For some reason, snprintf() was not seen as sufficient to remove
potentially tainted string from fgets() before passing this to rename().
This does not make much sense, but anyway, try to get rid of the warning
by using a separate buffer for the internally written file names.
(CID 72690)
Signed-off-by: Jouni Malinen <j@w1.fi>
Some USIM use shorter RES length than the 64-bit default from Milenage.
Such cases did not interoperate with the hlr_auc_gw implementation. Make
it possible to configure the RES length 4..8 octets, i.e., 32 to 64
bits) to support such USIM.
Signed-off-by: Jouni Malinen <j@w1.fi>
This can be used instead of SIM-REQ-AUTH to derive Kc and SRES values
from a previously assigned set of RAND values.
Signed-hostap: Jouni Malinen <j@w1.fi>
This allows hlr_auc_gw to be used to run a single operation without
having to use it as a server. This can be useful, e.g., for generating
GSM authentication triplets for external programs. For example:
./hlr_auc_gw -m hlr_auc_gw.milenage_db "SIM-REQ-AUTH 232010000000000"
Signed-hostap: Jouni Malinen <j@w1.fi>
The notes about using only fixed GSM authentication triplets were not
really up-to-date with the implementation. Milenage and GSM-Milenage
were available for EAP-SIM, EAP-AKA, and EAP-AKA'.
Signed-hostap: Jouni Malinen <j@w1.fi>
An SQLite database can now be used to manage the Milenage information
instead of a text file. The new hlr_auc_gw.txt document describes how
this is configured and used.
Signed-hostap: Jouni Malinen <j@w1.fi>
Change the SQN generation mechanism to use not time-based Profile 2
as described in 3GPP TS 33.102 Annex C.3.2. The previous implementation
used void IND (i.e.., all of SQN was SEQ1). The new default uses 5 bits
of SQN as IND. The length of IND can be configured on the command line
with the new -i<IND len in bits> parameter. -i0 would make hlr_auc_gw
behave in the same way as the previous implementation.
Signed-hostap: Jouni Malinen <j@w1.fi>
If the new command line argument -u is used, hlr_auc_gw will update
the Milenage file SQN numbers when exiting based on what was the last
SQN used during the process runtime.
Signed-hostap: Jouni Malinen <j@w1.fi>
This commit adds a new wrapper, random_get_bytes(), that is currently
defined to use os_get_random() as is. The places using
random_get_bytes() depend on the returned value being strong random
number, i.e., something that is infeasible for external device to
figure out. These values are used either directly as a key or as
nonces/challenges that are used as input for key derivation or
authentication.
The remaining direct uses of os_get_random() do not need as strong
random numbers to function correctly.
This is a separate program and is used mainly with hostapd, so it is
better to move this into the hostapd subdirectory now that Milenage
code has already been moved into src/crypto. Milenage was the only
generic component in hlr_auc_gw.
Jouni Malinen
Ben Greear