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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 16 Jan 2020
      • Report Tweet
      • Report NetzDG Violation

      Hector Martin Retweeted Matthew Green

      Thread about numeric passcode strength on iPhones. And *this* is why I consider my rooted Android phone to be more secure than iPhones under a whole category of attack scenarios. Because I can use separate 25-character full ASCII *startup* password and an 8-digit *unlock* code.https://twitter.com/matthew_d_green/status/985885001542782978 …

      Hector Martin added,

      Matthew Green @matthew_d_green
      Guide to iOS estimated passcode cracking times (assumes random decimal passcode + an exploit that breaks SEP throttling): 4 digits: ~13min worst (~6.5avg) 6 digits: ~22.2hrs worst (~11.1avg) 8 digits: ~92.5days worst (~46avg) 10 digits: ~9259days worst (~4629avg)
      Show this thread
      10 replies 12 retweets 57 likes
      Show this thread
    2. Hector Martin‏ @marcan42 16 Jan 2020
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      Sure, you can try to attack my phone from a powered-but-locked state, but if you screw up and it reboots, or if you attempt any boot chain attacks, or if the battery runs out, you are *not* getting in. Period.

      1 reply 1 retweet 7 likes
      Show this thread
    3. Hector Martin‏ @marcan42 16 Jan 2020
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      I don't know why nobody offers this option of split FDE/unlock codes by default (neither iPhones nor stock Android). It's such a massive no-brainer to increase security to basically "unbreakable" under an entire class of practical attack scenarios.

      3 replies 1 retweet 18 likes
      Show this thread
    4. shuffle2‏ @shuffle2 16 Jan 2020
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      Replying to @marcan42

      If it were more common, then attackers would think very carefully before allowing the phone to reach a state where they need to go through boot. You're also assuming there's no alternate (remote/0click) way in under lock.

      1 reply 0 retweets 2 likes
      Hector Martin‏ @marcan42 16 Jan 2020
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      Replying to @shuffle2

      I'm not saying there is no other way in, I'm saying this eliminates the entire class of boot chain exploits.

      9:20 PM - 16 Jan 2020
      • 1 Like
      • Just Zis Guy, You Know?
      0 replies 0 retweets 1 like

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