mirror of http://git.sairate.top/sairate/doc.git
178 lines
4.1 KiB
Python
178 lines
4.1 KiB
Python
# This file is dual licensed under the terms of the Apache License, Version
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# 2.0, and the BSD License. See the LICENSE file in the root of this repository
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# for complete details.
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from __future__ import annotations
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from cryptography import utils
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from cryptography.hazmat.decrepit.ciphers.algorithms import (
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ARC4 as ARC4,
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)
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from cryptography.hazmat.decrepit.ciphers.algorithms import (
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CAST5 as CAST5,
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)
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from cryptography.hazmat.decrepit.ciphers.algorithms import (
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IDEA as IDEA,
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)
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from cryptography.hazmat.decrepit.ciphers.algorithms import (
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SEED as SEED,
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)
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from cryptography.hazmat.decrepit.ciphers.algorithms import (
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Blowfish as Blowfish,
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)
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from cryptography.hazmat.decrepit.ciphers.algorithms import (
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TripleDES as TripleDES,
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)
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from cryptography.hazmat.primitives._cipheralgorithm import _verify_key_size
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from cryptography.hazmat.primitives.ciphers import (
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BlockCipherAlgorithm,
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CipherAlgorithm,
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)
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class AES(BlockCipherAlgorithm):
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name = "AES"
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block_size = 128
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# 512 added to support AES-256-XTS, which uses 512-bit keys
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key_sizes = frozenset([128, 192, 256, 512])
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def __init__(self, key: bytes):
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self.key = _verify_key_size(self, key)
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@property
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def key_size(self) -> int:
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return len(self.key) * 8
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class AES128(BlockCipherAlgorithm):
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name = "AES"
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block_size = 128
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key_sizes = frozenset([128])
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key_size = 128
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def __init__(self, key: bytes):
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self.key = _verify_key_size(self, key)
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class AES256(BlockCipherAlgorithm):
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name = "AES"
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block_size = 128
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key_sizes = frozenset([256])
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key_size = 256
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def __init__(self, key: bytes):
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self.key = _verify_key_size(self, key)
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class Camellia(BlockCipherAlgorithm):
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name = "camellia"
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block_size = 128
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key_sizes = frozenset([128, 192, 256])
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def __init__(self, key: bytes):
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self.key = _verify_key_size(self, key)
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@property
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def key_size(self) -> int:
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return len(self.key) * 8
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utils.deprecated(
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ARC4,
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__name__,
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"ARC4 has been moved to "
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"cryptography.hazmat.decrepit.ciphers.algorithms.ARC4 and "
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"will be removed from this module in 48.0.0.",
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utils.DeprecatedIn43,
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name="ARC4",
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)
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utils.deprecated(
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TripleDES,
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__name__,
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"TripleDES has been moved to "
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"cryptography.hazmat.decrepit.ciphers.algorithms.TripleDES and "
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"will be removed from this module in 48.0.0.",
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utils.DeprecatedIn43,
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name="TripleDES",
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)
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utils.deprecated(
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Blowfish,
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__name__,
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"Blowfish has been moved to "
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"cryptography.hazmat.decrepit.ciphers.algorithms.Blowfish and "
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"will be removed from this module in 45.0.0.",
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utils.DeprecatedIn37,
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name="Blowfish",
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)
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utils.deprecated(
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CAST5,
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__name__,
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"CAST5 has been moved to "
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"cryptography.hazmat.decrepit.ciphers.algorithms.CAST5 and "
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"will be removed from this module in 45.0.0.",
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utils.DeprecatedIn37,
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name="CAST5",
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)
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utils.deprecated(
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IDEA,
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__name__,
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"IDEA has been moved to "
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"cryptography.hazmat.decrepit.ciphers.algorithms.IDEA and "
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"will be removed from this module in 45.0.0.",
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utils.DeprecatedIn37,
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name="IDEA",
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)
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utils.deprecated(
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SEED,
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__name__,
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"SEED has been moved to "
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"cryptography.hazmat.decrepit.ciphers.algorithms.SEED and "
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"will be removed from this module in 45.0.0.",
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utils.DeprecatedIn37,
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name="SEED",
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)
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class ChaCha20(CipherAlgorithm):
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name = "ChaCha20"
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key_sizes = frozenset([256])
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def __init__(self, key: bytes, nonce: bytes):
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self.key = _verify_key_size(self, key)
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utils._check_byteslike("nonce", nonce)
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if len(nonce) != 16:
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raise ValueError("nonce must be 128-bits (16 bytes)")
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self._nonce = nonce
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@property
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def nonce(self) -> bytes:
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return self._nonce
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@property
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def key_size(self) -> int:
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return len(self.key) * 8
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class SM4(BlockCipherAlgorithm):
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name = "SM4"
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block_size = 128
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key_sizes = frozenset([128])
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def __init__(self, key: bytes):
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self.key = _verify_key_size(self, key)
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@property
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def key_size(self) -> int:
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return len(self.key) * 8
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