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Push Parsing issue

By Remith , 18 January, 2024
Forums
Gurux DLMS for Java

Dear Gurux Team,
We are facing issue while parsing push from the same meter manufacturer with different meter versions using Java Library. But using GXDLMSDirector we are able to parse both packets.

Security - Encryption
SytemTitle - 11111111
Block Chyper key - 2222222222222222

Old Meter Firmware (Able to parse with both Java and GXDLMSDirector)
00 01 00 01 00 40 00 5C DB 08 48 50 4C 00 01 33 35 D5 82 00 4F 20 00 00 00 3C 08 CF C5 47 FA 8A 4F 96 5A 48 D1 E7 CC 8F 19 6C 58 18 FA B2 7F EF 30 FB 99 6C 9A A0 DC 40 C5 F7 DA F8 83 00 75 A2 77 E4 F8 01 0D E2 4E 2F 06 B8 96 20 E1 53 F6 3D 54 4C 57 90 00 07 F3 D6 A9 08 27 5D EE A1 E0 AA 0C A6 50 61

New Meter Firmware (Unable to parse with java. But able to parse with GXDLMSDirector)
00 01 00 01 00 40 00 6D DB 08 48 50 4C 00 00 35 49 8A 82 00 60 30 00 00 00 00 07 B5 C1 ED F9 38 00 91 AA B1 96 E6 CB CC CF 82 7D 40 BE E2 AF 9B 92 CA 52 44 D5 B8 D4 B7 EB 53 69 F5 58 B6 6F E0 38 F4 27 47 BF DD C8 BD DD F0 D4 B1 57 91 AD 6F 35 DE 84 80 33 90 C7 36 FE 67 EC 21 8B 0C 2E A3 E9 20 C7 EE 2D 5B 58 C9 9B 1A 9F 71 C4 2F 7A E3 79 D0 62 C5 F8

Getting : Invalid Tag

Kindly help us to fix or identifythe issue.(If its packet issue we can inform the meter manufactuerer)

Thanks..

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Kurumi

2 years 4 months ago

Hi, Old data was sent using…

Hi,

Old data was sent using encryption only. The new data is sent using encryption and authentication. You need to set the authentication key so data can be parsed.

client.setAuthenticationKey("");

BR,
Mikko

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