This converts some of the PAE code to use a design that gets rid
unnecessary warnings from sparse and allows more thorough validation of
byte order operations.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The "Accepting Additional Mesh Peerings bit == 0" means the peer cannot
accept any more peers, so suppress attempt to open a connection to such
a peer.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
The AMPE element includes number of optional and variable length fields
and those cannot really be represented by a fixed struct
ieee80211_ampe_ie. Remove the optional fields from the struct and
build/parse these fields separately.
This is also adding support for IGTKdata that was completely missing
from the previous implementation. In addition, Key RSC for MGTK is now
filled in and used when configuring the RX MGTK for a peer.
Signed-off-by: Jouni Malinen <j@w1.fi>
This commit also introduces a new attribute MANDATORY_FREQUENCY_LIST
which aims for AP operation in a channel that ensures best concurrency
sessions.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This adds QCA_NL80211_VENDOR_SUBCMD_SET_WIFI_CONFIGURATION and
QCA_NL80211_VENDOR_SUBCMD_GET_WIFI_CONFIGURATION and the attributes used
with these commands.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Trigger an event when wpa_supplicant accepts an invitation to re-invoke
a persistent group. Previously wpa_supplicant entered group formation
without triggering any specific events and it could confuse clients,
especially when operating with a driver that does not support
concurrency between P2P and infrastructure connection.
Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Add FTM range request via RRM. The AP sends Radio measurement request
with FTM range request as a request for the receiving STA to send FTM
requests to the given list of APs. The neighbor report part of the
request is taken from the neighbor database.
The control interface command is:
REQ_RANGE <dst addr> <rand_int> <min_ap> <responder> [<responder>..]
dst addr: MAC address of an associated STA
rand_int: Randomization Interval (0..65535) in TUs
min_ap: Minimum AP Count (1..15); minimum number of requested FTM ranges
between the associated STA and the listed APs
responder: List of BSSIDs for neighboring APs for which a measurement
is requested
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Add a hostapd control interface command REQ_LCI to request LCI from an
associated station using radio measurement.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Save RM enabled capability element of an associating station if radio
measurement is supported in its capability field.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Process Neighbor Report Request frame and send Neighbor Report Response
frame based on the configured neighbor report data.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Extend the radio_measurements parameter to save all the supported
RRM capabilities as it's used in RM enabled capabilities element.
Make this parameter not directly configurable via config file (though,
keep the radio_measurements parameter for some time for backwards
compatibility). Instead, add a configuration option to enable neighbor
report via radio measurements. Other features can be added later as
well.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Add a function that parses SSID in text or hex format. In case of the
text format, the SSID is enclosed in double quotes. In case of the hex
format, the SSID must include only hex digits and not be enclosed in
double quotes. The input string may include other arguments after the
SSID.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
The hostapd "POLL_STA <addr>" control interface command can be used to
check whether an associated station ACKs a QoS Data frame. The received
ACK for such a frame is reported as an event message ("AP-STA-POLL-OK
<addr>").
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The new VENDOR_ELEM value 14 can now be used to add a vendor element
into Probe Request frames used by non-P2P active scans.
For example:
VENDOR_ELEM_ADD 14 dd05001122330a
and to clear that:
VENDOR_ELEM_REMOVE 14 *
Signed-off-by: Jouni Malinen <j@w1.fi>
This struct in the union is empty, but the design of using a zero-length
u8 array here is not fully compatible with C++ and can result in
undesired compiler warnings. This struct is not used anymore, so it can
be removed from the struct ieee80211_mgmt definition to complete the
changes started in commit d447cd596f
('Updates for stricter automatic memcpy bounds checking').
Signed-off-by: Jouni Malinen <j@w1.fi>
This reverts commit 4ca16b5fd7.
Configuration for this will be done using a previously assigned more
generic command. This new command
QCA_NL80211_VENDOR_SUBCMD_SET_TXRX_AGGREGATION has not been used in any
driver version and won't be used, so the assigned command id can be
freed for future use.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This gets rid of need to include linux/if_vlan.h and additional defines
in vlan_ioctl.c to avoid issues with missing definitions in libc
headers.
Signed-off-by: Jouni Malinen <j@w1.fi>
This is preparation for sharing a single implementation for ctrl_iface
functionality in wpa_supplicant and hostapd.
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Expose the functions wpas_get_bands() and wpas_freq_to_band() and the
enum wpa_radio_work_band, since they will be needed outside
wpa_supplicant.c.
Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
This makes hostapd track Supported Operating Classes information from
the associated STAs. The stored information is available through the STA
control interface command (supp_op_classes row) as a hexdump of the
Supported Operating Classes element starting from the Length field. This
information can be used as input to BSS transition management and
channel switching decisions.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This makes hostapd parse a received WNM Notification Request frame
subelements and if a WFA MBO cellular data capability subelement is
seen, update the cellular data capability for the STA.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Add the transition candidate list to BSS Transition Management Response
frame. The candidates preference is set using the regular wpa_supplicant
BSS selection logic. If the BSS transition request is rejected and
updated scan results are not available, the list is not added.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Add a function to derive phy type from frequency and bandwidth
as defined in IEEE Std 802.11ac-2013 Annex C (dot11PHYType).
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Add parsing of MBO IE in BSS Transition Management Request frames. If
the MBO IE includes the association retry delay attribute, do not try to
reconnect to the current BSS until the delay time is over.
If the MBO IE includes the cellular data connection preference attribute
or the transition rejection reason attribute, send a message to upper
layers with the data.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Add definitions for global operating classes. These definitions will be
used to construct supported operating classes information element.
The operating classes definitions used locally for P2P module will be
removed and included in the general operating classes definitions.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Add a helper function to find a certain IE inside IEs buffer by ID and
use this function in several places that implemented similar
functionality locally.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
This makes it easier to debug AP selection issues in case of a invalid
RSN element or use of customer cipher suites that are not supported by
wpa_supplicant.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
IEEE Std 802.11-2012 11.3.5.4 specifies the PMKID for SAE-derived keys
as:
L((commit-scalar + peer-commit-scalar) mod r, 0, 128)
This is already calculated in the SAE code when the PMK is derived, but
not saved anywhere. Later, when generating the PMKID for plink action
frames, the definition for PMKID from 11.6.1.3 is incorrectly used.
Correct this by saving the PMKID when the key is generated and use it
subsequently.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
This adds support for optional functionality to validate server
certificate chain in TLS-based EAP methods in an external program.
wpa_supplicant control interface is used to indicate when such
validation is needed and what the result of the external validation is.
This external validation can extend or replace the internal validation.
When ca_cert or ca_path parameter is set, the internal validation is
used. If these parameters are omitted, only the external validation is
used. It needs to be understood that leaving those parameters out will
disable most of the validation steps done with the TLS library and that
configuration is not really recommend.
By default, the external validation is not used. It can be enabled by
addingtls_ext_cert_check=1 into the network profile phase1 parameter.
When enabled, external validation is required through the CTRL-REQ/RSP
mechanism similarly to other EAP authentication parameters through the
control interface.
The request to perform external validation is indicated by the following
event:
CTRL-REQ-EXT_CERT_CHECK-<id>:External server certificate validation needed for SSID <ssid>
Before that event, the server certificate chain is provided with the
CTRL-EVENT-EAP-PEER-CERT events that include the cert=<hexdump>
parameter. depth=# indicates which certificate is in question (0 for the
server certificate, 1 for its issues, and so on).
The result of the external validation is provided with the following
command:
CTRL-RSP-EXT_CERT_CHECK-<id>:<good|bad>
It should be noted that this is currently enabled only for OpenSSL (and
BoringSSL/LibreSSL). Due to the constraints in the library API, the
validation result from external processing cannot be reported cleanly
with TLS alert. In other words, if the external validation reject the
server certificate chain, the pending TLS handshake is terminated
without sending more messages to the server.
Signed-off-by: Jouni Malinen <j@w1.fi>
wpa_insert_pmkid() did not support cases where the original RSN IE
included any PMKIDs. That case can happen when PTK rekeying through
4-way handshake is used after FT protocol run. Such a 4-way handshake
used to fail with wpa_supplicant being unable to build the EAPOL-Key msg
2/4.
Fix this by extending wpa_insert_pmkid() to support removal of the old
PMKIDs, if needed.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This makes it easier to interpret AP side debug log for a case where a
station specifies in unsupported management group cipher.
Signed-off-by: Jouni Malinen <j@w1.fi>
This allows offloaded roaming to inform user space of the change in IP
subnet post roaming. The device may have roamed to a network which is in
a different subnet which will result in IP connectivity loss. Indicating
the change in subnet enables the user space to refresh the IP address or
to perform IP subnet validation if unknown status is indicated.
The driver indication is reported with a new event from wpa_supplicant
in the following format:
CTRL-EVENT-SUBNET-STATUS-UPDATE status=<0/1/2>
where
0 = unknown
1 = IP subnet unchanged (can continue to use the old IP address)
2 = IP subnet changed (need to get a new IP address)
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The new attribute can be used with
QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_ROAM_AUTH to indicate whether the IP
subnet was detected to have changed when processing offloaded roam/key
management.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Using "STATUS" command triggers CTRL-EVENT-STATE-CHANGE and
CTRL-EVENT-CONNECTED (if connected to some AP) events. These events
cause problems in Android WifiStateMachine in Marshmallow. Due to these
events WifiStateMachine sometimes disconnects the OSU SSID connection,
while hs20-osu-client waits for IP address.
Signed-off-by: Somdas Bandyopadhyay <somdas.bandyopadhyay@intel.com>
This extends ieee80211_freq_to_channel_ext() with knowledge of the
operating classes for the 5 GHz channels 100..140.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Assign nl80211vendor commands QCA_NL80211_VENDOR_SUBCMD_OTA_TEST and
QCA_NL80211_VENDOR_SUBCMD_SET_TXPOWER_SCALE as well as corresponding
attributes.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Reorder terms in a way that no invalid pointers are generated with
pos+len operations. end-pos is always defined (with a valid pos pointer)
while pos+len could end up pointing beyond the end pointer which would
be undefined behavior.
Signed-off-by: Jouni Malinen <j@w1.fi>
Reorder terms in a way that no invalid pointers are generated with
pos+len operations. end-pos is always defined (with a valid pos pointer)
while pos+len could end up pointing beyond the end pointer which would
be undefined behavior.
Signed-off-by: Jouni Malinen <j@w1.fi>
Reorder terms in a way that no invalid pointers are generated with
pos+len operations. end-pos is always defined (with a valid pos pointer)
while pos+len could end up pointing beyond the end pointer which would
be undefined behavior.
Signed-off-by: Jouni Malinen <j@w1.fi>
If hostapd or wpa_supplicant is built from a git repository, add a
VERSION_STR postfix from the current git branch state. This is from "git
describe --dirty=+". VERSION_STR will thus look something like
"2.6-devel-hostap_2_5-132-g4363c0d+" for development builds from a
modified repository.
This behavior is enabled automatically if a build within git repository
is detected (based on ../.git existing). This can be disabled with
CONFIG_NO_GITVER=y in wpa_supplicant/.config and hostapd/.config.
Signed-off-by: Jouni Malinen <j@w1.fi>
In addition to the PTK length increasing, the length of the PMK was
increased (from 256 to 384 bits) for the 00-0f-ac:12 AKM. This part was
missing from the initial implementation and a fixed length (256-bit) PMK
was used for all AKMs.
Fix this by adding more complete support for variable length PMK and use
384 bits from MSK instead of 256 bits when using this AKM. This is not
backwards compatible with the earlier implementations.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Fix and extend the ieee80211_freq_to_channel_ext() function to deal
correctly with VHT operating classes (128, 129, 130).
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Extended channel switch provides an ability to switch between operating
classes and is required for P2P Devices by the P2P specification when
switching in 5 GHz.
When the operating class is provided for channel switch, the AP/P2P GO
will use eCSA IE in addition to the regular CSA IE both on 2.4 GHz and 5
GHz bands.
Transitions between different hw_modes are not supported.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Introduce definitions for QCA vendor specific subcommands
and attributes to support vendor scan request.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Split chown() call in wpa_ctrl_open() and wpa_ctrl_open2() to allow the
group id to be set even if the process does not have privileges to
change the owner. This is needed for modules that need to communicate
with wpa_supplicant since without the group change, wpa_supplicant may
not have privileges to send the response to a control interface command.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The new no_auth_if_seen_on=<ifname> parameter can now be used to
configure hostapd to reject authentication from a station that was seen
on another radio.
This can be used with enabled track_sta_max_num configuration on another
interface controlled by the same hostapd process to reject
authentication attempts from a station that has been detected to be
capable of operating on another band, e.g., to try to reduce likelihood
of the station selecting a 2.4 GHz BSS when the AP operates both a 2.4
GHz and 5 GHz BSS concurrently.
Note: Enabling this can cause connectivity issues and increase latency for
connecting with the AP.
Signed-off-by: Jouni Malinen <j@w1.fi>
This allows control interface monitors to get more detailed information
in cases where wpa_supplicant-based SME receives an Authentication frame
with non-zero status code.
Signed-off-by: Jouni Malinen <j@w1.fi>
This adds a new helper function wpa_ctrl_open2() that can be used
instead of wpa_ctrl_open() to override the default client socket
directory. Add optional -s<directory path> argument to hostapd_cli and
wpa_cli to allow the client socket directory to be specified.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
While the EAPOL-Key MIC derivation was already changed from SHA256 to
SHA384 for the Suite B 192-bit AKM, KDF had not been updated similarly.
Fix this by using HMAC-SHA384 instead of HMAC-SHA256 when deriving PTK
from PMK when using the Suite B 192-bit AKM.
Signed-off-by: Jouni Malinen <j@w1.fi>
This code path could not be hit with the RSNE generated by hostapd or
wpa_supplicant, but it is now possible to reach when using
own_ie_override test functionality. The RSNE and IE buffer length were
not updated correct in case wpa_insert_pmkid() had to add the RSN
Capabilities field.
Signed-off-by: Jouni Malinen <j@w1.fi>
Add ieee80211_freq_to_channel_ext() conversion function into
ieee802_11_common.c. This function converts freq to channel and
additionally computes operating class, based on provided HT and VHT
parameters.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
This adds parsing of QCA vendor specific elements and as the first such
element to be parsed, stores pointers to the preferred frequency list
element that can be used to enhance P2P channel negotiation behavior.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The new enum qca_vendor_element_id registry is used to manage
assignments of vendor specific elements using the QCA OUI 00:13:74. The
initial assignment is for the purpose for extending P2P functionality
for cases where the wpa_supplicant implementation is used by both ends
of an exchange.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When ACS is offloaded to device driver and the hw_mode parameter is set
to any, the current_mode structure is NULL which fails the ACS command.
Fix this by populating the ACS channel list with channels from all bands
when current_mode is NULL.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Add vendor command to pass SET setband command to the driver and read
the updated channel list from driver when this notification succeeds.
This allows the driver to update its internal channel lists based on
setband configuration.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
On PD Request/follow-on PD Request preparation set a feature capability
CPT value of PD context.
On PD Request processing use a request CPT and service advertisement
CPT priority list to select a feature capability CPT of PD Response.
On follow-on PD Request processing use a request CPT and a CPT priority
list in PD context to select a CPT value of follow on PD Response.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Add Coordination Transport Protocol parameter to P2P_SERVICE_ADD
asp command.
Extend p2ps_advertisement structure to contain CPT priorities
and a supported CPT bitmask.
The format of the new parameter:
cpt=<cpt>[:<cpt>]
where <cpt> is a name of the Coordination Protocol Transport.
This implementation supports two CPT names: UDP and MAC.
The order of specified CPTs defines their priorities where
the first one has the highest priority.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Introduce definitions for QCA vendor specific subcommands and attributes
to support multiport concurrency.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
These are confusing when the style used with the couple of FST IE checks
differs from the rest of hostapd/wpa_supplicant implementation.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Fast Session Transfer (FST) is the transfer of a session from a channel
to another channel in a different frequency band. The term "session"
refers to non-physical layer state information kept by a pair of
stations (STAs) that communicate directly (i.e., excludes forwarding).
The FST is implemented in accordance with IEEE Std 802.11ad-2012.
Definitions
* FST interface - an interface for which FST functionality is enabled
* FST group - a bunch of FST interfaces representing single
multi-band STA
* FST peer - a multi-band capable STA connected
* FST module - multi-band operation functionality implemented in
accordance with IEEE Std 802.11ad-2012 (see 10.32
Multi-band operation) as a part of hostapd/wpa_supplicant
* FST manager - an external application that implements custom FST
related logic, using the FST module's interfaces
accessible via CLI or D-Bus
This commit introduces only the FST module. Integration of the FST
module into the hostapd/wpa_supplicant and corresponding CLI/D-Bus
interfaces and FST related tests are covered in separate commits.
FST manager application is out of scope of these commits.
As FST aggregates a few interfaces into FST group, the FST module uses
global CLI for both commands and notifications. It also exposes
alternative non-interface based D-Bus subtree for this purposes.
Configuration and Initialization
* FST functionality can enabled by compilation flag (CONFIG_FST)
* hostapd/wpa_supplicant controlling multiple interfaces are used for
FST
* once enabled by compilation, the FST can be enabled for specific
interfaces in the configuration files
* FST interfaces are aggregated in FST groups (fst_group_id config file
entry), where each FST group:
- represents one multi-band device
- should have two or more FST interfaces in it
* priority (fst_priority config file entry) must be configured for each
FST interface. FST interface with higher priority is the interface FST
will always try to switch to. Thus, for example, for the maximal
throughput, it should be the fastest FST interface in the FST setup.
* default Link Loss Timeout (LLT) value can be configured for each FST
interface (fst_llt config file entry). It represents LLT to be used
by FST when this interface is active.
* FST interfaces advertise the Multi-band capability by including the
Multi-band element in the corresponding frames
FST CLI commands:
* fst list_groups - list FST groups configured.
* fst list_ifaces - list FST interfaces which belong to specific group
* fst iface_peers - list Multi-Band STAs connected to specific interface
* fst list_sessions - list existing FST sessions
* fst session_get - get FST session info
* fst session_add - create FST session object
* fst session_set - set FST session parameters (old_iface, new_iface,
peer_addr, llt)
* fst session_initiate - initiate FST setup
* fst session_respond - respond to FST setup establishemnt attempt by
counterpart
* fst session_transfer - initiate FST switch
* fst session_teardown - tear down FST Setup but leave the session object
for reuse
* fst session_remove - remove FST session object
FST CLI notifications:
* FST-EVENT-PEER - peer state changed (CONNECT/DISCONNECT)
* FST-EVENT-SESSION - FST session level notification with following
sub-events:
- EVENT_FST_SESSION_STATE - FST session state changed
- EVENT_FST_ESTABLISHED - previously initiated FST session became
established
- EVENT_FST_SETUP - new FST session object created due to FST session
negotiation attempt by counterpart
All the FST CLI commands and notifications are also implemented on D-Bus
for wpa_supplicant.
IEEE 802.11 standard compliance
FST module implements FST setup statemachine in compliance with IEEE
802.11ad (P802.11-REVmc/D3.3), as it described in 10.32 Multi-band
operation (see also Figure 10-34 - States of the FST setup protocol).
Thus, for example, the FST module initiates FST switch automatically
when FST setup becomes established with LLT=0 in accordance with
10.32.2.2 Transitioning between states.
At the moment, FST module only supports non-transparent STA-based FST
(see 10.32.1 General).
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The FT-specific check for valid group cipher in wpa_ft_gen_req_ies() was
not up-to-date with the current list of supported ciphers. Fix this by
using a generic function to determine validity of the cipher. In
practice, this adds support for using CCMP-256 and GCMP-256 as the group
cipher with FT.
Signed-off-by: Jouni Malinen <j@w1.fi>
There is no need to have separate return statements for these corner
cases that are unlikely to be hit in practice.
Signed-off-by: Jouni Malinen <j@w1.fi>
The cwmin/cwmax parameters were limited more than is needed. Allow the
full range (0..15 for wmm_ac_??_{cwmin,cwmax} and 1..32767 for
tx_queue_data?_{cwmin,cwmax}) to be used.
Signed-off-by: Jouni Malinen <j@w1.fi>
The current P802.11 description of SAE uses "1 < element < p" as the
required range. However, this is not correct and does not match the
Dragonfly description of "1 < element < p-1". SAE definition will need
to change here. Update the implementation to reject p-1 based on the
correct rule here.
Signed-off-by: Jouni Malinen <j@w1.fi>
IEEE Std 802.11-2012 description of SAE does not require this, i.e., it
describes the requirement as 0 < scalar < r for processing the Commit
message. However, this is not correct and will be changes to 1 < scalar
< r to match the Dragonfly description so that a trivial secret case
will be avoided explicitly.
This is not much of an issue for the locally generated commit-scalar
since it would be very unlikely to get the value of 1. For Commit
message processing, a peer with knowledge of the password could
potentially force the exchange to expose key material without this
check.
Signed-off-by: Jouni Malinen <j@w1.fi>
This provides more information to upper layer programs on what happens
with connection attempts in cases where the enabled networks are not
found in scan results.
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
If PWE is discovered before the minimum number of loops (k) is reached,
the extra iterations use a random "password" to further obfuscate the
cost of discovering PWE.
Signed-off-by: Jouni Malinen <j@w1.fi>
This replaces the earlier IEEE Std 802.11-2012 algorithm with the design
from P802.11-REVmc/D4.0. Things brings in a blinding technique for
determining whether the pwd-seed results in a suitable PWE value.
Signed-off-by: Jouni Malinen <j@w1.fi>
draft-irtf-cfrg-dragonfly recommends implementation to set the security
parameter, k, to a value of at least 40. This will make PWE generation
take significantly more resources, but makes it more likely to hide
timing differences due to different number of loops needed to find a
suitable PWE.
Signed-off-by: Jouni Malinen <j@w1.fi>
