US Association with guruxDLMSServer.c

By Sravanti, 9 May, 2025
Forums
Gurux.DLMS

Hi Kurumi,

Currently working on PC association using guruxDLMSserver.c with ESP32 using Arduino IDE .
With TCP communication we are able to download objects using GXDLMSDirector. Now we want to use US association.
Unable to assign authentication key and blockcipherkey in esp32 as dlms server.
What settings we need to do or add to get US association work.

Thank you

Kurumi

1 month 2 weeks ago

Hi,

You can set the block cipher and authentication keys like this:

Server.assingBlockCipherKey(&blockCipherKey.value);
Server.assingAuthenticationKey(&authenticationKey.value);

BR,
Mikko

Sravanti

1 month 1 week ago

Thank you, Kurumi, for the quick reply.
I have tried the lines which you have mentioned. Its giving error regarding value not a member.
I need to know what code modification I need to do for US association with security and authentication HIGH.

https://github.com/Gurux/GuruxDLMS.c/blob/master/GuruxDLMSServerExample…
with the above reference code able to download objects with PC association, with DLMServer in ESP32. The same way I need US association as well.
Facing issue with assigning authentication, security keys and assigning DLMS_AUTHENTICATION_HIGH.
Please let me know.

Thank you.

Sravanti

2 weeks 4 days ago

Hi kurumi,

I tried the example that you have specified, but unable to communicate using authentication and encryption enabling. Am I missing something?
I am using default keys and secret password.

Thankyou.