blob: 57697ca7427e13d633e67bfcf67e33f817c514b6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
# Copyright (C) 2015 JWCrypto Project Contributors - see LICENSE file
from base64 import urlsafe_b64encode, urlsafe_b64decode
# Padding stripping versions as described in
# draft-ietf-jose-json-web-signature-41 appendix C
def base64url_encode(payload):
return urlsafe_b64encode(payload).rstrip('=')
def base64url_decode(payload):
l = len(payload) % 4
if l == 2:
payload += '=='
elif l == 3:
payload += '='
elif l != 0:
raise ValueError('Invalid base64 string')
return urlsafe_b64decode(payload)
class InvalidJWAAlgorithm(Exception):
def __init__(self, message=None):
msg = 'Invalid JWS Algorithm name'
if message:
msg += ' (%s)' % message
super(InvalidJWAAlgorithm, self).__init__(msg)
|
