ISO_IEC_23001-7_2011.pdf
ISO/IEC23001-7:2011specifiesacommonencryptionformatforuseinanyfileformatbasedonISO/IEC14496-12,theISObasemediafileformat.The'cenc'CommonEncryptionSchemespecifiesstandardencryptionandkeymappingmethodsthatcanbeutilizedbyoneormoredigitalrightsandkeymanagementsystems(DRMsystem