Soooo, after a few evenings of work, I've 100% broken Widevine L3 DRM. Their Whitebox AES-128 implementation is vulnerable to the well-studied DFA attack, which can be used to recover the original key. Then you can decrypt the MPEG-CENC streams with plain old ffmpeg...
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Aren't there impossibility results for some primitives?
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source?
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New conversation -
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Hence all the DRM secrecy, and states weaponizing legal power to jail and charge million-dollar fines against those who break "digital locks".
Thanks. Twitter will use this to make your timeline better. UndoUndo
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