def _verify_certificate_chain(server_certificate_chain: List[str], trust_store: TrustStore) -> PathValidationResult:
server_chain_as_x509s = [X509(pem_cert) for pem_cert in server_certificate_chain]
chain_verifier = CertificateChainVerifier.from_file(trust_store.path)
verified_chain: Optional[List[Certificate]]
try:
openssl_verify_str = None
verified_chain_as_509s = chain_verifier.verify(server_chain_as_x509s)
verified_chain = [
load_pem_x509_certificate(x509_cert.as_pem().encode("ascii"), backend=default_backend())
for x509_cert in verified_chain_as_509s
]
except CertificateChainVerificationFailed as e:
verified_chain = None
openssl_verify_str = e.openssl_error_string
return PathValidationResult(
trust_store=trust_store, verified_certificate_chain=verified_chain, openssl_error_string=openssl_verify_str
)
def test_valid_certificate_chain(self, certificate_chain_as_x509):
path_validator = CertificateChainVerifier.from_file(
Path(__file__).absolute().parent / "mozilla.pem")
path_validator.verify(certificate_chain_as_x509)
def test_expired_certificate_chain(self):
expired_leaf = """-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----"""
expired_intermediate = """-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----"""
path_validator = CertificateChainVerifier.from_file(
Path(__file__).absolute().parent / "mozilla.pem")
try:
path_validator.verify(
[X509(expired_leaf),
X509(expired_intermediate)])
except CertificateChainVerificationFailed as e:
assert 10 == e.openssl_error_code # 10 is the error code for an expired certificate
assert e.openssl_error_string