Easier Way to take control of UEFI secure boot platform

All the tools are in the git repository

http://git.kernel.org/?p=linux/kernel/git/jejb/efitools.git;a=summary

But for ease of consumption, this is now packaged and build by the opensuse build server as installable rpm files. If you install the efitools-0.1.rpm package, it will automatically provision you with Platform Key, Key Exchange Key and db key.  The README file in /usr/share/efitools/ explains what’s going on, but you can also do a quick lockdown of your UEFI plaform (or simply boot out the old keys) if you copy all the efi files in /usr/share/efitools/efi/ and the *.auth files from /usr/share/efitools/keys/ into a partition accessible to the efi boot loader.  Then in Setup Mode (must be Setup Mode to alter the keys) do

UpdateVars db db.auth

UpdateVars KEK KEK.auth

UpdateVars PK PK.auth

After the PK update, the platform should once again be in user mode.  Verify by trying to run the HelloWorld efi binary (should fail) and it’s signed counterpart HelloWorld-signed (should print Hello World!).

 

 

One thought on “Easier Way to take control of UEFI secure boot platform

  1. Pingback: Linux Foundation UEFI Secure Boot System for Open Source | Linux-Support.com

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