Generating a JWT token

main.py

from __future__ import absolute_import

from time import time

import jwt


ISSUER = '8eb12629d265493588af989decb91209'


def _get_private_key():
    # File private_key.pem generated using `openssl genpkey -algorithm RSA -out private_key.pem -pkeyopt rsa_keygen_bits:4096`
    with open('private_key.pem', 'r') as f:
        return f.read()


def build_jwt_token(subject='sys', ttl=60, alg='RS256'):
    iat = time()

    payload = {
        'sub': subject,
        'iss': ISSUER,
        'iat': int(iat),
        'exp': int(iat + ttl),
    }

    private_key = _get_private_key()

    return jwt.encode(payload, key=private_key, algorithm=alg).decode('utf-8')


if __name__ == '__main__':
    print('sys token: '+build_jwt_token())
    print('user token: '+build_jwt_token('usr:123123-123123-45325'))