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BRIAN_____'s profile
Brian Smith
Brian Smith
Brian Smith
@BRIAN_____

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Brian Smith

@BRIAN_____

Code farmer. Security, crypto, performance, networking, usability. Rust, C++, C, Haskell, DSLs, etc. *ring*, webpki, crypto-bench, mozilla::pkix.

Honolulu & San Francisco
briansmith.org
Joined April 2008

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    Brian Smith‏ @BRIAN_____ Jul 28

    You can use WebAssembly to make a synchronous WebCrypto-like API. Reportedly in some cases (for simple algorithms like digests on small inputs) such an implementation is faster than using the WebCrypto API, presumably b/c of the overhead of WebCrypto's async API.

    11:24 AM - 28 Jul 2018
    • 2 Retweets
    • 28 Likes
    • tim city 2000 J Ayo Akinyele GAURAV 🐍 Zaki Manian Antonio Sanso Mayank Varia Jérôme Wagener Antonius Frie Aranjedeath
    3 replies 2 retweets 28 likes
      1. New conversation
      2. kiniry‏ @kiniry Jul 28
        Replying to @BRIAN_____

        If you don’t care about prolific side-channels... and mountains of extra complexity and attack surface.

        1 reply 0 retweets 3 likes
      3. Brian Smith‏ @BRIAN_____ Jul 28
        Replying to @kiniry

        People are doing it. And people are switching crypto libraries from ones that try hard to avoid side channels to ones that support WebAssembly.

        1 reply 0 retweets 2 likes
      4. Brian Smith‏ @BRIAN_____ Jul 28
        Replying to @BRIAN_____ @kiniry

        It would be great to have a synchronous WebCrypto API so that cross-platform libraries can use it to implement their synchronous APIs, instead of having to choose between not supporting WebAssembly and supporting it in a dangerous way.

        1 reply 1 retweet 4 likes
      5. Jeffrey Yasskin‏ @jyasskin Jul 28
        Replying to @BRIAN_____ @kiniry

        I believe the old WebCrypto editor is working on other things, but a synchronous, worker-only interface sounds totally plausible. Create a WICG repo for it?

        1 reply 0 retweets 1 like
      6. Ryan Sleevi‏ @sleevi_ Jul 28
        Replying to @jyasskin @BRIAN_____ @kiniry

        It was something explored but @slightlylate was highly skeptical of due to things like scheduling and shared workers. Certainly the blink infra doesn’t exist as of last year, when we last (again) explores

        1 reply 0 retweets 1 like
      7. Ryan Sleevi‏ @sleevi_ Jul 28
        Replying to @sleevi_ @jyasskin and

        The design was made so that the promises could be synchronously resolved and async/await would handle any other grossness

        2 replies 0 retweets 2 likes
      8. Brian Smith‏ @BRIAN_____ Jul 29
        Replying to @sleevi_ @jyasskin and

        C programs, Rust programs, etc. don't use async/await. They use sync APIs.

        1 reply 0 retweets 1 like
      9. kiniry‏ @kiniry Jul 29
        Replying to @BRIAN_____ @sleevi_ and

        Async APIs offer suspect functionality on top of sync API’s that do not leak information. I find the vast majority of developers who think they understand async APIs do not, thus the implementation complexity forced by their design is not worth it.

        1 reply 0 retweets 0 likes
      10. 1 more reply
      1. Tony Arcieri‏ @bascule Jul 28
        Replying to @BRIAN_____

        WebCrypto being async drove me insane while implementing the TypeScript version of Miscreant. If it weren't for async/await I think I wouldn't have even bothered.

        0 replies 0 retweets 6 likes
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      1. Tim McLean‏ @McLean0 Jul 28
        Replying to @BRIAN_____

        that's actually hilarious hahaha

        0 replies 0 retweets 0 likes
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