Book of Cryptographic Messages
750 AD wrote
Date unknown - The first book on cryptography and cryptanalysis written by a linguist.
The lost work contains many "firsts", including the use of permutations and combinations to list all possible Arabic words with and without vowels.
Later Arab cryptographers explicitly resorted to al-Farahidi's phonological analysis for calculating letter frequency in their own works.
Subjects Who or What wrote?
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Al-Khalil ibn Ahmad al-Farahidi Philologist, lexicograph...
Events in 750 MORE
