Use of 802.15.4 protocol on nRF52833 with AES-CTR encryption/decryption

RE: Use of 802.15.4 protocol on nRF52833 with AES-CTR encryption/decryption

Amanda Hsieh — Mon, 31 Jan 2022 13:24:39 GMT

Hi,

Sorry for the delay. I was out of the office last week.

It sounds fine from my side. Let me know if you have further issues regarding the modification.

-Amanda

RE: Use of 802.15.4 protocol on nRF52833 with AES-CTR encryption/decryption

Chris Shaw — Wed, 26 Jan 2022 01:10:48 GMT

I think I managed to fix the crash problem by moving the call to psa_crypto_init() out of thread initialisation and into the main application thread. Does this sound reasonable?

Once this was done the code seems to run reliably on the '33.

RE: Use of 802.15.4 protocol on nRF52833 with AES-CTR encryption/decryption

Amanda Hsieh — Mon, 24 Jan 2022 09:36:00 GMT

Hi,

The Nordic Security Module library supports CTR, but it's a purely SW-based implementation unless you have a chip that integrates the ARM CryptoCell peripheral like the nRF52840, in that case, you can select the CryptoCell HW backend.

Regards,
Amanda