Is fast 4096 bit asymmetric encryption in the pipeline?

[meetandyhere]

We are using the NRF52840 as a basis for BLE-based secure IoT network. I know that the Crypto library enables hardware-accelerated encryption/decryption. However, as far as I understand, the maximum key length is 512 bits?

I wanted to ask if Nordic as a chip/hardware in the pipeline/already available that can enable fast hardware-accelerated 4096 bit key asymmetric encryption/decryption for a 500 KB payload? Typically we would need the encryption/decryption to finish in under 1 second.

Thanks in advance for any information!

Regards

Andy

[Jørgen Holmefjord]

Hi,

The nRF52840 IC has the most advanced support for hardware accelerated cryptographic services, using the ARM TrustZone CryptoCell 310. The CryptoCell support RSA asymmetric encryption with up to 2048 bit key size, but not 4096 bit. What type of cryptographic routines are you looking for? You can test the CryptoCell using the CryptoCell examples in the SDK.

Best regards,

Jørgen