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The pigpen cipher (alternatively referred to as the masonic cipher, Freemason's cipher, Rosicrucian cipher, Napoleon cipher, and tic-tac-toe cipher) [2] [3] is a geometric simple substitution cipher, which exchanges letters for symbols which are fragments of a grid. The example key shows one way the letters can be assigned to the grid.
The Enigma machine is a cipher device developed and used in the early- to mid-20th century to protect commercial, diplomatic, and military communication. It was employed extensively by Nazi Germany during World War II, in all branches of the German military. The Enigma machine was considered so secure that it was used to encipher the most top ...
Mlecchita Vikalpa is the art of secret writing and secret communications. In The Codebreakers, a 1967 book by David Kahn about the history of cryptography, the reference to Mlecchita Vikalpa in Kamasutra is cited as proof of the prevalence of cryptographic methods in ancient India. Though Kamasutra does not have details of the methods by which ...
In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code, or Caesar shift, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet .
Code talker. Choctaw soldiers in training in World War I for coded radio and telephone transmissions. A code talker was a person employed by the military during wartime to use a little-known language as a means of secret communication. The term is most often used for United States service members during the World Wars who used their knowledge ...
The book's intricate design also conceals a series of hidden symbols that spell out a secret message when their code is deciphered, if the reader is clever enough to find them. Contents. Chapter I: The Work of a Wizard; Chapter II: A Wizard's Map of the World; Chapter III: The Master Wizard's Workshop; Chapter IV: A Wizard's Robes & Tools
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Publisher. First Second. Publication place. United States. Secret Coders is a series of graphic novels that combines logic puzzles, basic programming instruction, and a story where a group of seventh graders uncover a secret coding school. The series is written by Gene Luen Yang, illustrated by Mike Holmes, and published by First Second Books .