tests/hwsim/test_ap_ciphers.py

   1 # Cipher suite tests
   2 # Copyright (c) 2013-2015, Jouni Malinen <j@w1.fi>
   3 #
   4 # This software may be distributed under the terms of the BSD license.
   5 # See README for more details.
   6
   7 import time
   8 import logging
   9 logger = logging.getLogger()
  10 import os.path
  11
  12 import hwsim_utils
  13 import hostapd
  14 from utils import HwsimSkip, skip_with_fips
  15 from wlantest import Wlantest
  16
  17 def check_cipher(dev, ap, cipher):
  18     if cipher not in dev.get_capability("pairwise"):
  19         raise HwsimSkip("Cipher %s not supported" % cipher)
  20     params = { "ssid": "test-wpa2-psk",
  21                "wpa_passphrase": "12345678",
  22                "wpa": "2",
  23                "wpa_key_mgmt": "WPA-PSK",
  24                "rsn_pairwise": cipher }
  25     hapd = hostapd.add_ap(ap, params)
  26     dev.connect("test-wpa2-psk", psk="12345678",
  27                 pairwise=cipher, group=cipher, scan_freq="2412")
  28     hwsim_utils.test_connectivity(dev, hapd)
  29
  30 def check_group_mgmt_cipher(dev, ap, cipher):
  31     if cipher not in dev.get_capability("group_mgmt"):
  32         raise HwsimSkip("Cipher %s not supported" % cipher)
  33     params = { "ssid": "test-wpa2-psk-pmf",
  34                "wpa_passphrase": "12345678",
  35                "wpa": "2",
  36                "ieee80211w": "2",
  37                "wpa_key_mgmt": "WPA-PSK-SHA256",
  38                "rsn_pairwise": "CCMP",
  39                "group_mgmt_cipher": cipher }
  40     hapd = hostapd.add_ap(ap, params)
  41
  42     Wlantest.setup(hapd)
  43     wt = Wlantest()
  44     wt.flush()
  45     wt.add_passphrase("12345678")
  46
  47     dev.connect("test-wpa2-psk-pmf", psk="12345678", ieee80211w="2",
  48                 key_mgmt="WPA-PSK-SHA256",
  49                 pairwise="CCMP", group="CCMP", scan_freq="2412")
  50     hwsim_utils.test_connectivity(dev, hapd)
  51     hapd.request("DEAUTHENTICATE ff:ff:ff:ff:ff:ff")
  52     dev.wait_disconnected()
  53     if wt.get_bss_counter('valid_bip_mmie', ap['bssid']) < 1:
  54         raise Exception("No valid BIP MMIE seen")
  55     if wt.get_bss_counter('bip_deauth', ap['bssid']) < 1:
  56         raise Exception("No valid BIP deauth seen")
  57
  58     if cipher == "AES-128-CMAC":
  59         group_mgmt = "BIP"
  60     else:
  61         group_mgmt = cipher
  62     res =  wt.info_bss('group_mgmt', ap['bssid']).strip()
  63     if res != group_mgmt:
  64         raise Exception("Unexpected group mgmt cipher: " + res)
  65
  66 def test_ap_cipher_tkip(dev, apdev):
  67     """WPA2-PSK/TKIP connection"""
  68     skip_with_fips(dev[0])
  69     check_cipher(dev[0], apdev[0], "TKIP")
  70
  71 def test_ap_cipher_tkip_countermeasures_ap(dev, apdev):
  72     """WPA-PSK/TKIP countermeasures (detected by AP)"""
  73     skip_with_fips(dev[0])
  74     testfile = "/sys/kernel/debug/ieee80211/%s/netdev:%s/tkip_mic_test" % (dev[0].get_driver_status_field("phyname"), dev[0].ifname)
  75     if not os.path.exists(testfile):
  76         raise HwsimSkip("tkip_mic_test not supported in mac80211")
  77
  78     params = { "ssid": "tkip-countermeasures",
  79                "wpa_passphrase": "12345678",
  80                "wpa": "1",
  81                "wpa_key_mgmt": "WPA-PSK",
  82                "wpa_pairwise": "TKIP" }
  83     hapd = hostapd.add_ap(apdev[0], params)
  84
  85     dev[0].connect("tkip-countermeasures", psk="12345678",
  86                    pairwise="TKIP", group="TKIP", scan_freq="2412")
  87
  88     dev[0].dump_monitor()
  89     with open(testfile, "w") as f:
  90         f.write(apdev[0]['bssid'])
  91     ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=1)
  92     if ev is not None:
  93         raise Exception("Unexpected disconnection on first Michael MIC failure")
  94
  95     with open(testfile, "w") as f:
  96         f.write("ff:ff:ff:ff:ff:ff")
  97     ev = dev[0].wait_disconnected(timeout=10,
  98                                   error="No disconnection after two Michael MIC failures")
  99     if "reason=14" not in ev:
 100         raise Exception("Unexpected disconnection reason: " + ev)
 101     ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=1)
 102     if ev is not None:
 103         raise Exception("Unexpected connection during TKIP countermeasures")
 104
 105 def test_ap_cipher_tkip_countermeasures_sta(dev, apdev):
 106     """WPA-PSK/TKIP countermeasures (detected by STA)"""
 107     skip_with_fips(dev[0])
 108     params = { "ssid": "tkip-countermeasures",
 109                "wpa_passphrase": "12345678",
 110                "wpa": "1",
 111                "wpa_key_mgmt": "WPA-PSK",
 112                "wpa_pairwise": "TKIP" }
 113     hapd = hostapd.add_ap(apdev[0], params)
 114
 115     testfile = "/sys/kernel/debug/ieee80211/%s/netdev:%s/tkip_mic_test" % (hapd.get_driver_status_field("phyname"), apdev[0]['ifname'])
 116     if not os.path.exists(testfile):
 117         raise HwsimSkip("tkip_mic_test not supported in mac80211")
 118
 119     dev[0].connect("tkip-countermeasures", psk="12345678",
 120                    pairwise="TKIP", group="TKIP", scan_freq="2412")
 121
 122     dev[0].dump_monitor()
 123     with open(testfile, "w") as f:
 124         f.write(dev[0].own_addr())
 125     ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=1)
 126     if ev is not None:
 127         raise Exception("Unexpected disconnection on first Michael MIC failure")
 128
 129     with open(testfile, "w") as f:
 130         f.write("ff:ff:ff:ff:ff:ff")
 131     ev = dev[0].wait_disconnected(timeout=10,
 132                                   error="No disconnection after two Michael MIC failures")
 133     if "reason=14 locally_generated=1" not in ev:
 134         raise Exception("Unexpected disconnection reason: " + ev)
 135     ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=1)
 136     if ev is not None:
 137         raise Exception("Unexpected connection during TKIP countermeasures")
 138
 139 def test_ap_cipher_ccmp(dev, apdev):
 140     """WPA2-PSK/CCMP connection"""
 141     check_cipher(dev[0], apdev[0], "CCMP")
 142
 143 def test_ap_cipher_gcmp(dev, apdev):
 144     """WPA2-PSK/GCMP connection"""
 145     check_cipher(dev[0], apdev[0], "GCMP")
 146
 147 def test_ap_cipher_ccmp_256(dev, apdev):
 148     """WPA2-PSK/CCMP-256 connection"""
 149     check_cipher(dev[0], apdev[0], "CCMP-256")
 150
 151 def test_ap_cipher_gcmp_256(dev, apdev):
 152     """WPA2-PSK/GCMP-256 connection"""
 153     check_cipher(dev[0], apdev[0], "GCMP-256")
 154
 155 def test_ap_cipher_mixed_wpa_wpa2(dev, apdev):
 156     """WPA2-PSK/CCMP/ and WPA-PSK/TKIP mixed configuration"""
 157     skip_with_fips(dev[0])
 158     ssid = "test-wpa-wpa2-psk"
 159     passphrase = "12345678"
 160     params = { "ssid": ssid,
 161                "wpa_passphrase": passphrase,
 162                "wpa": "3",
 163                "wpa_key_mgmt": "WPA-PSK",
 164                "rsn_pairwise": "CCMP",
 165                "wpa_pairwise": "TKIP" }
 166     hapd = hostapd.add_ap(apdev[0], params)
 167     dev[0].connect(ssid, psk=passphrase, proto="WPA2",
 168                    pairwise="CCMP", group="TKIP", scan_freq="2412")
 169     status = dev[0].get_status()
 170     if status['key_mgmt'] != 'WPA2-PSK':
 171         raise Exception("Incorrect key_mgmt reported")
 172     if status['pairwise_cipher'] != 'CCMP':
 173         raise Exception("Incorrect pairwise_cipher reported")
 174     if status['group_cipher'] != 'TKIP':
 175         raise Exception("Incorrect group_cipher reported")
 176     bss = dev[0].get_bss(apdev[0]['bssid'])
 177     if bss['ssid'] != ssid:
 178         raise Exception("Unexpected SSID in the BSS entry")
 179     if "[WPA-PSK-TKIP]" not in bss['flags']:
 180         raise Exception("Missing BSS flag WPA-PSK-TKIP")
 181     if "[WPA2-PSK-CCMP]" not in bss['flags']:
 182         raise Exception("Missing BSS flag WPA2-PSK-CCMP")
 183     hwsim_utils.test_connectivity(dev[0], hapd)
 184
 185     dev[1].connect(ssid, psk=passphrase, proto="WPA",
 186                    pairwise="TKIP", group="TKIP", scan_freq="2412")
 187     status = dev[1].get_status()
 188     if status['key_mgmt'] != 'WPA-PSK':
 189         raise Exception("Incorrect key_mgmt reported")
 190     if status['pairwise_cipher'] != 'TKIP':
 191         raise Exception("Incorrect pairwise_cipher reported")
 192     if status['group_cipher'] != 'TKIP':
 193         raise Exception("Incorrect group_cipher reported")
 194     hwsim_utils.test_connectivity(dev[1], hapd)
 195     hwsim_utils.test_connectivity(dev[0], dev[1])
 196
 197 def test_ap_cipher_bip(dev, apdev):
 198     """WPA2-PSK with BIP"""
 199     check_group_mgmt_cipher(dev[0], apdev[0], "AES-128-CMAC")
 200
 201 def test_ap_cipher_bip_gmac_128(dev, apdev):
 202     """WPA2-PSK with BIP-GMAC-128"""
 203     check_group_mgmt_cipher(dev[0], apdev[0], "BIP-GMAC-128")
 204
 205 def test_ap_cipher_bip_gmac_256(dev, apdev):
 206     """WPA2-PSK with BIP-GMAC-256"""
 207     check_group_mgmt_cipher(dev[0], apdev[0], "BIP-GMAC-256")
 208
 209 def test_ap_cipher_bip_cmac_256(dev, apdev):
 210     """WPA2-PSK with BIP-CMAC-256"""
 211     check_group_mgmt_cipher(dev[0], apdev[0], "BIP-CMAC-256")