Helpers for JWT tokens with RSA.

>>> from jwt_rsa.token import JWT
>>> from jwt_rsa.rsa import generate_rsa
>>>
>>> bits = 2048
>>>
>>> private_key, public_key = generate_rsa(bits)
>>>
>>> jwt = JWT(private_key, public_key)
>>>
>>> token = jwt.encode(foo='bar')
>>> result = jwt.decode(token)
>>> result
{'foo': 'bar', 'exp': 1528631819.638339, 'nbf': 1523349799.638342}
>>> # Expired token
>>> token = jwt.encode(foo='bar', expired=-1)
>>> jwt.decode(token)
Traceback (most recent call last):
...
jwt.exceptions.ExpiredSignatureError: Signature has expired
>>> # No verify token signature and expiration
>>> jwt.decode(token, verify=False)
{'foo': 'bar', 'exp': -1, 'nbf': 1523350046.935803}

Module provides following utilities

Creates a new key pair:

$ jwt-rsa-keygen -h                                                                                                                                                                                              ±8 ?3 master
usage: jwt-rsa-keygen [-h] [-b BITS] [-P]

optional arguments:
  -h, --help            show this help message and exit
  -b BITS, --bits BITS
  -P, --pem

By default this utility return JSON-serialized key pair:

$ jwt-rsa-keygen                                                                                                                                                                                                 ±8 ?3 master
{
   "private": "MIIEvgIBADANBg......h3MBsSzx",
   "public": "MIIBCgKCAQEAxUU......5niBEjAB"
}

Add parameter -P for return in PEM format:

$ jwt-rsa-keygen -P                                                                                                                                                                                              ±8 ?3 master
-----BEGIN PRIVATE KEY-----
MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQDDeiI5V/O/Mbff
...
LGQgWf5ch0t1 Rh3tjIuuSc=
-----END PRIVATE KEY-----

-----BEGIN RSA PUBLIC KEY-----
MIIBCgKCAQEAw3oiOVfzvzG331nAL5hGHbblcCaV3pbfoCiFRgwpNPf7snIJtw97
...
3k2mMT1z6NFO6e6LMxg2zrqs3zgqwx5/9wIDAQAB
-----END RSA PUBLIC KEY-----

Verify JSON serialized key pair:

$ jwt-rsa-keygen | jwt-rsa-verify                                                                                                                                                                                ±8 ?3 master
INFO:root:Awaiting JSON on stdin...
INFO:root:Signing OK
INFO:root:Verifying OK

Or failed when key pair is invalid or doesn't match:

$ jwt-rsa-keygen | sed 's/M/j/' | jwt-rsa-verify                                                                                                                                                                 ±8 ?3 master
INFO:root:Awaiting JSON on stdin...
Traceback (most recent call last):
  ...
ValueError: Could not deserialize key data.