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  2. Cryptogram - Wikipedia

    en.wikipedia.org/wiki/Cryptogram

    A cryptogram is a type of puzzle that consists of a short piece of encrypted text. [ 1] Generally the cipher used to encrypt the text is simple enough that the cryptogram can be solved by hand. Substitution ciphers where each letter is replaced by a different letter or number are frequently used. To solve the puzzle, one must recover the ...

  3. List of ciphertexts - Wikipedia

    en.wikipedia.org/wiki/List_of_ciphertexts

    Olivier Levasseur's treasure cryptogram Solved in 2024 1748–1756 Shugborough inscription: Unsolved 1760–1780 Copiale cipher: Solved in 2011 1843 "The Gold-Bug" cryptogram by Edgar Allan Poe: Solved (solution given within the short story) 1882 Debosnys cipher: Unsolved 1885 Beale ciphers

  4. 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).

  5. American Cryptogram Association - Wikipedia

    en.wikipedia.org/wiki/American_Cryptogram...

    The American Cryptogram Association(ACA) is an American non-profitorganization devoted to the hobbyof cryptography, with an emphasis on types of codes, ciphers, and cryptogramsthat can be solved either with pencil and paper, or with computers, but not computer-only systems. History.

  6. Jefferson disk - Wikipedia

    en.wikipedia.org/wiki/Jefferson_disk

    A disk cipher device of the Jefferson type from the 2nd quarter of the 19th century in the National Cryptologic Museum. The Jefferson disk, also called the Bazeries cylinder or wheel cypher, [1] was a cipher system commonly attributed to Thomas Jefferson that uses a set of wheels or disks, each with letters of the alphabet arranged around their edge in an order, which is different for each ...

  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. 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 ...

  9. Ricky McCormick's encrypted notes - Wikipedia

    en.wikipedia.org/wiki/Ricky_McCormick's_encrypted...

    The partially decomposed body of Ricky McCormick was discovered in a field in St. Charles County, Missouri on June 30, 1999. Sheriffs found two garbled hand-written notes – apparently written in secret code – in the victim's pockets, and these were handed over to the FBI for further investigation. Attempts by the FBI's Cryptanalysis and ...

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