def test_decode_with_dedicated_key(self):
data = bytes.fromhex(
"01011000112233445566778899AABBCCDDEEFF0000065F1F0400007E1F04B0")
apdu = xdlms.InitiateRequest(
proposed_conformance=xdlms.Conformance(
general_protection=False,
general_block_transfer=False,
delta_value_encoding=False,
attribute_0_supported_with_set=False,
priority_management_supported=True,
attribute_0_supported_with_get=True,
block_transfer_with_get_or_read=True,
block_transfer_with_set_or_write=True,
block_transfer_with_action=True,
multiple_references=True,
data_notification=False,
access=False,
get=True,
set=True,
selective_access=True,
event_notification=True,
action=True,
),
proposed_quality_of_service=0,
client_max_receive_pdu_size=1200,
proposed_dlms_version_number=6,
response_allowed=True,
dedicated_key=b'\x00\x11"3DUfw\x88\x99\xaa\xbb\xcc\xdd\xee\xff',
)
assert xdlms.InitiateRequest.from_bytes(data) == apdu
def test_parse_simple(self):
data = bytes.fromhex("01000000065F1F0400007E1F04B0")
ir = xdlms.InitiateRequest(
proposed_conformance=xdlms.Conformance(
general_protection=False,
general_block_transfer=False,
delta_value_encoding=False,
attribute_0_supported_with_set=False,
priority_management_supported=True,
attribute_0_supported_with_get=True,
block_transfer_with_get_or_read=True,
block_transfer_with_set_or_write=True,
block_transfer_with_action=True,
multiple_references=True,
data_notification=False,
access=False,
get=True,
set=True,
selective_access=True,
event_notification=True,
action=True,
),
proposed_quality_of_service=0,
client_max_receive_pdu_size=1200,
proposed_dlms_version_number=6,
response_allowed=True,
dedicated_key=None,
)
assert xdlms.InitiateRequest.from_bytes(data) == ir
def test_encode_simple(self):
data = bytes.fromhex("0800065F1F040000501F01F40007")
ir = xdlms.InitiateResponse(
negotiated_conformance=xdlms.Conformance(
general_protection=False,
general_block_transfer=False,
delta_value_encoding=False,
attribute_0_supported_with_set=False,
priority_management_supported=True,
attribute_0_supported_with_get=False,
block_transfer_with_get_or_read=True,
block_transfer_with_set_or_write=False,
block_transfer_with_action=False,
multiple_references=False,
data_notification=False,
access=False,
get=True,
set=True,
selective_access=True,
event_notification=True,
action=True,
),
server_max_receive_pdu_size=500,
negotiated_dlms_version_number=6,
negotiated_quality_of_service=0,
)
assert data == ir.to_bytes()
def aarq():
return acse.ApplicationAssociationRequest(
ciphered=False,
system_title=None,
public_cert=None,
authentication=None,
authentication_value=None,
user_information=acse.UserInformation(content=xdlms.InitiateRequest(
proposed_conformance=xdlms.Conformance(
general_protection=False,
general_block_transfer=False,
delta_value_encoding=False,
attribute_0_supported_with_set=False,
priority_management_supported=False,
attribute_0_supported_with_get=False,
block_transfer_with_get_or_read=True,
block_transfer_with_set_or_write=True,
block_transfer_with_action=True,
multiple_references=True,
data_notification=False,
access=False,
get=True,
set=True,
selective_access=True,
event_notification=False,
action=True,
),
proposed_quality_of_service=0,
client_max_receive_pdu_size=65535,
proposed_dlms_version_number=6,
response_allowed=True,
dedicated_key=None,
)),
)
def test_encrypt(self):
apdu = xdlms.InitiateRequest(
proposed_conformance=xdlms.Conformance(
general_protection=False,
general_block_transfer=False,
delta_value_encoding=False,
attribute_0_supported_with_set=False,
priority_management_supported=True,
attribute_0_supported_with_get=True,
block_transfer_with_get_or_read=True,
block_transfer_with_set_or_write=True,
block_transfer_with_action=True,
multiple_references=True,
data_notification=False,
access=False,
get=True,
set=True,
selective_access=True,
event_notification=True,
action=True,
),
proposed_quality_of_service=0,
client_max_receive_pdu_size=1200,
proposed_dlms_version_number=6,
response_allowed=True,
dedicated_key=b'\x00\x11"3DUfw\x88\x99\xaa\xbb\xcc\xdd\xee\xff',
)
encryption_key = bytes.fromhex("000102030405060708090A0B0C0D0E0F")
authentication_key = bytes.fromhex("D0D1D2D3D4D5D6D7D8D9DADBDCDDDEDF")
system_title = bytes.fromhex("4D4D4D0000BC614E")
security_control = security.SecurityControlField(
security_suite=0,
authenticated=True,
encrypted=True,
broadcast_key=False,
compressed=False,
)
invocation_counter = 19088743
ciphered_apdu = xdlms.GlobalCipherInitiateRequest(
security_control=security.SecurityControlField(
security_suite=0,
authenticated=True,
encrypted=True,
broadcast_key=False,
compressed=False,
),
invocation_counter=19088743,
ciphered_text=
b'\x80\x13\x02\xff\x8axt\x13=AL\xed%\xb4%4\xd2\x8d\xb0\x04w `k\x17[\xd5"\x11\xbehA\xdb M9\xeeo\xdb\x8e5hU',
)
cipher_text = security.encrypt(
security_control=security_control,
system_title=system_title,
key=encryption_key,
auth_key=authentication_key,
invocation_counter=invocation_counter,
plain_text=apdu.to_bytes(),
)
assert cipher_text == ciphered_apdu.ciphered_text