--- Log opened Thu Jul 06 00:00:51 2023
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08:23 < andytoshi> sipa: https://github.com/BlockstreamResearch/codex32/discussions/55 has a bunch of low-level questions about chacha that you might find interesting to think about
08:23 < andytoshi> though the discussion has veered pretty far into "rolling your own crypto" territory and i'm not sure it's going in a productive direction
08:30 < andytoshi> well, the question specifically is whether you can mess around with the word sizes in chacha to make it more volvelle-friendly, and still have it be secure
08:31 < sipa> I have no clue.
08:31 < sipa> I think this is a question which you should ask the ChaCha20 designers.
08:32 < sipa> Or anyone else who's been involved in its cryptanalysis.
08:32 < andytoshi> chacha is defined in some rfc right? i can get the authors' names from there?
08:32 < andytoshi> https://datatracker.ietf.org/doc/html/rfc8439 is what i'm thinking
08:32 < sipa> The author is DJB.
08:33 < sipa> But he's not the author of the RFC.
08:33 < andytoshi> oh, dope, he's reasonably likelyi to engage with this sort of thing
08:34 < sipa> JP Aumasson may also be interested in this sort of thing (co-author of siphash, which is based on the same principles as chacha).
08:37 < andytoshi> thanks. i posted suggesting that this guy ask djb or aumasson
08:38 < andytoshi> you might want to subscribe to this thread.... idk who this guy is but he actually reduced the word size of chacha then went through a multi-hour process of computing it by hand, so he seems pretty interesting :P
08:41 < andytoshi> real_or_random: you might also find this question interesting (can you reduce the word size of chacha and get away with it)
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09:04 < real_or_random> sounds interesting indeed, but my expertise in construction symmetric crypto is rather limited
09:04 < real_or_random> *constructing
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--- Log closed Fri Jul 07 00:00:52 2023