FM / primitives

/usr/lib64/python3.6/site-packages/cryptography/hazmat/primitives/

/usr/lib64/python3.6/site-packages/cryptography/hazmat/primitives

Name	Size	Mode	Actions
asymmetric/	-	0755	rm
ciphers/	-	0755	rm
kdf/	-	0755	rm
serialization/	-	0755	rm
twofactor/	-	0755	rm
__pycache__/	-	0755	rm
cmac.py	2177	0644	edit dl rm
constant_time.py	430	0644	edit dl rm
hashes.py	6315	0644	edit dl rm
hmac.py	2353	0644	edit dl rm
keywrap.py	5730	0644	edit dl rm
mac.py	884	0644	edit dl rm
padding.py	5743	0644	edit dl rm
poly1305.py	1679	0644	edit dl rm
__init__.py	246	0644	edit dl rm

Edit: /usr/lib64/python3.6/site-packages/cryptography/hazmat/primitives/cmac.py (2177B)

# This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.

from __future__ import absolute_import, division, print_function

from cryptography import utils
from cryptography.exceptions import (
    AlreadyFinalized,
    UnsupportedAlgorithm,
    _Reasons,
)
from cryptography.hazmat.backends import _get_backend
from cryptography.hazmat.backends.interfaces import CMACBackend
from cryptography.hazmat.primitives import ciphers, mac

@utils.register_interface(mac.MACContext)
class CMAC(object):
    def __init__(self, algorithm, backend=None, ctx=None):
        backend = _get_backend(backend)
        if not isinstance(backend, CMACBackend):
            raise UnsupportedAlgorithm(
                "Backend object does not implement CMACBackend.",
                _Reasons.BACKEND_MISSING_INTERFACE,
            )

if not isinstance(algorithm, ciphers.BlockCipherAlgorithm):
            raise TypeError("Expected instance of BlockCipherAlgorithm.")
        self._algorithm = algorithm

self._backend = backend
        if ctx is None:
            self._ctx = self._backend.create_cmac_ctx(self._algorithm)
        else:
            self._ctx = ctx

def update(self, data):
        if self._ctx is None:
            raise AlreadyFinalized("Context was already finalized.")

utils._check_bytes("data", data)
        self._ctx.update(data)

def finalize(self):
        if self._ctx is None:
            raise AlreadyFinalized("Context was already finalized.")
        digest = self._ctx.finalize()
        self._ctx = None
        return digest

def verify(self, signature):
        utils._check_bytes("signature", signature)
        if self._ctx is None:
            raise AlreadyFinalized("Context was already finalized.")

ctx, self._ctx = self._ctx, None
        ctx.verify(signature)

def copy(self):
        if self._ctx is None:
            raise AlreadyFinalized("Context was already finalized.")
        return CMAC(
            self._algorithm, backend=self._backend, ctx=self._ctx.copy()
        )

cmd: