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DLMS_ERROR_CODE_INVALID_DECIPHERING_ERROR

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By MetersGuru , 26 January, 2023
Forums
Gurux.DLMS

Hello,

We are trying to establish a secured connection with security suite 1 and we filled the "Secured Connections" window with the same parameters:
Security : authenticationEncryption
System Title: 41 42 43 44 45 46 47 48
Block cipher key: 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
Authentication key: D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF

The connection is not working for us, I have a DLMS_ERROR_CODE_INVALID_DECIPHERING_ERROR for the "cip_decrypt" function inside the "apdu_parseUserInformation" function.

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Kurumi

3 years 5 months ago

Hi, You didn't tell me what…

Hi,

You didn't tell me what programming language you are using, but the basic idea is the same for all the programming languages. The ciphering settings must be the same with the client and the meter.

Make sure that your block cipher and authentication keys are the same as the meter is using.

BR,
Mikko

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