ZenZefi Certificates 11.11.2024

[Ossion]

ZenZefi certificate After-Sales STANDARD is valid until 11.11.2024

 

[Handed3219]

Is there a new certificate, this one is almost expired?

 

[R00TR0w]

All published certificates for import P12 were made for an old version of ZenZefi before 12.2023, how long they will be available is unknown.

 

[Handed3219]

I tested on a laptop without internet access to see how Xentry handled certificate validation based on the system time. I set up a local NTP server on the laptop and set its date to a value in the past. With this configuration, the Xentry license was recognized as valid and the test mode in Xentry functioned as expected.

However, when attempting to connect to a modern Mercedes-Benz vehicle, the certificate was marked as invalid. This appears to be because the vehicle uses its own internal clock, which reflects the current time. Xentry reads this time from the vehicle and uses it to validate the certificate, resulting in an expired certificate status.

The default system menu does not allow the date on the vehicle to be manually changed, so I am considering using DTS to adjust the vehicle date to match the laptop's past date, which would allow both components to match the same date and allow the certificate to be recognized as valid.

 

[R00TR0w]

Before you do something that has nothing to do with you, maybe you should ask me.
Even if you change the car time, an expired certificate will not be accepted.

 

[mbastucoding]

As far as I understand, the ECU has an internal counter, that is, as soon as the factory configuration is entered, it starts counting (the date is set) and Xentry compares the PC date and the ECU date, otherwise it is the same invalid certificate.