AMD PSB Vendor Locks EPYC CPUs for Enhanced Security at a Cost

Re:AMD PSB Vendor Locks EPYC CPUs for Enhanced Security at a... by argb on Wednesday September 09, 2020 @06:22AM (#24419459)

AMD, you removed the TrueAudio block from your older Radeon GPUs, couldn't you cut the PSP and implement some of its functionality using logic instead of a CPU? So the first thing to boot will be an x86 core, as it did in the old days. A physical jumper can be used to disable the security functions and remote attestation (to a server on the LAN) can be used to determine if CPUs are running in secure mode or not? Thus satisfying the needs of corporate users?

Removing the PSP will eliminate the negative PR it creates together with the associated security risk of having a secret part of the CPU where malware can hide.

On GPUs HDCP functionality can be implemented with ROM-based microcontrollers as it did on older hardware?

[ Parent | on HN ]

Re:AMD PSB Vendor Locks EPYC CPUs for Enhanced Security at a... by argb on Wednesday September 09, 2020 @06:32AM (#24419532)

In many jurisdictions the product has to be 'fit for purpose', should the PSP be cracked and a hacker able to use it to assist malware wouldn't that make AMD's product not fit for purpose???

[ Parent | on HN ]