[srslte-users] Cellular device as UE.

[Charlie Smurthwaite]

You can't extract keys from a SIM. You need to buy a SIM that comes with the keys (usually by email). You can also potentially buy a programmable SIM and program in your own keys. You can't do any of this with a commercial SIM card.

There are several suppliers who can provide such SIMs, including these that I am aware of:

http://shop.sysmocom.de/products/sysmoISIM-SJA2
https://open-cells.com/index.php/sim-cards/

As for roaming, I don't know the details of how this works, but my assumption is that providers share the keys with each other as part of a roaming agreement. You definitely can't use a SIM without knowing its private key.

Charlie






On Tuesday, July 27, 2021, 3:23:43 PM GMT+1, Nadav Hashimshony <nadavh at gmail.com> wrote: 





Thanks Charlie 

Can I extract the keys from the sim?
And another question, how does other cellular currieries know my keys? When I travel abroad for example.. 

Sent from my iPhone

> On 27 Jul 2021, at 16:05, Charlie Smurthwaite <netmaster10000 at yahoo.com> wrote:
> 
> Hi Nadav,
> 
> Do you have a SIM card for which you know the encryption keys? If so, you need to configure these keys into the srsepc subscriber database, and then the phone should just work. If you don't have a SIM, you will need to buy one. Others here should be able to recommend suppliers.
> 
> Charlie
> 
> 
> 
> 
> 
> 
> On Tuesday, July 27, 2021, 10:18:57 AM GMT+1, Nadav Hashimshony <nadavh at gmail.com> wrote: 
> 
> 
> 
> 
> 
> Hi,
> 
> After struggling with the software setup and help from guys here, I finally managed to build and run 'srsepc' and 'srsenb' on Ubuntu 20.04 and BladeRF.
> 
> my 'srsepc' and 'srsenb' are running and I see expected output, like in the 'Getting Started' documentation.
> 
> my question is how can i force my phone (iphone XR and an old android device) to connect to my network? is it even possible? Am I missing something?
> 
> Attached is the output i have so far from srsepc and srsenb.
> 
> Thanks,
> Nadav.
> 
> 
> 
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