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📄 __init__.py(216 B)
📁 __pycache__
📄 algorithms.py(2.46 KB)

Editing: algorithms.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

from cryptography.hazmat.primitives._cipheralgorithm import (
    BlockCipherAlgorithm,
    CipherAlgorithm,
    _verify_key_size,
)

class ARC4(CipherAlgorithm):
    name = "RC4"
    key_sizes = frozenset([40, 56, 64, 80, 128, 160, 192, 256])

def __init__(self, key: bytes):
        self.key = _verify_key_size(self, key)

@property
    def key_size(self) -> int:
        return len(self.key) * 8

class TripleDES(BlockCipherAlgorithm):
    name = "3DES"
    block_size = 64
    key_sizes = frozenset([64, 128, 192])

def __init__(self, key: bytes):
        if len(key) == 8:
            key += key + key
        elif len(key) == 16:
            key += key[:8]
        self.key = _verify_key_size(self, key)

@property
    def key_size(self) -> int:
        return len(self.key) * 8

class Blowfish(BlockCipherAlgorithm):
    name = "Blowfish"
    block_size = 64
    key_sizes = frozenset(range(32, 449, 8))

def __init__(self, key: bytes):
        self.key = _verify_key_size(self, key)

@property
    def key_size(self) -> int:
        return len(self.key) * 8

class CAST5(BlockCipherAlgorithm):
    name = "CAST5"
    block_size = 64
    key_sizes = frozenset(range(40, 129, 8))

def __init__(self, key: bytes):
        self.key = _verify_key_size(self, key)

@property
    def key_size(self) -> int:
        return len(self.key) * 8

class SEED(BlockCipherAlgorithm):
    name = "SEED"
    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

class IDEA(BlockCipherAlgorithm):
    name = "IDEA"
    block_size = 64
    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

# This class only allows RC2 with a 128-bit key. No support for
# effective key bits or other key sizes is provided.
class RC2(BlockCipherAlgorithm):
    name = "RC2"
    block_size = 64
    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

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