A device client video stream hardware protection method

Abstract

The invention provides a hardware protection method for a video stream of a device client, which separates a safe world and a non-safe world on a device hardware system. Hardware protection middlewareis arranged between the safe world and the non-safe world. The secure world only runs trusted applications, and all sensitive data that need to be protected are stored only in the secure world. Whenthe sensitive data are exported from the secure world to the insecure world, they can only be encrypted and then saved. The hardware protection middleware comprises a CA layer, which is responsible for providing abundant interfaces to enable the DRM client framework to realize secure basic functions, so that the client can freely construct business processes and adapt to various DRM standards; anda TA layer, used to transfer secure data between the secure world and the non-secure world, in the secure world to apply for secure memory, in the non-secure world is not accessible.

Description

technical field [0001] The invention relates to a video stream security protection method for hardware of a device client. Background technique [0002] With the rapid growth of mobile Internet video applications, at the same time, the issue of copyright protection has become more and more prominent. With the increasing emphasis on the protection of intellectual property rights of digital content, the latest devices such as smart phones and tablet computers provide consumers with a wealth of video playback applications, content manufacturers or operators attach great importance to the copyright protection of video content, especially The popularity of payment models. [0003] The main feature of digital TV is the full digital processing of program production, transmission, reception and storage, which can bring rich and colorful digital content and high-quality audio and video effects to users. However, due to the full use of digital production, transmission means and digi...

AI Technical Summary

Problems solved by technology

[0007] However, since the framework APIs designed by each DRM standard are different, there is a large amount of development in the development of device clients for OEM manufacturers to adapt to so many DRM standard frameworks.

Moreover, due to the similarity of DRM framework design ideas, some resources will be wasted. OEM manufacturers develop a device client video stream hardware security protection for each DRM framework. Increase the waste of reserved secure memory and reserved secure storage, which are very valuable to SOC

Therefore, if the adaptation degree of OEM manufacturers to different DRM standards can be improved, and security verification and video stream security protection can be supported, the main contradiction of current video stream protection can be resolved.

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