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Author : Robert Reynard
Publisher : Smith & Daniel
Page : 124 pages
File Size : 47,8 Mb
Release : 1999
Category : Language Arts & Disciplines
ISBN : 9781889668130
Author : Robert Reynard
Publisher : Smith & Daniel
Page : 129 pages
File Size : 48,5 Mb
Release : 1997
Category : Cryptography
ISBN : 9781889668062
Author : Robert Reynard
Publisher : Smith & Daniel
Page : 98 pages
File Size : 43,6 Mb
Release : 1996
Category : Cryptography
ISBN : 9781889668000
Author : H L Dennis
Publisher : Hachette UK
Page : 44 pages
File Size : 46,9 Mb
Release : 2013-05-02
Category : Juvenile Fiction
ISBN : 9781444912746
Introducing an extraordinary series with real codes, real mysteries and real danger. A Da Vinci Code for kids ... Imagine the chance to solve the Voynich Manuscript - a puzzle that has truly defeated adults for centuries. It's an ancient manuscript no one has ever been able to decipher. And there are Rules that say it is forbidden to even try to solve it. A secret hidden for centuries. But Brodie Bray likes a challenge, and when she receives a coded message through the post her life changes for ever. She's chosen for a secret team working to crack this most complicated code in the world to uncover the secret it hides. But it's a code that has driven people mad trying to solve it. Together with her new friends, Brodie must break the rules to break the code, at every turn facing terrible danger. For someone is watching them - and will even kill to stop them. In this original new series, three children tackle real unsolved mysteries and struggle with real unbroken codes to get to the hidden truth. Enter the world of the Secret Breakers at http://hldennis.com/ Teachers' resources and full reading guide available here: http://hldennis.com/docs/HDreadingguide.pdf
Author : David Dufty
Publisher : Unknown
Page : 0 pages
File Size : 44,7 Mb
Release : 2023-02-28
Category : Electronic
ISBN : 176138032X
Central Bureau - Australia's own large and sophisticated intelligence network, built from scratch. It was this group of mathematicians, code-breakers, and radio experts who intercepted the travel plans of the architect of the Pearl Harbor attack, Admiral Yamamoto, leading to his ambush and death. Australian signals intelligence also played a vital role in the battles of the Coral Sea, Milne Bay, Hollandia, and many others. General Douglas MacArthur, the supreme commander of the local Allied forces, went so far as to insist that the men of Central Bureau accompany him on his counter-attack in the Pacific. After the war, the US sought to give these non-combatants the highest awards possible - honours that were suppressed by the Australian government in their need for secrecy. A groundbreaking work of military history, The Secret Code-breakers of Central Bureau gives these talented and dedicated individuals their due at last. It is a rich account of the shadowy side of military strength and of the men and women whose work was, in the words of the US navy, of 'immeasurable importance in the successfulmprosecution' of the Pacific War. 'Who knew? This enthralling study tells a deeply human story. The men and women who gave our troops a significant edge in the fight against the Japanese are the genuine heroes in this engaging and exciting book.' -Michael McKernan, author of The Strength of a Nation and When This Thing Happened 'This is history and military strategy written at its most engaging.' -Waikato Times 'A delightfully and thoroughly engaging story of the emergence of the Australian contribution to the signals and radio interception intelligence ... Dufty's writing style is light and easy to read, reminiscent of other contemporary historical narratives that tell a series of stories, most notably the emphasis of the human story associated with these experiences.' -Rhys Ball, NZ International Review
Author : Happy Bear Publications
Publisher : Unknown
Page : 58 pages
File Size : 52,7 Mb
Release : 2020-07-27
Category : Electronic
ISBN : 9798669942731
This book contains 25 secret codes for your child to crack! Suitable for ages 6 - 10, this book contains clues and answers as well as space to create their own codes. Flip the book back to front to find the clues! Your child will soon be a code cracking and code writing extraordinaire! The book follows Charlie as they get into different situations and you will have to crack the code to answer the questions. This book contains: Crpytograms Morse Code Pigpen Cipher Secret Pirates Code And many more codes to crack! Have fun cracking the codes!
Author : Liza Mundy
Publisher : Hachette Books
Page : 524 pages
File Size : 42,6 Mb
Release : 2017-10-10
Category : History
ISBN : 9780316352550
The award-winning New York Times bestseller about the American women who secretly served as codebreakers during World War II--a "prodigiously researched and engrossing" (New York Times) book that "shines a light on a hidden chapter of American history" (Denver Post). Recruited by the U.S. Army and Navy from small towns and elite colleges, more than ten thousand women served as codebreakers during World War II. While their brothers and boyfriends took up arms, these women moved to Washington and learned the meticulous work of code-breaking. Their efforts shortened the war, saved countless lives, and gave them access to careers previously denied to them. A strict vow of secrecy nearly erased their efforts from history; now, through dazzling research and interviews with surviving code girls, bestselling author Liza Mundy brings to life this riveting and vital story of American courage, service, and scientific accomplishment.
Author : Sara Ackerman
Publisher : MIRA
Page : 367 pages
File Size : 49,5 Mb
Release : 2022-08-02
Category : Fiction
ISBN : 9780369720733
A brilliant female codebreaker. An “unbreakable” Japanese naval code. A pilot on a top-secret mission that could change the course of WWII. The Codebreaker's Secret is a dazzling story of love and intrigue set during America’s darkest hour. 1943. As war in the Pacific rages on, Isabel Cooper and her codebreaker colleagues huddle in “the dungeon” at Station HYPO in Pearl Harbor, deciphering secrets plucked from the airwaves in a race to bring down the enemy. Isabel has only one wish: to avenge her brother’s death. But she soon finds life has other plans when she meets his best friend, a hotshot pilot with secrets of his own. 1965. Fledgling journalist Lu Freitas comes home to Hawai'i to cover the grand opening of the glamorous Mauna Kea Beach Hotel, Rockefeller's newest and grandest project. When a high-profile guest goes missing, Lu forms an unlikely alliance with an intimidating veteran photographer to unravel the mystery. The two make a shocking discovery that stirs up memories and uncovers an explosive secret from the war days. A secret that only a codebreaker can crack. "Sara Ackerman never disappoints!" —Kate Quinn, New York Times bestselling author of The Rose Code "Brilliantly written with a mystery that will keep you reading late into the night. . . . A fabulous read that makes me want to drop everything and travel to Hawaii!" —Madeline Martin, New York Times bestselling author of The Last Bookshop in London "Beautifully structured and well-told with authentic historical detail . . . another top historical novel by Ackerman." —Booklist (starred) "Thoughtful, romantic and ultimately hopeful, The Codebreaker's Secret is a riveting story of intrigue and love in wartime"—Shelf Awareness
Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 40,5 Mb
Release : 2020
Category : Electronic
ISBN : 0993409032
Author : Laurie Wallmark
Publisher : Abrams
Page : 48 pages
File Size : 51,7 Mb
Release : 2021-03-02
Category : Juvenile Nonfiction
ISBN : 9781683357049
Decode the story of Elizebeth Friedman, the cryptologist who took down gangsters and Nazi spies In this picture book biography, young readers will learn all about Elizebeth Friedman (1892–1980), a brilliant American code breaker who smashed Nazi spy rings, took down gangsters, and created the CIA's first cryptology unit. Her story came to light when her secret papers were finally declassified in 2015. From thwarting notorious rumrunners with only paper and pencil to “counter-spying into the minds and activities of” Nazis, Elizebeth held a pivotal role in the early days of US cryptology. No code was too challenging for her to crack, and Elizebeth’s work undoubtedly saved thousands of lives. Extensive back matter includes explanations of codes and ciphers, further information on cryptology, a bibliography, a timeline of Elizebeth’s life, plus secret messages for young readers to decode.
Author : Jan Slimming
Publisher : Casemate Publishers
Page : 431 pages
File Size : 47,6 Mb
Release : 2021-03-03
Category : Biography & Autobiography
ISBN : 9781526784124
“What would it be like to keep a secret for fifty years? Never telling your parents, your children, or even your husband?” Codebreaker Girls: A Secret Life at Bletchley Park tells the true story of Daisy Lawrence. Following extensive research, the author uses snippets of information, unpublished photographs and her own recollections to describe scenes from her mother’s poor, but happy, upbringing in London, and the disruptions caused by the outbreak of the Second World War to a young woman in the prime of her life. The author asks why, and how, Daisy was chosen to work at the Government war station, as well as the clandestine operation she experienced with others, deep in the British countryside, during a time when the effects of the war were felt by everyone. In addition, the author examines her mother’s personal emotions and relationships as she searches for her young fiancée, who was missing in action overseas. The three years at Bletchley Park were Daisy’s university, but having closed the door in 1945 on her hidden role of national importance — dealing with Germany, Italy and Japan — this significant period in her life was camouflaged for decades in the filing cabinet of her mind. Now her story comes alive with descriptions, original letters, documents, newspaper cuttings and unique photographs, together with a rare and powerful account of what happened to her after the war. “Here’s a beauty of a history of some of the codebreaking girls who helped save us during the second world war. This one’s about Daisy Lawrence’s extraordinary life as a poor girl brought up in London and then chosen for top secret work at Bletchley Park. Reads like fiction.” —Books Monthly
Author : John Redden
Publisher : Lulu.com
Page : 58 pages
File Size : 52,5 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 : Emily Bone
Publisher : Usborne Books
Page : 0 pages
File Size : 45,6 Mb
Release : 2024-04-02
Category : Juvenile Nonfiction
ISBN : 1805072110
Code-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.
Author : Rachael L. Thomas
Publisher : Lerner Publications ™
Page : 32 pages
File Size : 50,8 Mb
Release : 2021-08-01
Category : Juvenile Nonfiction
ISBN : 9781728433691
Imagine having a job that has been around for thousands of years. People called cryptologists have been making—and breaking—codes almost as long as humans have written things down. Read about the historical code makers and breakers who protected their countries by coding and decoding messages for their governments, and the modern cryptologists who keep emails, texts, and online purchases secure.
Author : Stephen Budiansky
Publisher : Knopf
Page : 433 pages
File Size : 45,5 Mb
Release : 2016
Category : Cryptography
ISBN : 9780385352666
In Code Warriors, Stephen Budiansky--a longtime expert in cryptology--tells the fascinating story of how NSA came to be, from its roots in World War II through the fall of the Berlin Wall. Along the way, he guides us through the fascinating challenges faced by cryptanalysts, and how they broke some of the most complicated codes of the twentieth century. With access to new documents, Budiansky shows where the agency succeeded and failed during the Cold War, but his account also offers crucial perspective for assessing NSA today in the wake of the Edward Snowden revelations. Budiansky shows how NSA's obsession with recording every bit of data and decoding every signal is far from a new development; throughout its history the depth and breadth of the agency's reach has resulted in both remarkable successes and destructive failures.