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wycats's profile
Yehuda Katz 🥨
Yehuda Katz 🥨
Yehuda Katz  🥨
Verified account
@wycats

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Yehuda Katz  🥨Verified account

@wycats

Tilde Co-Founder, OSS enthusiast and world traveler.

Portland, OR
yehudakatz.com
Joined August 2007

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    1. Patrick Walton‏ @pcwalton 22 Dec 2017

      To those writing programming language benchmarks: Stop benchmarking rand(). You are hurting security by penalizing default CSPRNG use.

      6 replies 53 retweets 199 likes
    2. Yehuda Katz  🥨‏Verified account @wycats 22 Dec 2017
      Replying to @pcwalton

      Similar: web framework benchmarks that penalize rails for: - signed cookies by default - verifying signed cookies by default - bcrypt by default (constant time hashing) It takes a bit of time to do those things, but I don't mind paying 1ms for security by default.

      4 replies 16 retweets 63 likes
    3. David Turner‏ @NovalisDMT 23 Dec 2017
      Replying to @wycats @pcwalton

      I don't understand where 1ms comes from. If you authenticate a ~100b cookie with hmac(sha1), it should take microseconds. bcrypt is only relevant for password storage (session establishment), not for any other request.

      1 reply 0 retweets 1 like
    4. Yehuda Katz  🥨‏Verified account @wycats 23 Dec 2017
      Replying to @NovalisDMT @pcwalton

      It's a bunch of different things that add up. Also please feel free to write a framework that only uses bcrypt in the "right requests" and establishes a programming model around it.

      1 reply 0 retweets 1 like
    5. David Turner‏ @NovalisDMT 23 Dec 2017
      Replying to @wycats @pcwalton

      I'm OK with heavyweight frameworks that do lots for you. But I don't think it's right to blame security for a 1ms overhead. I'm not a security expert, tho, so maybe I am missing how bcrypt is supposed to be used. If so, I want to be corrected so I don't write insecure code!

      1 reply 0 retweets 1 like
      Yehuda Katz  🥨‏Verified account @wycats 23 Dec 2017
      Replying to @NovalisDMT @pcwalton

      I don't think we need to spend a lot of time discussing 1ms of overhead is my point. But there's a lot of security by default in rails: CSRF protection, XSS protection, secure cookies, "strong parameters", various DOS mitigations, etc. It adds up.

      7:32 PM - 23 Dec 2017
      0 replies 0 retweets 0 likes

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