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In a first, researchers extract secret key used to encrypt Intel CPU code
- mdaniel 6y agoGiven a magic wand, I would update the link URL to not take one directly to the comments section
- anfilt 6y agoOoops, my bad. Sadly, I can only update the title.
- efreak 6y agoIt's somewhat understandable; on Ars, you can go to comments view and expand the full story, then forget you're actually on the comments.
- gpav 6y agohttps://arstechnica.com/gadgets/2020/10/in-a-first-researchers-extract-secret-key-used-to-encrypt-intel-cpu-code/ https://arstechnica.com/gadgets/2020/10/in-a-first-researche...
- pontifier 6y agoI seem to recall hearing that some CPUs were hobbled or otherwise limited by software for product diferentiation, but were otherwise identical. I wonder if this can be used to unlock additional cores or features on some CPUs.
- dragosmocrii 6y agothey are not necessarily identical. however during fabrication, there might be deffects in some cores, so Intel can disable some cores and market it as a lower end product. it is called binning
- rasz 6y agobinning locking down multiplier change? lets not kid ourselves
- brokenmachine 6y agoAs I understand it, this allows the researchers to decrypt the microcode but not to sign their own modified microcode, is that correct?