diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index 9bce6c6e8..d3bda1800 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -1147,7 +1147,17 @@ typedef enum wpa_event_type {
 	 * FT authentication sequence from the AP. The FT IEs are included in
 	 * the extra information in union wpa_event_data::ft_ies.
 	 */
-	EVENT_FT_RESPONSE
+	EVENT_FT_RESPONSE,
+
+	/**
+	 * EVENT_IBSS_RSN_START - Request RSN authentication in IBSS
+	 *
+	 * The driver can use this event to inform wpa_supplicant about a STA
+	 * in an IBSS with which protected frames could be exchanged. This
+	 * event starts RSN authentication with the other STA to authenticate
+	 * the STA and set up encryption keys with it.
+	 */
+	EVENT_IBSS_RSN_START
 } wpa_event_type;
 
 
@@ -1274,6 +1284,13 @@ union wpa_event_data {
 		int ft_action;
 		u8 target_ap[ETH_ALEN];
 	} ft_ies;
+
+	/**
+	 * struct ibss_rsn_start - Data for EVENT_IBSS_RSN_START
+	 */
+	struct ibss_rsn_start {
+		u8 peer[ETH_ALEN];
+	} ibss_rsn_start;
 };
 
 /**
diff --git a/wpa_supplicant/Makefile b/wpa_supplicant/Makefile
index c5a8132ce..65adf5344 100644
--- a/wpa_supplicant/Makefile
+++ b/wpa_supplicant/Makefile
@@ -941,6 +941,21 @@ else
 CFLAGS += -DCONFIG_NO_WPA -DCONFIG_NO_WPA2
 endif
 
+ifdef CONFIG_IBSS_RSN
+CFLAGS += -DCONFIG_IBSS_RSN
+OBJS += ibss_rsn.o
+OBJS += ../hostapd/wpa.o
+OBJS += ../hostapd/wpa_auth_ie.o
+OBJS += ../hostapd/pmksa_cache.o
+OBJS += ../src/radius/radius.o
+ifdef CONFIG_IEEE80211R
+OBJS += ../hostapd/wpa_ft.o
+endif
+ifdef CONFIG_PEERKEY
+OBJS += ../hostapd/peerkey.o
+endif
+endif
+
 ifdef CONFIG_NO_WPA2
 CFLAGS += -DCONFIG_NO_WPA2
 endif
diff --git a/wpa_supplicant/ctrl_iface.c b/wpa_supplicant/ctrl_iface.c
index d627dc654..7bb871a97 100644
--- a/wpa_supplicant/ctrl_iface.c
+++ b/wpa_supplicant/ctrl_iface.c
@@ -29,6 +29,7 @@
 #include "ieee802_11_defs.h"
 #include "wps_supplicant.h"
 #include "wps/wps.h"
+#include "ibss_rsn.h"
 
 static int wpa_supplicant_global_iface_list(struct wpa_global *global,
 					    char *buf, int len);
@@ -227,6 +228,26 @@ static int wpa_supplicant_ctrl_iface_wps_reg(struct wpa_supplicant *wpa_s,
 #endif /* CONFIG_WPS */
 
 
+#ifdef CONFIG_IBSS_RSN
+static int wpa_supplicant_ctrl_iface_ibss_rsn(
+	struct wpa_supplicant *wpa_s, char *addr)
+{
+	u8 peer[ETH_ALEN];
+
+	if (hwaddr_aton(addr, peer)) {
+		wpa_printf(MSG_DEBUG, "CTRL_IFACE IBSS_RSN: invalid "
+			   "address '%s'", peer);
+		return -1;
+	}
+
+	wpa_printf(MSG_DEBUG, "CTRL_IFACE IBSS_RSN " MACSTR,
+		   MAC2STR(peer));
+
+	return ibss_rsn_start(wpa_s->ibss_rsn, peer);
+}
+#endif /* CONFIG_IBSS_RSN */
+
+
 static int wpa_supplicant_ctrl_iface_ctrl_rsp(struct wpa_supplicant *wpa_s,
 					      char *rsp)
 {
@@ -1566,6 +1587,11 @@ char * wpa_supplicant_ctrl_iface_process(struct wpa_supplicant *wpa_s,
 		if (wpa_supplicant_ctrl_iface_wps_reg(wpa_s, buf + 8))
 			reply_len = -1;
 #endif /* CONFIG_WPS */
+#ifdef CONFIG_IBSS_RSN
+	} else if (os_strncmp(buf, "IBSS_RSN ", 9) == 0) {
+		if (wpa_supplicant_ctrl_iface_ibss_rsn(wpa_s, buf + 9))
+			reply_len = -1;
+#endif /* CONFIG_IBSS_RSN */
 	} else if (os_strncmp(buf, WPA_CTRL_RSP, os_strlen(WPA_CTRL_RSP)) == 0)
 	{
 		if (wpa_supplicant_ctrl_iface_ctrl_rsp(
diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index 32b87e987..e169949d9 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -32,6 +32,7 @@
 #include "blacklist.h"
 #include "wpas_glue.h"
 #include "wps_supplicant.h"
+#include "ibss_rsn.h"
 
 
 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
@@ -1067,6 +1068,17 @@ wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
 #endif /* CONFIG_IEEE80211R */
 
 
+#ifdef CONFIG_IBSS_RSN
+static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
+						union wpa_event_data *data)
+{
+	if (data == NULL)
+		return;
+	ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
+}
+#endif /* CONFIG_IBSS_RSN */
+
+
 void wpa_supplicant_event(void *ctx, wpa_event_type event,
 			  union wpa_event_data *data)
 {
@@ -1106,6 +1118,11 @@ void wpa_supplicant_event(void *ctx, wpa_event_type event,
 		wpa_supplicant_event_ft_response(wpa_s, data);
 		break;
 #endif /* CONFIG_IEEE80211R */
+#ifdef CONFIG_IBSS_RSN
+	case EVENT_IBSS_RSN_START:
+		wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
+		break;
+#endif /* CONFIG_IBSS_RSN */
 	default:
 		wpa_printf(MSG_INFO, "Unknown event %d", event);
 		break;
diff --git a/wpa_supplicant/ibss_rsn.c b/wpa_supplicant/ibss_rsn.c
new file mode 100644
index 000000000..691a84e83
--- /dev/null
+++ b/wpa_supplicant/ibss_rsn.c
@@ -0,0 +1,319 @@
+/*
+ * wpa_supplicant - IBSS RSN
+ * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "wpa_supplicant_i.h"
+#include "wpa.h"
+#include "wpa_ie.h"
+#include "../hostapd/wpa.h"
+#include "ibss_rsn.h"
+
+
+static void ibss_rsn_free(struct ibss_rsn_peer *peer)
+{
+	wpa_auth_sta_deinit(peer->auth);
+	wpa_sm_deinit(peer->supp);
+	os_free(peer);
+}
+
+
+static int supp_ether_send(void *ctx, const u8 *dest, u16 proto, const u8 *buf,
+			   size_t len)
+{
+	/* struct ibss_rsn_peer *peer = ctx; */
+
+	wpa_printf(MSG_DEBUG, "SUPP: %s(dest=" MACSTR " proto=0x%04x "
+		   "len=%lu)",
+		   __func__, MAC2STR(dest), proto, (unsigned long) len);
+
+	/* TODO: send EAPOL frame */
+
+	return 0;
+}
+
+
+static u8 * supp_alloc_eapol(void *ctx, u8 type, const void *data,
+			     u16 data_len, size_t *msg_len, void **data_pos)
+{
+	struct ieee802_1x_hdr *hdr;
+
+	wpa_printf(MSG_DEBUG, "SUPP: %s(type=%d data_len=%d)",
+		   __func__, type, data_len);
+
+	*msg_len = sizeof(*hdr) + data_len;
+	hdr = os_malloc(*msg_len);
+	if (hdr == NULL)
+		return NULL;
+
+	hdr->version = 2;
+	hdr->type = type;
+	hdr->length = host_to_be16(data_len);
+
+	if (data)
+		os_memcpy(hdr + 1, data, data_len);
+	else
+		os_memset(hdr + 1, 0, data_len);
+
+	if (data_pos)
+		*data_pos = hdr + 1;
+
+	return (u8 *) hdr;
+}
+
+
+static int supp_get_beacon_ie(void *ctx)
+{
+	wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
+	/* TODO */
+	return -1;
+}
+
+
+static int supp_set_key(void *ctx, wpa_alg alg,
+			const u8 *addr, int key_idx, int set_tx,
+			const u8 *seq, size_t seq_len,
+			const u8 *key, size_t key_len)
+{
+	wpa_printf(MSG_DEBUG, "SUPP: %s(alg=%d addr=" MACSTR " key_idx=%d "
+		   "set_tx=%d)",
+		   __func__, alg, MAC2STR(addr), key_idx, set_tx);
+	wpa_hexdump(MSG_DEBUG, "SUPP: set_key - seq", seq, seq_len);
+	wpa_hexdump(MSG_DEBUG, "SUPP: set_key - key", key, key_len);
+	return 0;
+}
+
+
+static int supp_mlme_setprotection(void *ctx, const u8 *addr,
+				   int protection_type, int key_type)
+{
+	wpa_printf(MSG_DEBUG, "SUPP: %s(addr=" MACSTR " protection_type=%d "
+		   "key_type=%d)",
+		   __func__, MAC2STR(addr), protection_type, key_type);
+	return 0;
+}
+
+
+static void supp_cancel_auth_timeout(void *ctx)
+{
+	wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
+}
+
+
+int ibss_rsn_supp_init(struct ibss_rsn_peer *peer, const u8 *own_addr,
+		       const u8 *psk)
+{
+	struct wpa_sm_ctx *ctx = os_zalloc(sizeof(*ctx));
+	if (ctx == NULL)
+		return -1;
+
+	ctx->ctx = peer;
+	ctx->ether_send = supp_ether_send;
+	ctx->get_beacon_ie = supp_get_beacon_ie;
+	ctx->alloc_eapol = supp_alloc_eapol;
+	ctx->set_key = supp_set_key;
+	ctx->mlme_setprotection = supp_mlme_setprotection;
+	ctx->cancel_auth_timeout = supp_cancel_auth_timeout;
+	peer->supp = wpa_sm_init(ctx);
+	if (peer->supp == NULL) {
+		wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_init() failed");
+		return -1;
+	}
+
+	wpa_sm_set_own_addr(peer->supp, own_addr);
+	wpa_sm_set_param(peer->supp, WPA_PARAM_RSN_ENABLED, 1);
+	wpa_sm_set_param(peer->supp, WPA_PARAM_PROTO, WPA_PROTO_RSN);
+	wpa_sm_set_param(peer->supp, WPA_PARAM_PAIRWISE, WPA_CIPHER_CCMP);
+	wpa_sm_set_param(peer->supp, WPA_PARAM_GROUP, WPA_CIPHER_CCMP);
+	wpa_sm_set_param(peer->supp, WPA_PARAM_KEY_MGMT, WPA_KEY_MGMT_PSK);
+	wpa_sm_set_pmk(peer->supp, psk, PMK_LEN);
+
+#if 0 /* TODO? */
+	peer->supp_ie_len = sizeof(peer->supp_ie);
+	if (wpa_sm_set_assoc_wpa_ie_default(peer->supp, peer->supp_ie,
+					    &peer->supp_ie_len) < 0) {
+		wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_set_assoc_wpa_ie_default()"
+			   " failed");
+		return -1;
+	}
+#endif
+
+	wpa_sm_notify_assoc(peer->supp, peer->addr);
+
+	return 0;
+}
+
+
+static void auth_logger(void *ctx, const u8 *addr, logger_level level,
+			const char *txt)
+{
+	if (addr)
+		wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " - %s",
+			   MAC2STR(addr), txt);
+	else
+		wpa_printf(MSG_DEBUG, "AUTH: %s", txt);
+}
+
+
+static const u8 * auth_get_psk(void *ctx, const u8 *addr, const u8 *prev_psk)
+{
+	struct ibss_rsn *ibss_rsn = ctx;
+	wpa_printf(MSG_DEBUG, "AUTH: %s (addr=" MACSTR " prev_psk=%p)",
+		   __func__, MAC2STR(addr), prev_psk);
+	if (prev_psk)
+		return NULL;
+	return ibss_rsn->psk;
+}
+
+
+static int auth_send_eapol(void *ctx, const u8 *addr, const u8 *data,
+			   size_t data_len, int encrypt)
+{
+	/* struct ibss_rsn *ibss_rsn = ctx; */
+
+	wpa_printf(MSG_DEBUG, "AUTH: %s(addr=" MACSTR " data_len=%lu "
+		   "encrypt=%d)",
+		   __func__, MAC2STR(addr), (unsigned long) data_len, encrypt);
+
+	/* TODO: send EAPOL frame */
+
+	return 0;
+}
+
+
+static int ibss_rsn_auth_init_group(struct ibss_rsn *ibss_rsn,
+				    const u8 *own_addr)
+{
+	struct wpa_auth_config conf;
+	struct wpa_auth_callbacks cb;
+
+	wpa_printf(MSG_DEBUG, "AUTH: Initializing group state machine");
+
+	os_memset(&conf, 0, sizeof(conf));
+	conf.wpa = 2;
+	conf.wpa_key_mgmt = WPA_KEY_MGMT_PSK;
+	conf.wpa_pairwise = WPA_CIPHER_CCMP;
+	conf.rsn_pairwise = WPA_CIPHER_CCMP;
+	conf.wpa_group = WPA_CIPHER_CCMP;
+	conf.eapol_version = 2;
+
+	os_memset(&cb, 0, sizeof(cb));
+	cb.ctx = ibss_rsn;
+	cb.logger = auth_logger;
+	cb.send_eapol = auth_send_eapol;
+	cb.get_psk = auth_get_psk;
+
+	ibss_rsn->auth_group = wpa_init(own_addr, &conf, &cb);
+	if (ibss_rsn->auth_group == NULL) {
+		wpa_printf(MSG_DEBUG, "AUTH: wpa_init() failed");
+		return -1;
+	}
+
+	return 0;
+}
+
+
+static int ibss_rsn_auth_init(struct ibss_rsn *ibss_rsn,
+			      struct ibss_rsn_peer *peer)
+{
+	peer->auth = wpa_auth_sta_init(ibss_rsn->auth_group, peer->addr);
+	if (peer->auth == NULL) {
+		wpa_printf(MSG_DEBUG, "AUTH: wpa_auth_sta_init() failed");
+		return -1;
+	}
+
+#if 0 /* TODO: get peer RSN IE with Probe Request */
+	if (wpa_validate_wpa_ie(ibss_rsn->auth_group, peer->auth, PEER_IE,
+				PEER_IE_LEN, NULL, 0) != WPA_IE_OK) {
+		wpa_printf(MSG_DEBUG, "AUTH: wpa_validate_wpa_ie() failed");
+		return -1;
+	}
+#endif
+
+	wpa_auth_sm_event(peer->auth, WPA_ASSOC);
+
+	wpa_auth_sta_associated(ibss_rsn->auth_group, peer->auth);
+
+	return 0;
+}
+
+
+int ibss_rsn_start(struct ibss_rsn *ibss_rsn, const u8 *addr)
+{
+	struct ibss_rsn_peer *peer;
+
+	wpa_printf(MSG_DEBUG, "RSN: Starting IBSS Authenticator and "
+		   "Supplicant for peer " MACSTR, MAC2STR(addr));
+
+	peer = os_zalloc(sizeof(*peer));
+	if (peer == NULL)
+		return -1;
+
+	os_memcpy(peer->addr, addr, ETH_ALEN);
+
+	if (ibss_rsn_supp_init(peer, ibss_rsn->wpa_s->own_addr, ibss_rsn->psk)
+	    < 0) {
+		ibss_rsn_free(peer);
+		return -1;
+	}
+
+	if (ibss_rsn_auth_init(ibss_rsn, peer) < 0) {
+		ibss_rsn_free(peer);
+		return -1;
+	}
+
+	peer->next = ibss_rsn->peers;
+	ibss_rsn->peers = peer;
+
+	return 0;
+}
+
+
+struct ibss_rsn * ibss_rsn_init(struct wpa_supplicant *wpa_s)
+{
+	struct ibss_rsn *ibss_rsn;
+
+	ibss_rsn = os_zalloc(sizeof(*ibss_rsn));
+	if (ibss_rsn == NULL)
+		return NULL;
+	ibss_rsn->wpa_s = wpa_s;
+
+	if (ibss_rsn_auth_init_group(ibss_rsn, wpa_s->own_addr) < 0) {
+		ibss_rsn_deinit(ibss_rsn);
+		return NULL;
+	}
+
+	return ibss_rsn;
+}
+
+
+void ibss_rsn_deinit(struct ibss_rsn *ibss_rsn)
+{
+	struct ibss_rsn_peer *peer, *prev;
+
+	if (ibss_rsn == NULL)
+		return;
+
+	peer = ibss_rsn->peers;
+	while (peer) {
+		prev = peer;
+		peer = peer->next;
+		ibss_rsn_free(prev);
+	}
+
+	wpa_deinit(ibss_rsn->auth_group);
+	os_free(ibss_rsn);
+
+}
diff --git a/wpa_supplicant/ibss_rsn.h b/wpa_supplicant/ibss_rsn.h
new file mode 100644
index 000000000..d301907e9
--- /dev/null
+++ b/wpa_supplicant/ibss_rsn.h
@@ -0,0 +1,40 @@
+/*
+ * wpa_supplicant - IBSS RSN
+ * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#ifndef IBSS_RSN_H
+#define IBSS_RSN_H
+
+struct ibss_rsn_peer {
+	struct ibss_rsn_peer *next;
+
+	u8 addr[ETH_ALEN];
+
+	struct wpa_sm *supp;
+
+	struct wpa_state_machine *auth;
+};
+
+struct ibss_rsn {
+	struct wpa_supplicant *wpa_s;
+	struct wpa_authenticator *auth_group;
+	struct ibss_rsn_peer *peers;
+	u8 psk[PMK_LEN];
+};
+
+
+struct ibss_rsn * ibss_rsn_init(struct wpa_supplicant *wpa_s);
+void ibss_rsn_deinit(struct ibss_rsn *ibss_rsn);
+int ibss_rsn_start(struct ibss_rsn *ibss_rsn, const u8 *addr);
+
+#endif /* IBSS_RSN_H */
diff --git a/wpa_supplicant/wpa_cli.c b/wpa_supplicant/wpa_cli.c
index c49b67401..791155d33 100644
--- a/wpa_supplicant/wpa_cli.c
+++ b/wpa_supplicant/wpa_cli.c
@@ -465,6 +465,26 @@ static int wpa_cli_cmd_wps_reg(struct wpa_ctrl *ctrl, int argc, char *argv[])
 }
 
 
+static int wpa_cli_cmd_ibss_rsn(struct wpa_ctrl *ctrl, int argc, char *argv[])
+{
+	char cmd[256];
+	int res;
+
+	if (argc != 1) {
+		printf("Invalid IBSS_RSN command: needs one argument "
+		       "(Peer STA MAC address)\n");
+		return -1;
+	}
+
+	res = os_snprintf(cmd, sizeof(cmd), "IBSS_RSN %s", argv[0]);
+	if (res < 0 || (size_t) res >= sizeof(cmd) - 1) {
+		printf("Too long IBSS_RSN command.\n");
+		return -1;
+	}
+	return wpa_ctrl_command(ctrl, cmd);
+}
+
+
 static int wpa_cli_cmd_level(struct wpa_ctrl *ctrl, int argc, char *argv[])
 {
 	char cmd[256];
@@ -1239,6 +1259,9 @@ static struct wpa_cli_cmd wpa_cli_commands[] = {
 	{ "wps_reg", wpa_cli_cmd_wps_reg,
 	  cli_cmd_flag_sensitive,
 	  "<BSSID> <AP PIN> = start WPS Registrar to configure an AP" },
+	{ "ibss_rsn", wpa_cli_cmd_ibss_rsn,
+	  cli_cmd_flag_none,
+	  "<addr> = request RSN authentication with <addr> in IBSS" },
 	{ NULL, NULL, cli_cmd_flag_none, NULL }
 };
 
diff --git a/wpa_supplicant/wpa_supplicant.c b/wpa_supplicant/wpa_supplicant.c
index d2c45525e..71daf8d32 100644
--- a/wpa_supplicant/wpa_supplicant.c
+++ b/wpa_supplicant/wpa_supplicant.c
@@ -39,6 +39,7 @@
 #include "blacklist.h"
 #include "wpas_glue.h"
 #include "wps_supplicant.h"
+#include "ibss_rsn.h"
 
 const char *wpa_supplicant_version =
 "wpa_supplicant v" VERSION_STR "\n"
@@ -385,6 +386,11 @@ static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
 	ieee80211_sta_deinit(wpa_s);
 
 	wpas_wps_deinit(wpa_s);
+
+#ifdef CONFIG_IBSS_RSN
+	ibss_rsn_deinit(wpa_s->ibss_rsn);
+	wpa_s->ibss_rsn = NULL;
+#endif /* CONFIG_IBSS_RSN */
 }
 
 
@@ -1859,6 +1865,14 @@ static int wpa_supplicant_init_iface2(struct wpa_supplicant *wpa_s)
 			wpa_s->driver_4way_handshake = 1;
 	}
 
+#ifdef CONFIG_IBSS_RSN
+	wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
+	if (!wpa_s->ibss_rsn) {
+		wpa_printf(MSG_DEBUG, "Failed to init IBSS RSN");
+		return -1;
+	}
+#endif /* CONFIG_IBSS_RSN */
+
 	return 0;
 }
 
diff --git a/wpa_supplicant/wpa_supplicant_i.h b/wpa_supplicant/wpa_supplicant_i.h
index f39709faa..c629a7e10 100644
--- a/wpa_supplicant/wpa_supplicant_i.h
+++ b/wpa_supplicant/wpa_supplicant_i.h
@@ -33,6 +33,7 @@ extern struct wpa_driver_ops *wpa_supplicant_drivers[];
 struct wpa_scan_result;
 struct wpa_sm;
 struct wpa_supplicant;
+struct ibss_rsn;
 
 /*
  * Forward declarations of private structures used within the ctrl_iface
@@ -355,6 +356,8 @@ struct wpa_supplicant {
 	int mic_errors_seen; /* Michael MIC errors with the current PTK */
 
 	struct wps_context *wps;
+
+	struct ibss_rsn *ibss_rsn;
 };