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dguido's profile
Dan Guido
Dan Guido
Dan Guido
@dguido

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Dan Guido

@dguido

CEO @trailofbits, organizer @EmpireHacking, director @hack_secure. Open DMs.

Brooklyn, NY
trailofbits.com
Joined April 2008

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    1. CopperheadOS‏ @CopperheadOS 1 Jul 2016
      Replying to @CopperheadOS

      .@dangoodin001 There's a widespread misunderstanding that Google is the OS vendor for other Android devices. They lack keys AND sources.

      1 reply 1 retweet 3 likes
    2. CopperheadOS‏ @CopperheadOS 1 Jul 2016
      Replying to @CopperheadOS

      .@dangoodin001 There's one party with the keys: the OEM. It's not different than Apple. Apple can similarly flash Secure Enclave firmware.

      1 reply 2 retweets 4 likes
    3. CopperheadOS‏ @CopperheadOS 1 Jul 2016
      Replying to @CopperheadOS

      .@dangoodin001 Secure Enclave is not only a piece of hardware. Apple can still provide what the FBI demanded with newer hardware too...

      2 replies 0 retweets 2 likes
    4. CopperheadOS‏ @CopperheadOS 1 Jul 2016
      Replying to @CopperheadOS

      .@dangoodin001 For iPhone involved in the FBI case there was also no Secure Enclave. The TEE model is comparable to SE, not that weaker one.

      2 replies 0 retweets 0 likes
    5. Dan Guido‏ @dguido 1 Jul 2016
      Replying to @CopperheadOS @dangoodin001

      guy just used a software-only exploit chain to recover a key described as "hardware-bound." sounds diff to me.

      1 reply 0 retweets 1 like
    6. Dan Guido‏ @dguido 1 Jul 2016
      Replying to @dguido @CopperheadOS @dangoodin001

      Android made a mistake by deriving FDE based off the SHK key and then storing it in software. Fundamental diff.

      2 replies 0 retweets 3 likes
    7. Dan Guido‏ @dguido 1 Jul 2016
      Replying to @dguido @CopperheadOS @dangoodin001

      As far as I understand it, you even saw the risk of that approach and changed it in Copperhead, right?

      1 reply 0 retweets 1 like
    8. CopperheadOS‏ @CopperheadOS 1 Jul 2016
      Replying to @dguido @dangoodin001

      CopperheadOS allows and encourages using a separate disk encryption passphrase instead of relying on obfuscation.

      1 reply 0 retweets 1 like
    9. CopperheadOS‏ @CopperheadOS 1 Jul 2016
      Replying to @CopperheadOS @dguido @dangoodin001

      Since the TEE/SE stuff is exactly that: obfuscation with a lot more sophistication assumed than it has in reality.

      1 reply 0 retweets 0 likes
    10. Dan Guido‏ @dguido 1 Jul 2016
      Replying to @CopperheadOS @dangoodin001

      you're dancing around the issue. Apple UID key is kept in hardware. Android FDE kept in software.

      1 reply 0 retweets 1 like
      Dan Guido‏ @dguido 1 Jul 2016
      Replying to @dguido @CopperheadOS @dangoodin001

      Apple's interface to the SEP which brokers UID key is simplified, unlike QSEE etc which gets 0day dropped on it

      5:59 PM - 1 Jul 2016
      0 replies 0 retweets 0 likes

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