tests: Add PASN test coverage

Signed-off-by: Ilan Peer <ilan.peer@intel.com>

tests/hwsim/example-hostapd.config

@@ -112,3 +112,4 @@ CONFIG_OWE=y
 CONFIG_DPP=y
 CONFIG_DPP2=y
 CONFIG_WEP=y
+CONFIG_PASN=y

tests/hwsim/example-wpa_supplicant.config

@@ -155,3 +155,4 @@ CONFIG_OWE=y
 CONFIG_DPP=y
 CONFIG_DPP2=y
 CONFIG_WEP=y
+CONFIG_PASN=y

tests/hwsim/hostapd.py

@@ -535,6 +535,23 @@ class Hostapd:
     def send_file(self, src, dst):
         self.host.send_file(src, dst)
 
+    def get_ptksa(self, bssid, cipher):
+        res = self.request("PTKSA_CACHE_LIST")
+        lines = res.splitlines()
+        for l in lines:
+            if bssid not in l or cipher not in l:
+                continue
+            vals = dict()
+            [index, addr, cipher, expiration, tk, kdk] = l.split(' ', 5)
+            vals['index'] = index
+            vals['addr'] = addr
+            vals['cipher'] = cipher
+            vals['expiration'] = expiration
+            vals['tk'] = tk
+            vals['kdk'] = kdk
+            return vals
+        return None
+
 def add_ap(apdev, params, wait_enabled=True, no_enable=False, timeout=30,
            global_ctrl_override=None, driver=False):
         if isinstance(apdev, dict):

tests/hwsim/test_pasn.py

@@ -0,0 +1,353 @@
+# Test cases for PASN
+# Copyright (C) 2019 Intel Corporation
+#
+# This software may be distributed under the terms of the BSD license.
+# See README for more details.
+
+from remotehost import remote_compatible
+import binascii
+import os
+import time
+import logging
+logger = logging.getLogger()
+import socket
+import struct
+import subprocess
+
+import hwsim_utils
+import hostapd
+from wpasupplicant import WpaSupplicant
+from utils import *
+from hwsim import HWSimRadio
+from test_erp import check_erp_capa, start_erp_as
+from test_fils import check_fils_capa
+
+def check_pasn_capab(dev):
+    if "PASN" not in dev.get_capability("auth_alg"):
+        raise HwsimSkip("PASN not supported")
+
+def pasn_ap_params(akmp="PASN", cipher="CCMP", group="19"):
+    params = {"ssid": "test-wpa2-pasn",
+              "wpa_passphrase": "12345678",
+              "wpa": "2",
+              "ieee80211w": "2",
+              "wpa_key_mgmt": "WPA-PSK " + akmp,
+              "rsn_pairwise": cipher,
+              "pasn_groups" : group}
+
+    return params
+
+def start_pasn_ap(apdev, params):
+    try:
+        return hostapd.add_ap(apdev, params)
+    except Exception as e:
+        if "Failed to set hostapd parameter wpa_key_mgmt" in str(e) or \
+           "Failed to set hostapd parameter force_kdk_derivation" in str(e):
+            raise HwsimSkip("PASN not supported")
+        raise
+
+def check_pasn_ptk(dev, hapd, cipher):
+    sta_ptksa = dev.get_ptksa(hapd.own_addr(), cipher)
+    ap_ptksa = hapd.get_ptksa(dev.own_addr(), cipher)
+    if not (sta_ptksa and ap_ptksa):
+        raise Exception("Could not get PTKSA entry")
+
+    logger.info("sta: TK: %s KDK: %s" % (sta_ptksa['tk'], sta_ptksa['kdk']))
+    logger.info("ap : TK: %s KDK: %s" % (ap_ptksa['tk'], ap_ptksa['kdk']))
+
+    if sta_ptksa['tk'] != ap_ptksa['tk'] or sta_ptksa['kdk'] != ap_ptksa['kdk']:
+        raise Exception("TK/KDK mismatch")
+
+def check_pasn_akmp_cipher(dev, hapd, akmp="PASN", cipher="CCMP",
+                           group="19", status=0, fail=0):
+    dev.scan(type="ONLY", freq=2412)
+
+    cmd = "PASN_START bssid=%s akmp=%s cipher=%s group=%s" % (hapd.own_addr(), akmp, cipher, group)
+
+    resp = dev.request(cmd)
+    if fail:
+        if "OK" in resp:
+            raise Exception("Unexpected success to start PASN authentication")
+        return
+
+    if "OK" not in resp:
+        raise Exception("Failed to start PASN authentication")
+
+    ev = dev.wait_event(["PASN-AUTH-STATUS"], 3)
+    if not ev:
+        raise Exception("PASN: PASN-AUTH-STATUS not seen")
+
+    if hapd.own_addr() + " akmp=" + akmp + ", status=" + str(status) not in ev:
+        raise Exception("PASN: unexpected status")
+
+    if status:
+        return
+
+    check_pasn_ptk(dev, hapd, cipher)
+
+@remote_compatible
+def test_pasn_ccmp(dev, apdev):
+    """PASN authentication with WPA2/CCMP AP"""
+    check_pasn_capab(dev[0])
+
+    params = pasn_ap_params("PASN", "CCMP", "19")
+    hapd = start_pasn_ap(apdev[0], params)
+
+    check_pasn_akmp_cipher(dev[0], hapd, "PASN", "CCMP")
+
+@remote_compatible
+def test_pasn_gcmp(dev, apdev):
+    """PASN authentication with WPA2/GCMP AP"""
+    check_pasn_capab(dev[0])
+
+    params = pasn_ap_params("PASN", "GCMP", "19")
+    hapd = start_pasn_ap(apdev[0], params)
+
+    check_pasn_akmp_cipher(dev[0], hapd, "PASN", "GCMP")
+
+@remote_compatible
+def test_pasn_ccmp_256(dev, apdev):
+    """PASN authentication with WPA2/CCMP256 AP"""
+    check_pasn_capab(dev[0])
+
+    params = pasn_ap_params("PASN", "CCMP-256", "19")
+    hapd = start_pasn_ap(apdev[0], params)
+
+    check_pasn_akmp_cipher(dev[0], hapd, "PASN", "CCMP-256")
+
+@remote_compatible
+def test_pasn_gcmp_256(dev, apdev):
+    """PASN authentication with WPA2/GCMP-256 AP"""
+    check_pasn_capab(dev[0])
+
+    params = pasn_ap_params("PASN", "GCMP-256", "19")
+    hapd = start_pasn_ap(apdev[0], params)
+
+    check_pasn_akmp_cipher(dev[0], hapd, "PASN", "GCMP-256")
+
+@remote_compatible
+def test_pasn_group_mismatch(dev, apdev):
+    """PASN authentication with WPA2/CCMP AP with group mismatch"""
+    check_pasn_capab(dev[0])
+
+    params = pasn_ap_params("PASN", "CCMP", "20")
+    hapd = start_pasn_ap(apdev[0], params)
+
+    check_pasn_akmp_cipher(dev[0], hapd, "PASN", "CCMP", status=77)
+
+@remote_compatible
+def test_pasn_channel_mismatch(dev, apdev):
+    """PASN authentication with WPA2/CCMP AP with channel mismatch"""
+    check_pasn_capab(dev[0])
+
+    params = pasn_ap_params("PASN", "CCMP")
+    params['channel'] = "6"
+    hapd = start_pasn_ap(apdev[0], params)
+
+    check_pasn_akmp_cipher(dev[0], hapd, "PASN", "CCMP", fail=1)
+
+@remote_compatible
+def test_pasn_while_connected_same_channel(dev, apdev):
+    """PASN authentication with WPA2/CCMP AP while connected same channel"""
+    check_pasn_capab(dev[0])
+
+    ssid = "test-wpa2-psk"
+    psk = '602e323e077bc63bd80307ef4745b754b0ae0a925c2638ecd13a794b9527b9e6'
+    params = hostapd.wpa2_params(ssid=ssid)
+    params['wpa_psk'] = psk
+    hapd = start_pasn_ap(apdev[0], params)
+
+    dev[0].connect(ssid, raw_psk=psk, scan_freq="2412")
+
+    params = pasn_ap_params("PASN", "CCMP")
+    hapd = start_pasn_ap(apdev[1], params)
+
+    check_pasn_akmp_cipher(dev[0], hapd, "PASN", "CCMP")
+
+@remote_compatible
+def test_pasn_while_connected_same_ap(dev, apdev):
+    """PASN authentication with WPA2/CCMP AP while connected to it"""
+    check_pasn_capab(dev[0])
+
+    params = hostapd.wpa2_params(ssid="test-wpa2-psk",
+                                 passphrase="12345678")
+    hapd = start_pasn_ap(apdev[0], params)
+
+    dev[0].connect("test-wpa2-psk", psk="12345678", scan_freq="2412")
+
+    check_pasn_akmp_cipher(dev[0], hapd, "PASN", "CCMP", fail=1)
+
+@remote_compatible
+def test_pasn_while_connected_diff_channel(dev, apdev):
+    """PASN authentication with WPA2/CCMP AP while connected diff channel"""
+    check_pasn_capab(dev[0])
+
+    with HWSimRadio(n_channels=2) as (radio, iface):
+        wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
+        wpas.interface_add(iface)
+
+        if wpas.get_mcc() < 2:
+            raise HwsimSkip("PASN: New radio does not support MCC")
+
+        params = hostapd.wpa2_params(ssid="test-wpa2-psk",
+                                     passphrase="12345678")
+        params['channel'] = "6"
+        hapd = start_pasn_ap(apdev[0], params)
+        wpas.connect("test-wpa2-psk", psk="12345678", scan_freq="2437")
+
+        params = pasn_ap_params("PASN", "CCMP")
+        hapd2 = start_pasn_ap(apdev[1], params)
+
+        check_pasn_akmp_cipher(wpas, hapd2, "PASN", "CCMP")
+
+@remote_compatible
+def test_pasn_sae_pmksa_cache(dev, apdev):
+    """PASN authentication with SAE AP with PMKSA caching"""
+    check_pasn_capab(dev[0])
+    check_sae_capab(dev[0])
+
+    params = hostapd.wpa2_params(ssid="test-sae",
+                                 passphrase="12345678")
+    params['wpa_key_mgmt'] = 'SAE PASN'
+    hapd = start_pasn_ap(apdev[0], params)
+
+    dev[0].set("sae_groups", "19")
+    dev[0].connect("test-sae", psk="12345678", key_mgmt="SAE", scan_freq="2412")
+
+    hapd.wait_sta()
+    hwsim_utils.test_connectivity(dev[0], hapd)
+
+    dev[0].request("DISCONNECT")
+    dev[0].wait_disconnected()
+
+    check_pasn_akmp_cipher(dev[0], hapd, "SAE", "CCMP")
+
+def check_pasn_fils_pmksa_cache(dev, apdev, params, key_mgmt):
+    check_fils_capa(dev[0])
+    check_erp_capa(dev[0])
+    check_pasn_capab(dev[0])
+
+    start_erp_as(msk_dump=os.path.join(params['logdir'], "msk.lst"))
+
+    bssid = apdev[0]['bssid']
+    params = hostapd.wpa2_eap_params(ssid="fils")
+    params['wpa_key_mgmt'] = key_mgmt + " PASN"
+    params['auth_server_port'] = "18128"
+    params['erp_domain'] = 'example.com'
+    params['fils_realm'] = 'example.com'
+    hapd = start_pasn_ap(apdev[0], params)
+
+    dev[0].scan_for_bss(bssid, freq=2412)
+    dev[0].request("ERP_FLUSH")
+
+    id = dev[0].connect("fils", key_mgmt=key_mgmt,
+                        eap="PSK", identity="psk.user@example.com",
+                        password_hex="0123456789abcdef0123456789abcdef",
+                        erp="1", scan_freq="2412")
+    pmksa = dev[0].get_pmksa(bssid)
+    if pmksa is None:
+        raise Exception("No PMKSA cache entry created")
+
+    hapd.wait_sta()
+    hwsim_utils.test_connectivity(dev[0], hapd)
+
+    dev[0].request("DISCONNECT")
+    dev[0].wait_disconnected()
+
+    check_pasn_akmp_cipher(dev[0], hapd, key_mgmt, "CCMP")
+
+@remote_compatible
+def test_pasn_fils_sha256_pmksa_cache(dev, apdev, params):
+    """PASN authentication with FILS-SHA256 with PMKSA caching"""
+    check_pasn_fils_pmksa_cache(dev, apdev, params, "FILS-SHA256")
+
+@remote_compatible
+def test_pasn_fils_sha384_pmksa_cache(dev, apdev, params):
+    """PASN authentication with FILS-SHA384 with PMKSA caching"""
+    check_pasn_fils_pmksa_cache(dev, apdev, params, "FILS-SHA384")
+
+@remote_compatible
+def test_pasn_sae_kdk(dev, apdev):
+    """Station authentication with SAE AP with KDK derivation during connection"""
+    check_pasn_capab(dev[0])
+    check_sae_capab(dev[0])
+
+    try:
+        params = hostapd.wpa2_params(ssid="test-sae",
+                                     passphrase="12345678")
+        params['wpa_key_mgmt'] = 'SAE PASN'
+        params['force_kdk_derivation'] = "1"
+        hapd = start_pasn_ap(apdev[0], params)
+
+        dev[0].set("force_kdk_derivation", "1")
+        dev[0].connect("test-sae", psk="12345678", key_mgmt="SAE",
+                       scan_freq="2412")
+
+        check_pasn_ptk(dev[0], hapd, "CCMP")
+    finally:
+        dev[0].set("force_kdk_derivation", "0")
+
+
+def check_pasn_fils_kdk(dev, apdev, params, key_mgmt):
+    check_fils_capa(dev[0])
+    check_erp_capa(dev[0])
+    check_pasn_capab(dev[0])
+
+    start_erp_as(msk_dump=os.path.join(params['logdir'], "msk.lst"))
+
+    try:
+        bssid = apdev[0]['bssid']
+        params = hostapd.wpa2_eap_params(ssid="fils")
+        params['wpa_key_mgmt'] = key_mgmt
+        params['auth_server_port'] = "18128"
+        params['erp_domain'] = 'example.com'
+        params['fils_realm'] = 'example.com'
+        params['disable_pmksa_caching'] = '1'
+        params['force_kdk_derivation'] = "1"
+        hapd = start_pasn_ap(apdev[0], params)
+
+        dev[0].scan_for_bss(bssid, freq=2412)
+        dev[0].request("ERP_FLUSH")
+        dev[0].set("force_kdk_derivation", "1")
+
+        id = dev[0].connect("fils", key_mgmt=key_mgmt,
+                            eap="PSK", identity="psk.user@example.com",
+                            password_hex="0123456789abcdef0123456789abcdef",
+                            erp="1", scan_freq="2412")
+
+        hapd.wait_sta()
+        hwsim_utils.test_connectivity(dev[0], hapd)
+
+        check_pasn_ptk(dev[0], hapd, "CCMP")
+
+        dev[0].request("DISCONNECT")
+        dev[0].wait_disconnected()
+
+        dev[0].dump_monitor()
+        dev[0].select_network(id, freq=2412)
+        ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
+                                "EVENT-ASSOC-REJECT",
+                                "CTRL-EVENT-CONNECTED"], timeout=10)
+        if ev is None:
+            raise Exception("Connection using FILS/ERP timed out")
+        if "CTRL-EVENT-EAP-STARTED" in ev:
+            raise Exception("Unexpected EAP exchange")
+        if "EVENT-ASSOC-REJECT" in ev:
+            raise Exception("Association failed")
+
+        hapd.wait_sta()
+        hwsim_utils.test_connectivity(dev[0], hapd)
+
+        check_pasn_ptk(dev[0], hapd, "CCMP")
+    finally:
+        dev[0].set("force_kdk_derivation", "0")
+
+@remote_compatible
+def test_pasn_fils_sha256_kdk(dev, apdev, params):
+    """Station authentication with FILS-SHA256 with KDK derivation during connection"""
+    check_pasn_fils_kdk(dev, apdev, params, "FILS-SHA256")
+
+@remote_compatible
+def test_pasn_fils_sha384_kdk(dev, apdev, params):
+    """Station authentication with FILS-SHA384 with KDK derivation during connection"""
+    check_pasn_fils_kdk(dev, apdev, params, "FILS-SHA384")

tests/hwsim/wpasupplicant.py

@@ -1628,3 +1628,21 @@ class WpaSupplicant:
         res = self.request("DPP_CONFIGURATOR_REMOVE %d" % conf_id)
         if "OK" not in res:
             raise Exception("DPP_CONFIGURATOR_REMOVE failed")
+
+    def get_ptksa(self, bssid, cipher):
+        res = self.request("PTKSA_CACHE_LIST")
+        lines = res.splitlines()
+        for l in lines:
+            if bssid not in l or cipher not in l:
+                continue
+
+            vals = dict()
+            [index, addr, cipher, expiration, tk, kdk] = l.split(' ', 5)
+            vals['index'] = index
+            vals['addr'] = addr
+            vals['cipher'] = cipher
+            vals['expiration'] = expiration
+            vals['tk'] = tk
+            vals['kdk'] = kdk
+            return vals
+        return None