AW: Opel Navi 600 / 900 Europa Karte 2013
Now I see the differences between the 2 card. This is only 1 file, all others look the same. The name of the file is SDX_META.DAT.
I compared the two version of the file (contains XML) and here are differences.
First of all the timestamp of initialization and lifetime start:
My:
<RBCM_SIGNATURE> <META_INFO timestamp="2013-02-28T04:17:42"> <OPERATOR name="GM" />
<ID cid="" vin="" /> <LIFETIME start="2013-02-28T04:17:42" end="" />
Your:
<RBCM_SIGNATURE> <META_INFO timestamp="2013-03-15T07:24:19"> <OPERATOR name="GM" />
<ID cid="" vin="" /> <LIFETIME start="2013-03-15T07:24:19" end="" />
It would be great If you can tell me how and when this timestamp is generating and writing to the Card?
- In the factory : In this case the card doesn’t know the Nav Unit, in which it will work, so this way they aren’t linking together. If you see the second row, you can see that there is no CID or VIN number given.
- At Opel dealer: He must to initialize the card? How it makes it? Via PC or Laptop? When I try a new car at the Opel they said “The card isn’t in the demo car because it must be initializing first.”
- At the Unit: This way the navi’s software makes the initialization process and creates the timestamp (and the signatures).
But you write me that your card was never in the navi system, but it has a valid timestamp in the file.
Sorry about this but I get my car with the initialized SD card, don’t know how they make it.
I found only one signature that differences:
My:
<OPERATOR_SIGNATURE length="48">
0x09, 0xca, 0xc6, 0x2d, …
0x80, 0x3e, 0xa6, 0x85, …
</OPERATOR_SIGNATURE>
Your:
<OPERATOR_SIGNATURE length="48">
0x10, 0xd0, 0x07, 0x40, …
0xf3, 0x8c, 0x18, 0xb3, …
</OPERATOR_SIGNATURE>
I feel this is standard 40 bit length HASH5 algorithm based on the given file list, the timestamp and maybe the CID number.
I don’t know how HASH5 works, must look after.
Somebody must to reproduce the algorithm or change the card’s CID number to reproduce a copied version of this card…
Tom, Budapest, Hungary.