AP: Add support for configuring PASN

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

hostapd/Android.mk

@@ -565,6 +565,14 @@ L_CFLAGS += -DCONFIG_DPP2
 endif
 endif
 
+ifdef CONFIG_PASN
+L_CFLAGS += -DCONFIG_PASN
+NEED_HMAC_SHA256_KDF=y
+NEED_HMAC_SHA384_KDF=y
+NEED_SHA256=y
+NEED_SHA384=y
+endif
+
 ifdef CONFIG_EAP_IKEV2
 L_CFLAGS += -DEAP_SERVER_IKEV2
 OBJS += src/eap_server/eap_server_ikev2.c src/eap_server/ikev2.c

hostapd/Makefile

@@ -595,6 +595,14 @@ CFLAGS += -DCONFIG_DPP2
 endif
 endif
 
+ifdef CONFIG_PASN
+CFLAGS += -DCONFIG_PASN
+NEED_HMAC_SHA256_KDF=y
+NEED_HMAC_SHA384_KDF=y
+NEED_SHA256=y
+NEED_SHA384=y
+endif
+
 ifdef CONFIG_EAP_IKEV2
 CFLAGS += -DEAP_SERVER_IKEV2
 OBJS += ../src/eap_server/eap_server_ikev2.o ../src/eap_server/ikev2.o

hostapd/config_file.c

@@ -754,6 +754,10 @@ static int hostapd_config_parse_key_mgmt(int line, const char *value)
 		else if (os_strcmp(start, "OSEN") == 0)
 			val |= WPA_KEY_MGMT_OSEN;
 #endif /* CONFIG_HS20 */
+#ifdef CONFIG_PASN
+		else if (os_strcmp(start, "PASN") == 0)
+			val |= WPA_KEY_MGMT_PASN;
+#endif /* CONFIG_PASN */
 		else {
 			wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
 				   line, start);
@@ -4582,6 +4586,13 @@ static int hostapd_config_fill(struct hostapd_config *conf,
 	} else if (os_strcmp(buf, "force_kdk_derivation") == 0) {
 		bss->force_kdk_derivation = atoi(pos);
 #endif /* CONFIG_TESTING_OPTIONS */
+	} else if (os_strcmp(buf, "pasn_groups") == 0) {
+		if (hostapd_parse_intlist(&bss->pasn_groups, pos)) {
+			wpa_printf(MSG_ERROR,
+				   "Line %d: Invalid pasn_groups value '%s'",
+				   line, pos);
+			return 1;
+		}
 #endif /* CONFIG_PASN */
 	} else {
 		wpa_printf(MSG_ERROR,

hostapd/defconfig

@@ -395,3 +395,10 @@ CONFIG_IPV6=y
 # build includes this to allow mixed mode WPA+WPA2 networks to be enabled, but
 # that functionality is subject to be removed in the future.
 #CONFIG_NO_TKIP=y
+
+# Pre-Association Security Negotiation (PASN)
+# Experimental implementation based on IEEE P802.11z/D2.6 and the protocol
+# design is still subject to change. As such, this should not yet be enabled in
+# production use.
+# This requires CONFIG_IEEE80211W=y to be enabled, too.
+#CONFIG_PASN=y

hostapd/hostapd.conf

@@ -1947,6 +1947,14 @@ own_ip_addr=127.0.0.1
 # (default: 0 = do not include Transition Disable KDE)
 #transition_disable=0x01
 
+# PASN ECDH groups
+# PASN implementations are required to support group 19 (NIST P-256). If this
+# parameter is not set, only group 19 is supported by default. This
+# configuration parameter can be used to specify a limited set of allowed
+# groups. The group values are listed in the IANA registry:
+# http://www.iana.org/assignments/ipsec-registry/ipsec-registry.xml#ipsec-registry-10
+#pasn_groups=19 20 21
+
 ##### IEEE 802.11r configuration ##############################################
 
 # Mobility Domain identifier (dot11FTMobilityDomainID, MDID)

src/ap/ap_config.c

@@ -955,6 +955,10 @@ void hostapd_config_free_bss(struct hostapd_bss_config *conf)
 	}
 #endif /* CONFIG_AIRTIME_POLICY */
 
+#ifdef CONFIG_PASN
+	os_free(conf->pasn_groups);
+#endif /* CONFIG_PASN */
+
 	os_free(conf);
 }
 

src/ap/ap_config.h

@@ -871,6 +871,8 @@ struct hostapd_bss_config {
 	 */
 	int force_kdk_derivation;
 #endif /* CONFIG_TESTING_OPTIONS */
+
+	int *pasn_groups;
 #endif /* CONFIG_PASN */
 };
 

src/ap/wpa_auth_ie.c

@@ -260,6 +260,13 @@ int wpa_write_rsn_ie(struct wpa_auth_config *conf, u8 *buf, size_t len,
 		num_suites++;
 	}
 #endif /* CONFIG_HS20 */
+#ifdef CONFIG_PASN
+	if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PASN) {
+		RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PASN);
+		pos += RSN_SELECTOR_LEN;
+		num_suites++;
+	}
+#endif /* CONFIG_PASN */
 
 #ifdef CONFIG_RSN_TESTING
 	if (rsn_testing) {