Re: Seed & Key KWP2000 at VDO ECUs

Does nobody has an idea?

I know that Keyword FB is used. What does this mean?
These are not the timing parameters of KWP protocol.

--- In opendiag@yahoogroups.com, "carstenffm" <cb-ffm@w...> wrote:
> The ECU is Central Electonic, it works as gateway to CAN for the
> dashboard which has no own k-line.
>
> The Key's last Byte even i read in Mercedes-Benz specification.
There
> are also descrbed the answer codes.
> 35 is unvalid key. After Receiption of the answer the next answer
is
> 36 what means to power off for testing again.
>
> --- In opendiag@yahoogroups.com, "Marcus Wu" <riptide@d...> wrote:
> > How did you learn of the key's last byte always being even?
> >
> > - Marcus Wu
> > riptide@d...
> >
> > >
> > >
> > >
> > >
> > > Does anybody knows something about key calculation of VDO ECUs,
> e.g.
> > > dashboard?
> > >
> > > I send Command request key
> > > ECU delivers two Bytes &quot;Seed&quot; last Bit is always odd
> > > unknown calculation on Seed delivers the Key, last Bit is
always
> even
> > > I send Key Bytes and receiver invalid key message because of the
> > > unknown calculation
> > >
> > > (2s complement does not work)
> > >
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Received on Sat Jul 26 02:03:56 2003