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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. The pigpen cipher (alternatively referred to as the masonic cipher, Freemason's cipher, Rosicrucian cipher, Napoleon cipher, and tic-tac-toe cipher) is a geometric simple substitution cipher, which exchanges letters for symbols which are fragments of a grid.

  3. Kryptos - Wikipedia

    en.wikipedia.org/wiki/Kryptos

    1990. Dimensions. 11–12 feet × 20 feet. Location. George Bush Center for Intelligence, Langley, Virginia. Coordinates. 38°57′08″N 77°08′45″W. /  38.95227°N 77.14573°W  / 38.95227; -77.14573. Kryptos is a distributed sculpture by the American artist Jim Sanborn located on the grounds of the Central Intelligence Agency (CIA ...

  4. History of cryptography - Wikipedia

    en.wikipedia.org/wiki/History_of_cryptography

    To put this in context, each binary unit of information, or bit, has a value of 0 or 1. An 8-bit key would then have 256 or 2^8 possible keys. A 56-bit key would have 2^56, or 72 quadrillion, possible keys to try and decipher the message. With modern technology, cyphers using keys with these lengths are becoming easier to decipher.

  5. Crack the code in Do Not Believe His Lies - Engadget

    www.engadget.com/2015-01-15-crack-the-code-in-do...

    These puzzles require a bit of "outside the box" thinking in most cases and some answers make little sense. Do Not Believe His Lies: The Unforgiving Riddle utilizes an assortment of riddle devices ...

  6. Transposition cipher - Wikipedia

    en.wikipedia.org/wiki/Transposition_cipher

    Step-by-step process for the double columnar transposition cipher. In cryptography, a transposition cipher (also known as a permutation cipher) is a method of encryption which scrambles the positions of characters ( transposition) without changing the characters themselves. Transposition ciphers reorder units of plaintext (typically characters ...

  7. Tap code - Wikipedia

    en.wikipedia.org/wiki/Tap_code

    X. Y. Z. The tap code, sometimes called the knock code, is a way to encode text messages on a letter-by-letter basis in a very simple way. The message is transmitted using a series of tap sounds, hence its name. [1] The tap code has been commonly used by prisoners to communicate with each other. The method of communicating is usually by tapping ...

  8. Beale ciphers - Wikipedia

    en.wikipedia.org/wiki/Beale_ciphers

    A pamphlet published in 1885, entitled The Beale Papers, is the source of this story.The treasure was said to have been obtained by an American named Thomas J. Beale in the early 1800s, from a mine to the north of Nuevo México (New Mexico), at that time in the Spanish province of Santa Fe de Nuevo México (an area that today would most likely be part of Colorado).

  9. These are the pedophile symbols you need to know to protect ...

    www.aol.com/news/2016-04-26-these-are-the...

    One logo features blue spiral-shaped triangle surrounded by a larger triangle, represents an pedophile who is attracted to boys. A variation of this logo features rounded corners to resemble a ...