Which elliptic curves are supported by the nrf9160 modem?

[Dan H]

Hi,

We are currently looking into using the nrf9160 for a smart meter gateway like solution. It is of particular interest to us to know if we would be able to achieve compliance with Germany BSI’s TR-03116.

The mandatory cipher suites for our application scenario (TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256) are support by the nrf9160 modem according to this.

However, I did not find any information on which elliptic curves the modem uses with this cipher suites. TR-03116 requires BrainpoolP256r1, BrainpoolP384r1 and NIST P-256.

Are they supported by the modem?

[Kazi Afroza Sultana]

Hello Dan,

I would like to know the consequence of this case? If you are satisficed by the answers I can close the case.

Best Regards,

Kazi Afroza Sultana

[Kazi Afroza Sultana]

The modem does not have a HW accelerator for asymmetric key operations.