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| From | Rich <rich@example.invalid> |
|---|---|
| Newsgroups | sci.crypt |
| Subject | Re: Triangulation Cryptography.- The Triangle model is Merely the Box That the Ciphertext Travels In' |
| Date | 2021-09-17 20:34 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <si2u4d$srl$2@dont-email.me> (permalink) |
| References | <94ae51ef-0cbd-465f-b238-b5950d8188dbn@googlegroups.com> <si2930$q24$1@dont-email.me> <si2al8$12id$1@gioia.aioe.org> |
Max <maxturv26@gmx.net> wrote: > On 17.09.21 16:35, Richard Heathfield wrote: >> On 17/09/2021 14:25, austin obyrne wrote: > <snip> >> >> Since you can only encrypt a limited subset of ASCII, a trial decrypt >> that results only in ASCII 32-126 is a fair bet for closer inspection. > > Tbh, if the whole system works in base, idk, 94 of something, this > wouldn't work. But, I doubt this, too and the limitation is of course a > bit weird. Actually, Austin's 'system' works in binary (although he does not realize this) and his "characters" are, likely (MM could say with greater accuracy) stored in the Ada equivalent of a C char * string (i.e., one byte per character). And they are stored using the ASCII codepoints. His 'limitation' of ASCII 32-126 is because Ada's text mode I/O library (the only one Austin knows how to use) enforces that all characters read in from a file (or from a terminal) must lie between 32-126 (with special 'behind the scenes' handling of newlines, which is why Austin is also ignorant of ASCII newlines). But it is most definetly not "base 94". It is simply ASCII, with each code point encoded into a single byte. And yes, if one were to perform a brute force run against one of his examples, one could immediately reject as invalid any output which had any byte with a value other than 32-126 present. That significantly narrows the number of trials that one has to otherwise examine.
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Triangulation Cryptography.- The Triangle model is Merely the Box That the Ciphertext Travels In' austin obyrne <ao402468@gmail.com> - 2021-09-17 06:25 -0700
Re: Triangulation Cryptography.- The Triangle model is Merely the Box That the Ciphertext Travels In' Richard Heathfield <rjh@cpax.org.uk> - 2021-09-17 15:35 +0100
Re: Triangulation Cryptography.- The Triangle model is Merely the Box That the Ciphertext Travels In' Max <maxturv26@gmx.net> - 2021-09-17 17:01 +0200
Re: Triangulation Cryptography.- The Triangle model is Merely the Box That the Ciphertext Travels In' Rich <rich@example.invalid> - 2021-09-17 20:34 +0000
Re: Triangulation Cryptography.- The Triangle model is Merely the Box That the Ciphertext Travels In' Max <maxturv26@gmx.net> - 2021-09-17 22:53 +0200
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