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cmuratori's profile
Casey Muratori
Casey Muratori
Casey Muratori
@cmuratori

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Casey Muratori

@cmuratori

I'm worried that the baby thinks people can't change.

Seattle
caseymuratori.com
Joined March 2009

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    Casey Muratori‏ @cmuratori Aug 14

    Maybe I should ask my cryptography questions more philosophically: does anyone actually _care_ how fast Chacha20 runs on modern servers? If they do, who are they? And which benchmarks are they using to check? Given its place in TLS and QUIC, I assumed people would care...

    1:20 AM - 14 Aug 2021
    • 30 Likes
    • TheBuzzSaw Abhishek Cherath Viktoriia Pashchenko | Small Dark Tender Rose 32th System Clemens Wasser C0rneli0delr4nch0 Anzheluo blast
    6 replies 0 retweets 30 likes
      1. Pau Fernández‏ @pauek Aug 14
        Replying to @cmuratori

        That is totally the right question. Everyone is comfortably at their layer in the stack. We need more programmers with your mindset (and skill). Thanks for keeping at it and show us.

        0 replies 0 retweets 6 likes
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      1. Paul Hankin‏ @PaulHankin2 Aug 14
        Replying to @cmuratori

        The go language implementation has benchmarks. Here's a link to the test file that contains the benchmarks. Best I can do on phone. https://cs.opensource.google/go/x/crypto/+/0ba0e8f0:chacha20/chacha_test.go …

        0 replies 0 retweets 2 likes
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      2. David Crawshaw‏ @davidcrawshaw Aug 14
        Replying to @cmuratori

        From the perspective of a user with only the standardized options to choose from: it’s never the throughput/latency bottleneck on servers. On the (often) ARM clients it is more significant in profiles, but was at least at one point, the best choice: https://www.imperialviolet.org/2014/02/27/tlssymmetriccrypto.html …

        1 reply 0 retweets 3 likes
      3. Felipe O. Carvalho‏ @_Felipe Aug 14
        Replying to @davidcrawshaw @cmuratori

        I came here to say the same. ARM clients is where I've seen performance mentioned. And for full disk encryption, they even reduce the number of rounds. https://tosc.iacr.org/index.php/ToSC/article/view/7360 …

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. John Downey‏ @jtdowney Aug 14
        Replying to @cmuratori

        In general no, I don’t think many people are paying attention to that, they’re just using whatever ships with what they got. There is some work at http://bench.cr.yp.to/impl-stream/chacha20.html … but it’s not bleeding edge

        0 replies 0 retweets 0 likes
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      2. just-a-programmer‏ @programmer_just Aug 14
        Replying to @cmuratori

        I would think @programmingart would care

        1 reply 0 retweets 0 likes
      3. Robin Marx‏ @programmingart Aug 14
        Replying to @programmer_just @cmuratori

        Sadly that's a bit outside of my area of comfort :) I'd assume people care for QUIC in datacenters and there is picotls' "fusion mode", but I'm not an expert. Probably @kazuho and @gamernb have more valuable opinions on this

        1 reply 0 retweets 1 like
      4. Show replies
      1. Mark Nadal‏ @marknadal Aug 14
        Replying to @cmuratori

        Because browsers can't handle 6+ WebRTC streams SFU proxying is important, but InsertableStreams lets us mix/encode/encrypt so we mix 3 participants "beneath" me. My mixed stream gets mixed by someone "above" me. Server ideally least work, just bandwidth relay. @qxip

        0 replies 0 retweets 1 like
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