Gecko [ armaneco.co.uk ]

Name	Size	Permission	Date
__init__.py	972 B	-rw-r--r--	2021-01-05 21:07
__init__.pyc	803 B	-rw-r--r--	2021-01-06 00:33
__init__.pyo	803 B	-rw-r--r--	2021-01-06 00:33
challenges.py	19.18 KB	-rw-r--r--	2021-01-05 21:07
challenges.pyc	21.37 KB	-rw-r--r--	2021-01-06 00:33
challenges.pyo	21.37 KB	-rw-r--r--	2021-01-06 00:33
client.py	45.86 KB	-rw-r--r--	2021-01-05 21:07
client.pyc	42.52 KB	-rw-r--r--	2021-01-06 00:33
client.pyo	42.32 KB	-rw-r--r--	2021-01-06 00:33
crypto_util.py	12.2 KB	-rw-r--r--	2021-01-05 21:07
crypto_util.pyc	12.39 KB	-rw-r--r--	2021-01-06 00:33
crypto_util.pyo	12.3 KB	-rw-r--r--	2021-01-06 00:33
errors.py	4.15 KB	-rw-r--r--	2021-01-05 21:07
errors.pyc	6.75 KB	-rw-r--r--	2021-01-06 00:33
errors.pyo	6.75 KB	-rw-r--r--	2021-01-06 00:33
fields.py	1.7 KB	-rw-r--r--	2021-01-05 21:07
fields.pyc	2.93 KB	-rw-r--r--	2021-01-06 00:33
fields.pyo	2.93 KB	-rw-r--r--	2021-01-06 00:33
jws.py	2.05 KB	-rw-r--r--	2021-01-05 21:07
jws.pyc	2.35 KB	-rw-r--r--	2021-01-06 00:33
jws.pyo	2.35 KB	-rw-r--r--	2021-01-06 00:33
magic_typing.py	537 B	-rw-r--r--	2021-01-05 21:07
magic_typing.pyc	871 B	-rw-r--r--	2021-01-06 00:33
magic_typing.pyo	871 B	-rw-r--r--	2021-01-06 00:33
messages.py	23.27 KB	-rw-r--r--	2021-01-05 21:07
messages.pyc	30.11 KB	-rw-r--r--	2021-01-06 00:33
messages.pyo	30.07 KB	-rw-r--r--	2021-01-06 00:33
mixins.py	2.65 KB	-rw-r--r--	2021-01-05 21:07
mixins.pyc	3.29 KB	-rw-r--r--	2021-01-06 00:33
mixins.pyo	3.29 KB	-rw-r--r--	2021-01-06 00:33
standalone.py	10.88 KB	-rw-r--r--	2021-01-05 21:07
standalone.pyc	11.9 KB	-rw-r--r--	2021-01-06 00:33
standalone.pyo	11.9 KB	-rw-r--r--	2021-01-06 00:33
util.py	160 B	-rw-r--r--	2021-01-05 21:07
util.pyc	620 B	-rw-r--r--	2021-01-06 00:33
util.pyo	620 B	-rw-r--r--	2021-01-06 00:33

Rename

"""ACME-specific JWS.

The JWS implementation in josepy only implements the base JOSE standard. In
order to support the new header fields defined in ACME, this module defines some
ACME-specific classes that layer on top of josepy.
"""
import josepy as jose

class Header(jose.Header):
    """ACME-specific JOSE Header. Implements nonce, kid, and url.
    """
    nonce = jose.Field('nonce', omitempty=True, encoder=jose.encode_b64jose)
    kid = jose.Field('kid', omitempty=True)
    url = jose.Field('url', omitempty=True)

@nonce.decoder
    def nonce(value):  # pylint: disable=no-self-argument,missing-function-docstring
        try:
            return jose.decode_b64jose(value)
        except jose.DeserializationError as error:
            # TODO: custom error
            raise jose.DeserializationError("Invalid nonce: {0}".format(error))

class Signature(jose.Signature):
    """ACME-specific Signature. Uses ACME-specific Header for customer fields."""
    __slots__ = jose.Signature._orig_slots  # pylint: disable=no-member

# TODO: decoder/encoder should accept cls? Otherwise, subclassing
    # JSONObjectWithFields is tricky...
    header_cls = Header
    header = jose.Field(
        'header', omitempty=True, default=header_cls(),
        decoder=header_cls.from_json)

# TODO: decoder should check that nonce is in the protected header

class JWS(jose.JWS):
    """ACME-specific JWS. Includes none, url, and kid in protected header."""
    signature_cls = Signature
    __slots__ = jose.JWS._orig_slots

@classmethod
    # pylint: disable=arguments-differ
    def sign(cls, payload, key, alg, nonce, url=None, kid=None):
        # Per ACME spec, jwk and kid are mutually exclusive, so only include a
        # jwk field if kid is not provided.
        include_jwk = kid is None
        return super(JWS, cls).sign(payload, key=key, alg=alg,
                                    protect=frozenset(['nonce', 'url', 'kid', 'jwk', 'alg']),
                                    nonce=nonce, url=url, kid=kid,
                                    include_jwk=include_jwk)