From: paul@fatmans.demon.co.uk
Date: Mon, 13 Jan 1997 09:35:03 -0800 (PST)
To: ichudov@algebra.com
Subject: Re: encryption program
Message-ID: <853170082.1023956.0@fatmans.demon.co.uk>
MIME-Version: 1.0
Content-Type: text/plain



> > * The two 'e's in the first word have different ciphertext equivalents,
> >   so it's not a single-alphabet substitution
> yes

Could be homophonic substitution or possibly (more probably, in my 
estimation, polygram substitution. There is also the possibility of a 
polyalphabetic cipher...
 
> I also likes "follows": "vkbcjtp" note how ll gets translated to "bc".
> That suggest that after some encryption of each letter from the plaintext
> there is a consecutively increasing number added.

This tends to suggest polyalphabetic substitution.

 

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       Paul Bradley, Paul@fatmans.demon.co.uk
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