Blogs about: Pc Architecture
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All about ACPI
Up until recently, I was the maintainer for the FreeBSD ACPI implementation. ACPI is a standard for making features like power management, which were originally in the BIOS, available to the OS to en… more →
root labs rdist
All about ACPI
Nate Lawson wrote 8 months ago: Up until recently, I was the maintainer for the FreeBSD ACPI implementation. ACPI is a standard for … more →
Interview about DRM on Security Focus
— 5 comments
Nate Lawson wrote 1 year ago: Security Focus just posted this interview of me, talking about DRM. Here are a few choice quotes. O … more →
Anti-debugging: using up a resource versus checking it
— 7 comments
Nate Lawson wrote 1 year ago: After my last post claiming anti-debugging techniques are overly depended on, various people asked h … more →
Preventing RSA cache timing attacks
— 2 comments
Nate Lawson wrote 1 year ago: It has been known for a while that side-channel information about crypto operations (i.e., timing) c … more →
Memory remanence attack analysis
— 1 comment
Nate Lawson wrote 1 year ago: You have probably heard by now of the memory remanence attack by Halderman et al. They show that it … more →
Trapping access to debug registers
Nate Lawson wrote 1 year ago: If you’re designing or attacking a software protection scheme, the debug registers are a great … more →
IOMMU - virtualization or DRM?
— 5 comments
Nate Lawson wrote 1 year ago: Before deciding how to enable DMA protection, it’s important to figure out what current and fu … more →
Protecting memory from DMA
— 5 comments
Nate Lawson wrote 1 year ago: Previously, we discussed how DMA works in the PC architecture. The northbridge is only aware of phy … more →
PC memory architecture overview
Nate Lawson wrote 1 year ago: The topics of DMA protection and a new Intel/AMD feature called an IOMMU (or VT-d) are becoming more … more →
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