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
|
# 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 InvalidSignature
from cryptography.hazmat.backends.interfaces import RSABackend
from cryptography.hazmat.primitives import hashes, serialization
from cryptography.hazmat.primitives.asymmetric import padding
_DIGESTS = {
"SHA-1": hashes.SHA1(),
"SHA-224": hashes.SHA224(),
"SHA-256": hashes.SHA256(),
"SHA-384": hashes.SHA384(),
"SHA-512": hashes.SHA512(),
# Not supported by OpenSSL for RSA signing
"SHA-512/224": None,
"SHA-512/256": None,
"SHA3-224": hashes.SHA3_224(),
"SHA3-256": hashes.SHA3_256(),
"SHA3-384": hashes.SHA3_384(),
"SHA3-512": hashes.SHA3_512(),
}
def should_verify(backend, wycheproof):
if wycheproof.valid:
return True
if wycheproof.acceptable:
if (
(
backend._lib.CRYPTOGRAPHY_OPENSSL_110_OR_GREATER or
backend._lib.CRYPTOGRAPHY_LIBRESSL_28_OR_GREATER
) and wycheproof.has_flag("MissingNull")
):
return False
return True
return False
@pytest.mark.requires_backend_interface(interface=RSABackend)
@pytest.mark.supported(
only_if=lambda backend: (
not backend._lib.CRYPTOGRAPHY_OPENSSL_LESS_THAN_102 or
backend._lib.CRYPTOGRAPHY_LIBRESSL_28_OR_GREATER
),
skip_message=(
"Many of these tests fail on OpenSSL < 1.0.2 and since upstream isn't"
" maintaining it, they'll never be fixed."
),
)
@pytest.mark.wycheproof_tests(
"rsa_signature_test.json",
"rsa_signature_2048_sha224_test.json",
"rsa_signature_2048_sha256_test.json",
"rsa_signature_2048_sha384_test.json",
"rsa_signature_2048_sha512_test.json",
"rsa_signature_2048_sha512_224_test.json",
"rsa_signature_2048_sha512_256_test.json",
"rsa_signature_2048_sha3_224_test.json",
"rsa_signature_2048_sha3_256_test.json",
"rsa_signature_2048_sha3_384_test.json",
"rsa_signature_2048_sha3_512_test.json",
"rsa_signature_3072_sha256_test.json",
"rsa_signature_3072_sha384_test.json",
"rsa_signature_3072_sha512_test.json",
"rsa_signature_3072_sha512_256_test.json",
"rsa_signature_3072_sha3_256_test.json",
"rsa_signature_3072_sha3_384_test.json",
"rsa_signature_3072_sha3_512_test.json",
"rsa_signature_4096_sha384_test.json",
"rsa_signature_4096_sha512_test.json",
"rsa_signature_4096_sha512_256_test.json",
)
def test_rsa_pkcs1v15_signature(backend, wycheproof):
key = serialization.load_der_public_key(
binascii.unhexlify(wycheproof.testgroup["keyDer"]), backend
)
digest = _DIGESTS[wycheproof.testgroup["sha"]]
if digest is None or not backend.hash_supported(digest):
pytest.skip("Hash {} not supported".format(digest))
if should_verify(backend, wycheproof):
key.verify(
binascii.unhexlify(wycheproof.testcase["sig"]),
binascii.unhexlify(wycheproof.testcase["msg"]),
padding.PKCS1v15(),
digest,
)
else:
with pytest.raises(InvalidSignature):
key.verify(
binascii.unhexlify(wycheproof.testcase["sig"]),
binascii.unhexlify(wycheproof.testcase["msg"]),
padding.PKCS1v15(),
digest,
)
@pytest.mark.requires_backend_interface(interface=RSABackend)
@pytest.mark.wycheproof_tests(
"rsa_pss_2048_sha1_mgf1_20_test.json",
"rsa_pss_2048_sha256_mgf1_0_test.json",
"rsa_pss_2048_sha256_mgf1_32_test.json",
"rsa_pss_3072_sha256_mgf1_32_test.json",
"rsa_pss_4096_sha256_mgf1_32_test.json",
"rsa_pss_4096_sha512_mgf1_32_test.json",
"rsa_pss_misc_test.json",
)
def test_rsa_pss_signature(backend, wycheproof):
key = serialization.load_der_public_key(
binascii.unhexlify(wycheproof.testgroup["keyDer"]), backend
)
digest = _DIGESTS[wycheproof.testgroup["sha"]]
mgf_digest = _DIGESTS[wycheproof.testgroup["mgfSha"]]
if wycheproof.valid or wycheproof.acceptable:
key.verify(
binascii.unhexlify(wycheproof.testcase["sig"]),
binascii.unhexlify(wycheproof.testcase["msg"]),
padding.PSS(
mgf=padding.MGF1(mgf_digest),
salt_length=wycheproof.testgroup["sLen"]
),
digest
)
else:
with pytest.raises(InvalidSignature):
key.verify(
binascii.unhexlify(wycheproof.testcase["sig"]),
binascii.unhexlify(wycheproof.testcase["msg"]),
padding.PSS(
mgf=padding.MGF1(mgf_digest),
salt_length=wycheproof.testgroup["sLen"]
),
digest
)
|
