CC310 entropy driver
You can use the CC310 entropy driver (entropy_cc310) to generate random data using the Arm CryptoCell CC310 hardware available on the following Nordic SoCs/SiPs:
nRF52840
nRF5340
nRF9160
When used with nRF52840, the CC310 entropy driver gathers entropy by using the CC310 hardware through the nrf_cc3xx_platform library. When used with nRF5340 or nRF9160, the driver behavior depends on whether it is used in an application with or without Cortex-M Security Extensions (CMSE):
In an application without CMSE, or when the Secure Partition Manager (SPM) is not used, the CC310 entropy driver gathers entropy by using the CC310 hardware through the nrf_cc3xx_platform library.
In an application with CMSE, the driver gathers entropy through the Secure Services library.
For more details on CMSE, see Processing environments.
API documentation
zephyr/include/drivers/entropy.h
(in the nRF Connect SDK project)drivers/entropy/entropy_cc310.c
The entropy_cc3xx driver implements the Zephyr Entropy API.