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bascule's profile
Tony Arcieri
Tony Arcieri
Tony Arcieri
@bascule

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Tony Arcieri

@bascule

Co-founder @iqlusioninc, formerly @square @chain. Cryptography dilettante, polyglot programmer, key management wrangler, and infrastructure security specialist

San Francisco, CA
tonyarcieri.com
Joined May 2007

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    1. Darsey Litzenberger‏ @DLitz 6 Nov 2014
      Replying to @bascule

      @bascule @WatsonLadd Maybe also drop the 224-bit security level?

      1 reply 0 retweets 0 likes
    2. Watson Ladd‏ @WatsonLadd 6 Nov 2014
      Replying to @DLitz

      @DLitz @bascule We've had implementors tell us they want the speed advantage over 521.

      1 reply 0 retweets 0 likes
    3. Darsey Litzenberger‏ @DLitz 6 Nov 2014
      Replying to @WatsonLadd

      @WatsonLadd @bascule Then use Curve25519?

      2 replies 0 retweets 0 likes
    4. Darsey Litzenberger‏ @DLitz 6 Nov 2014
      Replying to @DLitz

      @WatsonLadd @bascule Honestly, we're never going to have widespread, correct implementations unless we stop having dozens of silly options.

      1 reply 0 retweets 0 likes
    5. Tony Arcieri‏ @bascule 6 Nov 2014
      Replying to @DLitz

      @DLitz @WatsonLadd we’re never going to get anywhere if we keep arguing about what curves to use…

      2 replies 0 retweets 0 likes
    6. Darsey Litzenberger‏ @DLitz 6 Nov 2014
      Replying to @bascule

      @bascule @WatsonLadd True, but it's also pointless theater if enough implementations end up insecure, even if on paper it's "high security".

      1 reply 0 retweets 0 likes
    7. Tony Arcieri‏ @bascule 6 Nov 2014
      Replying to @DLitz

      @DLitz @WatsonLadd I don't see how that comment has anything to do with a conversation on curve selection

      1 reply 0 retweets 0 likes
    8. Darsey Litzenberger‏ @DLitz 6 Nov 2014
      Replying to @bascule

      Darsey Litzenberger Retweeted Darsey Litzenberger

      @bascule @WatsonLadd https://twitter.com/DLitz/status/530604729965899776 … https://twitter.com/DLitz/status/530606180863705089 …https://twitter.com/DLitz/status/530607321345314816 …

      Darsey Litzenberger added,

      Darsey Litzenberger @DLitz
      Replying to @DLitz
      @WatsonLadd Anyway, back to security levels: If the APIs & UIs are sane, users & devs won't see the "security level" knob anyway.
      1 reply 0 retweets 0 likes
    9. Tony Arcieri‏ @bascule 6 Nov 2014
      Replying to @DLitz

      @DLitz @WatsonLadd so your alternative is one curve to rule them all and a single ciphersuite? What happens when something breaks?

      2 replies 0 retweets 0 likes
    10. Darsey Litzenberger‏ @DLitz 6 Nov 2014
      Replying to @bascule

      @bascule @WatsonLadd Re: "What happens when something breaks?" Worst-case, we upgrade, like we did with bash. Still better than status quo.

      1 reply 0 retweets 0 likes
      Tony Arcieri‏ @bascule 6 Nov 2014
      Replying to @DLitz

      @DLitz speaking as someone who deals with TLS termination for a major site, having failsafes in a shifting security landscape is essential

      11:27 PM - 6 Nov 2014
      2 replies 0 retweets 0 likes
        1. New conversation
        2. Tony Arcieri‏ @bascule 6 Nov 2014
          Replying to @bascule

          @DLitz there is a definite need for something to shift to in the event of the discovery of major flaws anywhere in the cryptosystem

          2 replies 0 retweets 0 likes
        3. Darsey Litzenberger‏ @DLitz 6 Nov 2014
          Replying to @bascule

          @bascule It shouldn't wait for major flaws. BEAST never would have happened if we regularly upgraded entire protocols.

          2 replies 0 retweets 0 likes
        4. Tony Arcieri‏ @bascule 6 Nov 2014
          Replying to @DLitz

          @DLitz you're not really big on that whole "interoperability" thing, are you?

          2 replies 0 retweets 0 likes
        5. Darsey Litzenberger‏ @DLitz 6 Nov 2014
          Replying to @bascule

          @bascule Really, all any implementation needs today is: 1. This year's state-of-the-art; and 2. Last year's state-of-the-art.

          3 replies 0 retweets 0 likes
        6. Tony Arcieri‏ @bascule 6 Nov 2014
          Replying to @DLitz

          @DLitz here in the real world, we’re forced to implement protocols created in the ‘80s, because they’re still used

          1 reply 0 retweets 0 likes
        7. Darsey Litzenberger‏ @DLitz 6 Nov 2014
          Replying to @bascule

          @bascule No 1980s protocol is secure. If you need to talk to 1980s software, tunnel it through a real secure channel.

          0 replies 0 retweets 0 likes
        8. End of conversation
        1. New conversation
        2. Darsey Litzenberger‏ @DLitz 6 Nov 2014
          Replying to @bascule

          @bascule Sure, but the failsafe is a sham if we've stretched our resources too thin such that most implementations have a bug somewhere.

          1 reply 0 retweets 0 likes
        3. Tony Arcieri‏ @bascule 6 Nov 2014
          Replying to @DLitz

          @DLitz I think cipher agility has been the solution to more problems than it's caused

          1 reply 0 retweets 0 likes
        4. Darsey Litzenberger‏ @DLitz 6 Nov 2014
          Replying to @bascule

          @bascule But what you mean by cipher agility. We need meaningful protocol agility. Once we have that, we get the same benefits for free.

          0 replies 0 retweets 0 likes
        5. End of conversation

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