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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxrwxrwx	2020-08-25 15:28
__init__.py	1.97 KB	-rwxrwxrwx	2018-04-13 16:47
b64.py	1.47 KB	-rwxrwxrwx	2018-04-13 16:47
b64_test.py	2.27 KB	-rwxrwxrwx	2018-04-13 16:47
errors.py	815 B	-rwxrwxrwx	2018-04-13 16:47
errors_test.py	463 B	-rwxrwxrwx	2018-04-13 16:47
interfaces.py	7.56 KB	-rwxrwxrwx	2018-04-13 16:47
interfaces_test.py	3.54 KB	-rwxrwxrwx	2018-04-13 16:47
json_util.py	15.38 KB	-rwxrwxrwx	2018-04-13 16:47
json_util_test.py	13.94 KB	-rwxrwxrwx	2018-04-13 16:47
jwa.py	6.01 KB	-rwxrwxrwx	2018-04-13 16:47
jwa_test.py	4.54 KB	-rwxrwxrwx	2018-04-13 16:47
jwk.py	9.19 KB	-rwxrwxrwx	2018-04-13 16:47
jwk_test.py	6.92 KB	-rwxrwxrwx	2018-04-13 16:47
jws.py	13.93 KB	-rwxrwxrwx	2018-04-13 16:47
jws_test.py	8.32 KB	-rwxrwxrwx	2018-04-13 16:47
test_util.py	2.85 KB	-rwxrwxrwx	2018-04-13 16:47
util.py	7.3 KB	-rwxrwxrwx	2018-04-13 16:47
util_test.py	6.45 KB	-rwxrwxrwx	2018-04-13 16:47

Rename

"""`JOSE Base64`_ is defined as:

- URL-safe Base64
  - padding stripped

.. _`JOSE Base64`:
    https://tools.ietf.org/html/draft-ietf-jose-json-web-signature-37#appendix-C

.. Do NOT try to call this module "base64", as it will "shadow" the
   standard library.

"""
import base64

import six

def b64encode(data):
    """JOSE Base64 encode.

:param data: Data to be encoded.
    :type data: bytes

:returns: JOSE Base64 string.
    :rtype: bytes

:raises TypeError: if ``data`` is of incorrect type

"""
    if not isinstance(data, six.binary_type):
        raise TypeError('argument should be {0}'.format(six.binary_type))
    return base64.urlsafe_b64encode(data).rstrip(b'=')

def b64decode(data):
    """JOSE Base64 decode.

:param data: Base64 string to be decoded. If it's unicode, then
                 only ASCII characters are allowed.
    :type data: bytes or unicode

:returns: Decoded data.
    :rtype: bytes

:raises TypeError: if input is of incorrect type
    :raises ValueError: if input is unicode with non-ASCII characters

"""
    if isinstance(data, six.string_types):
        try:
            data = data.encode('ascii')
        except UnicodeEncodeError:
            raise ValueError(
                'unicode argument should contain only ASCII characters')
    elif not isinstance(data, six.binary_type):
        raise TypeError('argument should be a str or unicode')

return base64.urlsafe_b64decode(data + b'=' * (4 - (len(data) % 4)))