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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
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      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
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    2. Blueteamer‏ @blueteamer 7 Jan 2019
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      Replying to @marcan42

      So I’m still digesting this. Am I understanding this correctly that with TPM only you can sniff the decryption key and therefore decrypt the drive? You may not know the windows password, but wouldn’t need to brute force because you can decrypt the drive and copy out what you want

      1 reply 0 retweets 0 likes
    3. Hector Martin‏ @marcan42 7 Jan 2019
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      Replying to @blueteamer

      Yes. Or just decrypt the drive, use existing tools to remove the Windows password, boot it and log in.

      1 reply 0 retweets 0 likes
    4. Blueteamer‏ @blueteamer 7 Jan 2019
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      Replying to @marcan42

      Like booting to nordahl or similar and blanking the local admin pw? With Secure Boot enabled would that work? I spose its a bit of a moot point. Attacker can decrypt drive...

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 7 Jan 2019
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      Replying to @blueteamer

      Secure Boot is irrelevant. Once the drive is decrypted it's decrypted.

      10:41 PM - 7 Jan 2019
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