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  1. Embed this notice
    ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Saturday, 27-Dec-2025 18:51:44 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧

    i don't think cryptographers should be allowed to write cryptographic specifications

    i understand that this is very precise but if you're trying to implement the algorithm it adds _so_ much overhead

    In conversation about 9 months ago from mastodon.social permalink

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    1. https://files.mastodon.social/media_attachments/files/115/790/911/963/544/262/original/0a1579364724c9b9.png
    • Embed this notice
      ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Saturday, 27-Dec-2025 18:54:37 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧
      in reply to

      this is an xor operation described as "constant addition", right

      In conversation about 9 months ago permalink

      Attachments


      1. https://files.mastodon.social/media_attachments/files/115/790/923/152/608/070/original/e98c751061160ed1.png
    • Embed this notice
      ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Saturday, 27-Dec-2025 18:56:24 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧
      in reply to

      is the and operation implicit

      what is the operation precedence here

      In conversation about 9 months ago permalink

      Attachments


      1. https://files.mastodon.social/media_attachments/files/115/790/927/718/629/177/original/8fc3961c147e7161.png
    • Embed this notice
      ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Saturday, 27-Dec-2025 19:00:36 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧
      in reply to
      • Lesley Lai

      @lesley it took me several years to grasp the PL research notation, but at least there it adds actual value

      the Ascon spec feels like it's written to be obscure. the algorithm is very simple, it's just described in a crackhead manner

      In conversation about 9 months ago permalink
    • Embed this notice
      Lesley Lai (lesley@mastodon.gamedev.place)'s status on Saturday, 27-Dec-2025 19:00:38 JST Lesley Lai Lesley Lai
      in reply to

      @whitequark Reminds me of PL research with its arcane notation involving a lot of Γ, ∆, ⊢, and τ.

      Also reminds me of this video: https://youtu.be/33y9FMIvcWY?si=FjgQDjaKryIvyQUu

      In conversation about 9 months ago permalink

      Attachments

      1. Why Wikipedia Can't Explain Math
        from Tastemaker Design
        Peeling the layers of the onion that is "math Wikipedia".Randomness Testing Guide: https://random.tastemaker.design/Patreon: https://www.patreon.com/Tastemak...
    • Embed this notice
      ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Saturday, 27-Dec-2025 19:06:12 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧
      in reply to

      what would possess someone to describe xor with a 8-bit number as a 64-bit addition

      In conversation about 9 months ago permalink

      Attachments


      1. https://files.mastodon.social/media_attachments/files/115/790/968/756/760/581/original/c5b1f038e5a4ba82.png
    • Embed this notice
      ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Saturday, 27-Dec-2025 19:13:48 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧
      in reply to

      this is going to be implemented in a programming language. copied from a pdf and symbols replaced

      omitting multiplication operators, while natural from a math point of view, makes this _so_ much more painful

      In conversation about 9 months ago permalink

      Attachments


      1. https://files.mastodon.social/media_attachments/files/115/790/998/766/121/652/original/77c7223c86347f86.png
    • Embed this notice
      Shiny Quagsire (shinyquagsire@mastodon.social)'s status on Saturday, 27-Dec-2025 19:16:18 JST Shiny Quagsire Shiny Quagsire
      in reply to

      @whitequark honestly seems more like the kind of thing that would end up in some "is this primitive turing complete" ML paper

      In conversation about 9 months ago permalink
    • Embed this notice
      ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Saturday, 27-Dec-2025 20:49:14 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧
      in reply to

      cryptographers: addition is +, xor is ⊕

      same cryptographers: now we're gonna use the word "addition" for xor

      it's not that i'm missing something, this paper is just poorly written

      In conversation about 9 months ago permalink

      Attachments


      1. https://files.mastodon.social/media_attachments/files/115/791/371/372/841/182/original/667c5fe071d1e90d.png
    • Embed this notice
      ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Saturday, 27-Dec-2025 20:49:20 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧
      in reply to

      also they don't specify the endianness of concatenation. why is it pointlessly verbose where it doesn't matter, and not verbose enough where it does

      In conversation about 9 months ago permalink

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