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"""Unit test for KNX/IP SecureWrapper objects."""
from xknx.knxip import KNXIPFrame, SecureWrapper
class TestKNXIPSecureWrapper:
"""Test class for KNX/IP SecureWrapper objects."""
def test_secure_wrapper(self) -> None:
"""Test parsing and streaming secure wrapper KNX/IP packet."""
sequence_number = bytes.fromhex("00 00 00 00 00 00")
knx_serial_number = bytes.fromhex("00 fa 12 34 56 78")
message_tag = bytes.fromhex("af fe")
encrypted_data = bytes.fromhex(
"79 15 a4 f3 6e 6e 42 08" # SessionAuthenticate Frame
"d2 8b 4a 20 7d 8f 35 c0"
"d1 38 c2 6a 7b 5e 71 69"
)
message_authentication_code = bytes.fromhex(
"52 db a8 e7 e4 bd 80 bd 7d 86 8a 3a e7 87 49 de"
)
raw = (
bytes.fromhex(
"06 10 09 50 00 3e" # KNXnet/IP header
"00 01" # Secure Session Identifier
)
+ sequence_number
+ knx_serial_number
+ message_tag
+ encrypted_data
+ message_authentication_code
)
knxipframe, _ = KNXIPFrame.from_knx(raw)
assert isinstance(knxipframe.body, SecureWrapper)
assert knxipframe.body.secure_session_id == 1
assert knxipframe.body.sequence_information == sequence_number
assert knxipframe.body.serial_number == knx_serial_number
assert knxipframe.body.message_tag == message_tag
assert knxipframe.body.encrypted_data == encrypted_data
assert (
knxipframe.body.message_authentication_code == message_authentication_code
)
assert knxipframe.to_knx() == raw
secure_wrapper = SecureWrapper(
secure_session_id=1,
sequence_information=sequence_number,
serial_number=knx_serial_number,
message_tag=message_tag,
encrypted_data=encrypted_data,
message_authentication_code=message_authentication_code,
)
knxipframe2 = KNXIPFrame.init_from_body(secure_wrapper)
assert knxipframe2.to_knx() == raw
|
