Add new device- (ALK) Actislink, Poland (0x58b), type: Water meter (0x07) ver: 0x04

[rudy2k]

Type of request

New device support

Meter description

(ALK) Actislink, Poland (0x58b), type: Water meter (0x07) ver: 0x04

Logged telegrams from meter in decrypted format

pi@smartHome:~/wmbusmeters $ wmbusmeters --logtelegrams rtlwmbus[00000001]:t1 alk auto 02581059 NOKEY
Started config rtlwmbus[00000001] listening on t1
(meter) alk: meter detection could not find driver for id: 02581059 mfct: (ALK) Actislink, Poland (0x58b) type: Water meter (0x07) ver: 0x04
(meter) please consider opening an issue at https://github.com/wmbusmeters/wmbusmeters/
(meter) to add support for this unknown mfct,media,version combination
telegram=|2E468B055910580204077A2A005102_0E170250205892633589DF1323CAF936D07EE7B34A2B1B518F68678184359FDE|+37
alk     02581059        2024-04-19 14:41:32
telegram=|2E468B055910580204077A2B005102_F30BF8ADF4E82A33EA41EBA1B078D5E71582DDD344B1086033025CABA1480A2C|+93
alk     02581059        2024-04-19 14:42:28
telegram=|2E468B055910580204077A2C005102_8FCA9DAB63327041F3E5ECF3E4CAE1321107282DD5B3BFE62AB9DDD513D673B0|+148
alk     02581059        2024-04-19 14:43:23
telegram=|2E468B055910580204077A2D005102_AD4EBCFCA3A3218510284B53A8E6EA0E06A1899E065768CE6159DC37E23E863E|+204
alk     02581059        2024-04-19 14:44:19
telegram=|2E468B055910580204077A2E005102_7C21BEC0486C562A0B2CEC73282CB64E0CB424402F32D7BE0CC9E1530FA8A82D|+259
alk     02581059        2024-04-19 14:45:14
telegram=|2E468B055910580204077A2F005102_9E999E4A63ABE8ABCD4762E5FA3C56F13D476FAF7992FC02BC695B620DEC10EC|+315
alk     02581059        2024-04-19 14:46:10

[rudy2k]

It appears that the data inside the telegram is AES-128 encrypted. According to the OMS standard, the telegram fits into an SND-NR (wM-Bus) frame. The first 15 unencrypted bytes were successfully matched. I'm trying to decipher the rest, but so far no luck. I contacted Actislink and WaterGroup, which deal with these modules, but I have not received a response.

telegram=|2E468B057210030204077A79005102_A170B157175CAB6CBED5102F32BE2BAAA35F7538F36D7A38D6B7C35F8F57EA3B|+2428

alk     02031072        2024-04-22 08:31:06

Water meter showed: 128,597m3 but idk it is same as in telegram.

0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37	38	39	40	41	42	43	44	45	46
L-Field	C-Field	M-Field	M-Field	A-Field	A-Field	A-Field	A-Field	A-Field	A-Field	CI-Field	Acces No.	Status	Config	Config	AES-Verify	AES-Verify
Bytes (46)	C-field	Manu(2/2)	Manu(2/1)	ID4/4	ID3/4	ID2/4	ID1/4	Ver.	Type	ShortHeader	Acces No.	ErrCode	NNNNCCRHb	BASMMMMMb	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED	ENCODED
2E	46	8B	05	72	10	03	02	04	07	7A	79	00	51	02	A1	70	B1	57	17	5C	AB	6C	BE	D5	10	2F	32	BE	2B	AA	A3	5F	75	38	F3	6D	7A	38	D6	B7	C3	5F	8F	57	EA	3B