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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. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 29 Jul 2018
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      So, I'm going to do a bunch of reformatting etc on my laptop over the next 2 or 3 days to get it wiped and fde'd before I go to defcon, and getting it provisioned with all the ctf tooling I need. Any recs beyond just LUKS on the root partition? Should I do LUKS over swap too?

      4 replies 2 retweets 13 likes
    2. Hector Martin‏ @marcan42 29 Jul 2018
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      Replying to @hedgeberg

      The right approach is to use ephemeral encryption for swap (assuming you don't care about hibernation). There should be a way to set up a dm-crypt mapping with a random key and automatically mkswap it on boot, on your distro (Gentoo has this). No need for LUKS.

      1 reply 0 retweets 4 likes
    3. Hector Martin‏ @marcan42 29 Jul 2018
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      Replying to @marcan42 @hedgeberg

      IIRC I have the same setup on my Arch box, I can double check the config if you use that.

      1 reply 0 retweets 3 likes
    4. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 29 Jul 2018
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      Replying to @marcan42

      Yeah I would be using arch. Tbh I'm not worried that much about swap since I don't plan to have my laptop powered on between locations since sleep mode is wonky, though, so I might just, like, skip it?

      2 replies 0 retweets 1 like
    5. Hector Martin‏ @marcan42 29 Jul 2018
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      Replying to @hedgeberg

      If you have enough RAM not to need swap then just skip it. If you use swap at all then you need to encrypt it, otherwise it's a huge leak (stuff can and does stick around there).

      1 reply 0 retweets 1 like
    6. Hector Martin‏ @marcan42 29 Jul 2018
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      Replying to @marcan42 @hedgeberg

      Personally I haven't been using swap on most of my recent systems for some time now. Just dump more RAM in them.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 29 Jul 2018
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      Replying to @marcan42 @hedgeberg

      Anyway this is how you do ephemeral encrypted swap on Arch if you choose to go that route: https://wiki.archlinux.org/index.php/Dm-crypt/Swap_encryption#Without_suspend-to-disk_support …

      6:09 PM - 29 Jul 2018
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