Serial communication between nrf52840 and desktop application

[Parichay]

Hi,

We are using nrf52840 to develop a cryptocurrency hardware wallet. We want that user can verify that the device is authenticate. In order to authenticate, the desktop application sends a secret message to the microcontroller then the microcontroller signs the message with the a private key and returns the signature to the application and then the app checks if the signature with the corresponding public key.

In order to do the communication, I am simply reading and writing from microcontroller and application to the serialport connection between the device using serialport npm package. I just want to know if this is a good practice for communication? Is there any better method by which I can make the microcontroller and application connect with each other.

Thanks in advance.

[Kenneth]

I don't see any better method, just be aware that the nRF52840 don't have any secure element.