HAL RNG Abstraction missing?

[spatialerror]

I browsed through the code looking for an uniform way to get random numbers from HWRNG or a SWPRNG ^^ doesnt look like thats implemented but it would be nice to have at least on the STM407 an easy way for accessing the TRNG

would be a minimal modification of the api i guess to add it

[Giovanni]

Hi,

This feature is very STM32F4-specific but it could be added as a platform-specific driver. Thanks for the hint.

Giovanni

[faisal]

How do you feel on about having a standard TRNG HAL driver, now that SAMA5D2x also has a TRNG?

[Giovanni]

Hi,

It is in the crypto HAL driver in 18.2.0, currently the STM32 implementation is missing, it could be added.

Giovanni

[podhrmic]

Hi,

I noticed the crypto hal driver is implemented only for STM32F7. Are you planning to implement (at least the RNG) for STM32F4?

Regards
M

[Giovanni]

Hi,

Now there is a new TRNG driver in HAL (trunk version), the functionality will be removed from crypto. It should work on F4 but have not tested it on all platforms.

There is a demo under /testhal/STM32/multi/TRNG.

Giovanni

[podhrmic]

Hi Giovanni, thanks for the info.