack!) a working example of the affine cipher, which uses modular arithmetic to encrypt a message - Break ciphers with techniques such as brute-force and frequency analysis There’s no better way to learn to code than to play with real programs. Cracking Codes with Python makes the learning fun!
Over 50 Secret Codes
Author: Emily Bone
Publisher: Usborne Books
Published: 2024-04-02
Total Pages: 0
ISBN-13: 9781805072119
DOWNLOAD EBOOKCode-cracking skills can be put to the test in this entertaining book which teaches children how to write and decode secret messages. Includes Semaphore and Morse code, the Grid code used in the American Civil War, Egyptian hieroglyphics, number replacement and alphabet switching codes and more. Each page features a different type of code, with an explanation of how it works and a practice code to crack. All answers are available at the back of the book.
Lorenz
Author: Jerry Roberts
Publisher: The History Press
Published: 2017-03-02
Total Pages: 300
ISBN-13: 0750982047
DOWNLOAD EBOOKThe breaking of the Enigma machine is one of the most heroic stories of the Second World War and highlights the crucial work of the codebreakers of Bletchley Park, which prevented Britain's certain defeat in 1941. But there was another German cipher machine, used by Hitler himself to convey messages to his top generals in the field. A machine more complex and secure than Enigma. A machine that could never be broken. For sixty years, no one knew about Lorenz or 'Tunny', or the determined group of men who finally broke the code and thus changed the course of the war. Many of them went to their deaths without anyone knowing of their achievements. Here, for the first time, senior codebreaker Captain Jerry Roberts tells the complete story of this extraordinary feat of intellect and of his struggle to get his wartime colleagues the recognition they deserve. The work carried out at Bletchley Park during the war to partially automate the process of breaking Lorenz, which had previously been done entirely by hand, was groundbreaking and is recognised as having kick-started the modern computer age.
