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rootkovska's profile
Joanna Rutkowska
Joanna Rutkowska
Joanna Rutkowska
Verified account
@rootkovska

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Joanna RutkowskaVerified account

@rootkovska

Strategy & security at @golemproject. Previously: founder of @QubesOS and Invisible Things Lab. Distrusts computers.

Warsaw
blog.invisiblethings.org
Joined July 2014

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    1. Rene Mayrhofer‏ @rene_mobile Oct 20

      Rene Mayrhofer Retweeted Joanna Rutkowska

      Oh yes, if we could have such a cross-OS standard for signed metadata in a separate stream (detached), multiple signatures for reproducible builds would be much easier to accomplish.https://twitter.com/rootkovska/status/1053774418814607361 …

      Rene Mayrhofer added,

      Joanna RutkowskaVerified account @rootkovska
      Replying to @tehjh
      Yeah, also not very compatible with `gpg --verify`. But perhaps no one verifies binaries manually anyway... Perhaps a (cross-OS) standard for signed metadata for distributable binaries would make sense? (author ID, URL, timestamp, sig(s))
      1 reply 0 retweets 3 likes
    2. Ryan Sleevi‏ @sleevi_ Oct 20
      Replying to @rene_mobile

      I’m not sure why the focus on cross-OS? Generally the signature scheme is coupled to the (per-OS) executable format/delivery mechanism/build artifact. Meaning you won’t inherently get cross-OS, you just explicitly deign to support multiple OSes.

      2 replies 0 retweets 2 likes
    3. Joanna Rutkowska‏Verified account @rootkovska Oct 21
      Replying to @sleevi_ @rene_mobile

      One reason is that one could verify the same binaries on different platforms, e.g. as part of a forensics effort. So this is more about giving binaries a universally-verifiable "ID".

      1 reply 0 retweets 0 likes
    4. Ryan Sleevi‏ @sleevi_ Oct 21
      Replying to @rootkovska @rene_mobile

      Isn’t that like wishing for a universal executable format? If the executables can be reordered with the same semantic meaning, as they can on most platforms, it seems like it would defeat the goal unless there was such a format and/or per-OS+format knowledge

      1 reply 0 retweets 1 like
      Joanna Rutkowska‏Verified account @rootkovska Oct 22
      Replying to @sleevi_ @rene_mobile

      I don't think it'd have to be bitwise-identical, but at least semantically standardized, so that the same kind of info was always included, rather than leaving this to app and/or OS vendors to decide what to include (just URL? just signature? etc).

      12:47 AM - 22 Oct 2018
      0 replies 0 retweets 0 likes

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