Controller Authorization

[GMPX]

Tony I expect it will get the newer T87A too, it has been rolled out over every other 2017 model and the Duramax is probably the one GM would be most concerned about.

[GMC-2002-Dmax]

Well that sucks...... :(.

[GMPX]

We knew this day would come at some point though and I don't see it getting better, worse if anything.
VW cheating emissions, people driving Jeeps in to a ditch using a phone...now that is a wake up call for any vehicle manufacturer to increase security.

[S Phinney]

This is about government not manufacturer security. There are too many tree hugging liberals here is the USA.


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[GMPX]

Hard to know because the European cars have been like this for many years, most of those the ECM needs to be pulled apart to tune.

[S Phinney]

I would almost bet anything that we alter or customize our vehicles here more than anywhere. There is such a trend with the liberals here to save the world and anything that becomes part if their agenda seems to become too drive how people are suppose to live here. No way I can believe it all on GM for the changes. Regulation everywhere here! Hopefully it will change for the better in the upcoming years.


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[ScarabEpic22]

It can't be read, programming has a very nasty digital signature system in place. They've gone away from the traditional programming methods to something more like what Bosch do.


You will still be able to flash two controllers with the one VIN license, no change there. But the auth-code is an additional cost to the licenses, however as I mentioned above the T87A cannot be programmed at this stage so it isn't like you will need two Auth-Codes per vehicle.

Crap. Simply crap. With the digital signature, is it almost impossible to have a modified file flashed back in because the checksums/hashes wont match so the TCM will simply not accept the flash? I imagine the processing power required to actually generate new signatures that work with the factory one would be difficult.

[Chevy366]

We knew this day would come at some point though and I don't see it getting better, worse if anything.
VW cheating emissions, people driving Jeeps in to a ditch using a phone...now that is a wake up call for any vehicle manufacturer to increase security.

Sad, but true!

Hard to know because the European cars have been like this for many years, most of those the ECM needs to be pulled apart to tune.

Hmm

I would almost bet anything that we alter or customize our vehicles here more than anywhere. There is such a trend with the liberals here to save the world and anything that becomes part if their agenda seems to become too drive how people are suppose to live here. No way I can believe it all on GM for the changes. Regulation everywhere here! Hopefully it will change for the better in the upcoming years.


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There are some pretty bad-ass vehicles in Australia and New Zealand. They may have us beat.

[GMPX]

Crap. Simply crap. With the digital signature, is it almost impossible to have a modified file flashed back in because the checksums/hashes wont match so the TCM will simply not accept the flash? I imagine the processing power required to actually generate new signatures that work with the factory one would be difficult.

Correct and because it is not something that is checked when the trans is in normal running mode (only when being flashed) they can make it as complex as they want because if it takes 30 seconds to verify the digital signature so what.

Sad, but true!

And this came in to my head...

There are some pretty bad-ass vehicles in Australia and New Zealand. They may have us beat.

There used to be, in a years time our GM vehicles will only be Korean or Opel's. Probably great cars but not the RWD V8's Aussies tend to love.

Cheers,
Ross

[Snipesy]

So I'm confused here and know absolutely nothing about the actual flashing of the vehicle.

How are people getting the keys if it's such a tight encryption? I have no idea what format it uses, but it can't be anything serious if people are getting them in the span of a day. Or is it more complicated than that?