Digital rights management (DRM) method and system for intelligent operating system
US10685094B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 1, 2016 |
| Grant date | Jun 16, 2020 |
| Priority date | — |
| Expiry date | Aug 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/101
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital rights management (DRM) method for an intelligent operating system comprises: acquiring a play list of media data to be played and encrypted media data; inquiring and acquiring one or more DRM application modules, wherein the DRM application module contains an identifier of a trusted application module; requesting DRM authorization by the DRM application module from a DRM server, judging a content permission and acquiring an encrypted content encryption key (ECEK) and transmitting the ECEK to a TEE; after judging that the content permission is legitimate; decrypting the ECEK acquired by the trusted application module which is in the TEE and corresponds to the trusted application module identifier to acquire a content encryption key (CEK), and decrypting the encrypted media data by using the CEK; and storing the decrypted media data in a security cache region for decoding and outputting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.