Re: VMs: Three frequency tables

[Rene Zandbergen <r_zandbergen@xxxxxxxxx>]

--- Jeff <jeff@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> The polymorphic cipher will not give a letter for
> letter substitution. Like
> a polyalphabetic. However single substitution is not
> used. An example.
> 
> Take a line from the VMS.
> 
>
shoy.ckhey.kodaiin.cphy.cphodaiils.cthey.she.oldain.d

 (description deleted)

> Again all comments welcome.

Two comments:

1) Thanks, this is a very clear description! 

2) It describes the decryption process. I am pretty
sure, however that the opposite process (encryption)
cannot exist. Bear with me:
The scribe would always be in the 
following situation: a new plaintext character
must be encoded, and there are already two code
characters on the papper (Vellum) to make a new
triplet. That means that for any given (code) pair
on the vellum there should be many different
triplets in his tables in order to accommodate the 
many different plaintext characers to be encoded.
However, in Voynichese the possible set of triplets
is very restricted. 

I know that this is a qualitative analysis, but
before pursuing this path you should be concerned
that the encryption matching your decryption
actually exists.

A suggestion: it might be worth trying the opposite:
the VMs was encrypted using a method that you are
using for decryption...

All the best,
           Rene



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