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Merge pull request #14550 from LDong-Arm/devicekey_doc 

Fix DeviceKey documentation regarding RoT
pull/14569/head
Martin Kojtal 2021-04-28 12:33:39 +01:00 committed by GitHub
parent 49b018c3db 42c3c927de
commit 752eaedebe
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drivers/device_key/README.md
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@ -17,7 +17,7 @@ The characteristics required by this RoT are:
The DeviceKey feature keeps the RoT key in internal storage, using the KVStore component. Internal storage provides protection from external physical attacks to the device.
The RoT is generated at the first use of DeviceKey if the True Random Number Generator(TRNG) is available in the device. If no TRNG is available, you must pass the injected RoT key to the DeviceKey before you call the key derivation API.
The root of trust must be created before its first use. Otherwise, the key derivation API fails.
### Key derivation API