Common Encryption Scheme

Formally known as ISO/IEC 23001-7:2012, but informally as MPEG System Part 7 or the abbreviation CENC, the Common Encryption Scheme is a standards-based approach to provide encryption and key-mapping methods for any digital rights management (DRM) system used with the ISO Base Media File Format (see ISO BMFF). Rather than providing the rights management itself, CENC defines encryption-related metadata in a standard format, allowing for consistent decryption of protected streams