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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 3 Jan 2019
      • Report Tweet
      • Report NetzDG Violation

      Anyway, if you rely on BitLocker in TPM mode (boot without PIN), you should know that anyone can steal your computer, sniff 32 bytes off of the LPC bus, stick them into libbde, and decrypt your disk. Yes, it's that easy. Solder 7 wires to $favorite_fpga_board, decrypt drive.

      29 replies 614 retweets 1,105 likes
      Show this thread
    2. Mickey‏ @HackingThings 3 Jan 2019
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      Replying to @marcan42 @depletionmode

      I wish chassis intrusion detection would wipe the tpm automatically

      5 replies 0 retweets 15 likes
    3. Hector Martin‏ @marcan42 3 Jan 2019
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      Replying to @HackingThings @depletionmode

      What you want is an HSM, not a TPM.

      2 replies 0 retweets 24 likes
    4. Mickey‏ @HackingThings 3 Jan 2019
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      Replying to @marcan42 @depletionmode

      NO, I want the TPM to do it! 🤨pic.twitter.com/dGnP0s095y

      1 reply 0 retweets 14 likes
    5. Zaolin‏ @_zaolin_ 3 Jan 2019
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      Replying to @HackingThings @marcan42 @depletionmode

      Or DH key exchange secured communication between your TPM and OS. AFAIK this is a TPM 2.0 feature

      1 reply 0 retweets 8 likes
    6. Hector Martin‏ @marcan42 3 Jan 2019
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      Replying to @_zaolin_ @HackingThings @depletionmode

      No root of trust, still vulnerable to MITM attack.

      1 reply 0 retweets 11 likes
    7. Zaolin‏ @_zaolin_ 3 Jan 2019
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      Replying to @marcan42 @HackingThings @depletionmode

      EK certificate?

      1 reply 0 retweets 5 likes
      Hector Martin‏ @marcan42 3 Jan 2019
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      Replying to @_zaolin_ @HackingThings @depletionmode

      x86 secureboot is perpetually a joke. You're basically screwed no matter what.

      10:39 AM - 3 Jan 2019
      • 2 Retweets
      • 36 Likes
      • [ColeJ] Helene N. Knudsen Eloy Eduardo Soares foo midnight Brian T. Rice Chris Cunningham ダークソール
      2 replies 2 retweets 36 likes
        1. New conversation
        1. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 3 Jan 2019
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          Replying to @marcan42 @_zaolin_ and

          Let me get this straight, you're telling me it's a bad thing that I have all these signed EFI blobs that can be made to run automatically during the boot process and patch my OS after decryption? Idk man, sounds fake.

          1 reply 2 retweets 25 likes
        2. Graham Sutherland (Polynomial^DSS)‏ @gsuberland 3 Jan 2019
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          Replying to @hedgeberg @marcan42 and

          😂pic.twitter.com/2h39CHJ1pg

          1 reply 0 retweets 12 likes
        3. Show replies
        1. Michal Stanek @ 36c3‏ @3lbios 4 Jan 2019
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          Replying to @marcan42 @_zaolin_ and

          Yeah secure boot makes a lot more sense if you use TEE, like ARM's TrustZone (where all the crypto is done), while on x86 it doesn't really give any concrete security guarantees. Just the most basic protection against rootkits, etc.

          0 replies 0 retweets 0 likes
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