# 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 base64 import datetime import os from typing import Optional import pytest from cryptography import utils, x509 from cryptography.exceptions import UnsupportedAlgorithm from cryptography.hazmat.primitives import hashes, serialization from cryptography.hazmat.primitives.asymmetric import ec, ed448, ed25519, rsa from cryptography.hazmat.primitives.asymmetric.padding import PKCS1v15 from cryptography.x509 import ocsp from ..hazmat.primitives.fixtures_ec import EC_KEY_SECP256R1 from ..utils import load_vectors_from_file, raises_unsupported_algorithm from .test_x509 import DummyExtension, _load_cert def _load_data(filename, loader): return load_vectors_from_file( filename=filename, loader=lambda data: loader(data.read()), mode="rb" ) def _cert_and_issuer(): cert = _load_cert( os.path.join("x509", "cryptography.io.pem"), x509.load_pem_x509_certificate, ) issuer = _load_cert( os.path.join("x509", "rapidssl_sha256_ca_g3.pem"), x509.load_pem_x509_certificate, ) return cert, issuer def _generate_root(private_key=None, algorithm=hashes.SHA256()): from cryptography.hazmat.backends.openssl.backend import backend if private_key is None: private_key = EC_KEY_SECP256R1.private_key(backend) subject = x509.Name( [ x509.NameAttribute(x509.NameOID.COUNTRY_NAME, "US"), x509.NameAttribute(x509.NameOID.COMMON_NAME, "Cryptography CA"), ] ) builder = ( x509.CertificateBuilder() .serial_number(123456789) .issuer_name(subject) .subject_name(subject) .public_key(private_key.public_key()) .not_valid_before(datetime.datetime.now()) .not_valid_after( datetime.datetime.now() + datetime.timedelta(days=3650) ) ) cert = builder.sign(private_key, algorithm, backend) return cert, private_key def _check_ocsp_response_times( ocsp_resp: ocsp.OCSPResponse, this_update: datetime.datetime, next_update: Optional[datetime.datetime], revocation_time: Optional[datetime.datetime], ) -> None: with pytest.warns(utils.DeprecatedIn43): assert ocsp_resp.this_update == this_update assert ocsp_resp.this_update_utc == this_update.replace( tzinfo=datetime.timezone.utc ) with pytest.warns(utils.DeprecatedIn43): assert ocsp_resp.next_update == next_update assert ocsp_resp.next_update_utc == ( next_update.replace(tzinfo=datetime.timezone.utc) if next_update is not None else None ) with pytest.warns(utils.DeprecatedIn43): assert ocsp_resp.revocation_time == revocation_time assert ocsp_resp.revocation_time_utc == ( revocation_time.replace(tzinfo=datetime.timezone.utc) if revocation_time is not None else None ) class TestOCSPRequest: def test_bad_request(self): with pytest.raises(ValueError): ocsp.load_der_ocsp_request(b"invalid") def test_load_request(self): req = _load_data( os.path.join("x509", "ocsp", "req-sha1.der"), ocsp.load_der_ocsp_request, ) assert isinstance(req, ocsp.OCSPRequest) assert req.issuer_name_hash == ( b"8\xcaF\x8c\x07D\x8d\xf4\x81\x96\xc7mmLpQ\x9e`\xa7\xbd" ) assert req.issuer_key_hash == ( b"yu\xbb\x84:\xcb,\xdez\t\xbe1\x1bC\xbc\x1c*MSX" ) assert isinstance(req.hash_algorithm, hashes.SHA1) assert req.serial_number == int( "98D9E5C0B4C373552DF77C5D0F1EB5128E4945F9", 16 ) assert len(req.extensions) == 0 def test_load_request_with_extensions(self): req = _load_data( os.path.join("x509", "ocsp", "req-ext-nonce.der"), ocsp.load_der_ocsp_request, ) assert len(req.extensions) == 1 ext = req.extensions[0] assert ext.critical is False assert ext.value == x509.OCSPNonce( b"{\x80Z\x1d7&\xb8\xb8OH\xd2\xf8\xbf\xd7-\xfd" ) def test_load_request_with_acceptable_responses(self): req = _load_data( os.path.join("x509", "ocsp", "req-acceptable-responses.der"), ocsp.load_der_ocsp_request, ) assert len(req.extensions) == 1 ext = req.extensions[0] assert ext.critical is False assert ext.value == x509.OCSPAcceptableResponses( [x509.ObjectIdentifier("1.3.6.1.5.5.7.48.1.1")] ) def test_load_request_with_unknown_extension(self): req = _load_data( os.path.join("x509", "ocsp", "req-ext-unknown-oid.der"), ocsp.load_der_ocsp_request, ) assert len(req.extensions) == 1 ext = req.extensions[0] assert ext.critical is False assert ext.value == x509.UnrecognizedExtension( x509.ObjectIdentifier("1.3.6.1.5.5.7.48.1.2213"), b"\x04\x10{\x80Z\x1d7&\xb8\xb8OH\xd2\xf8\xbf\xd7-\xfd", ) def test_load_request_with_duplicate_extension(self): req = _load_data( os.path.join("x509", "ocsp", "req-duplicate-ext.der"), ocsp.load_der_ocsp_request, ) with pytest.raises(x509.DuplicateExtension): req.extensions def test_load_request_two_requests(self): with pytest.raises(NotImplementedError): _load_data( os.path.join("x509", "ocsp", "req-multi-sha1.der"), ocsp.load_der_ocsp_request, ) def test_invalid_hash_algorithm(self): req = _load_data( os.path.join("x509", "ocsp", "req-invalid-hash-alg.der"), ocsp.load_der_ocsp_request, ) with raises_unsupported_algorithm(None): req.hash_algorithm def test_serialize_request(self): req_bytes = load_vectors_from_file( filename=os.path.join("x509", "ocsp", "req-sha1.der"), loader=lambda data: data.read(), mode="rb", ) req = ocsp.load_der_ocsp_request(req_bytes) assert req.public_bytes(serialization.Encoding.DER) == req_bytes def test_invalid_serialize_encoding(self): req = _load_data( os.path.join("x509", "ocsp", "req-sha1.der"), ocsp.load_der_ocsp_request, ) with pytest.raises(ValueError): req.public_bytes("invalid") with pytest.raises(ValueError): req.public_bytes(serialization.Encoding.PEM) class TestOCSPRequestBuilder: def test_add_cert_twice(self): cert, issuer = _cert_and_issuer() builder = ocsp.OCSPRequestBuilder() builder = builder.add_certificate(cert, issuer, hashes.SHA1()) # Fails calling a second time with pytest.raises(ValueError): builder.add_certificate(cert, issuer, hashes.SHA1()) # Fails calling a second time with add_certificate_by_hash with pytest.raises(ValueError): builder.add_certificate_by_hash( b"0" * 20, b"0" * 20, 1, hashes.SHA1() ) def test_add_cert_by_hash_twice(self): cert, issuer = _cert_and_issuer() builder = ocsp.OCSPRequestBuilder() builder = builder.add_certificate_by_hash( b"0" * 20, b"0" * 20, 1, hashes.SHA1() ) # Fails calling a second time with pytest.raises(ValueError): builder.add_certificate_by_hash( b"0" * 20, b"0" * 20, 1, hashes.SHA1() ) # Fails calling a second time with add_certificate with pytest.raises(ValueError): builder.add_certificate(cert, issuer, hashes.SHA1()) def test_add_cert_by_hash_bad_hash(self): builder = ocsp.OCSPRequestBuilder() with pytest.raises(ValueError): builder.add_certificate_by_hash( b"0" * 20, b"0" * 20, 1, "notahash", # type:ignore[arg-type] ) with pytest.raises(ValueError): builder.add_certificate_by_hash( b"0" * 19, b"0" * 20, 1, hashes.SHA1() ) with pytest.raises(ValueError): builder.add_certificate_by_hash( b"0" * 20, b"0" * 21, 1, hashes.SHA1() ) with pytest.raises(TypeError): builder.add_certificate_by_hash( b"0" * 20, b"0" * 20, "notanint", # type:ignore[arg-type] hashes.SHA1(), ) def test_create_ocsp_request_no_req(self): builder = ocsp.OCSPRequestBuilder() with pytest.raises(ValueError): builder.build() def test_create_ocsp_request_invalid_alg(self): cert, issuer = _cert_and_issuer() builder = ocsp.OCSPRequestBuilder() with pytest.raises(ValueError): builder.add_certificate(cert, issuer, hashes.MD5()) def test_add_extension_twice(self): builder = ocsp.OCSPRequestBuilder() builder = builder.add_extension(x509.OCSPNonce(b"123"), False) with pytest.raises(ValueError): builder.add_extension(x509.OCSPNonce(b"123"), False) def test_add_invalid_extension(self): builder = ocsp.OCSPRequestBuilder() with pytest.raises(TypeError): builder.add_extension( "notanext", # type:ignore[arg-type] False, ) def test_unsupported_extension(self): cert, issuer = _cert_and_issuer() builder = ( ocsp.OCSPRequestBuilder() .add_extension(DummyExtension(), critical=False) .add_certificate(cert, issuer, hashes.SHA256()) ) with pytest.raises(NotImplementedError): builder.build() def test_create_ocsp_request_invalid_cert(self): cert, issuer = _cert_and_issuer() builder = ocsp.OCSPRequestBuilder() with pytest.raises(TypeError): builder.add_certificate( b"notacert", # type:ignore[arg-type] issuer, hashes.SHA1(), ) with pytest.raises(TypeError): builder.add_certificate( cert, b"notacert", # type:ignore[arg-type] hashes.SHA1(), ) def test_create_ocsp_request(self): cert, issuer = _cert_and_issuer() builder = ocsp.OCSPRequestBuilder() builder = builder.add_certificate(cert, issuer, hashes.SHA1()) req = builder.build() serialized = req.public_bytes(serialization.Encoding.DER) assert serialized == base64.b64decode( b"MEMwQTA/MD0wOzAJBgUrDgMCGgUABBRAC0Z68eay0wmDug1gfn5ZN0gkxAQUw5zz" b"/NNGCDS7zkZ/oHxb8+IIy1kCAj8g" ) @pytest.mark.parametrize( ("ext", "critical"), [ [x509.OCSPNonce(b"0000"), False], [x509.OCSPNonce(b"\x00\x01\x02"), True], ], ) def test_create_ocsp_request_with_extension(self, ext, critical): cert, issuer = _cert_and_issuer() builder = ocsp.OCSPRequestBuilder() builder = builder.add_certificate( cert, issuer, hashes.SHA1() ).add_extension(ext, critical) req = builder.build() assert len(req.extensions) == 1 assert req.extensions[0].value == ext assert req.extensions[0].oid == ext.oid assert req.extensions[0].critical is critical def test_add_cert_by_hash(self): cert, _ = _cert_and_issuer() builder = ocsp.OCSPRequestBuilder() h = hashes.Hash(hashes.SHA1()) h.update(cert.issuer.public_bytes()) issuer_name_hash = h.finalize() # issuer_key_hash is a hash of the public key BitString DER, # not the subjectPublicKeyInfo issuer_key_hash = base64.b64decode(b"w5zz/NNGCDS7zkZ/oHxb8+IIy1k=") builder = builder.add_certificate_by_hash( issuer_name_hash, issuer_key_hash, cert.serial_number, hashes.SHA1(), ) req = builder.build() serialized = req.public_bytes(serialization.Encoding.DER) assert serialized == base64.b64decode( b"MEMwQTA/MD0wOzAJBgUrDgMCGgUABBRAC0Z68eay0wmDug1gfn5ZN0gkxAQUw5zz" b"/NNGCDS7zkZ/oHxb8+IIy1kCAj8g" ) class TestOCSPResponseBuilder: def test_add_response_twice(self): cert, issuer = _cert_and_issuer() time = datetime.datetime.now() builder = ocsp.OCSPResponseBuilder() builder = builder.add_response( cert, issuer, hashes.SHA256(), ocsp.OCSPCertStatus.GOOD, time, time, None, None, ) with pytest.raises(ValueError): builder.add_response( cert, issuer, hashes.SHA256(), ocsp.OCSPCertStatus.GOOD, time, time, None, None, ) def test_invalid_add_response(self): cert, issuer = _cert_and_issuer() time = datetime.datetime.now(datetime.timezone.utc).replace( tzinfo=None ) reason = x509.ReasonFlags.cessation_of_operation builder = ocsp.OCSPResponseBuilder() with pytest.raises(TypeError): builder.add_response( "bad", # type:ignore[arg-type] issuer, hashes.SHA256(), ocsp.OCSPCertStatus.GOOD, time, time, None, None, ) with pytest.raises(TypeError): builder.add_response( cert, "bad", # type:ignore[arg-type] hashes.SHA256(), ocsp.OCSPCertStatus.GOOD, time, time, None, None, ) with pytest.raises(ValueError): builder.add_response( cert, issuer, "notahash", # type:ignore[arg-type] ocsp.OCSPCertStatus.GOOD, time, time, None, None, ) with pytest.raises(TypeError): builder.add_response( cert, issuer, hashes.SHA256(), ocsp.OCSPCertStatus.GOOD, "bad", # type:ignore[arg-type] time, None, None, ) with pytest.raises(TypeError): builder.add_response( cert, issuer, hashes.SHA256(), ocsp.OCSPCertStatus.GOOD, time, "bad", # type:ignore[arg-type] None, None, ) with pytest.raises(TypeError): builder.add_response( cert, issuer, hashes.SHA256(), 0, # type:ignore[arg-type] time, time, None, None, ) with pytest.raises(ValueError): builder.add_response( cert, issuer, hashes.SHA256(), ocsp.OCSPCertStatus.GOOD, time, time, time, None, ) with pytest.raises(ValueError): builder.add_response( cert, issuer, hashes.SHA256(), ocsp.OCSPCertStatus.GOOD, time, time, None, reason, ) with pytest.raises(TypeError): builder.add_response( cert, issuer, hashes.SHA256(), ocsp.OCSPCertStatus.REVOKED, time, time, None, reason, ) with pytest.raises(TypeError): builder.add_response( cert, issuer, hashes.SHA256(), ocsp.OCSPCertStatus.REVOKED, time, time, time, 0, # type:ignore[arg-type] ) with pytest.raises(ValueError): builder.add_response( cert, issuer, hashes.SHA256(), ocsp.OCSPCertStatus.REVOKED, time, time, time - datetime.timedelta(days=36500), None, ) def test_invalid_certificates(self): builder = ocsp.OCSPResponseBuilder() with pytest.raises(ValueError): builder.certificates([]) with pytest.raises(TypeError): builder.certificates(["notacert"]) # type: ignore[list-item] with pytest.raises(TypeError): builder.certificates("invalid") # type: ignore[arg-type] _, issuer = _cert_and_issuer() builder = builder.certificates([issuer]) with pytest.raises(ValueError): builder.certificates([issuer]) def test_invalid_responder_id(self): builder = ocsp.OCSPResponseBuilder() cert, _ = _cert_and_issuer() with pytest.raises(TypeError): builder.responder_id( ocsp.OCSPResponderEncoding.HASH, "invalid", # type: ignore[arg-type] ) with pytest.raises(TypeError): builder.responder_id("notanenum", cert) # type: ignore[arg-type] builder = builder.responder_id(ocsp.OCSPResponderEncoding.NAME, cert) with pytest.raises(ValueError): builder.responder_id(ocsp.OCSPResponderEncoding.NAME, cert) def test_invalid_extension(self): builder = ocsp.OCSPResponseBuilder() with pytest.raises(TypeError): builder.add_extension( "notanextension", # type: ignore[arg-type] True, ) def test_unsupported_extension(self): root_cert, private_key = _generate_root() cert, issuer = _cert_and_issuer() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = ( ocsp.OCSPResponseBuilder() .responder_id(ocsp.OCSPResponderEncoding.NAME, root_cert) .add_response( cert, issuer, hashes.SHA256(), ocsp.OCSPCertStatus.GOOD, this_update, next_update, None, None, ) .add_extension(DummyExtension(), critical=False) ) with pytest.raises(NotImplementedError): builder.sign(private_key, hashes.SHA256()) def test_sign_no_response(self): builder = ocsp.OCSPResponseBuilder() root_cert, private_key = _generate_root() builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ) with pytest.raises(ValueError): builder.sign(private_key, hashes.SHA256()) def test_sign_no_responder_id(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() _, private_key = _generate_root() current_time = ( datetime.datetime.now().replace(tzinfo=None).replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = builder.add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.GOOD, this_update, next_update, None, None, ) with pytest.raises(ValueError): builder.sign(private_key, hashes.SHA256()) def test_sign_invalid_hash_algorithm(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, private_key = _generate_root() current_time = ( datetime.datetime.now().replace(tzinfo=None).replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.GOOD, this_update, next_update, None, None, ) with pytest.raises(TypeError): builder.sign(private_key, "notahash") # type: ignore[arg-type] def test_sign_good_cert(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, private_key = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.GOOD, this_update, next_update, None, None, ) resp = builder.sign(private_key, hashes.SHA256()) assert resp.responder_name == root_cert.subject assert resp.responder_key_hash is None with pytest.warns(utils.DeprecatedIn43): assert (current_time - resp.produced_at).total_seconds() < 10 assert ( current_time.replace(tzinfo=datetime.timezone.utc) - resp.produced_at_utc ).total_seconds() < 10 assert ( resp.signature_algorithm_oid == x509.SignatureAlgorithmOID.ECDSA_WITH_SHA256 ) assert resp.certificate_status == ocsp.OCSPCertStatus.GOOD assert resp.revocation_reason is None _check_ocsp_response_times( resp, this_update=this_update, next_update=next_update, revocation_time=None, ) private_key.public_key().verify( resp.signature, resp.tbs_response_bytes, ec.ECDSA(hashes.SHA256()) ) def test_sign_revoked_cert(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, private_key = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) revoked_date = this_update - datetime.timedelta(days=300) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.REVOKED, this_update, next_update, revoked_date, None, ) resp = builder.sign(private_key, hashes.SHA256()) assert resp.certificate_status == ocsp.OCSPCertStatus.REVOKED assert resp.revocation_reason is None _check_ocsp_response_times( resp, this_update=this_update, next_update=next_update, revocation_time=revoked_date, ) private_key.public_key().verify( resp.signature, resp.tbs_response_bytes, ec.ECDSA(hashes.SHA256()) ) def test_sign_unknown_cert(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, private_key = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.UNKNOWN, this_update, next_update, None, None, ) resp = builder.sign(private_key, hashes.SHA384()) assert resp.certificate_status == ocsp.OCSPCertStatus.UNKNOWN _check_ocsp_response_times( resp, this_update=this_update, next_update=next_update, revocation_time=None, ) private_key.public_key().verify( resp.signature, resp.tbs_response_bytes, ec.ECDSA(hashes.SHA384()) ) def test_sign_with_appended_certs(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, private_key = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = ( builder.responder_id(ocsp.OCSPResponderEncoding.NAME, root_cert) .add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.GOOD, this_update, next_update, None, None, ) .certificates([root_cert]) ) resp = builder.sign(private_key, hashes.SHA256()) assert resp.certificates == [root_cert] def test_sign_revoked_no_next_update(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, private_key = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) revoked_date = this_update - datetime.timedelta(days=300) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.REVOKED, this_update, None, revoked_date, None, ) resp = builder.sign(private_key, hashes.SHA256()) assert resp.certificate_status == ocsp.OCSPCertStatus.REVOKED assert resp.revocation_reason is None _check_ocsp_response_times( resp, this_update=this_update, next_update=None, revocation_time=revoked_date, ) private_key.public_key().verify( resp.signature, resp.tbs_response_bytes, ec.ECDSA(hashes.SHA256()) ) def test_sign_revoked_with_reason(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, private_key = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) revoked_date = this_update - datetime.timedelta(days=300) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.REVOKED, this_update, next_update, revoked_date, x509.ReasonFlags.key_compromise, ) resp = builder.sign(private_key, hashes.SHA256()) assert resp.certificate_status == ocsp.OCSPCertStatus.REVOKED assert resp.revocation_reason is x509.ReasonFlags.key_compromise _check_ocsp_response_times( resp, this_update=this_update, next_update=next_update, revocation_time=revoked_date, ) private_key.public_key().verify( resp.signature, resp.tbs_response_bytes, ec.ECDSA(hashes.SHA256()) ) def test_sign_responder_id_key_hash(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, private_key = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = builder.responder_id( ocsp.OCSPResponderEncoding.HASH, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.GOOD, this_update, next_update, None, None, ) resp = builder.sign(private_key, hashes.SHA256()) assert resp.responder_name is None assert resp.responder_key_hash == ( b"\x8ca\x94\xe0\x948\xed\x89\xd8\xd4N\x89p\t\xd6\xf9^_\xec}" ) private_key.public_key().verify( resp.signature, resp.tbs_response_bytes, ec.ECDSA(hashes.SHA256()) ) def test_invalid_sign_responder_cert_does_not_match_private_key(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, _ = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = builder.responder_id( ocsp.OCSPResponderEncoding.HASH, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.GOOD, this_update, next_update, None, None, ) from cryptography.hazmat.backends.openssl.backend import backend diff_key = ec.generate_private_key(ec.SECP256R1(), backend) with pytest.raises(ValueError): builder.sign(diff_key, hashes.SHA256()) def test_sign_with_extension(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, private_key = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = ( builder.responder_id(ocsp.OCSPResponderEncoding.HASH, root_cert) .add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.GOOD, this_update, next_update, None, None, ) .add_extension(x509.OCSPNonce(b"012345"), False) ) resp = builder.sign(private_key, hashes.SHA256()) assert len(resp.extensions) == 1 assert resp.extensions[0].value == x509.OCSPNonce(b"012345") assert resp.extensions[0].critical is False private_key.public_key().verify( resp.signature, resp.tbs_response_bytes, ec.ECDSA(hashes.SHA256()) ) @pytest.mark.parametrize( ("status", "der"), [ (ocsp.OCSPResponseStatus.MALFORMED_REQUEST, b"0\x03\n\x01\x01"), (ocsp.OCSPResponseStatus.INTERNAL_ERROR, b"0\x03\n\x01\x02"), (ocsp.OCSPResponseStatus.TRY_LATER, b"0\x03\n\x01\x03"), (ocsp.OCSPResponseStatus.SIG_REQUIRED, b"0\x03\n\x01\x05"), (ocsp.OCSPResponseStatus.UNAUTHORIZED, b"0\x03\n\x01\x06"), ], ) def test_build_non_successful_statuses(self, status, der): resp = ocsp.OCSPResponseBuilder.build_unsuccessful(status) assert resp.response_status is status assert resp.public_bytes(serialization.Encoding.DER) == der def test_invalid_build_not_a_status(self): with pytest.raises(TypeError): ocsp.OCSPResponseBuilder.build_unsuccessful( "notastatus" # type: ignore[arg-type] ) def test_invalid_build_successful_status(self): with pytest.raises(ValueError): ocsp.OCSPResponseBuilder.build_unsuccessful( ocsp.OCSPResponseStatus.SUCCESSFUL ) def test_sign_unknown_private_key(self, backend): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, _ = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.GOOD, this_update, next_update, None, None, ) with pytest.raises(TypeError): builder.sign(object(), hashes.SHA256()) # type:ignore[arg-type] @pytest.mark.supported( only_if=lambda backend: backend.hash_supported( hashes.BLAKE2b(digest_size=64) ), skip_message="Does not support BLAKE2b", ) def test_sign_unrecognized_hash_algorithm(self, backend): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, private_key = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.GOOD, this_update, next_update, None, None, ) with pytest.raises(UnsupportedAlgorithm): builder.sign(private_key, hashes.BLAKE2b(digest_size=64)) def test_sign_none_hash_not_eddsa(self): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() root_cert, private_key = _generate_root() current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.GOOD, this_update, next_update, None, None, ) with pytest.raises(TypeError): builder.sign(private_key, None) class TestSignedCertificateTimestampsExtension: def test_init(self): with pytest.raises(TypeError): x509.SignedCertificateTimestamps( [object()] # type: ignore[list-item] ) def test_repr(self): assert repr(x509.SignedCertificateTimestamps([])) == ( "" ) def test_eq(self, backend): sct1 = ( _load_data( os.path.join("x509", "ocsp", "resp-sct-extension.der"), ocsp.load_der_ocsp_response, ) .single_extensions.get_extension_for_class( x509.SignedCertificateTimestamps ) .value ) sct2 = ( _load_data( os.path.join("x509", "ocsp", "resp-sct-extension.der"), ocsp.load_der_ocsp_response, ) .single_extensions.get_extension_for_class( x509.SignedCertificateTimestamps ) .value ) assert sct1 == sct2 def test_ne(self, backend): sct1 = ( _load_data( os.path.join("x509", "ocsp", "resp-sct-extension.der"), ocsp.load_der_ocsp_response, ) .single_extensions.get_extension_for_class( x509.SignedCertificateTimestamps ) .value ) sct2 = x509.SignedCertificateTimestamps([]) assert sct1 != sct2 assert sct1 != object() def test_hash(self, backend): sct1 = ( _load_data( os.path.join("x509", "ocsp", "resp-sct-extension.der"), ocsp.load_der_ocsp_response, ) .single_extensions.get_extension_for_class( x509.SignedCertificateTimestamps ) .value ) sct2 = ( _load_data( os.path.join("x509", "ocsp", "resp-sct-extension.der"), ocsp.load_der_ocsp_response, ) .single_extensions.get_extension_for_class( x509.SignedCertificateTimestamps ) .value ) sct3 = x509.SignedCertificateTimestamps([]) assert hash(sct1) == hash(sct2) assert hash(sct1) != hash(sct3) def test_entry_type(self, backend): [sct, _, _, _] = ( _load_data( os.path.join("x509", "ocsp", "resp-sct-extension.der"), ocsp.load_der_ocsp_response, ) .single_extensions.get_extension_for_class( x509.SignedCertificateTimestamps ) .value ) assert ( sct.entry_type == x509.certificate_transparency.LogEntryType.X509_CERTIFICATE ) class TestOCSPResponse: def test_bad_response(self): with pytest.raises(ValueError): ocsp.load_der_ocsp_response(b"invalid") def test_load_response(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-sha256.der"), ocsp.load_der_ocsp_response, ) issuer = _load_cert( os.path.join("x509", "letsencryptx3.pem"), x509.load_pem_x509_certificate, ) assert isinstance(resp, ocsp.OCSPResponse) assert resp.response_status == ocsp.OCSPResponseStatus.SUCCESSFUL assert ( resp.signature_algorithm_oid == x509.SignatureAlgorithmOID.RSA_WITH_SHA256 ) assert isinstance(resp.signature_hash_algorithm, hashes.SHA256) assert resp.signature == base64.b64decode( b"I9KUlyLV/2LbNCVu1BQphxdNlU/jBzXsPYVscPjW5E93pCrSO84GkIWoOJtqsnt" b"78DLcQPnF3W24NXGzSGKlSWfXIsyoXCxnBm0mIbD5ZMnKyXEnqSR33Z9He/A+ML" b"A8gbrDUipGNPosesenkKUnOtFIzEGv29hV5E6AMP2ORPVsVlTAZegPJFbbVIWc0" b"rZGFCXKxijDxtUtgWzBhpBAI50JbPHi+IVuaOe4aDJLYgZ0BIBNa6bDI+rScyoy" b"5U0DToV7SZn6CoJ3U19X7BHdYn6TLX0xi43eXuzBGzdHnSzmsc7r/DvkAKJm3vb" b"dVECXqe/gFlXJUBcZ25jhs70MUA==" ) assert resp.tbs_response_bytes == base64.b64decode( b"MIHWoUwwSjELMAkGA1UEBhMCVVMxFjAUBgNVBAoTDUxldCdzIEVuY3J5cHQxIzA" b"hBgNVBAMTGkxldCdzIEVuY3J5cHQgQXV0aG9yaXR5IFgzGA8yMDE4MDgzMDExMT" b"UwMFowdTBzMEswCQYFKw4DAhoFAAQUfuZq53Kas/z4oiBkbBahLWBxCF0EFKhKa" b"mMEfd265tE5t6ZFZe/zqOyhAhIDHHh6fckClQB7xfIiCztSevCAABgPMjAxODA4" b"MzAxMTAwMDBaoBEYDzIwMTgwOTA2MTEwMDAwWg==" ) public_key = issuer.public_key() assert isinstance(public_key, rsa.RSAPublicKey) public_key.verify( resp.signature, resp.tbs_response_bytes, PKCS1v15(), resp.signature_hash_algorithm, ) assert resp.certificates == [] assert resp.responder_key_hash is None assert resp.responder_name == issuer.subject with pytest.warns(utils.DeprecatedIn43): assert resp.produced_at == datetime.datetime(2018, 8, 30, 11, 15) assert resp.produced_at_utc == datetime.datetime( 2018, 8, 30, 11, 15, tzinfo=datetime.timezone.utc ) assert resp.certificate_status == ocsp.OCSPCertStatus.GOOD assert resp.revocation_reason is None _check_ocsp_response_times( resp, this_update=datetime.datetime(2018, 8, 30, 11, 0), next_update=datetime.datetime(2018, 9, 6, 11, 0), revocation_time=None, ) assert resp.issuer_key_hash == ( b"\xa8Jjc\x04}\xdd\xba\xe6\xd19\xb7\xa6Ee\xef\xf3\xa8\xec\xa1" ) assert resp.issuer_name_hash == ( b"~\xe6j\xe7r\x9a\xb3\xfc\xf8\xa2 dl\x16\xa1-`q\x08]" ) assert isinstance(resp.hash_algorithm, hashes.SHA1) assert resp.serial_number == 271024907440004808294641238224534273948400 assert len(resp.extensions) == 0 def test_load_multi_valued_response(self): resp = _load_data( os.path.join("x509", "ocsp", "ocsp-army.deps.mil-resp.der"), ocsp.load_der_ocsp_response, ) with pytest.raises(ValueError): resp.serial_number assert isinstance(next(resp.responses), ocsp.OCSPSingleResponse) assert len(list(resp.responses)) == 20 def test_multi_valued_responses(self): req_valid = _load_data( os.path.join("x509", "ocsp", "ocsp-army.valid-req.der"), ocsp.load_der_ocsp_request, ) req_revoked = _load_data( os.path.join("x509", "ocsp", "ocsp-army.revoked-req.der"), ocsp.load_der_ocsp_request, ) req_irrelevant = _load_data( os.path.join("x509", "ocsp", "ocsp-army.inapplicable-req.der"), ocsp.load_der_ocsp_request, ) resp = _load_data( os.path.join("x509", "ocsp", "ocsp-army.deps.mil-resp.der"), ocsp.load_der_ocsp_response, ) for elem in resp.responses: serial = elem.serial_number assert req_irrelevant.serial_number != serial if req_valid.serial_number == serial: assert elem.issuer_key_hash == req_valid.issuer_key_hash assert elem.issuer_name_hash == req_valid.issuer_name_hash assert ( elem.hash_algorithm.name == req_valid.hash_algorithm.name ) assert elem.certificate_status == ocsp.OCSPCertStatus.GOOD with pytest.warns(utils.DeprecatedIn43): assert elem.this_update == datetime.datetime( 2020, 2, 22, 0, 0 ) assert elem.this_update_utc == datetime.datetime( 2020, 2, 22, 0, 0, tzinfo=datetime.timezone.utc ) with pytest.warns(utils.DeprecatedIn43): assert elem.next_update == datetime.datetime( 2020, 2, 29, 1, 0 ) assert elem.next_update_utc == datetime.datetime( 2020, 2, 29, 1, 0, tzinfo=datetime.timezone.utc ) elif req_revoked.serial_number == serial: assert elem.certificate_status == ocsp.OCSPCertStatus.REVOKED assert ( elem.revocation_reason == x509.ReasonFlags.cessation_of_operation ) with pytest.warns(utils.DeprecatedIn43): assert elem.revocation_time == datetime.datetime( 2018, 5, 30, 14, 1, 39 ) assert elem.revocation_time_utc == datetime.datetime( 2018, 5, 30, 14, 1, 39, tzinfo=datetime.timezone.utc ) def test_load_unauthorized(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-unauthorized.der"), ocsp.load_der_ocsp_response, ) assert resp.response_status == ocsp.OCSPResponseStatus.UNAUTHORIZED with pytest.raises(ValueError): resp.signature_algorithm_oid with pytest.raises(ValueError): resp.signature_hash_algorithm with pytest.raises(ValueError): resp.signature with pytest.raises(ValueError): resp.tbs_response_bytes with pytest.raises(ValueError): resp.certificates with pytest.raises(ValueError): resp.responder_key_hash with pytest.raises(ValueError): resp.responder_name with pytest.raises(ValueError), pytest.warns(utils.DeprecatedIn43): resp.produced_at with pytest.raises(ValueError): resp.produced_at_utc with pytest.raises(ValueError): resp.certificate_status with pytest.raises(ValueError), pytest.warns(utils.DeprecatedIn43): resp.revocation_time with pytest.raises(ValueError): resp.revocation_time_utc with pytest.raises(ValueError): resp.revocation_reason with pytest.raises(ValueError), pytest.warns(utils.DeprecatedIn43): resp.this_update with pytest.raises(ValueError): resp.this_update_utc with pytest.raises(ValueError), pytest.warns(utils.DeprecatedIn43): resp.next_update with pytest.raises(ValueError): resp.next_update_utc with pytest.raises(ValueError): resp.issuer_key_hash with pytest.raises(ValueError): resp.issuer_name_hash with pytest.raises(ValueError): resp.hash_algorithm with pytest.raises(ValueError): resp.serial_number with pytest.raises(ValueError): resp.extensions def test_load_revoked(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-revoked.der"), ocsp.load_der_ocsp_response, ) assert resp.certificate_status == ocsp.OCSPCertStatus.REVOKED with pytest.warns(utils.DeprecatedIn43): assert resp.revocation_time == datetime.datetime( 2016, 9, 2, 21, 28, 48 ) assert resp.revocation_time_utc == datetime.datetime( 2016, 9, 2, 21, 28, 48, tzinfo=datetime.timezone.utc ) assert resp.revocation_reason is None def test_load_delegate_unknown_cert(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-delegate-unknown-cert.der"), ocsp.load_der_ocsp_response, ) assert len(resp.certificates) == 1 assert isinstance(resp.certificates[0], x509.Certificate) assert resp.certificate_status == ocsp.OCSPCertStatus.UNKNOWN def test_load_invalid_signature_oid(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-invalid-signature-oid.der"), ocsp.load_der_ocsp_response, ) assert resp.signature_algorithm_oid == x509.ObjectIdentifier( "1.2.840.113549.1.1.2" ) with raises_unsupported_algorithm(None): resp.signature_hash_algorithm def test_unknown_hash_algorithm(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-unknown-hash-alg.der"), ocsp.load_der_ocsp_response, ) with raises_unsupported_algorithm(None): resp.hash_algorithm def test_load_responder_key_hash(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-responder-key-hash.der"), ocsp.load_der_ocsp_response, ) assert resp.responder_name is None assert resp.responder_key_hash == ( b"\x0f\x80a\x1c\x821a\xd5/(\xe7\x8dF8\xb4,\xe1\xc6\xd9\xe2" ) def test_load_revoked_reason(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-revoked-reason.der"), ocsp.load_der_ocsp_response, ) assert resp.revocation_reason is x509.ReasonFlags.superseded def test_load_revoked_no_next_update(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-revoked-no-next-update.der"), ocsp.load_der_ocsp_response, ) assert resp.serial_number == 16160 with pytest.warns(utils.DeprecatedIn43): assert resp.next_update is None assert resp.next_update_utc is None def test_response_extensions(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-revoked-reason.der"), ocsp.load_der_ocsp_response, ) assert len(resp.extensions) == 1 ext = resp.extensions[0] assert ext.critical is False assert ext.value == x509.OCSPNonce( b'5\x957\x9fa\x03\x83\x87\x89rW\x8f\xae\x99\xf7"' ) def test_response_unknown_extension(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-unknown-extension.der"), ocsp.load_der_ocsp_response, ) assert len(resp.extensions) == 1 ext = resp.extensions[0] assert ext.critical is False assert ext.value == x509.UnrecognizedExtension( x509.ObjectIdentifier("1.3.6.1.5.5.7.48.1.2.200"), b'\x04\x105\x957\x9fa\x03\x83\x87\x89rW\x8f\xae\x99\xf7"', ) def test_serialize_reponse(self): resp_bytes = load_vectors_from_file( filename=os.path.join("x509", "ocsp", "resp-revoked.der"), loader=lambda data: data.read(), mode="rb", ) resp = ocsp.load_der_ocsp_response(resp_bytes) assert resp.public_bytes(serialization.Encoding.DER) == resp_bytes def test_invalid_serialize_encoding(self): resp = _load_data( os.path.join("x509", "ocsp", "resp-revoked.der"), ocsp.load_der_ocsp_response, ) with pytest.raises(ValueError): resp.public_bytes("invalid") with pytest.raises(ValueError): resp.public_bytes(serialization.Encoding.PEM) def test_single_extensions_sct(self, backend): resp = _load_data( os.path.join("x509", "ocsp", "resp-sct-extension.der"), ocsp.load_der_ocsp_response, ) assert len(resp.single_extensions) == 1 ext = resp.single_extensions[0] assert ext.oid == x509.ObjectIdentifier("1.3.6.1.4.1.11129.2.4.5") assert len(ext.value) == 4 log_ids = [base64.b64encode(sct.log_id) for sct in ext.value] assert log_ids == [ b"RJRlLrDuzq/EQAfYqP4owNrmgr7YyzG1P9MzlrW2gag=", b"b1N2rDHwMRnYmQCkURX/dxUcEdkCwQApBo2yCJo32RM=", b"u9nfvB+KcbWTlCOXqpJ7RzhXlQqrUugakJZkNo4e0YU=", b"7ku9t3XOYLrhQmkfq+GeZqMPfl+wctiDAMR7iXqo/cs=", ] def test_single_extensions(self, backend): resp = _load_data( os.path.join("x509", "ocsp", "resp-single-extension-reason.der"), ocsp.load_der_ocsp_response, ) assert len(resp.single_extensions) == 1 ext = resp.single_extensions[0] assert ext.oid == x509.CRLReason.oid assert ext.value == x509.CRLReason(x509.ReasonFlags.unspecified) def test_unknown_response_type(self): with pytest.raises(ValueError): _load_data( os.path.join( "x509", "ocsp", "resp-response-type-unknown-oid.der" ), ocsp.load_der_ocsp_response, ) def test_response_bytes_absent(self): with pytest.raises(ValueError): _load_data( os.path.join( "x509", "ocsp", "resp-successful-no-response-bytes.der" ), ocsp.load_der_ocsp_response, ) def test_unknown_response_status(self): with pytest.raises(ValueError): _load_data( os.path.join( "x509", "ocsp", "resp-unknown-response-status.der" ), ocsp.load_der_ocsp_response, ) class TestOCSPEdDSA: @pytest.mark.supported( only_if=lambda backend: backend.ed25519_supported(), skip_message="Requires OpenSSL with Ed25519 support / OCSP", ) def test_invalid_algorithm(self, backend): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() private_key = ed25519.Ed25519PrivateKey.generate() root_cert, _ = _generate_root(private_key, None) current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) revoked_date = this_update - datetime.timedelta(days=300) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.REVOKED, this_update, next_update, revoked_date, x509.ReasonFlags.key_compromise, ) with pytest.raises(ValueError): builder.sign(private_key, hashes.SHA256()) @pytest.mark.supported( only_if=lambda backend: backend.ed25519_supported(), skip_message="Requires OpenSSL with Ed25519 support / OCSP", ) def test_sign_ed25519(self, backend): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() private_key = ed25519.Ed25519PrivateKey.generate() root_cert, _ = _generate_root(private_key, None) current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) revoked_date = this_update - datetime.timedelta(days=300) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.REVOKED, this_update, next_update, revoked_date, x509.ReasonFlags.key_compromise, ) resp = builder.sign(private_key, None) assert resp.certificate_status == ocsp.OCSPCertStatus.REVOKED assert resp.revocation_reason is x509.ReasonFlags.key_compromise _check_ocsp_response_times( resp, this_update=this_update, next_update=next_update, revocation_time=revoked_date, ) assert resp.signature_hash_algorithm is None assert ( resp.signature_algorithm_oid == x509.SignatureAlgorithmOID.ED25519 ) private_key.public_key().verify( resp.signature, resp.tbs_response_bytes ) @pytest.mark.supported( only_if=lambda backend: backend.ed448_supported(), skip_message="Requires OpenSSL with Ed448 support / OCSP", ) def test_sign_ed448(self, backend): builder = ocsp.OCSPResponseBuilder() cert, issuer = _cert_and_issuer() private_key = ed448.Ed448PrivateKey.generate() root_cert, _ = _generate_root(private_key, None) current_time = ( datetime.datetime.now(datetime.timezone.utc) .replace(tzinfo=None) .replace(microsecond=0) ) this_update = current_time - datetime.timedelta(days=1) next_update = this_update + datetime.timedelta(days=7) revoked_date = this_update - datetime.timedelta(days=300) builder = builder.responder_id( ocsp.OCSPResponderEncoding.NAME, root_cert ).add_response( cert, issuer, hashes.SHA1(), ocsp.OCSPCertStatus.REVOKED, this_update, next_update, revoked_date, x509.ReasonFlags.key_compromise, ) resp = builder.sign(private_key, None) assert resp.certificate_status == ocsp.OCSPCertStatus.REVOKED assert resp.revocation_reason is x509.ReasonFlags.key_compromise _check_ocsp_response_times( resp, this_update=this_update, next_update=next_update, revocation_time=revoked_date, ) assert resp.signature_hash_algorithm is None assert resp.signature_algorithm_oid == x509.SignatureAlgorithmOID.ED448 private_key.public_key().verify( resp.signature, resp.tbs_response_bytes )