The nymphs are possibly inspired from Dante manuscripts

[Jorge_Stolfi]

That would be all fine and logical... if it were not for the part where they invent an unbreakable cipher that no computer or professional cryptanalyst can even BEGIN to make sense of.

There is no cipher that is even remotely as hard to crack as a language which is not related to any language you know.  All the spooks in the world together would not make a dent in  "deciphering" a text in Sumerian, Etruscan, Prahã, or watever, without either a bilingual text or access to a speaker of the language.

All the nest, --stolfi