The just-published (January 2008) Cryptologia article where it is mentioned is "Cicco Simonetta's Cipher-Breaking Rules", by Augusto Buonafalce, who so generously reviewed my book in the same journal last year. It's a nice little piece to introduce cryptologers and cryptography historians to Cicco Simonetta [there's a nice Italian page on him here], with the added bonus of a good translation of his "regulae" (rules): it even has a black and white reproduction of a painting of Cicco I was not previously aware of.
Augusto rightly dismisses the thought of a powerful Milanese statesman "engaging in the encryption of the Voynich manuscript": but that's not really a summary of my book's argument. What I actually argue is that the presence of the "4o" token in a good number of mid-Quattrocento Northern Italian cipher alphabets (including the Voynich Manuscript) points to a continuity of cipher thinking, one which seemed to travel around with the Sforza miltary caravan... just as Cicco Simonetta did from an early age.
To be precise, I don't claim that Cicco wrote the VMs, or even designed its cipher alphabet. Far from it: rather, that its "4o" token points to a deep-rooted connection between its cipher-system and the ciphers constructed and used by the Milanese Chancellery. My book conjectures that this "4o" 'verbose cipher' trick may have been disclosed in the 1465 meeting between Antonio Averlino and Cicco Simonetta, at which the former placed his outstanding Milanese affairs in the hands of the latter before leaving Milan forever. But in the world of tenuous Voynichological hypotheses, this is one at least that did actually happen! :-)
For all its merits, it would be wrong to characterize Augusto's Cryptologia article as being the final word in the cryptographic history debate over Cicco Simonetta's Regulae: the conclusions I (and others) draw from the available data are quite different, and (in the absence of more conclusive evidence) we can politely agree to differ - and that's OK.
As a side-note here, when I cited (on my p.182) a 1970 article on Cicco's Regulae, I contacted its very-much-still-alive author (Walter Hoeflechner) to see if anyone else in the intervening 36 years had shown an interest - and only the ubiquitous David Kahn had. From that, it's easy to see that the discussion of the intriguing intersection between cryptography and politics offered by Simonetta is very much out of fashion: which is a bit of a shame.
And therefore, I think it would be very nice if Augusto's article proved instead to be the first word in a rather more modern debate over the Regulae: the new generation of historians and researchers who have taken an interest in seeing what the Sforza-era bureaucratic archives have to tell us would almost certainly be bound to find new angles and approaches, and might well carry us all forward in new and interesting directions.
Finally... for me, what is nicest about Augusto's citation is that it is one of those rarest of hen's teeth: a Voynich-related book or paper getting cited outside of the Voynich literature. It is far too early to say that this marks the point where the VMs goes fully mainstream... but it's a start, surely?
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