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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
# 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 absolute_import, division, print_function
import binascii
import pytest
from cryptography.exceptions import _Reasons
from cryptography.hazmat.primitives import ciphers
from cryptography.hazmat.primitives.ciphers.algorithms import (
AES, ARC4, Blowfish, CAST5, Camellia, IDEA, SEED, TripleDES
)
from cryptography.hazmat.primitives.ciphers.modes import ECB
from ...utils import raises_unsupported_algorithm
class TestAES(object):
@pytest.mark.parametrize(("key", "keysize"), [
(b"0" * 32, 128),
(b"0" * 48, 192),
(b"0" * 64, 256),
])
def test_key_size(self, key, keysize):
cipher = AES(binascii.unhexlify(key))
assert cipher.key_size == keysize
def test_invalid_key_size(self):
with pytest.raises(ValueError):
AES(binascii.unhexlify(b"0" * 12))
class TestCamellia(object):
@pytest.mark.parametrize(("key", "keysize"), [
(b"0" * 32, 128),
(b"0" * 48, 192),
(b"0" * 64, 256),
])
def test_key_size(self, key, keysize):
cipher = Camellia(binascii.unhexlify(key))
assert cipher.key_size == keysize
def test_invalid_key_size(self):
with pytest.raises(ValueError):
Camellia(binascii.unhexlify(b"0" * 12))
class TestTripleDES(object):
@pytest.mark.parametrize("key", [
b"0" * 16,
b"0" * 32,
b"0" * 48,
])
def test_key_size(self, key):
cipher = TripleDES(binascii.unhexlify(key))
assert cipher.key_size == 192
def test_invalid_key_size(self):
with pytest.raises(ValueError):
TripleDES(binascii.unhexlify(b"0" * 12))
class TestBlowfish(object):
@pytest.mark.parametrize(("key", "keysize"), [
(b"0" * (keysize // 4), keysize) for keysize in range(32, 449, 8)
])
def test_key_size(self, key, keysize):
cipher = Blowfish(binascii.unhexlify(key))
assert cipher.key_size == keysize
def test_invalid_key_size(self):
with pytest.raises(ValueError):
Blowfish(binascii.unhexlify(b"0" * 6))
class TestCAST5(object):
@pytest.mark.parametrize(("key", "keysize"), [
(b"0" * (keysize // 4), keysize) for keysize in range(40, 129, 8)
])
def test_key_size(self, key, keysize):
cipher = CAST5(binascii.unhexlify(key))
assert cipher.key_size == keysize
def test_invalid_key_size(self):
with pytest.raises(ValueError):
CAST5(binascii.unhexlify(b"0" * 34))
class TestARC4(object):
@pytest.mark.parametrize(("key", "keysize"), [
(b"0" * 10, 40),
(b"0" * 14, 56),
(b"0" * 16, 64),
(b"0" * 20, 80),
(b"0" * 32, 128),
(b"0" * 48, 192),
(b"0" * 64, 256),
])
def test_key_size(self, key, keysize):
cipher = ARC4(binascii.unhexlify(key))
assert cipher.key_size == keysize
def test_invalid_key_size(self):
with pytest.raises(ValueError):
ARC4(binascii.unhexlify(b"0" * 34))
class TestIDEA(object):
def test_key_size(self):
cipher = IDEA(b"\x00" * 16)
assert cipher.key_size == 128
def test_invalid_key_size(self):
with pytest.raises(ValueError):
IDEA(b"\x00" * 17)
class TestSEED(object):
def test_key_size(self):
cipher = SEED(b"\x00" * 16)
assert cipher.key_size == 128
def test_invalid_key_size(self):
with pytest.raises(ValueError):
SEED(b"\x00" * 17)
def test_invalid_backend():
pretend_backend = object()
with raises_unsupported_algorithm(_Reasons.BACKEND_MISSING_INTERFACE):
ciphers.Cipher(AES(b"AAAAAAAAAAAAAAAA"), ECB, pretend_backend)
|
