Some famous
ciphertext
In cryptography, ciphertext or cyphertext is the result of encryption performed on plaintext using an algorithm, called a cipher. Ciphertext is also known as encrypted or encoded information because it contains a form of the original plaintext ...
s (or
cryptogram
A cryptogram is a type of puzzle that consists of a short piece of encrypted text. 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 ...
s), in chronological order by date, are:
See also
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Undeciphered writing systems
Many undeciphered writing systems exist today; most date back several thousand years, although some more modern examples do exist. The term "writing systems" is used here loosely to refer to groups of glyphs which appear to have representational ...
(cleartext, natural-language writing of unknown meaning)
References
External links
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Elonka Dunin'
list of famous unsolved codes and ciphers
{{DEFAULTSORT:Ciphertexts
Cryptography lists and comparisons
History of cryptography
Undeciphered historical codes and ciphers