XMAN Replicator

Path: /usr/lib64/python3.6/site-packages/cryptography/hazmat/backends/openssl/

Name	Size	Rights	Date	Actions
[.]	<DIR>	drwxr-xr-x	2025-08-28 19:41	🔄 🗑️ 🗑️📁 ⬇️ 🔒
[..]	<DIR>	drwxr-xr-x	2025-08-28 19:41	🔄 🗑️ 🗑️📁 ⬇️ 🔒
__init__.py	336 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
[__pycache__]	<DIR>	drwxr-xr-x	2025-08-28 19:41	🔄 🗑️ 🗑️📁 ⬇️ 🔒
aead.py	5,765 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
backend.py	106,997 B	-rw-r--r--	2025-08-26 10:01	✏️ 🔄 🗑️ ⬇️ 🔒
ciphers.py	8,631 B	-rw-r--r--	2025-08-26 10:01	✏️ 🔄 🗑️ ⬇️ 🔒
cmac.py	2,902 B	-rw-r--r--	2025-08-26 10:01	✏️ 🔄 🗑️ ⬇️ 🔒
decode_asn1.py	32,345 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
dh.py	10,239 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
dsa.py	10,036 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
ec.py	12,085 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
ed448.py	5,626 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
ed25519.py	5,670 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
encode_asn1.py	23,553 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
hashes.py	3,169 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
hmac.py	3,062 B	-rw-r--r--	2025-08-26 10:01	✏️ 🔄 🗑️ ⬇️ 🔒
ocsp.py	14,028 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
poly1305.py	2,419 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
rsa.py	17,378 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
utils.py	2,304 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
x448.py	4,011 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒
x509.py	21,691 B	-rw-r--r--	2025-08-26 10:01	✏️ 🔄 🗑️ ⬇️ 🔒
x25519.py	4,488 B	-rw-r--r--	2020-10-28 03:11	✏️ 🔄 🗑️ ⬇️ 🔒

Edit: cmac.py

# 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 (
    InvalidSignature,
    UnsupportedAlgorithm,
    _Reasons,
)
from cryptography.hazmat.primitives import constant_time, mac
from cryptography.hazmat.primitives.ciphers.modes import CBC

@utils.register_interface(mac.MACContext)
class _CMACContext(object):
    def __init__(self, backend, algorithm, ctx=None):
        if not backend.cmac_algorithm_supported(algorithm):
            raise UnsupportedAlgorithm(
                "This backend does not support CMAC.",
                _Reasons.UNSUPPORTED_CIPHER,
            )

self._backend = backend
        self._key = algorithm.key
        self._algorithm = algorithm
        self._output_length = algorithm.block_size // 8

if ctx is None:
            registry = self._backend._cipher_registry
            adapter = registry[type(algorithm), CBC]

evp_cipher = adapter(self._backend, algorithm, CBC)

ctx = self._backend._lib.CMAC_CTX_new()

self._backend.openssl_assert(ctx != self._backend._ffi.NULL)
            ctx = self._backend._ffi.gc(ctx, self._backend._lib.CMAC_CTX_free)

key_ptr = self._backend._ffi.from_buffer(self._key)
            res = self._backend._lib.CMAC_Init(
                ctx,
                key_ptr,
                len(self._key),
                evp_cipher,
                self._backend._ffi.NULL,
            )
            self._backend.openssl_assert(res == 1)

self._ctx = ctx

algorithm = utils.read_only_property("_algorithm")

def update(self, data):
        res = self._backend._lib.CMAC_Update(self._ctx, data, len(data))
        self._backend.openssl_assert(res == 1)

def finalize(self):
        buf = self._backend._ffi.new("unsigned char[]", self._output_length)
        length = self._backend._ffi.new("size_t *", self._output_length)
        res = self._backend._lib.CMAC_Final(self._ctx, buf, length)
        self._backend.openssl_assert(res == 1)

self._ctx = None

return self._backend._ffi.buffer(buf)[:]

def copy(self):
        copied_ctx = self._backend._lib.CMAC_CTX_new()
        copied_ctx = self._backend._ffi.gc(
            copied_ctx, self._backend._lib.CMAC_CTX_free
        )
        res = self._backend._lib.CMAC_CTX_copy(copied_ctx, self._ctx)
        self._backend.openssl_assert(res == 1)
        return _CMACContext(self._backend, self._algorithm, ctx=copied_ctx)

def verify(self, signature):
        digest = self.finalize()
        if not constant_time.bytes_eq(digest, signature):
            raise InvalidSignature("Signature did not match digest.")

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Edit: cmac.py

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