Changing server address

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By kristupas , 11 February, 2022
Forums
Gurux.DLMS

Hello,

I have few questions:

1) Is it possible to change meter's server address using gurux cpp library?
2) How does 5-pass authentication works? I am reading Shenzhen CLOU electronics meter documentation and they state that they use HLS-5 pass authentication with challenge mechanism. Is that GMAC authentication? If so, what kind of data do we need to know in order to connect to establish secured connection. Authentication, blockCipherKeys?

Kurumi

4 years 7 months ago

Hi,

1. It depends on the meter and communication channel. If you are using HDLC you can try changing the Device address.
http://www.gurux.fi/Gurux.DLMS.Objects.GXDLMSIecHdlcSetup

2. HLS-5 is using GMAC. You need to know authentication and block cipher keys to establish the connection.

BR,
Mikko

Kurumi

4 years 7 months ago

Hi,

Yes, The manufacturer is the only one who knows those keys.

BR,
Mikko