tests/hwsim/test_ap_ciphers.py

   1 # Cipher suite tests
   2 # Copyright (c) 2013, 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
  15 def check_cipher(dev, ap, cipher):
  16     if cipher not in dev.get_capability("pairwise"):
  17         return "skip"
  18     params = { "ssid": "test-wpa2-psk",
  19                "wpa_passphrase": "12345678",
  20                "wpa": "2",
  21                "wpa_key_mgmt": "WPA-PSK",
  22                "rsn_pairwise": cipher }
  23     hapd = hostapd.add_ap(ap['ifname'], params)
  24     dev.connect("test-wpa2-psk", psk="12345678",
  25                 pairwise=cipher, group=cipher, scan_freq="2412")
  26     hwsim_utils.test_connectivity(dev, hapd)
  27
  28 def test_ap_cipher_tkip(dev, apdev):
  29     """WPA2-PSK/TKIP connection"""
  30     return check_cipher(dev[0], apdev[0], "TKIP")
  31
  32 def test_ap_cipher_tkip_countermeasures_ap(dev, apdev):
  33     """WPA-PSK/TKIP countermeasures (detected by AP)"""
  34     testfile = "/sys/kernel/debug/ieee80211/%s/netdev:%s/tkip_mic_test" % (dev[0].get_driver_status_field("phyname"), dev[0].ifname)
  35     if not os.path.exists(testfile):
  36         return "skip"
  37
  38     params = { "ssid": "tkip-countermeasures",
  39                "wpa_passphrase": "12345678",
  40                "wpa": "1",
  41                "wpa_key_mgmt": "WPA-PSK",
  42                "wpa_pairwise": "TKIP" }
  43     hapd = hostapd.add_ap(apdev[0]['ifname'], params)
  44
  45     dev[0].connect("tkip-countermeasures", psk="12345678",
  46                    pairwise="TKIP", group="TKIP", scan_freq="2412")
  47
  48     dev[0].dump_monitor()
  49     with open(testfile, "w") as f:
  50         f.write(apdev[0]['bssid'])
  51     ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=1)
  52     if ev is not None:
  53         raise Exception("Unexpected disconnection on first Michael MIC failure")
  54
  55     with open(testfile, "w") as f:
  56         f.write("ff:ff:ff:ff:ff:ff")
  57     ev = dev[0].wait_disconnected(timeout=10,
  58                                   error="No disconnection after two Michael MIC failures")
  59     if "reason=14" not in ev:
  60         raise Exception("Unexpected disconnection reason: " + ev)
  61     ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=1)
  62     if ev is not None:
  63         raise Exception("Unexpected connection during TKIP countermeasures")
  64
  65 def test_ap_cipher_tkip_countermeasures_sta(dev, apdev):
  66     """WPA-PSK/TKIP countermeasures (detected by STA)"""
  67     params = { "ssid": "tkip-countermeasures",
  68                "wpa_passphrase": "12345678",
  69                "wpa": "1",
  70                "wpa_key_mgmt": "WPA-PSK",
  71                "wpa_pairwise": "TKIP" }
  72     hapd = hostapd.add_ap(apdev[0]['ifname'], params)
  73
  74     testfile = "/sys/kernel/debug/ieee80211/%s/netdev:%s/tkip_mic_test" % (hapd.get_driver_status_field("phyname"), apdev[0]['ifname'])
  75     if not os.path.exists(testfile):
  76         return "skip"
  77
  78     dev[0].connect("tkip-countermeasures", psk="12345678",
  79                    pairwise="TKIP", group="TKIP", scan_freq="2412")
  80
  81     dev[0].dump_monitor()
  82     with open(testfile, "w") as f:
  83         f.write(dev[0].p2p_dev_addr())
  84     ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=1)
  85     if ev is not None:
  86         raise Exception("Unexpected disconnection on first Michael MIC failure")
  87
  88     with open(testfile, "w") as f:
  89         f.write("ff:ff:ff:ff:ff:ff")
  90     ev = dev[0].wait_disconnected(timeout=10,
  91                                   error="No disconnection after two Michael MIC failures")
  92     if "reason=14 locally_generated=1" not in ev:
  93         raise Exception("Unexpected disconnection reason: " + ev)
  94     ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=1)
  95     if ev is not None:
  96         raise Exception("Unexpected connection during TKIP countermeasures")
  97
  98 def test_ap_cipher_ccmp(dev, apdev):
  99     """WPA2-PSK/CCMP connection"""
 100     return check_cipher(dev[0], apdev[0], "CCMP")
 101
 102 def test_ap_cipher_gcmp(dev, apdev):
 103     """WPA2-PSK/GCMP connection"""
 104     return check_cipher(dev[0], apdev[0], "GCMP")
 105
 106 def test_ap_cipher_ccmp_256(dev, apdev):
 107     """WPA2-PSK/CCMP-256 connection"""
 108     return check_cipher(dev[0], apdev[0], "CCMP-256")
 109
 110 def test_ap_cipher_gcmp_256(dev, apdev):
 111     """WPA2-PSK/GCMP-256 connection"""
 112     return check_cipher(dev[0], apdev[0], "GCMP-256")
 113
 114 def test_ap_cipher_mixed_wpa_wpa2(dev, apdev):
 115     """WPA2-PSK/CCMP/ and WPA-PSK/TKIP mixed configuration"""
 116     ssid = "test-wpa-wpa2-psk"
 117     passphrase = "12345678"
 118     params = { "ssid": ssid,
 119                "wpa_passphrase": passphrase,
 120                "wpa": "3",
 121                "wpa_key_mgmt": "WPA-PSK",
 122                "rsn_pairwise": "CCMP",
 123                "wpa_pairwise": "TKIP" }
 124     hapd = hostapd.add_ap(apdev[0]['ifname'], params)
 125     dev[0].connect(ssid, psk=passphrase, proto="WPA2",
 126                    pairwise="CCMP", group="TKIP", scan_freq="2412")
 127     status = dev[0].get_status()
 128     if status['key_mgmt'] != 'WPA2-PSK':
 129         raise Exception("Incorrect key_mgmt reported")
 130     if status['pairwise_cipher'] != 'CCMP':
 131         raise Exception("Incorrect pairwise_cipher reported")
 132     if status['group_cipher'] != 'TKIP':
 133         raise Exception("Incorrect group_cipher reported")
 134     bss = dev[0].get_bss(apdev[0]['bssid'])
 135     if bss['ssid'] != ssid:
 136         raise Exception("Unexpected SSID in the BSS entry")
 137     if "[WPA-PSK-TKIP]" not in bss['flags']:
 138         raise Exception("Missing BSS flag WPA-PSK-TKIP")
 139     if "[WPA2-PSK-CCMP]" not in bss['flags']:
 140         raise Exception("Missing BSS flag WPA2-PSK-CCMP")
 141     hwsim_utils.test_connectivity(dev[0], hapd)
 142
 143     dev[1].connect(ssid, psk=passphrase, proto="WPA",
 144                    pairwise="TKIP", group="TKIP", scan_freq="2412")
 145     status = dev[1].get_status()
 146     if status['key_mgmt'] != 'WPA-PSK':
 147         raise Exception("Incorrect key_mgmt reported")
 148     if status['pairwise_cipher'] != 'TKIP':
 149         raise Exception("Incorrect pairwise_cipher reported")
 150     if status['group_cipher'] != 'TKIP':
 151         raise Exception("Incorrect group_cipher reported")
 152     hwsim_utils.test_connectivity(dev[1], hapd)
 153     hwsim_utils.test_connectivity(dev[0], dev[1])