RE: RSA encryption and decryption in SPM using mbedTLS

WhiteCloud2 — Wed, 15 Dec 2021 15:55:51 GMT

Thanks, Einar, for the quick response.

I will look into TF-M.

RE: RSA encryption and decryption in SPM using mbedTLS

Einar Thorsrud — Wed, 15 Dec 2021 14:07:19 GMT

I see this is a nonsecure callable in the SPM, so I assume the goal is to use hardware accelerated RSA operations from non-secure? If so, perhaps it is worth considering using TF-M instead of SPM? That is still experimental, but is the only solution we provide for this and is what will be supported going forward. You can see an example of this in Crypto: RSA.