logoalt Hacker News

Hoodedcrowyesterday at 7:44 PM1 replyview on HN

Would like to read a writeup on this, I was certain it was going to be something like this from the app's announcement.

Also I recall a discussion on Graphene's forums that DRM ID is not only retained there, but stays the same across profiles.


Replies

coppsilgoldyesterday at 7:51 PM

I simplified the process in my description. The DRM ID Android has is not what I was referring to.

I was referring to the static private key that is stored in the silicon. At any time an application can initiate a license request process using DRM APIs which will elicit an unchangeable HWID from your device. The only protection is that it will be encrypted for an authorized license server private key so collusion may be required (intel agencies almost certainly sourced 'authorized' private keys for themselves). Google or Apple also has the option to authorize keys for themselves. In 'theory' all such keys should be stored in "trusted execution environments" on license servers and not divulge client identities for whatever that's worth: <https://tee.fail>.