NBN ISO/IEC 23001-7:2021

NBN ISO/IEC 23001-7:2021

Information technology — MPEG systems technologies — Part 7: Common encryption in ISO base media file format files ISO/IEC 23001-7:2016

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Détails

This part of ISO/IEC 23001 specifies common encryption formats for use in any file format based on ISO/IEC 14496-12. File, track, and track fragment metadata is specified to enable multiple digital rights and key management systems (DRMs) to access the same common encrypted file or stream. This part of ISO/IEC 23001 does not define a DRM system. The AES-128 symmetric block cipher is incorporated by reference to encrypt elementary stream data contained in media samples. Both AES counter mode (CTR) and Cipher Block Chaining (CBC) are specified in separate protection schemes. Partial encryption using a pattern of encrypted and clear blocks is also specified in separate protection schemes. The identification of encryption keys, Initialization Vector storage and processing is specified for each scheme. Subsample encryption is specified for NAL structured video, such as AVC and HEVC, to enable normal processing and editing of video elementary streams prior to decryption. An XML representation is specified for important common encryption information so that it can be included in XML files as standard elements and attributes to enable interoperable license and key management prior to media file download.
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Informations supplémentaires

Auteur Bureau de Normalisation Belge (NBN)
Edité par NBN
Type de document Norme
Date annulation 2021-12-10
ICS 35.040 : Jeux de caractères et codage de l'information
Remplacé par NBN ISO/IEC 23001-7:2023
Modifié par NBN ISO/IEC 23001-7:2016/A1:2021
Historique Yes
Mot-clé ISO/IEC 23001-7, ISO/IEC 23001-7:2021