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hostapd/tests/hwsim/test_ocv.py

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tests: OCI validation in the 4-way and group key handshakes (OCV) Perform detailed tests with OCV enabled, for both the 4-way and group key handshakes. These tests include establishing a working connection with OCV enabled, assuring that a STA without OCV enabled can still connect to a STA with OCV enabled (and vice versa), verifying that invalid OCI elements get silently ignored, verifying that missing OCI elements are reported, and so on. Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@cs.kuleuven.be>
2018-08-06 21:46:38 +02:00
# WPA2-Personal OCV tests
# Copyright (c) 2018, Mathy Vanhoef
#
# This software may be distributed under the terms of the BSD license.
# See README for more details
from remotehost import remote_compatible
import binascii, struct
import logging, time
logger = logging.getLogger()
import hostapd
from wpasupplicant import WpaSupplicant
import hwsim_utils
from utils import HwsimSkip
from test_ap_ht import set_world_reg
from test_ap_psk import parse_eapol, build_eapol, pmk_to_ptk, eapol_key_mic, recv_eapol, send_eapol, reply_eapol, hapd_connected, build_eapol_key_3_4, aes_wrap, pad_key_data
#TODO: Refuse setting up AP with OCV but without MFP support
#TODO: Refuse to connect to AP that advertises OCV but not MFP
def make_ocikde(op_class, channel, seg1_idx):
WLAN_EID_VENDOR_SPECIFIC = 221
RSN_KEY_DATA_OCI = "\x00\x0f\xac\x0d"
data = RSN_KEY_DATA_OCI + struct.pack("<BBB", op_class, channel, seg1_idx)
ocikde = struct.pack("<BB", WLAN_EID_VENDOR_SPECIFIC, len(data)) + data
return ocikde
def ocv_setup_ap(apdev, params):
ssid = "test-wpa2-ocv"
passphrase = "qwertyuiop"
params.update(hostapd.wpa2_params(ssid=ssid, passphrase=passphrase))
try:
hapd = hostapd.add_ap(apdev, params)
except Exception, e:
if "Failed to set hostapd parameter ocv" in str(e):
raise HwsimSkip("OCV not supported")
raise
return hapd, ssid, passphrase
def build_eapol_key_1_2(kck, key_data, replay_counter=3, key_info=0x1382,
extra_len=0, descr_type=2, key_len=16):
msg = {}
msg['version'] = 2
msg['type'] = 3
msg['length'] = 95 + len(key_data) + extra_len
msg['descr_type'] = descr_type
msg['rsn_key_info'] = key_info
msg['rsn_key_len'] = key_len
msg['rsn_replay_counter'] = struct.pack('>Q', replay_counter)
msg['rsn_key_nonce'] = binascii.unhexlify('0000000000000000000000000000000000000000000000000000000000000000')
msg['rsn_key_iv'] = binascii.unhexlify('00000000000000000000000000000000')
msg['rsn_key_rsc'] = binascii.unhexlify('0000000000000000')
msg['rsn_key_id'] = binascii.unhexlify('0000000000000000')
msg['rsn_key_data_len'] = len(key_data)
msg['rsn_key_data'] = key_data
eapol_key_mic(kck, msg)
return msg
def build_eapol_key_2_2(kck, key_data, replay_counter=3, key_info=0x0302,
extra_len=0, descr_type=2, key_len=16):
return build_eapol_key_1_2(kck, key_data, replay_counter, key_info,
extra_len, descr_type, key_len)
@remote_compatible
def test_wpa2_ocv(dev, apdev):
"""OCV on 2.4 GHz"""
params = { "channel": "1",
"ieee80211w": "2",
"ocv": "1" }
hapd, ssid, passphrase = ocv_setup_ap(apdev[0], params)
for ocv in range(2):
dev[0].connect(ssid, psk=passphrase, scan_freq="2412", ocv=str(ocv),
ieee80211w="1")
dev[0].request("REMOVE_NETWORK all")
dev[0].wait_disconnected()
@remote_compatible
def test_wpa2_ocv_5ghz(dev, apdev):
"""OCV on 5 GHz"""
try:
run_wpa2_ocv_5ghz(dev, apdev)
finally:
set_world_reg(apdev[0], apdev[1], dev[0])
dev[0].flush_scan_cache()
def run_wpa2_ocv_5ghz(dev, apdev):
params = { "hw_mode": "a",
"channel": "40",
"ieee80211w": "2",
"country_code": "US",
"ocv": "1" }
hapd, ssid, passphrase = ocv_setup_ap(apdev[0], params)
for ocv in range(2):
dev[0].connect(ssid, psk=passphrase, scan_freq="5200", ocv=str(ocv),
ieee80211w="1")
dev[0].request("REMOVE_NETWORK all")
dev[0].wait_disconnected()
@remote_compatible
def test_wpa2_ocv_ht20(dev, apdev):
"""OCV with HT20 channel"""
params = { "channel": "6",
"ieee80211n": "1",
"ieee80211w": "1",
"ocv": "1" }
hapd, ssid, passphrase = ocv_setup_ap(apdev[0], params)
for ocv in range(2):
dev[0].connect(ssid, psk=passphrase, scan_freq="2437", ocv=str(ocv),
ieee80211w="1", disable_ht="1")
dev[1].connect(ssid, psk=passphrase, scan_freq="2437", ocv=str(ocv),
ieee80211w="1")
dev[0].request("REMOVE_NETWORK all")
dev[1].request("REMOVE_NETWORK all")
dev[0].wait_disconnected()
dev[1].wait_disconnected()
@remote_compatible
def test_wpa2_ocv_ht40(dev, apdev):
"""OCV with HT40 channel"""
try:
run_wpa2_ocv_ht40(dev, apdev)
finally:
set_world_reg(apdev[0], apdev[1], dev[0])
dev[0].flush_scan_cache()
dev[1].flush_scan_cache()
def run_wpa2_ocv_ht40(dev, apdev):
for channel, capab, freq, mode in [( "6", "[HT40-]", "2437", "g"),
( "6", "[HT40+]", "2437", "g"),
("40", "[HT40-]", "5200", "a"),
("36", "[HT40+]", "5180", "a")]:
params = { "hw_mode": mode,
"channel": channel,
"country_code": "US",
"ieee80211n": "1",
"ht_capab": capab,
"ieee80211w": "1",
"ocv": "1" }
hapd, ssid, passphrase = ocv_setup_ap(apdev[0], params)
dev[0].flush_scan_cache()
dev[1].flush_scan_cache()
for ocv in range(2):
dev[0].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1", disable_ht="1")
dev[1].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1")
dev[0].request("REMOVE_NETWORK all")
dev[1].request("REMOVE_NETWORK all")
dev[0].wait_disconnected()
dev[1].wait_disconnected()
hapd.disable()
@remote_compatible
def test_wpa2_ocv_vht40(dev, apdev):
"""OCV with VHT40 channel"""
try:
run_wpa2_ocv_vht40(dev, apdev)
finally:
set_world_reg(apdev[0], apdev[1], dev[0])
dev[0].flush_scan_cache()
dev[1].flush_scan_cache()
dev[2].flush_scan_cache()
def run_wpa2_ocv_vht40(dev, apdev):
for channel, capab, freq in [("40", "[HT40-]", "5200"),
("36", "[HT40+]", "5180")]:
params = { "hw_mode": "a",
"channel": channel,
"country_code": "US",
"ht_capab": capab,
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "0",
"vht_oper_centr_freq_seg0_idx": "38",
"ieee80211w": "1",
"ocv": "1" }
hapd, ssid, passphrase = ocv_setup_ap(apdev[0], params)
dev[0].flush_scan_cache()
dev[1].flush_scan_cache()
dev[2].flush_scan_cache()
for ocv in range(2):
dev[0].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1", disable_ht="1")
dev[1].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1", disable_vht="1")
dev[2].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1")
dev[0].request("REMOVE_NETWORK all")
dev[1].request("REMOVE_NETWORK all")
dev[2].request("REMOVE_NETWORK all")
dev[0].wait_disconnected()
dev[1].wait_disconnected()
dev[2].wait_disconnected()
hapd.disable()
@remote_compatible
def test_wpa2_ocv_vht80(dev, apdev):
"""OCV with VHT80 channel"""
try:
run_wpa2_ocv_vht80(dev, apdev)
finally:
set_world_reg(apdev[0], apdev[1], dev[0])
dev[0].flush_scan_cache()
dev[1].flush_scan_cache()
dev[2].flush_scan_cache()
def run_wpa2_ocv_vht80(dev, apdev):
for channel, capab, freq in [("40", "[HT40-]", "5200"),
("36", "[HT40+]", "5180")]:
params = { "hw_mode": "a",
"channel": channel,
"country_code": "US",
"ht_capab": capab,
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "1",
"vht_oper_centr_freq_seg0_idx": "42",
"ieee80211w": "1",
"ocv": "1" }
hapd, ssid, passphrase = ocv_setup_ap(apdev[0], params)
for ocv in range(2):
dev[0].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1", disable_ht="1")
dev[1].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1", disable_vht="1")
dev[2].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1")
dev[0].request("REMOVE_NETWORK all")
dev[1].request("REMOVE_NETWORK all")
dev[2].request("REMOVE_NETWORK all")
dev[0].wait_disconnected()
dev[1].wait_disconnected()
dev[2].wait_disconnected()
hapd.disable()
@remote_compatible
def test_wpa2_ocv_vht160(dev, apdev):
"""OCV with VHT160 channel"""
try:
run_wpa2_ocv_vht160(dev, apdev)
finally:
set_world_reg(apdev[0], apdev[1], dev[0])
dev[0].flush_scan_cache()
dev[1].flush_scan_cache()
dev[2].flush_scan_cache()
def run_wpa2_ocv_vht160(dev, apdev):
for channel, capab, freq in [("100", "[HT40+]", "5500"),
("104", "[HT40-]", "5520")]:
params = { "hw_mode": "a",
"channel": channel,
"country_code": "ZA",
"ht_capab": capab,
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "2",
"vht_oper_centr_freq_seg0_idx": "114",
"ieee80211w": "1",
"ocv": "1" }
hapd, ssid, passphrase = ocv_setup_ap(apdev[0], params)
for ocv in range(2):
dev[0].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1", disable_ht="1")
dev[1].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1", disable_vht="1")
dev[2].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1")
dev[0].request("REMOVE_NETWORK all")
dev[1].request("REMOVE_NETWORK all")
dev[2].request("REMOVE_NETWORK all")
dev[0].wait_disconnected()
dev[1].wait_disconnected()
dev[2].wait_disconnected()
hapd.disable()
@remote_compatible
def test_wpa2_ocv_vht80plus80(dev, apdev):
"""OCV with VHT80+80 channel"""
try:
run_wpa2_ocv_vht80plus80(dev, apdev)
finally:
set_world_reg(apdev[0], apdev[1], dev[0])
dev[0].flush_scan_cache()
dev[1].flush_scan_cache()
dev[2].flush_scan_cache()
def run_wpa2_ocv_vht80plus80(dev, apdev):
for channel, capab, freq in [("36", "[HT40+]", "5180"),
("40", "[HT40-]", "5200")]:
params = { "hw_mode": "a",
"channel": channel,
"country_code": "US",
"ht_capab": capab,
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "3",
"vht_oper_centr_freq_seg0_idx": "42",
"vht_oper_centr_freq_seg1_idx": "155",
"ieee80211w": "1",
"ieee80211d": "1",
"ieee80211h": "1",
"ocv": "1" }
hapd, ssid, passphrase = ocv_setup_ap(apdev[0], params)
for ocv in range(2):
dev[0].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1", disable_ht="1")
dev[1].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1", disable_vht="1")
dev[2].connect(ssid, psk=passphrase, scan_freq=freq, ocv=str(ocv),
ieee80211w="1")
dev[0].request("REMOVE_NETWORK all")
dev[1].request("REMOVE_NETWORK all")
dev[2].request("REMOVE_NETWORK all")
dev[0].wait_disconnected()
dev[1].wait_disconnected()
dev[2].wait_disconnected()
hapd.disable()
class APConnection:
def init_params(self):
# Static parameters
self.ssid = "test-wpa2-ocv"
self.passphrase = "qwertyuiop"
self.psk = "c2c6c255af836bed1b3f2f1ded98e052f5ad618bb554e2836757b55854a0eab7"
# Dynamic parameters
self.hapd = None
self.addr = None
self.rsne = None
self.kck = None
self.kek = None
self.msg = None
self.bssid = None
self.anonce = None
self.snonce = None
def __init__(self, apdev, dev, params):
self.init_params()
# By default, OCV is enabled for both the client and AP. The following
# parameters can be used to disable OCV for the client or AP.
ap_ocv = params.pop("ap_ocv", "1")
sta_ocv = params.pop("sta_ocv", "1")
freq = params.pop("freq")
params.update(hostapd.wpa2_params(ssid=self.ssid,
passphrase=self.passphrase))
params["wpa_pairwise_update_count"] = "10"
params["ocv"] = ap_ocv
try:
self.hapd = hostapd.add_ap(apdev, params)
except Exception, e:
if "Failed to set hostapd parameter ocv" in str(e):
raise HwsimSkip("OCV not supported")
raise
self.hapd.request("SET ext_eapol_frame_io 1")
dev.request("SET ext_eapol_frame_io 1")
self.bssid = apdev['bssid']
pmk = binascii.unhexlify("c2c6c255af836bed1b3f2f1ded98e052f5ad618bb554e2836757b55854a0eab7")
if sta_ocv != "0":
self.rsne = binascii.unhexlify("301a0100000fac040100000fac040100000fac0280400000000fac06")
else:
self.rsne = binascii.unhexlify("301a0100000fac040100000fac040100000fac0280000000000fac06")
self.snonce = binascii.unhexlify('1111111111111111111111111111111111111111111111111111111111111111')
dev.connect(self.ssid, raw_psk=self.psk, scan_freq=freq, ocv=sta_ocv,
ieee80211w="1", wait_connect=False)
self.addr = dev.p2p_interface_addr()
# Wait for EAPOL-Key msg 1/4 from hostapd to determine when associated
self.msg = recv_eapol(self.hapd)
self.anonce = self.msg['rsn_key_nonce']
(ptk, self.kck, self.kek) = pmk_to_ptk(pmk, self.addr, self.bssid,
self.snonce,self.anonce)
# hapd, addr, rsne, kck, msg, anonce, snonce
def test_bad_oci(self, logmsg, op_class, channel, seg1_idx):
logger.debug("Bad OCI element: " + logmsg)
if op_class is None:
ocikde = ""
else:
ocikde = make_ocikde(op_class, channel, seg1_idx)
reply_eapol("2/4", self.hapd, self.addr, self.msg, 0x010a, self.snonce,
self.rsne + ocikde, self.kck)
self.msg = recv_eapol(self.hapd)
if self.anonce != self.msg['rsn_key_nonce'] or self.msg["rsn_key_info"] != 138:
raise Exception("Didn't receive retransmitted 1/4")
def confirm_valid_oci(self, op_class, channel, seg1_idx):
logger.debug("Valid OCI element to complete handshake")
ocikde = make_ocikde(op_class, channel, seg1_idx)
reply_eapol("2/4", self.hapd, self.addr, self.msg, 0x010a, self.snonce,
self.rsne + ocikde, self.kck)
self.msg = recv_eapol(self.hapd)
if self.anonce != self.msg['rsn_key_nonce'] or self.msg["rsn_key_info"] != 5066:
raise Exception("Didn't receive 3/4 in response to valid 2/4")
reply_eapol("4/4", self.hapd, self.addr, self.msg, 0x030a, None, None,
self.kck)
hapd_connected(self.hapd)
@remote_compatible
def test_wpa2_ocv_ap_mismatch(dev, apdev):
"""OCV AP mismatch"""
params = { "channel": "1",
"ieee80211w": "1",
"freq": "2412" }
conn = APConnection(apdev[0], dev[0], params)
conn.test_bad_oci("element missing", None, 0, 0)
conn.test_bad_oci("wrong channel number", 81, 6, 0)
conn.test_bad_oci("invalid channel number", 81, 0, 0)
conn.test_bad_oci("wrong operating class", 80, 0, 0)
conn.test_bad_oci("invalid operating class", 0, 0, 0)
conn.confirm_valid_oci(81, 1, 0)
@remote_compatible
def test_wpa2_ocv_ap_ht_mismatch(dev, apdev):
"""OCV AP mismatch (HT)"""
params = { "channel": "6",
"ht_capab": "[HT40-]",
"ieee80211w": "1",
"freq": "2437" }
conn = APConnection(apdev[0], dev[0], params)
conn.test_bad_oci("wrong primary channel", 84, 5, 0)
conn.test_bad_oci("lower bandwidth than negotiated", 81, 6, 0)
conn.test_bad_oci("bad upper/lower channel", 83, 6, 0)
conn.confirm_valid_oci(84, 6, 0)
@remote_compatible
def test_wpa2_ocv_ap_vht80_mismatch(dev, apdev):
"""OCV AP mismatch (VHT80)"""
try:
run_wpa2_ocv_ap_vht80_mismatch(dev, apdev)
finally:
set_world_reg(apdev[0], apdev[1], dev[0])
dev[0].flush_scan_cache()
def run_wpa2_ocv_ap_vht80_mismatch(dev, apdev):
params = { "hw_mode": "a",
"channel": "36",
"country_code": "US",
"ht_capab": "[HT40+]",
"ieee80211w": "1",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "1",
"freq": "5180",
"vht_oper_centr_freq_seg0_idx": "42" }
conn = APConnection(apdev[0], dev[0], params)
conn.test_bad_oci("wrong primary channel", 128, 38, 0)
conn.test_bad_oci("wrong primary channel", 128, 32, 0)
conn.test_bad_oci("smaller bandwidth than negotiated", 116, 36, 0)
conn.test_bad_oci("smaller bandwidth than negotiated", 115, 36, 0)
conn.confirm_valid_oci(128, 36, 0)
dev[0].dump_monitor()
dev[0].request("DISCONNECT")
dev[0].wait_disconnected()
@remote_compatible
def test_wpa2_ocv_ap_vht160_mismatch(dev, apdev):
"""OCV AP mismatch (VHT160)"""
try:
run_wpa2_ocv_ap_vht160_mismatch(dev, apdev)
finally:
set_world_reg(apdev[0], apdev[1], dev[0])
dev[0].flush_scan_cache()
def run_wpa2_ocv_ap_vht160_mismatch(dev, apdev):
params = { "hw_mode": "a",
"channel": "100",
"country_code": "ZA",
"ht_capab": "[HT40+]",
"ieee80211w": "1",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "2",
"freq": "5500",
"vht_oper_centr_freq_seg0_idx": "114",
"ieee80211d": "1",
"ieee80211h": "1" }
conn = APConnection(apdev[0], dev[0], params)
conn.test_bad_oci("wrong primary channel", 129, 36, 0)
conn.test_bad_oci("wrong primary channel", 129, 114, 0)
conn.test_bad_oci("smaller bandwidth (20 Mhz) than negotiated", 121, 100, 0)
conn.test_bad_oci("smaller bandwidth (40 Mhz) than negotiated", 122, 100, 0)
conn.test_bad_oci("smaller bandwidth (80 Mhz) than negotiated", 128, 100, 0)
conn.test_bad_oci("using 80+80 channel instead of 160", 130, 100, 155)
conn.confirm_valid_oci(129, 100, 0)
dev[0].dump_monitor()
dev[0].request("DISCONNECT")
dev[0].wait_disconnected()
@remote_compatible
def test_wpa2_ocv_ap_vht80plus80_mismatch(dev, apdev):
"""OCV AP mismatch (VHT80+80)"""
try:
run_wpa2_ocv_ap_vht80plus80_mismatch(dev, apdev)
finally:
set_world_reg(apdev[0], apdev[1], dev[0])
dev[0].flush_scan_cache()
def run_wpa2_ocv_ap_vht80plus80_mismatch(dev, apdev):
params = { "hw_mode": "a",
"channel": "36",
"country_code": "US",
"ht_capab": "[HT40+]",
"ieee80211w": "1",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "3",
"freq": "5180",
"vht_oper_centr_freq_seg0_idx": "42",
"ieee80211d": "1",
"vht_oper_centr_freq_seg1_idx": "155",
"ieee80211h": "1" }
conn = APConnection(apdev[0], dev[0], params)
conn.test_bad_oci("using 80 MHz operating class", 128, 36, 155)
conn.test_bad_oci("wrong frequency segment 1", 130, 36, 138)
conn.confirm_valid_oci(130, 36, 155)
dev[0].dump_monitor()
dev[0].request("DISCONNECT")
dev[0].wait_disconnected()
@remote_compatible
def test_wpa2_ocv_ap_unexpected1(dev, apdev):
"""OCV and unexpected OCI KDE from station"""
params = { "channel": "1",
"ieee80211w": "1",
"ap_ocv": "0",
"sta_ocv": "1",
"freq": "2412" }
conn = APConnection(apdev[0], dev[0], params)
logger.debug("Client will send OCI KDE even if it was not negotiated")
conn.confirm_valid_oci(81, 1, 0)
@remote_compatible
def test_wpa2_ocv_ap_unexpected2(dev, apdev):
"""OCV and unexpected OCI KDE from station"""
params = { "channel": "1",
"ieee80211w": "1",
"ap_ocv": "1",
"sta_ocv": "0",
"freq": "2412" }
conn = APConnection(apdev[0], dev[0], params)
logger.debug("Client will send OCI KDE even if it was not negotiated")
conn.confirm_valid_oci(81, 1, 0)
@remote_compatible
def test_wpa2_ocv_ap_retransmit_msg3(dev, apdev):
"""Verify that manually retransmitted msg 3/4 contain a correct OCI"""
bssid = apdev[0]['bssid']
ssid = "test-wpa2-ocv"
passphrase = "qwertyuiop"
psk = "c2c6c255af836bed1b3f2f1ded98e052f5ad618bb554e2836757b55854a0eab7"
params = hostapd.wpa2_params(ssid=ssid)
params["wpa_psk"] = psk
params["ieee80211w"] = "1"
params["ocv"] = "1"
params['wpa_disable_eapol_key_retries'] = "1"
try:
hapd = hostapd.add_ap(apdev[0], params)
except Exception, e:
if "Failed to set hostapd parameter ocv" in str(e):
raise HwsimSkip("OCV not supported")
raise
hapd.request("SET ext_eapol_frame_io 1")
dev[0].request("SET ext_eapol_frame_io 1")
dev[0].connect(ssid, psk=passphrase, scan_freq="2412", wait_connect=False,
ocv="1", ieee80211w="1")
addr = dev[0].own_addr()
# EAPOL-Key msg 1/4
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
res = dev[0].request("EAPOL_RX " + bssid + " " + ev.split(' ')[2])
if "OK" not in res:
raise Exception("EAPOL_RX to wpa_supplicant failed")
# EAPOL-Key msg 2/4
ev = dev[0].wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from wpa_supplicant")
res = hapd.request("EAPOL_RX " + addr + " " + ev.split(' ')[2])
if "OK" not in res:
raise Exception("EAPOL_RX to hostapd failed")
# EAPOL-Key msg 3/4
ev = hapd.wait_event(["EAPOL-TX"], timeout=15)
if ev is None:
raise Exception("Timeout on EAPOL-TX from hostapd")
logger.info("Drop the first EAPOL-Key msg 3/4")
# Use normal EAPOL TX/RX to handle retries.
hapd.request("SET ext_eapol_frame_io 0")
dev[0].request("SET ext_eapol_frame_io 0")
# Manually retransmit EAPOL-Key msg 3/4
if "OK" not in hapd.request("RESEND_M3 " + addr):
raise Exception("RESEND_M3 failed")
dev[0].wait_connected()
hwsim_utils.test_connectivity(dev[0], hapd)
def test_wpa2_ocv_ap_group_hs(dev, apdev):
"""OCV group handshake (AP)"""
params = { "channel": "1",
"ieee80211w": "1",
"freq": "2412",
"wpa_strict_rekey": "1" }
conn = APConnection(apdev[0], dev[0], params)
conn.confirm_valid_oci(81, 1, 0)
conn.hapd.request("SET ext_eapol_frame_io 0")
dev[1].connect(conn.ssid, psk=conn.passphrase, scan_freq="2412", ocv="1",
ieee80211w="1")
conn.hapd.request("SET ext_eapol_frame_io 1")
# Trigger a group key handshake
dev[1].request("DISCONNECT")
dev[0].dump_monitor()
# Wait for EAPOL-Key msg 1/2
conn.msg = recv_eapol(conn.hapd)
if conn.msg["rsn_key_info"] != 4994:
raise Exception("Didn't receive 1/2 of group key handshake")
# Send a EAPOL-Key msg 2/2 with a bad OCI
logger.info("Bad OCI element")
ocikde = make_ocikde(1, 1, 1)
msg = build_eapol_key_2_2(conn.kck, ocikde, replay_counter=3)
conn.hapd.dump_monitor()
send_eapol(conn.hapd, conn.addr, build_eapol(msg))
# Wait for retransmitted EAPOL-Key msg 1/2
conn.msg = recv_eapol(conn.hapd)
if conn.msg["rsn_key_info"] != 4994:
raise Exception("Didn't receive 1/2 of group key handshake")
# Send a EAPOL-Key msg 2/2 with a good OCI
logger.info("Good OCI element")
ocikde = make_ocikde(81, 1, 0)
msg = build_eapol_key_2_2(conn.kck, ocikde, replay_counter=4)
conn.hapd.dump_monitor()
send_eapol(conn.hapd, conn.addr, build_eapol(msg))
# Verify that group key handshake has completed
ev = conn.hapd.wait_event(["EAPOL-TX"], timeout=1)
if ev is not None:
eapol = binascii.unhexlify(ev.split(' ')[2])
msg = parse_eapol(eapol)
if msg["rsn_key_info"] == 4994:
raise Exception("AP didn't accept 2/2 of group key handshake")
class STAConnection:
def init_params(self):
# Static parameters
self.ssid = "test-wpa2-ocv"
self.passphrase = "qwertyuiop"
self.psk = "c2c6c255af836bed1b3f2f1ded98e052f5ad618bb554e2836757b55854a0eab7"
# Dynamic parameters
self.hapd = None
self.dev = None
self.addr = None
self.rsne = None
self.kck = None
self.kek = None
self.msg = None
self.bssid = None
self.anonce = None
self.snonce = None
self.gtkie = None
self.counter = None
def __init__(self, apdev, dev, params, sta_params=None):
self.init_params()
self.dev = dev
self.bssid = apdev['bssid']
freq = params.pop("freq")
if sta_params is None:
sta_params = dict()
if not "ocv" in sta_params:
sta_params["ocv"] = "1"
if not "ieee80211w" in sta_params:
sta_params["ieee80211w"] = "1"
params.update(hostapd.wpa2_params(ssid=self.ssid,
passphrase=self.passphrase))
params['wpa_pairwise_update_count'] = "10"
try:
self.hapd = hostapd.add_ap(apdev, params)
except Exception, e:
if "Failed to set hostapd parameter ocv" in str(e):
raise HwsimSkip("OCV not supported")
raise
self.hapd.request("SET ext_eapol_frame_io 1")
self.dev.request("SET ext_eapol_frame_io 1")
pmk = binascii.unhexlify("c2c6c255af836bed1b3f2f1ded98e052f5ad618bb554e2836757b55854a0eab7")
self.gtkie = binascii.unhexlify("dd16000fac010100dc11188831bf4aa4a8678d2b41498618")
if sta_params["ocv"] != "0":
self.rsne = binascii.unhexlify("30140100000fac040100000fac040100000fac028c40")
else:
self.rsne = binascii.unhexlify("30140100000fac040100000fac040100000fac028c00")
self.dev.connect(self.ssid, raw_psk=self.psk, scan_freq=freq,
wait_connect=False, **sta_params)
self.addr = dev.p2p_interface_addr()
# Forward msg 1/4 from AP to STA
self.msg = recv_eapol(self.hapd)
self.anonce = self.msg['rsn_key_nonce']
send_eapol(self.dev, self.bssid, build_eapol(self.msg))
# Capture msg 2/4 from the STA so we can derive the session keys
self.msg = recv_eapol(dev)
self.snonce = self.msg['rsn_key_nonce']
(ptk, self.kck, self.kek) = pmk_to_ptk(pmk, self.addr, self.bssid,
self.snonce,self.anonce)
self.counter = struct.unpack('>Q',
self.msg['rsn_replay_counter'])[0] + 1
def test_bad_oci(self, logmsg, op_class, channel, seg1_idx, errmsg):
logger.info("Bad OCI element: " + logmsg)
if op_class is None:
ocikde = ""
else:
ocikde = make_ocikde(op_class, channel, seg1_idx)
plain = self.rsne + self.gtkie + ocikde
wrapped = aes_wrap(self.kek, pad_key_data(plain))
msg = build_eapol_key_3_4(self.anonce, self.kck, wrapped,
replay_counter=self.counter)
self.dev.dump_monitor()
send_eapol(self.dev, self.bssid, build_eapol(msg))
self.counter += 1
ev = self.dev.wait_event([errmsg], timeout=5)
if ev is None:
raise Exception("Bad OCI not reported")
def confirm_valid_oci(self, op_class, channel, seg1_idx):
logger.debug("Valid OCI element to complete handshake")
ocikde = make_ocikde(op_class, channel, seg1_idx)
plain = self.rsne + self.gtkie + ocikde
wrapped = aes_wrap(self.kek, pad_key_data(plain))
msg = build_eapol_key_3_4(self.anonce, self.kck, wrapped,
replay_counter=self.counter)
self.dev.dump_monitor()
send_eapol(self.dev, self.bssid, build_eapol(msg))
self.counter += 1
self.dev.wait_connected(timeout=1)
@remote_compatible
def test_wpa2_ocv_mismatch_client(dev, apdev):
"""OCV client mismatch"""
params = { "channel": "1",
"ieee80211w": "1",
"ocv": "1",
"freq": "2412" }
conn = STAConnection(apdev[0], dev[0], params)
conn.test_bad_oci("element missing", None, 0, 0,
"did not receive mandatory OCI")
conn.test_bad_oci("wrong channel number", 81, 6, 0,
"primary channel mismatch")
conn.test_bad_oci("invalid channel number", 81, 0, 0,
"unable to interpret received OCI")
conn.test_bad_oci("wrong operating class", 80, 0, 0,
"unable to interpret received OCI")
conn.test_bad_oci("invalid operating class", 0, 0, 0,
"unable to interpret received OCI")
conn.confirm_valid_oci(81, 1, 0)
@remote_compatible
def test_wpa2_ocv_vht160_mismatch_client(dev, apdev):
"""OCV client mismatch (VHT160)"""
try:
run_wpa2_ocv_vht160_mismatch_client(dev, apdev)
finally:
set_world_reg(apdev[0], apdev[1], dev[0])
dev[0].flush_scan_cache()
def run_wpa2_ocv_vht160_mismatch_client(dev, apdev):
params = { "hw_mode": "a",
"channel": "100",
"country_code": "ZA",
"ht_capab": "[HT40+]",
"ieee80211w": "1",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "2",
"ocv": "1",
"vht_oper_centr_freq_seg0_idx": "114",
"freq": "5500",
"ieee80211d": "1",
"ieee80211h": "1" }
sta_params = { "disable_vht": "1" }
conn = STAConnection(apdev[0], dev[0], params, sta_params)
conn.test_bad_oci("smaller bandwidth (20 Mhz) than negotiated",
121, 100, 0, "channel bandwidth mismatch")
conn.test_bad_oci("wrong frequency, bandwith, and secondary channel",
123, 104, 0, "primary channel mismatch")
conn.test_bad_oci("wrong upper/lower behaviour",
129, 104, 0, "primary channel mismatch")
conn.confirm_valid_oci(122, 100, 0)
def test_wpa2_ocv_sta_group_hs(dev, apdev):
"""OCV group handshake (STA)"""
params = { "channel": "1",
"ieee80211w": "1",
"ocv": "1",
"freq": "2412",
"wpa_strict_rekey": "1" }
conn = STAConnection(apdev[0], dev[0], params.copy())
conn.confirm_valid_oci(81, 1, 0)
# Send a EAPOL-Key msg 1/2 with a bad OCI
logger.info("Bad OCI element")
plain = conn.gtkie + make_ocikde(1, 1, 1)
wrapped = aes_wrap(conn.kek, pad_key_data(plain))
msg = build_eapol_key_1_2(conn.kck, wrapped, replay_counter=3)
send_eapol(dev[0], conn.bssid, build_eapol(msg))
# We shouldn't get a EAPOL-Key message back
ev = dev[0].wait_event(["EAPOL-TX"], timeout=1)
if ev is not None:
raise Exception("Received response to invalid EAPOL-Key 1/2")
# Reset AP to try with valid OCI
conn.hapd.disable()
conn = STAConnection(apdev[0], dev[0], params.copy())
conn.confirm_valid_oci(81, 1, 0)
# Send a EAPOL-Key msg 1/2 with a good OCI
logger.info("Good OCI element")
plain = conn.gtkie + make_ocikde(81, 1, 0)
wrapped = aes_wrap(conn.kek, pad_key_data(plain))
msg = build_eapol_key_1_2(conn.kck, wrapped, replay_counter=4)
send_eapol(dev[0], conn.bssid, build_eapol(msg))
# Wait for EAPOL-Key msg 2/2
conn.msg = recv_eapol(dev[0])
if conn.msg["rsn_key_info"] != 0x0302:
raise Exception("Didn't receive 2/2 of group key handshake")
Reference in a new issue Copy permalink