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The pigpen cipher uses graphical symbols assigned according to a key similar to the above diagram. [1]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.
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 .
Caesar cipher. The action of a Caesar cipher is to replace each plaintext letter with a different one a fixed number of places down the alphabet. The cipher illustrated here uses a left shift of 3, so that (for example) each occurrence of E in the plaintext becomes B in the ciphertext. In cryptography, a Caesar cipher, also known as Caesar's ...
Pirate code. Treasure being divided among pirates in an illustration by Howard Pyle. A pirate code, pirate articles, or articles of agreement were a code of conduct for governing ships of pirates, notably between the 17th and 18th centuries, during the so-called "Golden Age of Piracy". The typical pirate crew was an unorthodox mixture of former ...
The United States Secret Service uses code names for U.S. presidents, first ladies, and other prominent persons and locations. [ 1] The use of such names was originally for security purposes and dates to a time when sensitive electronic communications were not routinely encrypted; today, the names simply serve for purposes of brevity, clarity ...
Notable examples of broken crypto designs include the first Wi-Fi encryption scheme WEP, the Content Scrambling System used for encrypting and controlling DVD use, the A5/1 and A5/2 ciphers used in GSM cell phones, and the CRYPTO1 cipher used in the widely deployed MIFARE Classic smart cards from NXP Semiconductors, a spun off division of ...
In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption —a series of well-defined steps that can be followed as a procedure. An alternative, less common term is encipherment. To encipher or encode is to convert information into cipher or code. In common parlance, "cipher" is synonymous with "code", as ...
This "code" is one of many innocuous sounding secret codes that stores use to alert employees to problems without distracting you from shopping. We tracked down some current and former retail ...