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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
# 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.
import binascii
import os
import pytest
from cryptography.exceptions import AlreadyFinalized, InvalidKey
from cryptography.hazmat.primitives.kdf.argon2 import Argon2id
from tests.utils import (
load_nist_vectors,
load_vectors_from_file,
raises_unsupported_algorithm,
)
vectors = load_vectors_from_file(
os.path.join("KDF", "argon2id.txt"), load_nist_vectors
)
@pytest.mark.supported(
only_if=lambda backend: not backend.argon2_supported(),
skip_message="Supports argon2 so can't test unsupported path",
)
def test_unsupported_backend(backend):
with raises_unsupported_algorithm(None):
Argon2id(
salt=b"salt" * 2, length=32, iterations=1, lanes=1, memory_cost=32
)
@pytest.mark.supported(
only_if=lambda backend: backend.argon2_supported(),
skip_message="Argon2id not supported by this version of OpenSSL",
)
class TestArgon2id:
@pytest.mark.parametrize("params", vectors)
def test_derive(self, params, backend):
salt = binascii.unhexlify(params["salt"])
ad = binascii.unhexlify(params["ad"]) if "ad" in params else None
secret = (
binascii.unhexlify(params["secret"])
if "secret" in params
else None
)
length = int(params["length"])
iterations = int(params["iter"])
lanes = int(params["lanes"])
memory_cost = int(params["memcost"])
password = binascii.unhexlify(params["pass"])
derived_key = params["output"].lower()
argon2id = Argon2id(
salt=salt,
length=length,
iterations=iterations,
lanes=lanes,
memory_cost=memory_cost,
ad=ad,
secret=secret,
)
assert binascii.hexlify(argon2id.derive(password)) == derived_key
def test_invalid_types(self, backend):
with pytest.raises(TypeError):
Argon2id(
salt="notbytes", # type: ignore[arg-type]
length=32,
iterations=1,
lanes=1,
memory_cost=32,
ad=None,
secret=None,
)
with pytest.raises(TypeError):
Argon2id(
salt=b"b" * 8,
length=32,
iterations=1,
lanes=1,
memory_cost=32,
ad="string", # type: ignore[arg-type]
secret=None,
)
with pytest.raises(TypeError):
Argon2id(
salt=b"b" * 8,
length=32,
iterations=1,
lanes=1,
memory_cost=32,
ad=None,
secret="string", # type: ignore[arg-type]
)
@pytest.mark.parametrize(
"params",
[
(b"b" * 7, 3, 1, 1, 32), # salt < 8
(b"b" * 8, 3, 1, 1, 32), # length < 4
(b"b" * 8, 32, 0, 1, 32), # iterations < 1
(b"b" * 8, 32, 1, 0, 32), # lanes < 1
(b"b" * 8, 32, 1, 1, 7), # memory_cost < 8 * lanes
(b"b" * 8, 32, 1, 32, 200), # memory_cost < 8 * lanes
],
)
def test_invalid_values(self, params, backend):
(salt, length, iterations, lanes, memory_cost) = params
with pytest.raises(ValueError):
Argon2id(
salt=salt,
length=length,
iterations=iterations,
lanes=lanes,
memory_cost=memory_cost,
)
def test_already_finalized(self, backend):
argon2id = Argon2id(
salt=b"salt" * 2, length=32, iterations=1, lanes=1, memory_cost=32
)
argon2id.derive(b"password")
with pytest.raises(AlreadyFinalized):
argon2id.derive(b"password")
def test_already_finalized_verify(self, backend):
argon2id = Argon2id(
salt=b"salt" * 2, length=32, iterations=1, lanes=1, memory_cost=32
)
digest = argon2id.derive(b"password")
with pytest.raises(AlreadyFinalized):
argon2id.verify(b"password", digest)
@pytest.mark.parametrize("digest", [b"invalidkey", b"0" * 32])
def test_invalid_verify(self, digest, backend):
argon2id = Argon2id(
salt=b"salt" * 2, length=32, iterations=1, lanes=1, memory_cost=32
)
with pytest.raises(InvalidKey):
argon2id.verify(b"password", digest)
def test_verify(self, backend):
argon2id = Argon2id(
salt=b"salt" * 2,
length=32,
iterations=1,
lanes=1,
memory_cost=32,
ad=None,
secret=None,
)
digest = argon2id.derive(b"password")
Argon2id(
salt=b"salt" * 2, length=32, iterations=1, lanes=1, memory_cost=32
).verify(b"password", digest)
|
