This was previously checked as part of the eap_sim_parse_attr()
processing, but it is easier to review the code if there is an
additional explicit check for confirming that the Reserved field is
present since the pos variable is advanced beyond it.
Signed-off-by: Jouni Malinen <j@w1.fi>
Reduce the amount of time keying material (MSK, EMSK, temporary private
data) remains in memory in EAP methods. This provides additional
protection should there be any issues that could expose process memory
to external observers.
Signed-off-by: Jouni Malinen <j@w1.fi>
The pos pointer is not used after this now nor in future plans, so no
need to increment the value. This remove a static analyzer warning about
dead increment.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes it easier for static analyzers to figure out which code paths
are possible within eap_sim_msg_finish() for EAP-SIM. This will
hopefully avoid some false warnings (CID 68110, CID 68113, CID 68114).
Signed-off-by: Jouni Malinen <j@w1.fi>
This allows the new external_sim=1 case to be used to perform UMTS
authentication step in EAP-AKA/AKA' peer process. Following control
interface event is used to request the operation:
CTRL-REQ-SIM-<network id>:UMTS-AUTH:<RAND>:<AUTN> needed for SSID <SSID>
Response from external processing is returned with
CTRL-RSP-SIM-<network id> UMTS-AUTH:<IK>:<CK>:<RES>
or
CTRL-RSP-SIM-<network id> UMTS-AUTS:<AUTS>
Signed-hostap: Jouni Malinen <j@w1.fi>
Use the anonymous_identity field to store EAP-SIM/AKA pseudonym identity
so that this can be maintained between EAP sessions (e.g., after
wpa_supplicant restart) even if fast re-authentication data was cleared.
Signed-hostap: Jouni Malinen <j@w1.fi>
There was a technical change between the last IETF draft version
(draft-arkko-eap-aka-kdf-10) and RFC 5448 in the leading characters
used in the username (i.e., use unique characters for EAP-AKA' instead
of reusing the EAP-AKA ones). This commit updates EAP-AKA' server and
peer implementations to use the leading characters based on the final
RFC.
Note: This will make EAP-AKA' not interoperate between the earlier
draft version and the new version.
Signed-hostap: Jouni Malinen <j@w1.fi>
intended-for: hostap-1
The pseudonym identity should use a realm in environments where a realm is
used. Thus, the realm of the permanent identity is added to the pseudonym
username sent by the server.
Signed-hostap: Simon Baatz <gmbnomis@gmail.com>
In addition, start ordering header file includes to be in more
consistent order: system header files, src/utils, src/*, same
directory as the *.c file.
This fixes an issue where two AKA'/Challenge messages are received when
resynchronizing SEQ#. Previously, this used to trigger an authentication
failure since the second Challenge message did not duplicate AT_KDF.
