Some famous ciphertexts (or cryptograms), in chronological order by date, are:

Year of originCiphertextDecipherment status 179–180 Papyrus Oxyrhynchus 90 1400s (15th century) Voynich manuscript 1500s (16th century) (?) Rohonc Codex 1586 Babington Plot ciphers 1600s Borg cipher 17th century Great Cipher 1730 Cryptogram of Olivier Levasseur 1760–1780 Copiale cipher 1843 "The Gold-Bug" cryptogram by Edgar Allan Poe 1882 Debosnys cipher 1885 Beale ciphers 1897 Dorabella Cipher 1903 "The Adventure of the Dancing Men" code by Arthur Conan Doyle 1917 Zimmermann telegram 1918 Chaocipher 1918–1945 Enigma machine messages 1939 D'Agapeyeff cipher 1939–1945 Purple cipher machine messages 1941 Lorenz SZ42 machine cipher messages 1944 Pigeon NURP 40 TW 194 1948 Tamam Shud case 1950(?) James Hampton's script 1969 Zodiac Killer ciphers 1977 The Magic Words are Squeamish Ossifrage 1983Decipher 1986Decipher II1987Decipher III 1990 Kryptos 1991Scorpion ciphers 1999 Ricky McCormick's encrypted notes 2006 Smithy code, embedded within the 2006 judgment on The Da Vinci Code case 2012–2016 Cicada 3301 puzzles 2015 11B-X-1371 2020 Noita Eye Messages

See also Undeciphered writing systems (cleartext, natural-language writing of unknown meaning)

References

External links Elonka Dunin's list of famous unsolved codes and ciphers Noita's Eye Messages