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  1. NATO: North Atlantic Treaty Organization

    … Treaty Organization It is a phonetic alphabet that uses 26 code words. These words are … NATO , North Atlantic Treaty Organization , phonetic alphabet became effective in 1956 and just a few years later became the established universal phonetic alphabet. However, it took several adaptations before the …

  2. Keyed Caesar Cipher

    … Caesar around 58–50 BCE , shifts each letter of the alphabet by a fixed number of positions. In the Keyed … cipher , a keyword is first used to create a modified alphabet: the letters of the keyword are placed at the start of the alphabet (omitting duplicates), followed by the remaining …

  3. Alberti cipher

    … century, is recognized as one of the earliest examples of a polyalphabetic substitution cipher. Alberti , an Italian … alphabet during encryption. This process is known as polyalphabetic substitution , where a keyword or special … rule or keyword. Since the Alberti cipher employs a polyalphabetic approach, a full substitution table would not …

  4. Patristic Cipher

    … Cipher , also known as a Patristocrat , is a form of monoalphabetic substitution cipher specifically designed … Substitution Monoalphabetic Obfuscation …

  5. C

    … /cee/ n .  The third letter of the English alphabet . ASCII 01000011 . The name of a …

  6. Chaocipher

    … Byrne in 1918 . Unlike traditional ciphers with static alphabets, the Chaocipher uses two dynamically changing alphabets, called the left and right alphabets, which are permuted after encrypting each letter. …

  7. Porta Cipher

    … The Porta cipher is a classical polyalphabetic substitution cipher invented by the Italian … cipher is historically significant because it blends polyalphabetic ideas with a uniquely reciprocal structure, … of the Porta cipher sets it apart from many other polyalphabetic systems. Because each substitution table is …

  8. Simple Substitution Cipher

    … corresponding letter or symbol from a fixed ciphertext alphabet. Its origins trace back to classical antiquity, …

  9. Alienese

    Alienese - Matt Groening and David X. Cohen History of Alienese: A Playful Creation for Futurama Alienese is a fictional and playful writing system created for the animated television series "Futurama." Developed by the show's…

  10. Atbash Cipher

    … cipher that operates by replacing each letter of the alphabet with its respective " opposite " letter. It is … In the Atbash cipher: The first letter of the alphabet A is replaced with the last letter Z … replaced by its counterpart in the reverse order of the alphabet. The Atbash cipher follows a symmetric …