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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. Thomas H. Ptacek‏ @tqbf 23 May 2015

      New cryptographic “right answers”. Was going to be a tweet storm but I don’t want to lose more friends.https://gist.github.com/tqbf/be58d2d39690c3b366ad …

      27 replies 189 retweets 243 likes
    2. Ryan Sleevi‏ @sleevi_ 23 May 2015
      Replying to @tqbf

      @tqbf Aww, use 256-bit keys? Talk about a way to lose friends - trying to remove the 256-bit AES by default -_-

      2 replies 0 retweets 0 likes
    3. Tony Arcieri‏ @bascule 23 May 2015
      Replying to @sleevi_

      @sleevi_ @tqbf this was pretty much the only one I disagreed with too, although I still make 256-bit keys available in our ciphersuites

      1 reply 0 retweets 0 likes
    4. Trevor Perrin‏ @trevp__ 23 May 2015
      Replying to @bascule

      @bascule @sleevi_ @tqbf for AES performance difference is small for a lot more security margin; why not use 256-bit by default?

      2 replies 0 retweets 0 likes
    5. Tony Arcieri‏ @bascule 23 May 2015
      Replying to @trevp__

      @trevp__ @sleevi_ @tqbf we observed about a 30-40% performance hit on our current SSL terminators / LB going from 128-bit to 256-bit AES...

      2 replies 0 retweets 0 likes
    6. Tony Arcieri‏ @bascule 23 May 2015
      Replying to @bascule

      @trevp__ @sleevi_ @tqbf ...given we currently scale vertically there (trying to fix that) and plan for 10X capacity, it's pretty substantial

      1 reply 0 retweets 0 likes
      Tony Arcieri‏ @bascule 23 May 2015

      @trevp__ @sleevi_ @tqbf what would break AES-128 but not AES-256 and also wouldn't just generally break TLS key exchange? (e.g. QCs)

      12:21 PM - 23 May 2015
      • 1 Like
      • Kevin 🏳️‍🌈
      1 reply 0 retweets 1 like
        1. Trevor Perrin‏ @trevp__ 23 May 2015
          Replying to @bascule

          @bascule @sleevi_ @tqbf Cryptanalysis to 10 rounds but not 14. If you're constrained stick w/128, but 256 is a good default for most

          0 replies 0 retweets 0 likes
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