Cryptomenysis PatefactaCryptomenysis Patefacta, or Art of Secret Information Disclosed Without a Key is a 1685 non-fiction book written by John Falconer,[1] it was only the second text written in English on the topic of cryptography.[2] In 1693 it was republished as Rules for Explaining and Deciphering All Manner of Secret Writing.[3] The book serves as a guide to various cyphers, including Egyptian hieroglyphs and fingerspelling.[4] References
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