If I have a ciphertext, what information about the probable ciphers used can I infer from the ciphertext itself? For example, information from:
- the length
- the spacing / grouping of characters
- the range of characters used
- frequency counts
and any other information that is intrinsic to the ciphertext itself.
I'm talking about pencil-and-paper ciphers of the kind often used in cryptogram puzzles, rather than real, 'strong', modern forms of crypto.
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