Use along KMS asymmetrical key

[julianCast]

I have a question regarding the use of this library. If I want to use my asymmetrical KMS key (KeySpec: RSA_2048, KeyUsage: SIGN_VERIFY), from my understand, the private key would be used to sign, while the public key would be use to verify/decode. But since the method jwt.sign with algorithm: 'RS256' requires the following a asymmetrical private key, I would have to generate or download the pem file and link it right?

But it defeat the purpose of having asymmetrical key in KMS while using a pem file. So my undertand if that it makes more sense for me to just use kms Verify/SignCommand methods instead of this library () ? Or am I mixing concepts?

Thank you!