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Additionally, modern microcode updates are both encrypted and signed blobs. Granted, it's of little use if Intel/AMD are playing the role of bad actor or if the
by joshumax 8y ago
Additionally, modern microcode updates are both encrypted and signed blobs. Granted, it's of little use if Intel/AMD are playing the role of bad actor or if the signing and decryption mechanisms are bypassed somehow; but trying to load unsigned microcode by default will result in rejection.
- jcranmer 8y agoIt's worth noting that the analysis is on old AMD microcode precisely because AMD didn't use signed microcode for a long time and so they could create custom microcode to reverse engineer what it's doing.