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by LeifCarrotson 3203 days ago
DRM can't work because the math doesn't distinguish between receiving and decrypting content for a legal purpose like viewing it, and doing the same for an illegal purpose like copying and distributing it. If nothing else, there's the analog hole of recording the screen (which could be done in software).

If it did work, that would be a legitimate reason to include these potentially dangerous, un-inspectable DRM features. But it fundamentally can't, so foisting this security risk on everyone seems misguided.

1 comments

A chain of hardware, all with private keys in a 'secure enclave' / 'TPM' can deliver DRM that is as unbreakable as the private keys are hidden and tampering detection is functioning. Really, the only hole that can't be patched is analogue recording. Realistically, tampering with the screen or cable is probably the easiest target. Though, compromising the TPM would have more widespread effects.