Voynich Reconsidered

[kckluge]

I never quite sure precisely what people mean when they use the term "substitution cipher". Do they just mean a cipher when each letter is substituted with a letter or symbol? Or do they include a more complex cipher with homophones, nulls, substring substitutions, word substitutions etc.

Mark,

While looking for something else, i came across the following book chapter on enciphering methods -- it's discussion of the different types of substitution ciphers probably answers your question in a more authoritative way relative to standard usage: You are not allowed to view links. Register or Login to view.

Karl

(P.S., sorry if I dragged this thread off topic -- I'm very much looking forward to seeing Robert's book when it comes out)