Init

im going to bed -=-

lib/cryptography/hazmat/primitives/ciphers/algorithms.py

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+# 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
+
+from cryptography import utils
+from cryptography.hazmat.decrepit.ciphers.algorithms import (
+    ARC4 as ARC4,
+)
+from cryptography.hazmat.decrepit.ciphers.algorithms import (
+    CAST5 as CAST5,
+)
+from cryptography.hazmat.decrepit.ciphers.algorithms import (
+    IDEA as IDEA,
+)
+from cryptography.hazmat.decrepit.ciphers.algorithms import (
+    SEED as SEED,
+)
+from cryptography.hazmat.decrepit.ciphers.algorithms import (
+    Blowfish as Blowfish,
+)
+from cryptography.hazmat.decrepit.ciphers.algorithms import (
+    TripleDES as TripleDES,
+)
+from cryptography.hazmat.primitives._cipheralgorithm import _verify_key_size
+from cryptography.hazmat.primitives.ciphers import (
+    BlockCipherAlgorithm,
+    CipherAlgorithm,
+)
+
+
+class AES(BlockCipherAlgorithm):
+    name = "AES"
+    block_size = 128
+    # 512 added to support AES-256-XTS, which uses 512-bit keys
+    key_sizes = frozenset([128, 192, 256, 512])
+
+    def __init__(self, key: utils.Buffer):
+        self.key = _verify_key_size(self, key)
+
+    @property
+    def key_size(self) -> int:
+        return len(self.key) * 8
+
+
+class AES128(BlockCipherAlgorithm):
+    name = "AES"
+    block_size = 128
+    key_sizes = frozenset([128])
+    key_size = 128
+
+    def __init__(self, key: utils.Buffer):
+        self.key = _verify_key_size(self, key)
+
+
+class AES256(BlockCipherAlgorithm):
+    name = "AES"
+    block_size = 128
+    key_sizes = frozenset([256])
+    key_size = 256
+
+    def __init__(self, key: utils.Buffer):
+        self.key = _verify_key_size(self, key)
+
+
+class Camellia(BlockCipherAlgorithm):
+    name = "camellia"
+    block_size = 128
+    key_sizes = frozenset([128, 192, 256])
+
+    def __init__(self, key: utils.Buffer):
+        self.key = _verify_key_size(self, key)
+
+    @property
+    def key_size(self) -> int:
+        return len(self.key) * 8
+
+
+utils.deprecated(
+    ARC4,
+    __name__,
+    "ARC4 has been moved to "
+    "cryptography.hazmat.decrepit.ciphers.algorithms.ARC4 and "
+    "will be removed from "
+    "cryptography.hazmat.primitives.ciphers.algorithms in 48.0.0.",
+    utils.DeprecatedIn43,
+    name="ARC4",
+)
+
+
+utils.deprecated(
+    TripleDES,
+    __name__,
+    "TripleDES has been moved to "
+    "cryptography.hazmat.decrepit.ciphers.algorithms.TripleDES and "
+    "will be removed from "
+    "cryptography.hazmat.primitives.ciphers.algorithms in 48.0.0.",
+    utils.DeprecatedIn43,
+    name="TripleDES",
+)
+
+
+class ChaCha20(CipherAlgorithm):
+    name = "ChaCha20"
+    key_sizes = frozenset([256])
+
+    def __init__(self, key: utils.Buffer, nonce: utils.Buffer):
+        self.key = _verify_key_size(self, key)
+        utils._check_byteslike("nonce", nonce)
+
+        if len(nonce) != 16:
+            raise ValueError("nonce must be 128-bits (16 bytes)")
+
+        self._nonce = nonce
+
+    @property
+    def nonce(self) -> utils.Buffer:
+        return self._nonce
+
+    @property
+    def key_size(self) -> int:
+        return len(self.key) * 8
+
+
+class SM4(BlockCipherAlgorithm):
+    name = "SM4"
+    block_size = 128
+    key_sizes = frozenset([128])
+
+    def __init__(self, key: bytes):
+        self.key = _verify_key_size(self, key)
+
+    @property
+    def key_size(self) -> int:
+        return len(self.key) * 8