OMA netwpin example

Hello,
can anyone help generating the netwpin for sec=0.
if imsi= 21407 650123456
and is even in lenght,
where I have ot put the filler 0xf ?

would be something like:

{ 0x02, 0x01, 0x04, 0x00, 0x07, 0x06,0x05, 0x00, 0x09,0x05,0x02,0x00,0x06,0x05, 0x0f }

Any help?

If f.x. you have two number like "213 03" that's coded in GSM format with fillers like this:

213 03 -> 21 3x 03 -> 21 3F 03 -> 12 F3 30

But now your IMSI is even, so do you need any fillers ?

I haven't started on the network pin yet, just speculating.


regards,
f.

Hi Futhark,

Please try the network pin.

I have a 15 digits IMSI number, do I need to add 'F' as filler?

So far, I haven't been successful in using network pin.

Hello futhark,
exactly that is why i am a bit confussed.

In oma ProvBoot page 14, says:
If the IMSI consists of an even number of digits the filler 0xF MUST be inserted.

The question is where have to be inserted.

I want to use NETWPIN, for so I put SEC=0,
and calculates the MAC using SHA1.

Now the input keys are the IMSI.
If my phone is 21407 650123456

I am using as keys:
byte[] keyBytes = new byte[] { 0x32, 0x31, 0x34, 0x30, 0x37, 0x36, 0x35, 0x30,
0x31, 0x32, 0x33, 0x34, 0x35, 0x36 };


But this is not working, and do not know why.

thanks, any idea.

My guess would be that you insert a filler in the MCC/MNC part
of the IMSI. It also says that you need to GSM code the IMSI.

The IMSI 21407 650123456 becomes:
-> 21 4F 07 06 50 12 34 56
-> 12 F4 70 60 05 21 43 65

That's the input I would use.

Can you test it ?

regards,
f.

Hi,
I have tried that but it does not work.

thanks for your help.

ok -I know that you have figured it out by now,
But just for the records: The filler should be the last figure
if it is needed in the IMSI, so it would become the second to last figure in the key input. It is a bit confusing statement in the Nokia documents.

regards,
f.