4 ms·
I’d say that a key stored on hardware is not merely obfuscated, when that hardware is designed to prevent you from recovering the key.
by klodolph 4y ago
I’d say that a key stored on hardware is not merely obfuscated, when that hardware is designed to prevent you from recovering the key.
- Nextgrid 4y agoThe hardware ultimately has to decrypt and play the content, so you can use it as a decryption oracle even if you can't extract the key itself.
- klodolph 4y agoSort of, within constraints. L1 both decrypts and decodes, so you can’t really use it as a pure decryption oracle, but it doesn’t matter if you’re going to re-encode it anyway. Not that it really matters, since HDCP has been cracked. There are a lot of holes here and a lot of problems with DRM.