(22-12-2025, 08:44 PM)oshfdk Wrote: You are not allowed to view links. Register or Login to view.Is there any specific evidence linking the manuscript to the East Asia?
I see some evidence, but many people prefer some other explanation for it.
The strongest evidence is the rigid structure of Voynichese words. A consequence of this structure is a sharp limit on word length, and the increased randomness (entropy) of the characters near the end of each word, even considering the preceding characters. These are features of languages where each word is just one syllable. There are a hundred or more such languages widely spoken in "East Asia", from Tibet to China and Vietnam. Outside of that area, there may be only a few in Central or South Africa, and in the Americas.
If one does not accept "East Asian" as the explanation for those features, one must assume that these are consequences of the encryption scheme. Then it could be a codebook cipher, where each lexeme is replaced by an arbitrary number according to a dictionary, and the number is written in a funky Roman-like notation. IIUC, the Naibbe encoding proposed by @magnesium is a way to do the last step.
However, codebook ciphers are very laborious to write and read. Still, considering the example of the Rohonc Codex, maybe the VMS author
was crazy enough to use such a scheme...
All the best, --stolfi
[PS. Why do cryptographers use the word "cipher" without qualification to mean "codebook cipher", but then use "substitution cipher" or "Vigenère cipher" for things that are not "cipher"?
It is like the mathematicians defining "partial order" as something that includes "total order" as a special case. And logicians (and Python) use "lambda" to define a function. Stupid attachment to tradition...]