Hi guys,
i'm still testing the eap-sim authentication and lately i got acceptable
results using
a simple flat file containing the triplets of specific SIM cards. Next step
will be to
enable the external radius server to use the sysmoBTS database hlr.sqlite3, so
the
OpenBSC users (Users using the OpenBSC-GSM Network) can automatically access
to the internet.
i just want to ask if there are any limitations with the sysmocom SIM cards?
In fact, i noticed that by using the sysmocom sim cards, the eap-sim
authentication
failed when the RAND values strong randomly chosen were, e.g
046DBA898016454aB3920C58180DA2F5 or e177842fe16c47de84784be1b4141c27.
But when i chose a RAND like this 10101010101010101010101010101010,
0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F or 00000000000000000000000000000000,
the authentication succeeded.
By using an other sim (not from sysmocom) with the same strong and weak RAND
values the authentication always succeeded.
Why does the authentication succeed buy using sysmocom sim card with weak RAND
(10101010101010101010101010101010) and fail by using strong RAND values
(e177842fe16c47de84784be1b4141c27) ?
best regards
Yann
