sbctl VS cryptboot

No, this isn't true nor correct.

Secure Boot and TPM do offer tangible security benefits and is security features you can take ownership of.

Secure Boot allows your own key hierarchy, and TPM allows you to take ownership.

The linked boot disk isn't really proof that Secure Boot is useless. If you don't set a MOKManager password (as you should), and you change the security state of the machine while present at the keyboard. Yes you can boot things.

This is intended to make sure people can actually decide to trust things. And having insecure defaults makes this less useful. Not very surprising.

TPMs could also prevent attacks like this on your machine.

Incidentally I've invested quite a bit of time in making user-friendly Secure Boot tooling as well. https://github.com/Foxboron/sbctl

No problem! The sbctl package ships with a pretty extensive hook out of the box (https://github.com/Foxboron/sbctl/blob/master/contrib/pacman/ZZ-sbctl.hook). It's been very reliable for automatically resigning .efi executables after updates for me.

sbctl verify returns failed to find EFI system partition despite it definitely is there. It's the same issue as this but remounting or restarting doesn't fix it.

lol

Must actually prevent unsigned images from booting

sudo dnf install asciidoc golang -y VERSION=0.11 cd /tmp curl -L "https://github.com/Foxboron/sbctl/releases/download/${VERSION}/sbctl-${VERSION}.tar.gz" | tar zxvf - cd "sbctl-${VERSION}" make sudo make install cd ~

By far the easiest is to use sbctl to generate, install and use keys to sign your efi images. You can use mkinitcpio to build the unified kernels automatically and a pacman trigger to rerun the sbctl signing when the kernel is updated. Pretty straightforward (once you've done it once).

The question is whether you have any UEFI drivers or not. If they're in the ESP you can just look there to check, but UEFI drivers can also be loaded from PCI cards or baked in the firmware itself.

If you're using a TPM for Secure Boot, you can use the command in https://github.com/Foxboron/sbctl/wiki/FAQ#option-rom to know for sure.

I just completely cheated by using cryptboot. Then it is as simple as cryptboot-efikeys create, then to enroll them into your eufi, cryptboot-efikeys enroll and finally to sign any efi executable (or any file), cryptboot-efikeys sign $FILE. There are other helper scripts, but I don't use them. Full documentation is on their GitHub: https://github.com/xmikos/cryptboot. Good luck!

Prevent evil maid by bringing your devices everywhere. Or you can just switch to GNU/Linux and add https://github.com/xmikos/cryptboot

I think it was this one: https://github.com/xmikos/cryptboot

Also, I am pretty sure that you can only have encrypted /boot if you use GRUB. The point of doing so is not really to make sure nobody reads it (there isn't anything interesting on /boot by default), but to make sure that nobody can tamper with it (ignoring the encryption vs authenticated encryption discussion). However, you still have to make sure nobody can tamper with GRUB itself. You might want to check out https://github.com/xmikos/cryptboot if this sounds interesting. Also, there are similar solutions that don't use encrypted /boot, for example booting from signed EFISTUBs, see https://wiki.archlinux.org/index.php/Unified_Extensible_Firmware_Interface/Secure_Boot#Implementing_Secure_Boot. Also, I don't actually use this kind of setup personally (albeit I'd like to one day), and I am certainly not a security expert, so take this whole paragraph with a big grain of salt, and double check with somebody who actually knows what they are talking about.