If that log has anything to do with any reality, even alternate in somebody's head, the time stamps suggest indeed that this is done by reading the blocks out, the complete block-by-block CRC check should take a couple of seconds in total. Nevertheless, I find all too hard to believe.

As I said I'm confused about this. I dont' know if a block CRC can be done in a standardized way. If yes they could do this.

But I find the benefit of block CRC vs simple CVN check is very thin. If a tuner can fake the CVN he will be able to fake the block CRC as well.

Reading the blocks throught OBD won't work for all ECUs. Howerver it would be a killer option as no workaround would be possible then.

So there are 3 options :

-1 CVN check : easy to do but weak
-2 Blocks CRC : more difficult to implement but a bit stronger
-3 Read Blocks : straightforward, very stong but only work for a limited set of ECUs

is interesting as it seems that the ecu is in read/write mode. So it looks like they use option 3.

Another option would be to send the blocks to the ECU and then ask (how ?) the ECU to compare the bytes on it side. This would give similar timestamps. Realistic or not ?
 

I have a question regarding flash and boot mode (ME7) I understand that the EEPROM content is not updated at all when flashing in boot mode. Is it correct ? So there is a problem if CVN has changed right ?

Pretty sure someone made that up, or w/e.

They can only check with EOBD standard. Flashing algorithms are manufacturer-specific for every car, and they are not available for third parties either.
Remember, to initiate any checksum checking you need to have seed-key access to the ECU, and that's just not going to happen, it's not information the OEM's have to give out.
The amount of work to make a universal tool that speaks every vehicle specific protocol is unreal too. Just not going to happen, nor is it part of any standard.

Read the ME7 FR on how CVN is calculated and queried, it's all in there.

On any ECU to bypass this, you need to read the original CVN, store it in the binary, and when CVN calc request is sent instead of calculating it, just load RAM values with stored value.
Or you can patch Mode 9 request to answer fixed values instead of actual CVN. Mode 9 is the only thing there is in the ecu's that can be checked universally. Needs a huge database of all possible calibrations, but that is still doable vs. trying to get programming access to each ecu.

Waste of time if you ask me. It will be just worked around, because you are trusting the ECU to tell you something. And ECU is just running code inside it. Those that are implementing this legislation aren't too bright.

Also, all that 2014/45/EU says is that from Euro 6 on gasoline vehicles, they want to use EOBD readiness in place of gas analyzers. Nothing else.

CVN is implemented after 2005 MY IIRC.

Also they check readiness monitors with EOBD. Diesel has a readiness monitor for EGR, but not for DPF I think.
Once again, readiness monitors are something the ECU says - and what I've done in the past is replace the service function with my own, that just always says that everything is fine and dandy.

This is planned to start in France in May. This will be an european inspection. So most verification processes will be common for all EU countries. I think the OBD part will be shared in order to limit costs and to get a simpler relationship with manufacturers. Anyway each country can add its own verifications.

FFS.

Yeah, so you have no source.

The opposite. The crowd of people wanting to remove DPF/EGR and what not is always going to be large (in some countries this is national sport and people budget money for this before they even buy the car), for him it is a reason to charge more for the service claiming he can bypass the check but it needs his magic touch (and this magic for EOBD readiness is really simple, the average customer does not need to know that). And he can charge old customers for fixing their cars before they get "caught". Come to think of it, that's a genius plan

Of course, I don't know that particular person so it's a general remark rather than personal, but it does reflect things I have heard of in the "tuning scene".