JWT decode on nRF52840

[PW]

Hi. I'm going to decode JWT (ECDSA sign) but I'm stuck. There is simple example to sign payload, but how can I decode JWT which I get from another device via bluetooth? I tried also to use l8w8jwt lib but there is many dependicies to solve and I've no idea is it right way? Is anybody can help? :)

Best regards

PW

[Amanda Hsieh]

Hi, 

Our expert said

if you just want to decode the JWT, you can use the Zephyr function base64_decode. 

if you want to verify the JWT's signature, you can use uECC_verify from the tinycrypt library.

Regards,
Amanda H.

[PW]

Thanks. It's clear now.

[PW]

I have another problem. Is tinycrypt still supported on Zephyr? Maybe the better way will be use psa crypto api?

[Amanda Hsieh]

PSA is the recommended API going forward.