generate-RS512-jwt-key.sh

# macos
ssh-keygen -t rsa -b 4096 -E SHA512 -m PEM -f ~/my.jwt.RS512.pem

# pip install pyjwt
python <<PYTHON
import os
import logging

import jwt

logging.basicConfig(level=logging.INFO)

HOME = os.environ['HOME']

with open(f'{HOME}/my.jwt.RS512.pem.pub', 'r') as pub_key_file:
    pub_key = pub_key_file.read()

with open(f'{HOME}/my.jwt.RS512.pem', 'r') as private_key_file:
    private_key = private_key_file.read()

payload = {
  "nothing": "secret"
}

encoded = jwt.encode(payload, private_key, algorithm="RS512")
logging.info(encoded)
decoded = jwt.decode(encoded, pub_key, algorithms=["RS512"])
logging.info(decoded)
PYTHON