request for a simple set of instructions for EAP-SIM

Jouni Malinen jkmalinen at
Thu Feb 4 10:57:28 CET 2016

On Thu, Feb 4, 2016 at 4:58 AM, Arran Cudbard-Bell
<a.cudbardb at> wrote:
> Understand that no other project provides a free EAP-SIM implementation.  Radiator even charges extra for the license.  That's because it's only useful to a) telcos, b) students.  If you're working for a) then consider buying support, or sponsoring development of the documentation around EAP-SIM. If you're b) RTFS/RTFC :).

hostapd includes a free EAP-SIM, EAP-AKA, and EAP-AKA' server
implementation and an example program for implementing the HLR/AuC
gateway with the example case using standard GSM-Milenage and Milenage
algorithms that can be used for authentication with SIM and USIM cards
(as long as the secret key is known)..

That said, no such implementation is going to help with the use case
that was described in this email thread. Being able to use EAP-SIM to
authenticate some random mobile devices with their SIM/USIM cards from
random operators is going to work without significant co-operation
with all such operators.. So the practical answer to the question of
how to get EAP-SIM working with iPad devices that have SIM/USIM from
external providers is: That's not going to work.

- Jouni

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