Finally, the codex’s literal quotations from the Bible proved helpful for breaking the ciphertext. Király and Tokai consider these quotations as a kind of Rosetta Stones of the Rohonc Codex. For instance, knowing the code word for “give” and having a conjecture about the code word for “tree”, Tokai could identify a passage in the codex as Matthew 7:17–18.
Based on this findings, Király and Tokai could decipher considerable parts of the Rohonc Codex.
Is the Rohonc Codex completely deciphered now?
No. Király and Tokai make clear that the present state of their research project is not marked by finished research. They say that it is likely that the code will never be completely broken (this is not uncommon, as the meaning of some code words cannot be derived from the context).
Király and Tokai now hope for help from specialists of other disciplines—such as linguistics or historians. This is why they have decided to publish their findings the way they currently are.
Király and Tokai plan to publish further articles, in which they plan to describe the content of the cleartext, as well as the morphology, syntax, and peculiarities of the code. The possible language(s) of the author will be addressed, too. They will also provide a detailed table of contents, further indices, and a glossary.
Is Király and Tokai’s solution correct?
To be honest, it is hard for me to judge whether Király and Tokai’s solution is correct. I am a crypto expert, not a linguist. However, I know that Cryptologia has high proof-reading standards (I am a member of the magazine’s editorial board and I occasionally do proof-readings) and that Craig Bauer, the editor-in-chief of Cryptologia, is an experienced cryptogram expert who would certainly not publish a non-substantial solution.
In addition, I know that Rohonc Codex expert Benedek Láng has followed the path of Király and Tokai’s solution in the last 8 years and that he has read the article very carefully. He thinks that the solution is correct.
All in all, I put a fair degree of trust in this solution.
I hope that future publications of Király and Tokai will reveal more details about the solution and that more experts will state their opinion about it.
Further reading: How Paolo Bonavoglia solved a 19th century encrypted book