Most Common Use of Nulls in 15th Century Cipher Text
#7
Thank you, Nick and Aga for the possible “structural” uses of nulls.  They could be used in a targeted way to hide word length as well as tell-tale locations of particular symbols (if the word structure of the underlying plaintext was too predictable (like Italian with too many ending vowels or German with a too obvious way of making plurals)) - and none of this requires a frequency analysis.

Nick, l also agree that the frequency of the EVA -dy pair gives me pause.  It “feels” artificial like EVA qo- to me - but l have a feeling the function of these two very common pairs is unlikely to be the same or mirrors of each other somehow.  But to figure it out we may well have to get “lucky” and pick right functions from the myriad of possible ones for not just one but both of them because of the high frequency of these pairs in the text.

Koen - quite interested as always for future data.
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RE: Most Common Use of Nulls in 15th Century Cipher Text - by MichelleL11 - 04-10-2020, 12:23 AM

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