From 42c3c927deb1803f4c32ff399b0b3bd91517a736 Mon Sep 17 00:00:00 2001 From: Lingkai Dong Date: Thu, 15 Apr 2021 12:10:51 +0100 Subject: [PATCH] Fix DeviceKey documentation regarding RoT Since the commit 0e7a53c DeviceKey Root of Trust generation refactored. the Root of Trust is not automatically generated anymore. --- drivers/device_key/README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/device_key/README.md b/drivers/device_key/README.md index ac0bd0496d..7593664232 100644 --- a/drivers/device_key/README.md +++ b/drivers/device_key/README.md @@ -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