ÿØÿàJFIFÿþ ÿÛC       ÿÛC ÿÀÿÄÿÄ"#QrÿÄÿÄ&1!A"2qQaáÿÚ ?Øy,æ/3JæÝ¹È߲؋5êXw²±ÉyˆR”¾I0ó2—PI¾IÌÚiMö¯–þrìN&"KgX:Šíµ•nTJnLK„…@!‰-ý ùúmë;ºgµŒ&ó±hw’¯Õ@”Ü— 9ñ-ë.²1<yà‚¹ïQÐU„ہ?.’¦èûbß±©Ö«Âw*VŒ) `$‰bØÔŸ’ëXÖ-ËTÜíGÚ3ð«g Ÿ§¯—Jx„–’U/ÂÅv_s(Hÿ@TñJÑãõçn­‚!ÈgfbÓc­:él[ðQe 9ÀPLbÃãCµm[5¿ç'ªjglå‡Ûí_§Úõl-;"PkÞÞÁQâ¼_Ñ^¢SŸx?"¸¦ùY騐ÒOÈ q’`~~ÚtËU¹CڒêV  I1Áß_ÿÙ# 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