In a first, researchers extract secret key used to encrypt Intel CPU code (arstechnica.com) 52 points by anfilt 5y ago ↗ HN
[–] mdaniel 5y ago ↗ Given a magic wand, I would update the link URL to not take one directly to the comments section [–] anfilt 5y ago ↗ Ooops, my bad. Sadly, I can only update the title. [–] efreak 5y ago ↗ It'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 5y ago ↗ https://arstechnica.com/gadgets/2020/10/in-a-first-researche...
[–] efreak 5y ago ↗ It's somewhat understandable; on Ars, you can go to comments view and expand the full story, then forget you're actually on the comments.
[–] pontifier 5y ago ↗ I 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 5y ago ↗ they 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 5y ago ↗ binning locking down multiplier change? lets not kid ourselves
[–] dragosmocrii 5y ago ↗ they 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 5y ago ↗ binning locking down multiplier change? lets not kid ourselves
[–] brokenmachine 5y ago ↗ As I understand it, this allows the researchers to decrypt the microcode but not to sign their own modified microcode, is that correct?
8 comments
[ 2.6 ms ] story [ 25.9 ms ] threadI wonder if this can be used to unlock additional cores or features on some CPUs.