How easy is it to create a cipher which is very hard to break?
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(13-07-2020, 12:00 AM)R. Sale wrote: You are not allowed to view links. Register or Login to view.So let's back up just a bit. If the proposed covert communications system involves a lot of filler text, and this means most of the text is meaningless fluff, then what is up with the *meaningful* text? How do we find it?


Excellent point! These systems can only look "simple" until one considers the specifics of actual methods. When I examined the You are not allowed to view links. Register or Login to view. (75% of which is filler text) I found that they are extremely brittle: a single typo makes the original message unrecoverable (as happened in early editions). Coming up with something that could work for actual communication requires more sophisticated methods.

Another interesting aspect is that, if the output must be something as highly structured as the VMS, one should also accurately define how to create the "filler" text. I don't believe that any simple method can generate the morphological regularities observed in Voynichese words.
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RE: How easy is it to create a cipher which is very hard to break? - by MarcoP - 13-07-2020, 08:15 AM

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