Skip to main content
Home
for DLMS smart meters
Open source solutions for DLMS smart metering

Main navigation

  • Home
  • Products
  • About us
  • Open Source
  • Community
  • Forum
  • Downloads
User account menu
  • Log in

Breadcrumb

  1. Home
  2. Forums
  3. Meaning of HLS Secret

Meaning of HLS secret

Forum Rules

Before commenting read Forum rules

Don't comment the topic if you have a new question.

You can create a new topic selecting correct category from Gurux Forum and then create a new topic selecting "New Topic" from the top left.

By zeus8497st , 24 February, 2023
Forums
General discussion

i would like to get your opinion about the meaning of the HLS secret parameter. Some says it's the session key generate by a key derivate function from a master key. other stipulate that is just the secret password (LLS) of the meter. what is the correct meaning? thanks in advance for your support.

Profile picture for user Kurumi

Kurumi

3 years 5 months ago

Hi, The client part counts…

Hi,

The client part counts HLS f(StoC) from the password and Server to Client (StoC) challenge that the server sends when the connection is established. In GMAC and ECDSA password is not used because the authentication key is used instead of the password.

The master key is only used when a new key is updated for the meter.

BR,
Mikko

zeus8497st

3 years 5 months ago

In reply to Hi, The client part counts… by Kurumi

Hi Kurumi, okay i figure out…

Hi Kurumi, okay i figure out but when you said a new key you mean a new authentication key set to the meter.

  • Create new account
  • Reset your password

Hire Us!

Latest Releases

  • Mon, 07/27/2026 - 12:37
    gurux.dlms.cpp 9.0.2607.2701
  • Thu, 07/23/2026 - 16:19
    gurux.dlms.java 4.0.96
  • Thu, 07/09/2026 - 14:34
    Gurux.DLMS.Python 1.0.201
  • Fri, 06/26/2026 - 16:32
    Gurux.Service 3.0.2606.2601
  • Wed, 06/24/2026 - 08:36
    Gurux.DLMS.Python 1.0.200

New forum topics

  • Possible memory leak in file dlms.c, getCompactArrayItem(), getCompactArrayItem2()
  • Official Gurux.DLMS.Client.Example.Net fails during High GMAC secure association (Invalid PDU), while Gurux Director connects successfully
  • gurux_dlms.GXDateTime.GXDateTime object Error in Python
  • T_APPL_DATA_LN_N1 subtest 3 fails on an LN-only server regardless of the response to a non-existing-object GET
  • Version mismatch between Gurux.DLMS 9.x and Gurux.Common/Gurux.Serial 8.x
More

Who's new

  • liha_2019
  • FiqJXzPfbTtORWoZ
  • qZgCuGshgQLxtN…
  • Georgegeowl
  • brsRKNujhfnXWm…
RSS feed
Privacy FAQ GXDN Issues Contact
Follow Gurux on Twitter Follow Gurux on Linkedin