cryptography

"Amidst a complicated history of mistreatment by and distrust of the American government, the Navajo people--especially code talkers--helped the Allies win World War II"--Provided by publisher.

"A trip to a museum to learn about ancient Egypt turns into a new case for the Code Busters when they discover that someone may be stealing artifacts and replacing them with cunning forgeries"--Provided by publisher.

During a class trip to Washington, D.C., the Code Busters have many opportunities to hone their sleuthing skills as they explore the International Spy Museum, the White House, and more, but when a classmate goes missing, a mysterious figure in a trench coat may be the key to solving the case.

World War I is often viewed as a war fought by armies of millions living and fighting in trenches, aided by brutal machinery that cost the lives of many. But behind all of this an intellectual war was also being fought between engineers, chemists, code-breakers, physicists, doctors, mathematicians, and intelligence gatherers. This hidden war was to make a positive and lasting contribution to how war was conducted on land, at sea, and in the air, and most importantly, life at home.

A portrait of the men and women who worked as spies and code breakers during World War II.

Describes how the American military in World War II used a group of Navajo Indians to create an indecipherable code based on their native language.

Explores the history of cryptography and codes, discussing a variety of different kinds of codes and ciphers, as well as how codes have been used by militaries throughout the world.

"An enigmatic message leads the Code Busters on a treasure hunt on creepy Alcatraz Island, where they must use their problem-solving skills to unravel the mystery"--Provided by publisher.

"In Code Warriors, [the author tells] 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"--Amazon.com.