(15-02-2026, 09:14 PM)Fontanellean wrote: You are not allowed to view links. Register or Login to view.That particular example isn't restrictive enough, but I'm simply referring to the general family of delta ciphers. At least they predict a general trend toward word similarity and phrase similarity for someone lacking the aid of a computer. I just want to make sure anything I investigate is deep within a parameter space that hasn't been excluded.
Delta ciphers haven't been excluded or investigated AFAIK. How would you investigate something so elusive?
I did some statistics on oshfdk's cipher (without special rule to ignore text until the first p/f) on paragraphs of the VMS to see how many differences exist within the cipher's specification (max. 1 char added, max. 1 char removed): they could store between 5000 and 15000 characters of plaintext depending on how lines are reparsed (or not).