30/08/2020

Four More French Diplomatic Ciphers Using Figures with Diacritics (1647-1649)

I added four ciphers in "Ciphers Early in the Reign of Louis XIV". They are all homophonic substitution ciphers, with a nomenclature employing Arabic figures with diacritics. Now, it seems certain that this is a standard type of French diplomatic ciphers in at least 1611-1676. The first specimen of this type known to me is Beaumont's cipher (1602) in Henry IV's time (here).

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