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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. Matthew Green‏ @matthew_d_green 19 Jan 2015
      Replying to @bascule

      @bascule Wha?

      1 reply 0 retweets 0 likes
    2. Matthew Green‏ @matthew_d_green 19 Jan 2015
      Replying to @matthew_d_green

      @bascule Wait, a signing key or some other kind of authenticating key?

      1 reply 0 retweets 0 likes
    3. Tony Arcieri‏ @bascule 19 Jan 2015
      Replying to @matthew_d_green

      @matthew_d_green the OpenPGP applet on a Yubikey gives you 3 slots: signing, encryption, and authentication...

      2 replies 0 retweets 0 likes
    4. david van duzer‏ @dvanduzer 19 Jan 2015
      Replying to @bascule

      @bascule @matthew_d_green what in jehoshaphat's name are they claiming the difference between signing and authenticating is?

      1 reply 0 retweets 0 likes
    5. Tony Arcieri‏ @bascule 19 Jan 2015
      Replying to @dvanduzer

      @dvanduzer @matthew_d_green authentication is e.g. SSH

      1 reply 0 retweets 0 likes
    6. david van duzer‏ @dvanduzer 19 Jan 2015
      Replying to @bascule

      @bascule @matthew_d_green authentication via asymmetric keys is essentially verifying a known signature. reading up on this product and ugh

      1 reply 0 retweets 0 likes
    7. Tony Arcieri‏ @bascule 19 Jan 2015
      Replying to @dvanduzer

      @dvanduzer @matthew_d_green using gpg-agent for SSH is a standard GPG feature, as are authentication keys...

      1 reply 0 retweets 0 likes
    8. david van duzer‏ @dvanduzer 19 Jan 2015
      Replying to @bascule

      @bascule @matthew_d_green there is no meaningful distinction between "authentication keys" and "signing keys" regardless of context

      2 replies 0 retweets 0 likes
    9. Tony Arcieri‏ @bascule 19 Jan 2015
      Replying to @dvanduzer

      @dvanduzer @matthew_d_green even if the signing key is your primary key?

      2 replies 0 retweets 0 likes
    10. david van duzer‏ @dvanduzer 19 Jan 2015
      Replying to @bascule

      @bascule @matthew_d_green the primitives for any asymmetric crypto are "sign/verify" and "encrypt/decrypt"

      1 reply 0 retweets 1 like
      Tony Arcieri‏ @bascule 19 Jan 2015
      Replying to @dvanduzer

      @dvanduzer @matthew_d_green there are also signing subkeys in addition to auth subkeys! :o

      8:16 PM - 19 Jan 2015
      2 replies 0 retweets 0 likes
        1. New conversation
        2. Tony Arcieri‏ @bascule 19 Jan 2015
          Replying to @bascule

          @dvanduzer @matthew_d_green also I don't make this stuff. I'm just trying to figure out how it works

          1 reply 0 retweets 0 likes
        3. david van duzer‏ @dvanduzer 19 Jan 2015
          Replying to @bascule

          @bascule @matthew_d_green oh, I'm not doubting that. keeping crypto obscure is in the commercial interest of crypto vendors.

          0 replies 0 retweets 0 likes
        4. End of conversation
        1. New conversation
        2. david van duzer‏ @dvanduzer 19 Jan 2015
          Replying to @bascule

          @bascule @matthew_d_green reading up a bit, subkeys are *roughly* similar to the function of encryption keys re: forward secrecy

          1 reply 0 retweets 0 likes
        3. Tony Arcieri‏ @bascule 19 Jan 2015
          Replying to @dvanduzer

          @dvanduzer @matthew_d_green one primary (signing) key can have multiple enrolled subkeys. It's a "has many" relationship

          1 reply 0 retweets 0 likes
        4. david van duzer‏ @dvanduzer 19 Jan 2015
          Replying to @bascule

          @bascule @matthew_d_green right, the signing key "publishes" an encryption key (by signing it) so you can airgap your identity or something

          1 reply 0 retweets 0 likes
        5. Tony Arcieri‏ @bascule 19 Jan 2015
          Replying to @dvanduzer

          @dvanduzer @matthew_d_green but they're long-lived keys, and you can also sign signing subkeys (or auth keys)

          2 replies 0 retweets 0 likes
        6. david van duzer‏ @dvanduzer 19 Jan 2015
          Replying to @bascule

          @bascule a separate operation to *sign* a subkey? not sure what else creates the relationship other than signing with the primary.

          2 replies 0 retweets 0 likes
        7. Tony Arcieri‏ @bascule 19 Jan 2015
          Replying to @dvanduzer

          @dvanduzer it's just signing a signing key, kind of like an intermediate CA

          2 replies 0 retweets 0 likes
        8. david van duzer‏ @dvanduzer 19 Jan 2015
          Replying to @bascule

          @bascule all this hullaballoo is about isolating the primary key as your DIGITAL IDENTITY which is a terrible, horrible lie.

          1 reply 0 retweets 0 likes
        9. Tony Arcieri‏ @bascule 19 Jan 2015
          Replying to @dvanduzer

          @dvanduzer see this email for my thoughts on that: https://www.mail-archive.com/messaging@moderncrypto.org/msg01296.html …

          0 replies 0 retweets 0 likes
        10. End of conversation

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