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Nama	Ukuran	Izin	Aksi
__pycache__	-	0755	-
asymmetric	-	0755	-
ciphers	-	0755	-
kdf	-	0755	-
serialization	-	0755	-
twofactor	-	0755	-
__init__.py	180 B	0644	Edit Rename Delete
_asymmetric.py	532 B	0644	Edit Rename Delete
_cipheralgorithm.py	1.46 KB	0644	Edit Rename Delete
_serialization.py	5.02 KB	0644	Edit Rename Delete
cmac.py	338 B	0644	Edit Rename Delete
constant_time.py	422 B	0644	Edit Rename Delete
hashes.py	4.97 KB	0644	Edit Rename Delete
hmac.py	423 B	0644	Edit Rename Delete
keywrap.py	5.52 KB	0644	Edit Rename Delete
padding.py	5.39 KB	0644	Edit Rename Delete
poly1305.py	355 B	0644	Edit Rename Delete

Edit File:_cipheralgorithm.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 annotations

import abc

from cryptography import utils

# This exists to break an import cycle. It is normally accessible from the
# ciphers module.

class CipherAlgorithm(metaclass=abc.ABCMeta):
    @property
    @abc.abstractmethod
    def name(self) -> str:
        """
        A string naming this mode (e.g. "AES", "Camellia").
        """

@property
    @abc.abstractmethod
    def key_sizes(self) -> frozenset[int]:
        """
        Valid key sizes for this algorithm in bits
        """

@property
    @abc.abstractmethod
    def key_size(self) -> int:
        """
        The size of the key being used as an integer in bits (e.g. 128, 256).
        """

class BlockCipherAlgorithm(CipherAlgorithm):
    key: bytes

@property
    @abc.abstractmethod
    def block_size(self) -> int:
        """
        The size of a block as an integer in bits (e.g. 64, 128).
        """

def _verify_key_size(algorithm: CipherAlgorithm, key: bytes) -> bytes:
    # Verify that the key is instance of bytes
    utils._check_byteslike("key", key)

# Verify that the key size matches the expected key size
    if len(key) * 8 not in algorithm.key_sizes:
        raise ValueError(
            f"Invalid key size ({len(key) * 8}) for {algorithm.name}."
        )
    return key

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current directory: / / snap / certbot / 4557 / lib / python3.12 / site-packages / cryptography / hazmat / primitives

Edit File:_cipheralgorithm.py