1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import, division, print_function
class AES(object):
name = "AES"
block_size = 128
key_sizes = frozenset([128, 192, 256])
def __init__(self, key):
super(AES, self).__init__()
self.key = key
# Verify that the key size matches the expected key size
if self.key_size not in self.key_sizes:
raise ValueError("Invalid key size ({0}) for {1}".format(
self.key_size, self.name
))
@property
def key_size(self):
return len(self.key) * 8
class Camellia(object):
name = "camellia"
block_size = 128
key_sizes = frozenset([128, 192, 256])
def __init__(self, key):
super(Camellia, self).__init__()
self.key = key
# Verify that the key size matches the expected key size
if self.key_size not in self.key_sizes:
raise ValueError("Invalid key size ({0}) for {1}".format(
self.key_size, self.name
))
@property
def key_size(self):
return len(self.key) * 8
class TripleDES(object):
name = "3DES"
block_size = 64
key_sizes = frozenset([64, 128, 192])
def __init__(self, key):
super(TripleDES, self).__init__()
if len(key) == 8:
key += key + key
elif len(key) == 16:
key += key[:8]
self.key = key
# Verify that the key size matches the expected key size
if self.key_size not in self.key_sizes:
raise ValueError("Invalid key size ({0}) for {1}".format(
self.key_size, self.name
))
@property
def key_size(self):
return len(self.key) * 8
class Blowfish(object):
name = "Blowfish"
block_size = 64
key_sizes = frozenset(range(32, 449, 8))
def __init__(self, key):
super(Blowfish, self).__init__()
self.key = key
# Verify that the key size matches the expected key size
if self.key_size not in self.key_sizes:
raise ValueError("Invalid key size ({0}) for {1}".format(
self.key_size, self.name
))
@property
def key_size(self):
return len(self.key) * 8
class CAST5(object):
name = "CAST5"
block_size = 64
key_sizes = frozenset([40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120, 128])
def __init__(self, key):
super(CAST5, self).__init__()
self.key = key
# Verify that the key size matches the expected key size
if self.key_size not in self.key_sizes:
raise ValueError("Invalid key size ({0}) for {1}".format(
self.key_size, self.name
))
@property
def key_size(self):
return len(self.key) * 8
|
