Language Selection

English French German Italian Portuguese Spanish

Why UEFI secure boot is difficult for Linux

Filed under

I wrote about the technical details of supporting the UEFI secure boot specification with Linux. Despite me pretty clearly saying that this was ignoring issues of licensing and key distribution and the like, people are now using it to claim that Linux could support secure boot with minimal effort. In a sense, they're right. The technical implementation details are fairly straightforward. But they're not the difficult bit.

Secure boot requires that all code that can touch hardware be trusted

Right now, if you can run unstrusted code before the OS then you can subvert the OS. Secure boot gives you a mechanism for making sure you only run trusted code, which protects against that. So your UEFI drivers have to be signed, your bootloader has to be signed, and your bootloader must only load a signed kernel. If you've only booted trusted code then you know that your OS is safe. But, unlike trusted boot, secure boot provides no way for you to know that only trusted code was executed. That has to be ensured by OS policy.

Rest here

More in Tux Machines

Azul Zing goes live on Red Hat Enterprise Linux on Amazon Web Services

Azul Systems, the provider of Java runtime solutions, has announced that Zing, it's Java Virtual Machine, is now available as Amazon Machine Images (AMIs) running on Red Hat Enterprise Linux on Amazon Web Services. Read more

How to move the needle in open source

The intersection of those two concepts is the sweet spot to success (in my mind) in open source. Everyone wants to be a +1 in their interactions in open source, but sometimes you have to settle for being a 0 for a while until you build up enough expertise in a project. You don't want to be a -1, where you are actively hampering work from being done. However, you should be bold and inquisitive when figuring out what you want to work on in open source. People will generally help you in open source communities if they see you're passionate and willing to learn. Read more

Larry Wall Unveils Perl 6.0.0

The first thing he did was thank Craigslist "for sponsoring me these last few years". On October 5th, 2015 Larry Wall addressed a crowd of geeks at San Francisco's Exploratorium, saying he couldn't properly express his gratitude to Craigslist. Then he acknowledged how long the development arc had been for Perl 6. "As the old joke goes, Perl 6 is coming out this Christmas." Only this time, he meant it. Read more

Leftovers: KDE