Ancient Cryptography
Ancient Texts => Kryptos Sculpture => Topic started by: tommietheturtle on July 27, 2013, 04:02:44 AM
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https://www.eleceng.adelaide.edu.au/personal/dabbott/wiki/index.php/Cipher_Cross-off_List (https://www.eleceng.adelaide.edu.au/personal/dabbott/wiki/index.php/Cipher_Cross-off_List)
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Beaufort Cipher looks promising.
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as does Four-square Cipher.