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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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    Tony Arcieri‏ @bascule 22 Feb 2015

    Whenever I complain about ASN.1 there's this sort of "ASN.1 is fine" backlash and then I see shit like this: http://trac.tools.ietf.org/wg/trans/trac/ticket/14 …

    1:41 PM - 22 Feb 2015
    • 3 Retweets
    • 5 Likes
    • bruno maggi Brian T. Rice Sean Cribbs Alexandre Dulaunoy glynwintle Erica Ehrhardt InfoSec Sam Vimes
    4 replies 3 retweets 5 likes
      1. New conversation
      2. Tony Arcieri‏ @bascule 22 Feb 2015
        Replying to @bascule

        Yo dawg, I heard you like ASN.1pic.twitter.com/HZnSk07Er4

        2 replies 27 retweets 29 likes
      3. Dan McDonald‏ @kebesays 22 Feb 2015
        Replying to @bascule

        @bascule @AlecMuffett ASN.1 is Satan's work.

        1 reply 2 retweets 2 likes
      4. Ryan Sleevi‏ @sleevi_ 22 Feb 2015
        Replying to @kebesays

        @kebesays @bascule @AlecMuffett Playing with JSON is begging yourself for DOS or security fail. Case in point: JOSE and the crazy schemas

        2 replies 0 retweets 0 likes
      5. Tony Arcieri‏ @bascule 22 Feb 2015
        Replying to @sleevi_

        @sleevi_ @kebesays @AlecMuffett and the corresponding analogue for ASN.1 is RCE?

        1 reply 0 retweets 1 like
      6. Ryan Sleevi‏ @sleevi_ 22 Feb 2015
        Replying to @bascule

        @bascule @kebesays @AlecMuffett With DER parsing, a little fuzzing and ASAN goes a long way. With JSON, it's logic bugs all the way down.

        2 replies 0 retweets 0 likes
      7. Tony Arcieri‏ @bascule 22 Feb 2015
        Replying to @sleevi_

        @sleevi_ @kebesays @AlecMuffett we've been systematically replacing CMS with JWE/JWS throughout our infrastructure and it feels great

        2 replies 0 retweets 0 likes
      8. mik‏ @mik235 22 Feb 2015
        Replying to @bascule

        @bascule @sleevi_ @kebesays @AlecMuffett I go for CSV, and if there's a new field conflict we sort it out with rock-paper-scissors

        1 reply 0 retweets 0 likes
      9. Tony Arcieri‏ @bascule 22 Feb 2015
        Replying to @mik235

        @mik235 @sleevi_ @kebesays @AlecMuffett that particular property of JSON is definitely a LANGSEC violation...

        1 reply 0 retweets 0 likes
      10. 6 more replies
      1. New conversation
      2. Geoffroy Couprie‏ @gcouprie 22 Feb 2015
        Replying to @bascule

        @bascule I thought the consensus was that ASN.1 is too complex for us mere humans

        2 replies 0 retweets 0 likes
      3. Tony Arcieri‏ @bascule 22 Feb 2015
        Replying to @gcouprie

        @gcouprie there's a growing movement that ASN.1 should be "deprecated" and we should use e.g. JOSE for future protocols, I think/hope

        4 replies 0 retweets 0 likes
      4. Linus Nordberg‏ @ln4711 22 Feb 2015
        Replying to @bascule

        @bascule @gcouprie wait, are you ignoring the new binary way of life brought by http2!

        1 reply 0 retweets 0 likes
      5. Tony Arcieri‏ @bascule 22 Feb 2015
        Replying to @ln4711

        @ln4711 @gcouprie I like @capnproto too ;)

        1 reply 0 retweets 0 likes
      6. Geoffroy Couprie‏ @gcouprie 22 Feb 2015
        Replying to @bascule

        @bascule @ln4711 @capnproto there's nothing wrong with binary protocols. The problem comes from the awful parsing tools :)

        1 reply 0 retweets 0 likes
      7. Tony Arcieri‏ @bascule 22 Feb 2015
        Replying to @gcouprie

        @gcouprie @ln4711 @CapnProto Heimdal generates ASN.1 parsers, but only in C, and not general enough to cover crap like the OP

        1 reply 0 retweets 0 likes
      8. Geoffroy Couprie‏ @gcouprie 22 Feb 2015
        Replying to @bascule

        @bascule @ln4711 that's the problem when you give people serialization formats instead of building a protocol from scratch: they get fancy

        1 reply 0 retweets 0 likes
      9. Geoffroy Couprie‏ @gcouprie 22 Feb 2015
        Replying to @gcouprie

        @bascule @ln4711 XML and EDIFACT are good warnings: useful serializers, but don't let people get clever with them

        1 reply 0 retweets 0 likes
      10. 2 more replies
      1. Linus Nordberg‏ @ln4711 22 Feb 2015
        Replying to @bascule

        @bascule i hear it's like democracy, the least bad option

        0 replies 0 retweets 0 likes
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      1. today is 2016-12-719‏ @atax1a 22 Feb 2015
        Replying to @bascule

        @bascule mmm, yeah, any encoding where they specify "ambiguous encoding/BER", "nonambiguous encoding/DER" and "xml encoding" is probably bad

        0 replies 0 retweets 0 likes
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