Why Don't We Decipher an Outdated Cipher System? The Codex of Rohonc

The Pathology of Cryptology—A Current Survey

“…The already mentioned Rohonc Codex (Figure 12) [65] is, in a way, the little brother of the Voynich manuscript. It also is an encrypted book that, however, attracted considerably less interest as yet.…”

Second Charlotte International Cryptologic Symposium

“…In my talk, I presented the ten most interesting encrypted books I am aware of. Among others, I addressed the Voynich Manuscript [2,7,10,[13][14][15][16], the Rohonc Codex [11], the Folger Manuscript [4,12], and the Action Line Cryptogram [1], all of which have been covered in Cryptologia articles in the last 35 years. These ten examples come from a list of 40 encrypted books I had assembled and published on my website.…”