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jdege
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Wow, I am actually surprised that this works :O I'd expect the T or other highly frequent consonants to interfere.

The high-frequency consonants won't partition the text into short consonant clusters.

Quote:
 
A quick thought: could the inverse of this test be used to find a correct permutation in a transposition cipher?

If you have the correct permutation, you should have short consonant clusters, so I suppose it would work (if you were working with a plain transposition, where you could identify vowels).

OTOH, you'd also have high-frequency digrams and trigrams, which is what people usually test for. Would counting consonant clusters work? Probably. Would it work better than counting trigrams? I'd have to test it.
When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.
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Another technique for identifying vowels · General