python jwt
>>> import jwt >>> private_key = b"-----BEGIN PRIVATE KEY-----nMIGEAgEAMBAGByqGSM49AgEGBS..." >>> public_key = b"-----BEGIN PUBLIC KEY-----nMHYwEAYHKoZIzj0CAQYFK4EEAC..." >>> encoded = jwt.encode({"some": "payload"}, private_key, algorithm="RS256") >>> print(encoded) eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzb21lIjoicGF5bG9hZCJ9.4twFt5NiznN84AWoo1d7KO1T_yoc0Z6XOpOVswacPZg >>> decoded = jwt.decode(encoded, public_key, algorithms=["RS256"]) {'some': 'payload'}