MPEG-CENC: Defective by Specification (2024)

What happened

You've probably heard the saying "DRM is defective by design". It's true, and I can prove it. In this paper I present DeCENC, a generic attack on the MPEG-CENC file format. DeCENC enables decryption of video files without direct knowledge of the key. The fundamental flaw involves the use of encryption without authentication - a rookie error[0], alt

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