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  2. Pigpen cipher - Wikipedia

    en.wikipedia.org/wiki/Pigpen_cipher

    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.

  3. Substitution cipher - Wikipedia

    en.wikipedia.org/wiki/Substitution_cipher

    t. e. In cryptography, a substitution cipher is a method of encrypting in which units of plaintext are replaced with the ciphertext, in a defined manner, with the help of a key; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth. The receiver deciphers the text by ...

  4. Cipher - Wikipedia

    en.wikipedia.org/wiki/Cipher

    Also includes runically unrelated blackletter writing style and pigpen cipher. 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 ...

  5. Scytale - Wikipedia

    en.wikipedia.org/wiki/Scytale

    A scytale. In cryptography, a scytale (/ ˈskɪtəliː /; also transliterated skytale, Ancient Greek: σκυτάλη skutálē "baton, cylinder ", also σκύταλον skútalon) is a tool used to perform a transposition cipher, consisting of a cylinder with a strip of parchment wound around it on which is written a message. The ancient Greeks ...

  6. Nyctography - Wikipedia

    en.wikipedia.org/wiki/Nyctography

    Nyctography is a form of substitution cipher writing created by Lewis Carroll (Charles Lutwidge Dodgson) in 1891. It is written with a nyctograph (a device invented by Carroll) and uses a system of dots and strokes all based on a dot placed in the upper left corner. Using the Nyctograph, one could quickly jot down ideas or notes without the aid ...

  7. Unsolved! - Wikipedia

    en.wikipedia.org/wiki/Unsolved!

    978-1-40088-479-7. Unsolved! The History and Mystery of the World’s Greatest Ciphers from Ancient Egypt to Online Secret Societies is a 2017 book by American mathematician and cryptologist Craig P. Bauer. The book explores the history and challenges of various unsolved ciphers, ranging from ancient scripts to modern codes and puzzles.

  8. Thomas Brierley grave cipher - Wikipedia

    en.wikipedia.org/wiki/Thomas_Brierley_grave_cipher

    The cipher at the foot of the gravestone says "Holiness of the Lord". The Pigpen cipher was used by Freemasons in the 18th century to keep their records private and surprisingly the cipher on Thomas Brierley's grave seems to have a non-standard symbol for the letter "S". It is possible the variation in the cipher is a clue to or a key to ...

  9. Category:Classical ciphers - Wikipedia

    en.wikipedia.org/wiki/Category:Classical_ciphers

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