F446RE Random Number Generator

[donbommelon]

I am Missing the Option Security>RNG in my the .ioc tool. Does the F446RE does not have a RNG?

i experience identical problems to Implementation of ECC on STM32f446 (Page 1) — wolfSSL — wolfSSL - Embedded SSL Library

[donbommelon]

For my L452RE it looks like this:

[Peter BENSCH]

Correct, in contrast to the STM32L452RE, the STM32F446 does not contain an RNG.

Does it answer your question?

Regards
/Peter

[donbommelon]

STM32F446RE - High-performance foundation line, Arm Cortex-M4 core with DSP and FPU, 512 Kbytes of Flash memory, 180 MHz CPU, ART Accelerator, Dual QSPI - STMicroelectronics

 why does it say it on your website?

[Peter BENSCH · Accepted solution]

Well, this could be a copy'n'paste error, for which I would like to apologise. However, only the functions and parameters in the data sheet are relevant and guaranteed.

[donbommelon]

ok thank you. do you have any instuctions on how to use wolfssl without a rng. I am struggling to get rsa encryption to run. Thank you for your time.

[Peter BENSCH]

Apart from switching to an STM32 with RNG, no.

There are methods of generating a little randomness with a PRNG, by reading in the chip temperature or other simple approaches, but this is far away from a certified TRNG and may even be enough for a dice, but not for current encryption techniques.

[fm1]

i have the same problem did you found the solution  ?

[Peter BENSCH]

@fm1As mentioned before: choose an STM32 providing an RNG. If you have special requirements, you should create a new thread.

Regards
/Peter