Secure Data Path Work with i.MX8M
summary
NXP describes implementing a Secure Data Path on the i.MX8M SoC to enable 4K PlayReady playback on Android 8.1 by combining hardware crypto, secure-world processing, and kernel driver changes. The solution adds three-zone memory partitioning and guarded peripherals so decrypted frames and keys never enter normal-world buffers, and validation uses Microsoft SL3000 and Widevine L1 DRM stacks to demonstrate end-to-end protected 4K playback and the required driver/firmware changes.
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chapters (7)
- 0:00Introduction to Secure Data Path
- 3:22Security architecture zones
- 9:18Video processing and access control
- 15:32Memory protection mechanisms
- 20:46Driver-level security implementation
- 24:17System stability and testing
- 29:04Conclusion and Q&A
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