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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
# 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_IS_LIBRESSL
) and wycheproof.has_flag("MissingNull")
):
return False
return True
return False
@pytest.mark.requires_backend_interface(interface=RSABackend)
@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(wycheproof.testgroup["sha"])
)
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.wycheproof_tests(
"rsa_sig_gen_misc_test.json"
)
def test_rsa_pkcs1v15_signature_generation(backend, wycheproof):
key = serialization.load_pem_private_key(
wycheproof.testgroup["privateKeyPem"].encode(),
password=None,
backend=backend,
)
digest = _DIGESTS[wycheproof.testgroup["sha"]]
sig = key.sign(
binascii.unhexlify(wycheproof.testcase["msg"]),
padding.PKCS1v15(),
digest,
)
assert sig == binascii.unhexlify(wycheproof.testcase["sig"])
@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_2048_sha512_256_mgf1_28_test.json",
"rsa_pss_2048_sha512_256_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 digest is None or mgf_digest is None:
pytest.skip(
"PSS with digest={} and MGF digest={} not supported".format(
wycheproof.testgroup["sha"], 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
)
@pytest.mark.requires_backend_interface(interface=RSABackend)
@pytest.mark.supported(
only_if=lambda backend: (
backend._lib.CRYPTOGRAPHY_OPENSSL_110_OR_GREATER or
backend._lib.CRYPTOGRAPHY_IS_LIBRESSL
),
skip_message=(
"A handful 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_oaep_2048_sha1_mgf1sha1_test.json",
"rsa_oaep_2048_sha224_mgf1sha1_test.json",
"rsa_oaep_2048_sha224_mgf1sha224_test.json",
"rsa_oaep_2048_sha256_mgf1sha1_test.json",
"rsa_oaep_2048_sha256_mgf1sha256_test.json",
"rsa_oaep_2048_sha384_mgf1sha1_test.json",
"rsa_oaep_2048_sha384_mgf1sha384_test.json",
"rsa_oaep_2048_sha512_mgf1sha1_test.json",
"rsa_oaep_2048_sha512_mgf1sha512_test.json",
"rsa_oaep_3072_sha256_mgf1sha1_test.json",
"rsa_oaep_3072_sha256_mgf1sha256_test.json",
"rsa_oaep_3072_sha512_mgf1sha1_test.json",
"rsa_oaep_3072_sha512_mgf1sha512_test.json",
"rsa_oaep_4096_sha256_mgf1sha1_test.json",
"rsa_oaep_4096_sha256_mgf1sha256_test.json",
"rsa_oaep_4096_sha512_mgf1sha1_test.json",
"rsa_oaep_4096_sha512_mgf1sha512_test.json",
"rsa_oaep_misc_test.json",
)
def test_rsa_oaep_encryption(backend, wycheproof):
key = serialization.load_pem_private_key(
wycheproof.testgroup["privateKeyPem"].encode("ascii"),
password=None,
backend=backend,
)
digest = _DIGESTS[wycheproof.testgroup["sha"]]
mgf_digest = _DIGESTS[wycheproof.testgroup["mgfSha"]]
padding_algo = padding.OAEP(
mgf=padding.MGF1(algorithm=mgf_digest),
algorithm=digest,
label=binascii.unhexlify(wycheproof.testcase["label"])
)
if not backend.rsa_padding_supported(padding_algo):
pytest.skip(
"OAEP with digest={} and MGF digest={} not supported".format(
wycheproof.testgroup["sha"], wycheproof.testgroup["mgfSha"],
)
)
if wycheproof.valid or wycheproof.acceptable:
pt = key.decrypt(
binascii.unhexlify(wycheproof.testcase["ct"]),
padding_algo
)
assert pt == binascii.unhexlify(wycheproof.testcase["msg"])
else:
with pytest.raises(ValueError):
key.decrypt(
binascii.unhexlify(wycheproof.testcase["ct"]),
padding_algo
)
@pytest.mark.wycheproof_tests(
"rsa_pkcs1_2048_test.json",
"rsa_pkcs1_3072_test.json",
"rsa_pkcs1_4096_test.json",
)
def test_rsa_pkcs1_encryption(backend, wycheproof):
key = serialization.load_pem_private_key(
wycheproof.testgroup["privateKeyPem"].encode("ascii"),
password=None,
backend=backend,
)
if wycheproof.valid:
pt = key.decrypt(
binascii.unhexlify(wycheproof.testcase["ct"]),
padding.PKCS1v15()
)
assert pt == binascii.unhexlify(wycheproof.testcase["msg"])
else:
with pytest.raises(ValueError):
key.decrypt(
binascii.unhexlify(wycheproof.testcase["ct"]),
padding.PKCS1v15()
)
|