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    1. Martin Kleppmann‏ @martinkl 13 Jan 2017

      WhatsApp issue (https://www.theguardian.com/technology/2017/jan/13/whatsapp-backdoor-allows-snooping-on-encrypted-messages …) isn't really a backdoor, but it highlights the need for key transparency (https://security.googleblog.com/2017/01/security-through-transparency.html …)

      1 reply 47 retweets 43 likes
    2. Signal‏ @signalapp 14 Jan 2017
      Replying to @martinkl

      You don't think it raises new questions for those systems? If people don't like "advisory" notifications, won't they hate CONIKS?

      1 reply 0 retweets 1 like
    3. Martin Kleppmann‏ @martinkl 15 Jan 2017
      Replying to @signalapp @whispersystems

      Why would CONIKS mean more advisory notif's? Key change is still possible—just auditable—so malicious change is discouraged.

      1 reply 0 retweets 1 like
    4. Signal‏ @signalapp 17 Jan 2017
      Replying to @martinkl

      Yes but the same could be said for non-blocking notifications, and people seem to think that's not good enough.

      1 reply 0 retweets 0 likes
    5. Martin Kleppmann‏ @martinkl 17 Jan 2017
      Replying to @signalapp @whispersystems

      Blocking what? Retransmission of in-flight messages? Notification style seems independent of whether key change is auditable

      1 reply 0 retweets 0 likes
      Signal‏ @signalapp 17 Jan 2017
      Replying to @martinkl

      In this case people are told a key change occurred, the objection is that it's after the fact. CONIKS is even more so.

      7:33 AM - 17 Jan 2017
      • 1 Retweet
      • 1 Like
      • Scott Francis ن
      1 reply 1 retweet 1 like
        1. New conversation
        2. Greg Slepak @taoeffect@mstdn.io‏ @taoeffect 17 Jan 2017
          Replying to @signalapp

          .@whispersystems @martinkl CONIKS, implemented correctly, is way more secure than what Signal/WhatsApp is doing.

          2 replies 0 retweets 0 likes
        3. Greg Slepak @taoeffect@mstdn.io‏ @taoeffect 17 Jan 2017
          Replying to @taoeffect

          .@whispersystems @martinkl And that's not the objection. The objection is there's no way to distinguish legit key changes.

          1 reply 0 retweets 0 likes
        4. Greg Slepak @taoeffect@mstdn.io‏ @taoeffect 17 Jan 2017
          Replying to @taoeffect

          .@whispersystems @martinkl without manual verification, which many of my friends have no idea how to do since you introduced security codes

          1 reply 0 retweets 0 likes
        5. Greg Slepak @taoeffect@mstdn.io‏ @taoeffect 17 Jan 2017
          Replying to @taoeffect

          .@whispersystems @martinkl CONIKS (correctly done) & blockchains can both make manual verification unnecessary while providing same security

          1 reply 0 retweets 0 likes
        6. Greg Slepak @taoeffect@mstdn.io‏ @taoeffect 17 Jan 2017
          Replying to @taoeffect

          .@martinkl Key Transparency doesn't help this problem much, but CONIKS does/can. @whispersystems

          1 reply 0 retweets 0 likes
        7. Martin Kleppmann‏ @martinkl 17 Jan 2017
          Replying to @taoeffect @whispersystems

          Agree with your assessment. But I thought Key Transparency was an implementation of CONIKS — am I mistaken?

          1 reply 0 retweets 0 likes
        8. Greg Slepak @taoeffect@mstdn.io‏ @taoeffect 17 Jan 2017
          Replying to @martinkl @whispersystems

          Greg Slepak @taoeffect@mstdn.io Retweeted Greg Slepak @taoeffect@mstdn.io

          Your mistake was trusting Google to accurately describe what they are doing. 😜https://twitter.com/taoeffect/status/821241852615528448 …

          Greg Slepak @taoeffect@mstdn.io added,

          Greg Slepak @taoeffect@mstdn.io @taoeffect
          Replying to @zmanian
          It's not TOFU-based the way CONIKS is. The server can muck with your keys all they want.
          4 replies 0 retweets 2 likes
        9. Martin Kleppmann‏ @martinkl 17 Jan 2017
          Replying to @taoeffect

          Oh. Guess I need to actually look at the code then. 😝

          1 reply 0 retweets 0 likes
        10. 1 more reply

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