Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/cryptography/hazmat/primitives/_cipheralgorithm.py: 100%

1# This file is dual licensed under the terms of the Apache License, Version 

2# 2.0, and the BSD License. See the LICENSE file in the root of this repository 

3# for complete details. 

4 

5from __future__ import annotations 

6 

7import abc 

8import typing 

9 

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

11# ciphers module. 

12 

13 

14class CipherAlgorithm(metaclass=abc.ABCMeta): 

15 @property 

16 @abc.abstractmethod 

17 def name(self) -> str: 

18 """ 

19 A string naming this mode (e.g. "AES", "Camellia"). 

20 """ 

21 

22 @property 

23 @abc.abstractmethod 

24 def key_sizes(self) -> typing.FrozenSet[int]: 

25 """ 

26 Valid key sizes for this algorithm in bits 

27 """ 

28 

29 @property 

30 @abc.abstractmethod 

31 def key_size(self) -> int: 

32 """ 

33 The size of the key being used as an integer in bits (e.g. 128, 256). 

34 """ 

35 

36 

37class BlockCipherAlgorithm(CipherAlgorithm): 

38 key: bytes 

39 

40 @property 

41 @abc.abstractmethod 

42 def block_size(self) -> int: 

43 """ 

44 The size of a block as an integer in bits (e.g. 64, 128). 

45 """