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  2. Playfair cipher - Wikipedia

    en.wikipedia.org/wiki/Playfair_cipher

    The Playfair cipher or Playfair square or Wheatstone–Playfair cipher is a manual symmetric encryption technique and was the first literal digram substitution cipher. The scheme was invented in 1854 by Charles Wheatstone , but bears the name of Lord Playfair for promoting its use.

  3. Shared secret - Wikipedia

    en.wikipedia.org/wiki/Shared_secret

    In cryptography, a shared secret is a piece of data, known only to the parties involved, in a secure communication. This usually refers to the key of a symmetric cryptosystem . The shared secret can be a PIN code , a password , a passphrase , a big number, or an array of randomly chosen bytes.

  4. Puzzle solutions for Wednesday, Nov. 27, 2024

    www.aol.com/news/puzzle-solutions-wednesday-nov...

    Find answers to the latest online sudoku and crossword puzzles that were published in USA TODAY Network's local newspapers. Puzzle solutions for Wednesday, Nov. 27, 2024 Skip to main content

  5. Cipher - Wikipedia

    en.wikipedia.org/wiki/Cipher

    For example, "UQJHSE" could be the code for "Proceed to the following coordinates." When using a cipher the original information is known as plaintext, and the encrypted form as ciphertext. The ciphertext message contains all the information of the plaintext message, but is not in a format readable by a human or computer without the proper ...

  6. NYT ‘Connections’ Hints and Answers Today, Friday, December 13

    www.aol.com/nyt-connections-hints-answers-today...

    Read no further until you really want some clues or you've completely given up and want the answers ASAP. Get ready for all of today's NYT 'Connections’ hints and answers for #551 on Friday ...

  7. Key exchange - Wikipedia

    en.wikipedia.org/wiki/Key_exchange

    The shared secret can be used, for instance, as the key for a symmetric cipher. If the sender and receiver wish to exchange encrypted messages, each must be equipped to encrypt messages to be sent and decrypt messages received. The nature of the equipping they require depends on the encryption technique they might use. If they use a code, both ...

  8. Cryptogram - Wikipedia

    en.wikipedia.org/wiki/Cryptogram

    Celebrity Cipher, distributed by Andrew McMeel, is another cipher game in contemporary culture, challenging the player to decrypt quotes from famous personalities. [6] A cryptoquip is a specific type of cryptogram that usually comes with a clue or a pun. The solution often involves a humorous or witty phrase. [7]

  9. Clock (cryptography) - Wikipedia

    en.wikipedia.org/wiki/Clock_(cryptography)

    The Enigma cipher machine relied on the users having some shared secrets. Here are the secret daily settings from a 1930 Enigma manual: [ 9 ] [ 10 ] Daily settings (shared secret): Rotor Order : II I III Ringstellung : 24 13 22 (XMV) Reflector : A Plugboard : A-M, F-I, N-V, P-S, T-U, W-Z Grundstellung: 06 15 12 (FOL)