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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642
|
# 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 itertools
import os
import subprocess
import sys
import textwrap
from pkg_resources import parse_version
import pytest
from cryptography import x509
from cryptography.exceptions import InternalError, _Reasons
from cryptography.hazmat.backends.interfaces import DHBackend, RSABackend
from cryptography.hazmat.backends.openssl.backend import (
Backend, backend
)
from cryptography.hazmat.backends.openssl.ec import _sn_to_elliptic_curve
from cryptography.hazmat.primitives import hashes, serialization
from cryptography.hazmat.primitives.asymmetric import dh, dsa, padding
from cryptography.hazmat.primitives.ciphers import Cipher
from cryptography.hazmat.primitives.ciphers.algorithms import AES
from cryptography.hazmat.primitives.ciphers.modes import CBC
from ..primitives.fixtures_rsa import RSA_KEY_2048, RSA_KEY_512
from ...doubles import (
DummyAsymmetricPadding, DummyCipherAlgorithm, DummyHashAlgorithm, DummyMode
)
from ...utils import (
load_nist_vectors, load_vectors_from_file, raises_unsupported_algorithm
)
from ...x509.test_x509 import _load_cert
def skip_if_libre_ssl(openssl_version):
if u'LibreSSL' in openssl_version:
pytest.skip("LibreSSL hard-codes RAND_bytes to use arc4random.")
class TestLibreSkip(object):
def test_skip_no(self):
assert skip_if_libre_ssl(u"OpenSSL 1.0.2h 3 May 2016") is None
def test_skip_yes(self):
with pytest.raises(pytest.skip.Exception):
skip_if_libre_ssl(u"LibreSSL 2.1.6")
class DummyMGF(object):
_salt_length = 0
class TestOpenSSL(object):
def test_backend_exists(self):
assert backend
def test_openssl_version_text(self):
"""
This test checks the value of OPENSSL_VERSION_TEXT.
Unfortunately, this define does not appear to have a
formal content definition, so for now we'll test to see
if it starts with OpenSSL or LibreSSL as that appears
to be true for every OpenSSL-alike.
"""
assert (
backend.openssl_version_text().startswith("OpenSSL") or
backend.openssl_version_text().startswith("LibreSSL")
)
def test_openssl_version_number(self):
assert backend.openssl_version_number() > 0
def test_supports_cipher(self):
assert backend.cipher_supported(None, None) is False
def test_register_duplicate_cipher_adapter(self):
with pytest.raises(ValueError):
backend.register_cipher_adapter(AES, CBC, None)
@pytest.mark.parametrize("mode", [DummyMode(), None])
def test_nonexistent_cipher(self, mode):
b = Backend()
b.register_cipher_adapter(
DummyCipherAlgorithm,
type(mode),
lambda backend, cipher, mode: backend._ffi.NULL
)
cipher = Cipher(
DummyCipherAlgorithm(), mode, backend=b,
)
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_CIPHER):
cipher.encryptor()
def test_openssl_assert(self):
backend.openssl_assert(True)
with pytest.raises(InternalError):
backend.openssl_assert(False)
def test_consume_errors(self):
for i in range(10):
backend._lib.ERR_put_error(backend._lib.ERR_LIB_EVP, 0, 0,
b"test_openssl.py", -1)
assert backend._lib.ERR_peek_error() != 0
errors = backend._consume_errors()
assert backend._lib.ERR_peek_error() == 0
assert len(errors) == 10
def test_ssl_ciphers_registered(self):
meth = backend._lib.SSLv23_method()
ctx = backend._lib.SSL_CTX_new(meth)
assert ctx != backend._ffi.NULL
backend._lib.SSL_CTX_free(ctx)
def test_evp_ciphers_registered(self):
cipher = backend._lib.EVP_get_cipherbyname(b"aes-256-cbc")
assert cipher != backend._ffi.NULL
def test_error_strings_loaded(self):
buf = backend._ffi.new("char[]", 256)
backend._lib.ERR_error_string_n(101183626, buf, len(buf))
assert b"data not multiple of block length" in backend._ffi.string(buf)
def test_unknown_error_in_cipher_finalize(self):
cipher = Cipher(AES(b"\0" * 16), CBC(b"\0" * 16), backend=backend)
enc = cipher.encryptor()
enc.update(b"\0")
backend._lib.ERR_put_error(0, 0, 1,
b"test_openssl.py", -1)
with pytest.raises(InternalError):
enc.finalize()
def test_large_key_size_on_new_openssl(self):
parameters = dsa.generate_parameters(2048, backend)
param_num = parameters.parameter_numbers()
assert param_num.p.bit_length() == 2048
parameters = dsa.generate_parameters(3072, backend)
param_num = parameters.parameter_numbers()
assert param_num.p.bit_length() == 3072
def test_int_to_bn(self):
value = (2 ** 4242) - 4242
bn = backend._int_to_bn(value)
assert bn != backend._ffi.NULL
bn = backend._ffi.gc(bn, backend._lib.BN_clear_free)
assert bn
assert backend._bn_to_int(bn) == value
def test_int_to_bn_inplace(self):
value = (2 ** 4242) - 4242
bn_ptr = backend._lib.BN_new()
assert bn_ptr != backend._ffi.NULL
bn_ptr = backend._ffi.gc(bn_ptr, backend._lib.BN_free)
bn = backend._int_to_bn(value, bn_ptr)
assert bn == bn_ptr
assert backend._bn_to_int(bn_ptr) == value
def test_bn_to_int(self):
bn = backend._int_to_bn(0)
assert backend._bn_to_int(bn) == 0
@pytest.mark.skipif(
backend._lib.Cryptography_HAS_ENGINE == 0,
reason="Requires OpenSSL with ENGINE support")
class TestOpenSSLRandomEngine(object):
def setup(self):
# The default RAND engine is global and shared between
# tests. We make sure that the default engine is osrandom
# before we start each test and restore the global state to
# that engine in teardown.
current_default = backend._lib.ENGINE_get_default_RAND()
name = backend._lib.ENGINE_get_name(current_default)
assert name == backend._lib.Cryptography_osrandom_engine_name
def teardown(self):
# we need to reset state to being default. backend is a shared global
# for all these tests.
backend.activate_osrandom_engine()
current_default = backend._lib.ENGINE_get_default_RAND()
name = backend._lib.ENGINE_get_name(current_default)
assert name == backend._lib.Cryptography_osrandom_engine_name
@pytest.mark.skipif(sys.executable is None,
reason="No Python interpreter available.")
def test_osrandom_engine_is_default(self, tmpdir):
engine_printer = textwrap.dedent(
"""
import sys
from cryptography.hazmat.backends.openssl.backend import backend
e = backend._lib.ENGINE_get_default_RAND()
name = backend._lib.ENGINE_get_name(e)
sys.stdout.write(backend._ffi.string(name).decode('ascii'))
res = backend._lib.ENGINE_free(e)
assert res == 1
"""
)
engine_name = tmpdir.join('engine_name')
# If we're running tests via ``python setup.py test`` in a clean
# environment then all of our dependencies are going to be installed
# into either the current directory or the .eggs directory. However the
# subprocess won't know to activate these dependencies, so we'll get it
# to do so by passing our entire sys.path into the subprocess via the
# PYTHONPATH environment variable.
env = os.environ.copy()
env["PYTHONPATH"] = os.pathsep.join(sys.path)
with engine_name.open('w') as out:
subprocess.check_call(
[sys.executable, "-c", engine_printer],
env=env,
stdout=out,
stderr=subprocess.PIPE,
)
osrandom_engine_name = backend._ffi.string(
backend._lib.Cryptography_osrandom_engine_name
)
assert engine_name.read().encode('ascii') == osrandom_engine_name
def test_osrandom_sanity_check(self):
# This test serves as a check against catastrophic failure.
buf = backend._ffi.new("unsigned char[]", 500)
res = backend._lib.RAND_bytes(buf, 500)
assert res == 1
assert backend._ffi.buffer(buf)[:] != "\x00" * 500
def test_activate_osrandom_no_default(self):
backend.activate_builtin_random()
e = backend._lib.ENGINE_get_default_RAND()
assert e == backend._ffi.NULL
backend.activate_osrandom_engine()
e = backend._lib.ENGINE_get_default_RAND()
name = backend._lib.ENGINE_get_name(e)
assert name == backend._lib.Cryptography_osrandom_engine_name
res = backend._lib.ENGINE_free(e)
assert res == 1
def test_activate_builtin_random(self):
e = backend._lib.ENGINE_get_default_RAND()
assert e != backend._ffi.NULL
name = backend._lib.ENGINE_get_name(e)
assert name == backend._lib.Cryptography_osrandom_engine_name
res = backend._lib.ENGINE_free(e)
assert res == 1
backend.activate_builtin_random()
e = backend._lib.ENGINE_get_default_RAND()
assert e == backend._ffi.NULL
def test_activate_builtin_random_already_active(self):
backend.activate_builtin_random()
e = backend._lib.ENGINE_get_default_RAND()
assert e == backend._ffi.NULL
backend.activate_builtin_random()
e = backend._lib.ENGINE_get_default_RAND()
assert e == backend._ffi.NULL
def test_osrandom_engine_implementation(self):
name = backend.osrandom_engine_implementation()
assert name in ['/dev/urandom', 'CryptGenRandom', 'getentropy',
'getrandom']
if sys.platform.startswith('linux'):
assert name in ['getrandom', '/dev/urandom']
if sys.platform == 'darwin':
# macOS 10.12+ supports getentropy
if parse_version(os.uname()[2]) >= parse_version("16.0"):
assert name == 'getentropy'
else:
assert name == '/dev/urandom'
if sys.platform == 'win32':
assert name == 'CryptGenRandom'
def test_activate_osrandom_already_default(self):
e = backend._lib.ENGINE_get_default_RAND()
name = backend._lib.ENGINE_get_name(e)
assert name == backend._lib.Cryptography_osrandom_engine_name
res = backend._lib.ENGINE_free(e)
assert res == 1
backend.activate_osrandom_engine()
e = backend._lib.ENGINE_get_default_RAND()
name = backend._lib.ENGINE_get_name(e)
assert name == backend._lib.Cryptography_osrandom_engine_name
res = backend._lib.ENGINE_free(e)
assert res == 1
@pytest.mark.skipif(
backend._lib.Cryptography_HAS_ENGINE == 1,
reason="Requires OpenSSL without ENGINE support")
class TestOpenSSLNoEngine(object):
def test_no_engine_support(self):
assert backend._ffi.string(
backend._lib.Cryptography_osrandom_engine_id
) == b"no-engine-support"
assert backend._ffi.string(
backend._lib.Cryptography_osrandom_engine_name
) == b"osrandom_engine disabled due to no engine support"
def test_activate_builtin_random_does_nothing(self):
backend.activate_builtin_random()
def test_activate_osrandom_does_nothing(self):
backend.activate_osrandom_engine()
class TestOpenSSLRSA(object):
def test_generate_rsa_parameters_supported(self):
assert backend.generate_rsa_parameters_supported(1, 1024) is False
assert backend.generate_rsa_parameters_supported(4, 1024) is False
assert backend.generate_rsa_parameters_supported(3, 1024) is True
assert backend.generate_rsa_parameters_supported(3, 511) is False
def test_generate_bad_public_exponent(self):
with pytest.raises(ValueError):
backend.generate_rsa_private_key(public_exponent=1, key_size=2048)
with pytest.raises(ValueError):
backend.generate_rsa_private_key(public_exponent=4, key_size=2048)
def test_cant_generate_insecure_tiny_key(self):
with pytest.raises(ValueError):
backend.generate_rsa_private_key(public_exponent=65537,
key_size=511)
with pytest.raises(ValueError):
backend.generate_rsa_private_key(public_exponent=65537,
key_size=256)
def test_rsa_padding_unsupported_pss_mgf1_hash(self):
assert backend.rsa_padding_supported(
padding.PSS(mgf=padding.MGF1(DummyHashAlgorithm()), salt_length=0)
) is False
def test_rsa_padding_unsupported(self):
assert backend.rsa_padding_supported(DummyAsymmetricPadding()) is False
def test_rsa_padding_supported_pkcs1v15(self):
assert backend.rsa_padding_supported(padding.PKCS1v15()) is True
def test_rsa_padding_supported_pss(self):
assert backend.rsa_padding_supported(
padding.PSS(mgf=padding.MGF1(hashes.SHA1()), salt_length=0)
) is True
def test_rsa_padding_supported_oaep(self):
assert backend.rsa_padding_supported(
padding.OAEP(
mgf=padding.MGF1(algorithm=hashes.SHA1()),
algorithm=hashes.SHA1(),
label=None
),
) is True
@pytest.mark.skipif(
backend._lib.Cryptography_HAS_RSA_OAEP_MD == 0,
reason="Requires OpenSSL with rsa_oaep_md (1.0.2+)"
)
def test_rsa_padding_supported_oaep_sha2_combinations(self):
hashalgs = [
hashes.SHA1(),
hashes.SHA224(),
hashes.SHA256(),
hashes.SHA384(),
hashes.SHA512(),
]
for mgf1alg, oaepalg in itertools.product(hashalgs, hashalgs):
assert backend.rsa_padding_supported(
padding.OAEP(
mgf=padding.MGF1(algorithm=mgf1alg),
algorithm=oaepalg,
label=None
),
) is True
def test_rsa_padding_unsupported_mgf(self):
assert backend.rsa_padding_supported(
padding.OAEP(
mgf=DummyMGF(),
algorithm=hashes.SHA1(),
label=None
),
) is False
assert backend.rsa_padding_supported(
padding.PSS(mgf=DummyMGF(), salt_length=0)
) is False
@pytest.mark.skipif(
backend._lib.Cryptography_HAS_RSA_OAEP_MD == 1,
reason="Requires OpenSSL without rsa_oaep_md (< 1.0.2)"
)
def test_unsupported_mgf1_hash_algorithm_decrypt(self):
private_key = RSA_KEY_512.private_key(backend)
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_PADDING):
private_key.decrypt(
b"0" * 64,
padding.OAEP(
mgf=padding.MGF1(algorithm=hashes.SHA256()),
algorithm=hashes.SHA1(),
label=None
)
)
@pytest.mark.skipif(
backend._lib.Cryptography_HAS_RSA_OAEP_MD == 1,
reason="Requires OpenSSL without rsa_oaep_md (< 1.0.2)"
)
def test_unsupported_oaep_hash_algorithm_decrypt(self):
private_key = RSA_KEY_512.private_key(backend)
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_PADDING):
private_key.decrypt(
b"0" * 64,
padding.OAEP(
mgf=padding.MGF1(algorithm=hashes.SHA1()),
algorithm=hashes.SHA256(),
label=None
)
)
def test_unsupported_mgf1_hash_algorithm_md5_decrypt(self):
private_key = RSA_KEY_512.private_key(backend)
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_PADDING):
private_key.decrypt(
b"0" * 64,
padding.OAEP(
mgf=padding.MGF1(algorithm=hashes.MD5()),
algorithm=hashes.MD5(),
label=None
)
)
class TestOpenSSLCMAC(object):
def test_unsupported_cipher(self):
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_CIPHER):
backend.create_cmac_ctx(DummyCipherAlgorithm())
class TestOpenSSLSignX509Certificate(object):
def test_requires_certificate_builder(self):
private_key = RSA_KEY_2048.private_key(backend)
with pytest.raises(TypeError):
backend.create_x509_certificate(
object(), private_key, DummyHashAlgorithm()
)
class TestOpenSSLSignX509CertificateRevocationList(object):
def test_invalid_builder(self):
private_key = RSA_KEY_2048.private_key(backend)
with pytest.raises(TypeError):
backend.create_x509_crl(object(), private_key, hashes.SHA256())
class TestOpenSSLCreateRevokedCertificate(object):
def test_invalid_builder(self):
with pytest.raises(TypeError):
backend.create_x509_revoked_certificate(object())
class TestOpenSSLSerializationWithOpenSSL(object):
def test_pem_password_cb(self):
userdata = backend._ffi.new("CRYPTOGRAPHY_PASSWORD_DATA *")
pw = b"abcdefg"
password = backend._ffi.new("char []", pw)
userdata.password = password
userdata.length = len(pw)
buflen = 10
buf = backend._ffi.new("char []", buflen)
res = backend._lib.Cryptography_pem_password_cb(
buf, buflen, 0, userdata
)
assert res == len(pw)
assert userdata.called == 1
assert backend._ffi.buffer(buf, len(pw))[:] == pw
assert userdata.maxsize == buflen
assert userdata.error == 0
def test_pem_password_cb_no_password(self):
userdata = backend._ffi.new("CRYPTOGRAPHY_PASSWORD_DATA *")
buflen = 10
buf = backend._ffi.new("char []", buflen)
res = backend._lib.Cryptography_pem_password_cb(
buf, buflen, 0, userdata
)
assert res == 0
assert userdata.error == -1
def test_unsupported_evp_pkey_type(self):
key = backend._create_evp_pkey_gc()
with raises_unsupported_algorithm(None):
backend._evp_pkey_to_private_key(key)
with raises_unsupported_algorithm(None):
backend._evp_pkey_to_public_key(key)
def test_very_long_pem_serialization_password(self):
password = b"x" * 1024
with pytest.raises(ValueError):
load_vectors_from_file(
os.path.join(
"asymmetric", "Traditional_OpenSSL_Serialization",
"key1.pem"
),
lambda pemfile: (
backend.load_pem_private_key(
pemfile.read().encode(), password
)
)
)
class TestOpenSSLEllipticCurve(object):
def test_sn_to_elliptic_curve_not_supported(self):
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_ELLIPTIC_CURVE):
_sn_to_elliptic_curve(backend, b"fake")
@pytest.mark.requires_backend_interface(interface=RSABackend)
class TestRSAPEMSerialization(object):
def test_password_length_limit(self):
password = b"x" * 1024
key = RSA_KEY_2048.private_key(backend)
with pytest.raises(ValueError):
key.private_bytes(
serialization.Encoding.PEM,
serialization.PrivateFormat.PKCS8,
serialization.BestAvailableEncryption(password)
)
class TestGOSTCertificate(object):
def test_numeric_string_x509_name_entry(self):
cert = _load_cert(
os.path.join("x509", "e-trust.ru.der"),
x509.load_der_x509_certificate,
backend
)
if backend._lib.CRYPTOGRAPHY_OPENSSL_LESS_THAN_102I:
with pytest.raises(ValueError) as exc:
cert.subject
# We assert on the message in this case because if the certificate
# fails to load it will also raise a ValueError and this test could
# erroneously pass.
assert str(exc.value) == "Unsupported ASN1 string type. Type: 18"
else:
assert cert.subject.get_attributes_for_oid(
x509.ObjectIdentifier("1.2.643.3.131.1.1")
)[0].value == "007710474375"
@pytest.mark.skipif(
backend._lib.Cryptography_HAS_EVP_PKEY_DHX == 1,
reason="Requires OpenSSL without EVP_PKEY_DHX (< 1.0.2)")
@pytest.mark.requires_backend_interface(interface=DHBackend)
class TestOpenSSLDHSerialization(object):
@pytest.mark.parametrize(
"vector",
load_vectors_from_file(
os.path.join("asymmetric", "DH", "RFC5114.txt"),
load_nist_vectors))
def test_dh_serialization_with_q_unsupported(self, backend, vector):
parameters = dh.DHParameterNumbers(int(vector["p"], 16),
int(vector["g"], 16),
int(vector["q"], 16))
public = dh.DHPublicNumbers(int(vector["ystatcavs"], 16), parameters)
private = dh.DHPrivateNumbers(int(vector["xstatcavs"], 16), public)
private_key = private.private_key(backend)
public_key = private_key.public_key()
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_SERIALIZATION):
private_key.private_bytes(serialization.Encoding.PEM,
serialization.PrivateFormat.PKCS8,
serialization.NoEncryption())
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_SERIALIZATION):
public_key.public_bytes(
serialization.Encoding.PEM,
serialization.PublicFormat.SubjectPublicKeyInfo)
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_SERIALIZATION):
parameters.parameters(backend).parameter_bytes(
serialization.Encoding.PEM,
serialization.ParameterFormat.PKCS3)
@pytest.mark.parametrize(
("key_path", "loader_func"),
[
(
os.path.join("asymmetric", "DH", "dhkey_rfc5114_2.pem"),
serialization.load_pem_private_key,
),
(
os.path.join("asymmetric", "DH", "dhkey_rfc5114_2.der"),
serialization.load_der_private_key,
)
]
)
def test_private_load_dhx_unsupported(self, key_path, loader_func,
backend):
key_bytes = load_vectors_from_file(
key_path,
lambda pemfile: pemfile.read(), mode="rb"
)
with pytest.raises(ValueError):
loader_func(key_bytes, None, backend)
@pytest.mark.parametrize(
("key_path", "loader_func"),
[
(
os.path.join("asymmetric", "DH", "dhpub_rfc5114_2.pem"),
serialization.load_pem_public_key,
),
(
os.path.join("asymmetric", "DH", "dhpub_rfc5114_2.der"),
serialization.load_der_public_key,
)
]
)
def test_public_load_dhx_unsupported(self, key_path, loader_func,
backend):
key_bytes = load_vectors_from_file(
key_path,
lambda pemfile: pemfile.read(), mode="rb"
)
with pytest.raises(ValueError):
loader_func(key_bytes, backend)
|