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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2024-01-22 04:29
testdata	[ DIR ]	drwxr-xr-x	2024-01-22 04:29
__init__.py	1.66 KB	-rw-r--r--	2021-09-09 21:33
b64.py	1.4 KB	-rw-r--r--	2021-09-09 21:33
b64_test.py	2.2 KB	-rw-r--r--	2021-09-09 21:33
errors.py	762 B	-rw-r--r--	2021-09-09 21:33
errors_test.py	463 B	-rw-r--r--	2021-09-09 21:33
interfaces.py	7.51 KB	-rw-r--r--	2021-09-09 21:33
interfaces_test.py	3.51 KB	-rw-r--r--	2021-09-09 21:33
json_util.py	15.35 KB	-rw-r--r--	2021-09-09 21:33
json_util_test.py	13.83 KB	-rw-r--r--	2021-09-09 21:33
jwa.py	8.17 KB	-rw-r--r--	2021-09-09 21:33
jwa_test.py	8.8 KB	-rw-r--r--	2021-09-09 21:33
jwk.py	13.12 KB	-rw-r--r--	2021-09-09 21:33
jwk_test.py	12.69 KB	-rw-r--r--	2021-09-09 21:33
jws.py	13.84 KB	-rw-r--r--	2021-09-09 21:33
jws_test.py	8.32 KB	-rw-r--r--	2021-09-09 21:33
magic_typing.py	529 B	-rw-r--r--	2021-09-09 21:33
magic_typing_test.py	1.05 KB	-rw-r--r--	2021-09-09 21:33
test_util.py	2.57 KB	-rw-r--r--	2021-09-09 21:33
util.py	8.37 KB	-rw-r--r--	2021-09-09 21:33
util_test.py	8.15 KB	-rw-r--r--	2021-09-09 21:33

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

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

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