Class TestPurePythonRsa

tests/algorithms/test_RSA.py:194–218

@pytest.mark.skipif(PurePythonRSAKey is None, reason="python-rsa backend not available")
class TestPurePythonRsa:
    def test_python_rsa_legacy_pem_read(self):
        key = PurePythonRSAKey(LEGACY_INVALID_PRIVATE_KEY_PKCS8_PEM, ALGORITHMS.RS256)
        new_pem = key.to_pem(pem_format="PKCS8")
        assert new_pem != LEGACY_INVALID_PRIVATE_KEY_PKCS8_PEM

    def test_python_rsa_legacy_pem_invalid(self):
        with pytest.raises(JWKError) as excinfo:
            PurePythonRSAKey(_actually_invalid_private_key_pkcs8_pem(), ALGORITHMS.RS256)

        excinfo.match("Invalid private key encoding")

    def test_python_rsa_legacy_private_key_pkcs8_to_pkcs1(self):
        legacy_key = _legacy_invalid_private_key_pkcs8_der()
        legacy_pkcs1 = legacy_key[len(rsa_backend.LEGACY_INVALID_PKCS8_RSA_HEADER) :]

        assert rsa_backend._legacy_private_key_pkcs8_to_pkcs1(legacy_key) == legacy_pkcs1

    def test_python_rsa_legacy_private_key_pkcs8_to_pkcs1_invalid(self):
        invalid_key = _actually_invalid_private_key_pkcs8_der()

        with pytest.raises(ValueError) as excinfo:
            rsa_backend._legacy_private_key_pkcs8_to_pkcs1(invalid_key)

        excinfo.match("Invalid private key encoding")


@pytest.mark.cryptography