2 * hostapd - IEEE 802.11r - Fast BSS Transition
3 * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
21 #include "ieee802_11.h"
23 #include "wpa_auth_i.h"
24 #include "wpa_auth_ie.h"
27 #ifdef CONFIG_IEEE80211R
29 static int wpa_ft_rrb_send(struct wpa_authenticator *wpa_auth, const u8 *dst,
30 const u8 *data, size_t data_len)
32 if (wpa_auth->cb.send_ether == NULL)
34 return wpa_auth->cb.send_ether(wpa_auth->cb.ctx, dst, ETH_P_RRB,
39 static int wpa_ft_action_send(struct wpa_authenticator *wpa_auth,
40 const u8 *dst, const u8 *data, size_t data_len)
42 if (wpa_auth->cb.send_ft_action == NULL)
44 return wpa_auth->cb.send_ft_action(wpa_auth->cb.ctx, dst,
49 static struct wpa_state_machine *
50 wpa_ft_add_sta(struct wpa_authenticator *wpa_auth, const u8 *sta_addr)
52 if (wpa_auth->cb.add_sta == NULL)
54 return wpa_auth->cb.add_sta(wpa_auth->cb.ctx, sta_addr);
58 int wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len)
62 if (len < 2 + sizeof(struct rsn_mdie))
65 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
66 *pos++ = MOBILITY_DOMAIN_ID_LEN + 1;
67 os_memcpy(pos, conf->mobility_domain, MOBILITY_DOMAIN_ID_LEN);
68 pos += MOBILITY_DOMAIN_ID_LEN;
69 capab = RSN_FT_CAPAB_FT_OVER_DS;
76 static int wpa_write_ftie(struct wpa_auth_config *conf, const u8 *r0kh_id,
78 const u8 *anonce, const u8 *snonce,
79 u8 *buf, size_t len, const u8 *subelem,
82 u8 *pos = buf, *ielen;
85 if (len < 2 + sizeof(*hdr) + 2 + FT_R1KH_ID_LEN + 2 + r0kh_id_len +
89 *pos++ = WLAN_EID_FAST_BSS_TRANSITION;
92 hdr = (struct rsn_ftie *) pos;
93 os_memset(hdr, 0, sizeof(*hdr));
95 WPA_PUT_LE16(hdr->mic_control, 0);
97 os_memcpy(hdr->anonce, anonce, WPA_NONCE_LEN);
99 os_memcpy(hdr->snonce, snonce, WPA_NONCE_LEN);
101 /* Optional Parameters */
102 *pos++ = FTIE_SUBELEM_R1KH_ID;
103 *pos++ = FT_R1KH_ID_LEN;
104 os_memcpy(pos, conf->r1_key_holder, FT_R1KH_ID_LEN);
105 pos += FT_R1KH_ID_LEN;
108 *pos++ = FTIE_SUBELEM_R0KH_ID;
109 *pos++ = r0kh_id_len;
110 os_memcpy(pos, r0kh_id, r0kh_id_len);
115 os_memcpy(pos, subelem, subelem_len);
119 *ielen = pos - buf - 2;
125 struct wpa_ft_pmk_r0_sa {
126 struct wpa_ft_pmk_r0_sa *next;
128 u8 pmk_r0_name[WPA_PMK_NAME_LEN];
130 /* TODO: expiration, identity, radius_class, EAP type, VLAN ID */
134 struct wpa_ft_pmk_r1_sa {
135 struct wpa_ft_pmk_r1_sa *next;
137 u8 pmk_r1_name[WPA_PMK_NAME_LEN];
139 /* TODO: expiration, identity, radius_class, EAP type, VLAN ID */
142 struct wpa_ft_pmk_cache {
143 struct wpa_ft_pmk_r0_sa *pmk_r0;
144 struct wpa_ft_pmk_r1_sa *pmk_r1;
147 struct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void)
149 struct wpa_ft_pmk_cache *cache;
151 cache = os_zalloc(sizeof(*cache));
157 void wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache)
159 struct wpa_ft_pmk_r0_sa *r0, *r0prev;
160 struct wpa_ft_pmk_r1_sa *r1, *r1prev;
166 os_memset(r0prev->pmk_r0, 0, PMK_LEN);
174 os_memset(r1prev->pmk_r1, 0, PMK_LEN);
182 static int wpa_ft_store_pmk_r0(struct wpa_authenticator *wpa_auth,
183 const u8 *spa, const u8 *pmk_r0,
184 const u8 *pmk_r0_name)
186 struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
187 struct wpa_ft_pmk_r0_sa *r0;
189 /* TODO: add expiration and limit on number of entries in cache */
191 r0 = os_zalloc(sizeof(*r0));
195 os_memcpy(r0->pmk_r0, pmk_r0, PMK_LEN);
196 os_memcpy(r0->pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN);
197 os_memcpy(r0->spa, spa, ETH_ALEN);
199 r0->next = cache->pmk_r0;
206 static int wpa_ft_fetch_pmk_r0(struct wpa_authenticator *wpa_auth,
207 const u8 *spa, const u8 *pmk_r0_name,
210 struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
211 struct wpa_ft_pmk_r0_sa *r0;
215 if (os_memcmp(r0->spa, spa, ETH_ALEN) == 0 &&
216 os_memcmp(r0->pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN)
218 os_memcpy(pmk_r0, r0->pmk_r0, PMK_LEN);
229 static int wpa_ft_store_pmk_r1(struct wpa_authenticator *wpa_auth,
230 const u8 *spa, const u8 *pmk_r1,
231 const u8 *pmk_r1_name)
233 struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
234 struct wpa_ft_pmk_r1_sa *r1;
236 /* TODO: add expiration and limit on number of entries in cache */
238 r1 = os_zalloc(sizeof(*r1));
242 os_memcpy(r1->pmk_r1, pmk_r1, PMK_LEN);
243 os_memcpy(r1->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN);
244 os_memcpy(r1->spa, spa, ETH_ALEN);
246 r1->next = cache->pmk_r1;
253 static int wpa_ft_fetch_pmk_r1(struct wpa_authenticator *wpa_auth,
254 const u8 *spa, const u8 *pmk_r1_name,
257 struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
258 struct wpa_ft_pmk_r1_sa *r1;
262 if (os_memcmp(r1->spa, spa, ETH_ALEN) == 0 &&
263 os_memcmp(r1->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN)
265 os_memcpy(pmk_r1, r1->pmk_r1, PMK_LEN);
276 static int wpa_ft_pull_pmk_r1(struct wpa_authenticator *wpa_auth,
277 const u8 *s1kh_id, const u8 *r0kh_id,
278 size_t r0kh_id_len, const u8 *pmk_r0_name)
280 struct ft_remote_r0kh *r0kh;
281 struct ft_r0kh_r1kh_pull_frame frame, f;
283 r0kh = wpa_auth->conf.r0kh_list;
285 if (r0kh->id_len == r0kh_id_len &&
286 os_memcmp(r0kh->id, r0kh_id, r0kh_id_len) == 0)
293 wpa_printf(MSG_DEBUG, "FT: Send PMK-R1 pull request to remote R0KH "
294 "address " MACSTR, MAC2STR(r0kh->addr));
296 os_memset(&frame, 0, sizeof(frame));
297 frame.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
298 frame.packet_type = FT_PACKET_R0KH_R1KH_PULL;
299 frame.data_length = host_to_le16(FT_R0KH_R1KH_PULL_DATA_LEN);
300 os_memcpy(frame.ap_address, wpa_auth->addr, ETH_ALEN);
302 /* aes_wrap() does not support inplace encryption, so use a temporary
303 * buffer for the data. */
304 if (os_get_random(f.nonce, sizeof(f.nonce))) {
305 wpa_printf(MSG_DEBUG, "FT: Failed to get random data for "
309 os_memcpy(f.pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN);
310 os_memcpy(f.r1kh_id, wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN);
311 os_memcpy(f.s1kh_id, s1kh_id, ETH_ALEN);
313 if (aes_wrap(r0kh->key, (FT_R0KH_R1KH_PULL_DATA_LEN + 7) / 8,
314 f.nonce, frame.nonce) < 0)
317 wpa_ft_rrb_send(wpa_auth, r0kh->addr, (u8 *) &frame, sizeof(frame));
323 int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk,
326 u8 pmk_r0[PMK_LEN], pmk_r0_name[WPA_PMK_NAME_LEN];
327 u8 pmk_r1[PMK_LEN], pmk_r1_name[WPA_PMK_NAME_LEN];
328 u8 ptk_name[WPA_PMK_NAME_LEN];
329 const u8 *mdid = sm->wpa_auth->conf.mobility_domain;
330 const u8 *r0kh = sm->wpa_auth->conf.r0_key_holder;
331 size_t r0kh_len = sm->wpa_auth->conf.r0_key_holder_len;
332 const u8 *r1kh = sm->wpa_auth->conf.r1_key_holder;
333 const u8 *ssid = sm->wpa_auth->conf.ssid;
334 size_t ssid_len = sm->wpa_auth->conf.ssid_len;
337 if (sm->xxkey_len == 0) {
338 wpa_printf(MSG_DEBUG, "FT: XXKey not available for key "
343 wpa_derive_pmk_r0(sm->xxkey, sm->xxkey_len, ssid, ssid_len, mdid,
344 r0kh, r0kh_len, sm->addr, pmk_r0, pmk_r0_name);
345 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, PMK_LEN);
346 wpa_hexdump(MSG_DEBUG, "FT: PMKR0Name", pmk_r0_name, WPA_PMK_NAME_LEN);
347 wpa_ft_store_pmk_r0(sm->wpa_auth, sm->addr, pmk_r0, pmk_r0_name);
349 wpa_derive_pmk_r1(pmk_r0, pmk_r0_name, r1kh, sm->addr,
350 pmk_r1, pmk_r1_name);
351 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, PMK_LEN);
352 wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", pmk_r1_name, WPA_PMK_NAME_LEN);
353 wpa_ft_store_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1, pmk_r1_name);
355 wpa_pmk_r1_to_ptk(pmk_r1, sm->SNonce, sm->ANonce, sm->addr,
356 sm->wpa_auth->addr, pmk_r1_name,
357 (u8 *) ptk, sizeof(*ptk), ptk_name);
358 wpa_hexdump_key(MSG_DEBUG, "FT: PTK", (u8 *) ptk, sizeof(*ptk));
359 wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN);
365 static inline int wpa_auth_get_seqnum(struct wpa_authenticator *wpa_auth,
366 const u8 *addr, int idx, u8 *seq)
368 if (wpa_auth->cb.get_seqnum == NULL)
370 return wpa_auth->cb.get_seqnum(wpa_auth->cb.ctx, addr, idx, seq);
374 #ifdef CONFIG_IEEE80211W
375 static inline int wpa_auth_get_seqnum_igtk(struct wpa_authenticator *wpa_auth,
376 const u8 *addr, int idx, u8 *seq)
378 if (wpa_auth->cb.get_seqnum_igtk == NULL)
380 return wpa_auth->cb.get_seqnum_igtk(wpa_auth->cb.ctx, addr, idx, seq);
382 #endif /* CONFIG_IEEE80211W */
385 static u8 * wpa_ft_gtk_subelem(struct wpa_state_machine *sm, size_t *len)
388 struct wpa_group *gsm = sm->group;
389 size_t subelem_len, pad_len;
394 key_len = gsm->GTK_len;
395 if (key_len > sizeof(keybuf))
399 * Pad key for AES Key Wrap if it is not multiple of 8 bytes or is less
402 pad_len = key_len % 8;
404 pad_len = 8 - pad_len;
405 if (key_len + pad_len < 16)
408 os_memcpy(keybuf, gsm->GTK[gsm->GN - 1], key_len);
409 os_memset(keybuf + key_len, 0, pad_len);
410 keybuf[key_len] = 0xdd;
414 key = gsm->GTK[gsm->GN - 1];
417 * Sub-elem ID[1] | Length[1] | Key Info[1] | Key Length[1] | RSC[8] |
420 subelem_len = 12 + key_len + 8;
421 subelem = os_zalloc(subelem_len);
425 subelem[0] = FTIE_SUBELEM_GTK;
426 subelem[1] = 10 + key_len + 8;
427 subelem[2] = gsm->GN & 0x03; /* Key ID in B0-B1 of Key Info */
428 subelem[3] = gsm->GTK_len;
429 wpa_auth_get_seqnum(sm->wpa_auth, NULL, gsm->GN, subelem + 4);
430 if (aes_wrap(sm->PTK.kek, key_len / 8, key, subelem + 12)) {
440 #ifdef CONFIG_IEEE80211W
441 static u8 * wpa_ft_igtk_subelem(struct wpa_state_machine *sm, size_t *len)
444 struct wpa_group *gsm = sm->group;
447 /* Sub-elem ID[1] | Length[1] | KeyID[2] | PN[6] | Key[16+8] */
448 subelem_len = 1 + 1 + 2 + 6 + WPA_IGTK_LEN + 8;
449 subelem = os_zalloc(subelem_len);
454 *pos++ = FTIE_SUBELEM_IGTK;
455 *pos++ = subelem_len - 2;
456 WPA_PUT_LE16(pos, gsm->GN_igtk);
458 wpa_auth_get_seqnum_igtk(sm->wpa_auth, NULL, gsm->GN_igtk, pos);
460 if (aes_wrap(sm->PTK.kek, WPA_IGTK_LEN / 8,
461 gsm->IGTK[gsm->GN_igtk - 4], pos)) {
469 #endif /* CONFIG_IEEE80211W */
472 u8 * wpa_sm_write_assoc_resp_ies(struct wpa_state_machine *sm, u8 *pos,
473 size_t max_len, int auth_alg)
475 u8 *end, *mdie, *ftie, *rsnie, *r0kh_id, *subelem = NULL;
476 size_t mdie_len, ftie_len, rsnie_len, r0kh_id_len, subelem_len = 0;
478 struct wpa_auth_config *conf;
479 struct rsn_ftie *_ftie;
484 conf = &sm->wpa_auth->conf;
486 if (sm->wpa_key_mgmt != WPA_KEY_MGMT_FT_IEEE8021X &&
487 sm->wpa_key_mgmt != WPA_KEY_MGMT_FT_PSK)
493 res = wpa_write_rsn_ie(conf, pos, end - pos, sm->pmk_r1_name);
500 /* Mobility Domain Information */
501 res = wpa_write_mdie(conf, pos, end - pos);
508 /* Fast BSS Transition Information */
509 if (auth_alg == WLAN_AUTH_FT) {
510 subelem = wpa_ft_gtk_subelem(sm, &subelem_len);
511 r0kh_id = sm->r0kh_id;
512 r0kh_id_len = sm->r0kh_id_len;
513 #ifdef CONFIG_IEEE80211W
514 if (sm->mgmt_frame_prot) {
518 igtk = wpa_ft_igtk_subelem(sm, &igtk_len);
523 nbuf = os_realloc(subelem, subelem_len + igtk_len);
530 os_memcpy(subelem + subelem_len, igtk, igtk_len);
531 subelem_len += igtk_len;
534 #endif /* CONFIG_IEEE80211W */
536 r0kh_id = conf->r0_key_holder;
537 r0kh_id_len = conf->r0_key_holder_len;
539 res = wpa_write_ftie(conf, r0kh_id, r0kh_id_len, NULL, NULL, pos,
540 end - pos, subelem, subelem_len);
548 _ftie = (struct rsn_ftie *) (ftie + 2);
549 _ftie->mic_control[1] = 3; /* Information element count */
550 if (wpa_ft_mic(sm->PTK.kck, sm->addr, sm->wpa_auth->addr, 6,
551 mdie, mdie_len, ftie, ftie_len,
552 rsnie, rsnie_len, NULL, 0, _ftie->mic) < 0)
553 wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC");
575 static int wpa_ft_parse_ftie(const u8 *ie, size_t ie_len,
576 struct wpa_ft_ies *parse)
581 parse->ftie_len = ie_len;
583 pos = ie + sizeof(struct rsn_ftie);
586 while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
588 case FTIE_SUBELEM_R1KH_ID:
589 if (pos[1] != FT_R1KH_ID_LEN) {
590 wpa_printf(MSG_DEBUG, "FT: Invalid R1KH-ID "
591 "length in FTIE: %d", pos[1]);
594 parse->r1kh_id = pos + 2;
596 case FTIE_SUBELEM_GTK:
597 parse->gtk = pos + 2;
598 parse->gtk_len = pos[1];
600 case FTIE_SUBELEM_R0KH_ID:
601 if (pos[1] < 1 || pos[1] > FT_R0KH_ID_MAX_LEN) {
602 wpa_printf(MSG_DEBUG, "FT: Invalid R0KH-ID "
603 "length in FTIE: %d", pos[1]);
606 parse->r0kh_id = pos + 2;
607 parse->r0kh_id_len = pos[1];
618 static int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
619 struct wpa_ft_ies *parse)
622 struct wpa_ie_data data;
625 os_memset(parse, 0, sizeof(*parse));
631 while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
634 parse->rsn = pos + 2;
635 parse->rsn_len = pos[1];
636 ret = wpa_parse_wpa_ie_rsn(parse->rsn - 2,
640 wpa_printf(MSG_DEBUG, "FT: Failed to parse "
644 if (data.num_pmkid == 1 && data.pmkid)
645 parse->rsn_pmkid = data.pmkid;
647 case WLAN_EID_MOBILITY_DOMAIN:
648 parse->mdie = pos + 2;
649 parse->mdie_len = pos[1];
651 case WLAN_EID_FAST_BSS_TRANSITION:
652 if (wpa_ft_parse_ftie(pos + 2, pos[1], parse) < 0)
664 static inline int wpa_auth_set_key(struct wpa_authenticator *wpa_auth,
666 const char *alg, const u8 *addr, int idx,
667 u8 *key, size_t key_len)
669 if (wpa_auth->cb.set_key == NULL)
671 return wpa_auth->cb.set_key(wpa_auth->cb.ctx, vlan_id, alg, addr, idx,
676 static void wpa_ft_install_ptk(struct wpa_state_machine *sm)
681 /* MLME-SETKEYS.request(PTK) */
682 if (sm->pairwise == WPA_CIPHER_TKIP) {
685 } else if (sm->pairwise == WPA_CIPHER_CCMP) {
691 /* FIX: add STA entry to kernel/driver here? The set_key will fail
692 * most likely without this.. At the moment, STA entry is added only
693 * after association has been completed. Alternatively, could
694 * re-configure PTK at that point(?).
696 if (wpa_auth_set_key(sm->wpa_auth, 0, alg, sm->addr, 0,
700 /* FIX: MLME-SetProtection.Request(TA, Tx_Rx) */
701 sm->pairwise_set = TRUE;
705 static u16 wpa_ft_process_auth_req(struct wpa_state_machine *sm,
706 const u8 *ies, size_t ies_len,
707 u8 **resp_ies, size_t *resp_ies_len)
709 struct rsn_mdie *mdie;
710 struct rsn_ftie *ftie;
711 u8 pmk_r1[PMK_LEN], pmk_r1_name[WPA_PMK_NAME_LEN];
712 u8 ptk_name[WPA_PMK_NAME_LEN];
713 struct wpa_auth_config *conf;
714 struct wpa_ft_ies parse;
722 sm->pmk_r1_name_valid = 0;
723 conf = &sm->wpa_auth->conf;
725 wpa_hexdump(MSG_DEBUG, "FT: Received authentication frame IEs",
728 if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) {
729 wpa_printf(MSG_DEBUG, "FT: Failed to parse FT IEs");
730 return WLAN_STATUS_UNSPECIFIED_FAILURE;
733 mdie = (struct rsn_mdie *) parse.mdie;
734 if (mdie == NULL || parse.mdie_len < sizeof(*mdie) ||
735 os_memcmp(mdie->mobility_domain,
736 sm->wpa_auth->conf.mobility_domain,
737 MOBILITY_DOMAIN_ID_LEN) != 0) {
738 wpa_printf(MSG_DEBUG, "FT: Invalid MDIE");
739 return WLAN_STATUS_INVALID_MDIE;
742 ftie = (struct rsn_ftie *) parse.ftie;
743 if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) {
744 wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
745 return WLAN_STATUS_INVALID_FTIE;
748 os_memcpy(sm->SNonce, ftie->snonce, WPA_NONCE_LEN);
750 if (parse.r0kh_id == NULL) {
751 wpa_printf(MSG_DEBUG, "FT: Invalid FTIE - no R0KH-ID");
752 return WLAN_STATUS_INVALID_FTIE;
755 wpa_hexdump(MSG_DEBUG, "FT: STA R0KH-ID",
756 parse.r0kh_id, parse.r0kh_id_len);
757 os_memcpy(sm->r0kh_id, parse.r0kh_id, parse.r0kh_id_len);
758 sm->r0kh_id_len = parse.r0kh_id_len;
760 if (parse.rsn_pmkid == NULL) {
761 wpa_printf(MSG_DEBUG, "FT: No PMKID in RSNIE");
762 return WLAN_STATUS_INVALID_PMKID;
765 wpa_hexdump(MSG_DEBUG, "FT: Requested PMKR0Name",
766 parse.rsn_pmkid, WPA_PMK_NAME_LEN);
767 wpa_derive_pmk_r1_name(parse.rsn_pmkid,
768 sm->wpa_auth->conf.r1_key_holder, sm->addr,
770 wpa_hexdump(MSG_DEBUG, "FT: Derived requested PMKR1Name",
771 pmk_r1_name, WPA_PMK_NAME_LEN);
773 if (wpa_ft_fetch_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1_name, pmk_r1) <
775 if (wpa_ft_pull_pmk_r1(sm->wpa_auth, sm->addr, sm->r0kh_id,
776 sm->r0kh_id_len, parse.rsn_pmkid) < 0) {
777 wpa_printf(MSG_DEBUG, "FT: Did not have matching "
778 "PMK-R1 and unknown R0KH-ID");
779 return WLAN_STATUS_INVALID_PMKID;
783 * TODO: Should return "status pending" (and the caller should
784 * not send out response now). The real response will be sent
785 * once the response from R0KH is received.
787 return WLAN_STATUS_INVALID_PMKID;
790 wpa_hexdump_key(MSG_DEBUG, "FT: Selected PMK-R1", pmk_r1, PMK_LEN);
791 sm->pmk_r1_name_valid = 1;
792 os_memcpy(sm->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN);
794 if (os_get_random(sm->ANonce, WPA_NONCE_LEN)) {
795 wpa_printf(MSG_DEBUG, "FT: Failed to get random data for "
797 return WLAN_STATUS_UNSPECIFIED_FAILURE;
800 wpa_hexdump(MSG_DEBUG, "FT: Received SNonce",
801 sm->SNonce, WPA_NONCE_LEN);
802 wpa_hexdump(MSG_DEBUG, "FT: Generated ANonce",
803 sm->ANonce, WPA_NONCE_LEN);
805 wpa_pmk_r1_to_ptk(pmk_r1, sm->SNonce, sm->ANonce, sm->addr,
806 sm->wpa_auth->addr, pmk_r1_name,
807 (u8 *) &sm->PTK, sizeof(sm->PTK), ptk_name);
808 wpa_hexdump_key(MSG_DEBUG, "FT: PTK",
809 (u8 *) &sm->PTK, sizeof(sm->PTK));
810 wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN);
812 wpa_ft_install_ptk(sm);
814 buflen = 2 + sizeof(struct rsn_mdie) + 2 + sizeof(struct rsn_ftie) +
815 2 + FT_R1KH_ID_LEN + 200;
816 *resp_ies = os_zalloc(buflen);
817 if (*resp_ies == NULL) {
818 return WLAN_STATUS_UNSPECIFIED_FAILURE;
822 end = *resp_ies + buflen;
824 ret = wpa_write_rsn_ie(conf, pos, end - pos, parse.rsn_pmkid);
828 return WLAN_STATUS_UNSPECIFIED_FAILURE;
832 ret = wpa_write_mdie(conf, pos, end - pos);
836 return WLAN_STATUS_UNSPECIFIED_FAILURE;
840 ret = wpa_write_ftie(conf, parse.r0kh_id, parse.r0kh_id_len,
841 sm->ANonce, sm->SNonce, pos, end - pos, NULL, 0);
845 return WLAN_STATUS_UNSPECIFIED_FAILURE;
849 *resp_ies_len = pos - *resp_ies;
851 return WLAN_STATUS_SUCCESS;
855 void wpa_ft_process_auth(struct wpa_state_machine *sm, const u8 *bssid,
856 u16 auth_transaction, const u8 *ies, size_t ies_len,
857 void (*cb)(void *ctx, const u8 *dst, const u8 *bssid,
858 u16 auth_transaction, u16 status,
859 const u8 *ies, size_t ies_len),
867 wpa_printf(MSG_DEBUG, "FT: Received authentication frame, but "
868 "WPA SM not available");
872 wpa_printf(MSG_DEBUG, "FT: Received authentication frame: STA=" MACSTR
873 " BSSID=" MACSTR " transaction=%d",
874 MAC2STR(sm->addr), MAC2STR(bssid), auth_transaction);
875 status = wpa_ft_process_auth_req(sm, ies, ies_len, &resp_ies,
878 wpa_printf(MSG_DEBUG, "FT: FT authentication response: dst=" MACSTR
879 " auth_transaction=%d status=%d",
880 MAC2STR(sm->addr), auth_transaction + 1, status);
881 wpa_hexdump(MSG_DEBUG, "FT: Response IEs", resp_ies, resp_ies_len);
882 cb(ctx, sm->addr, bssid, auth_transaction + 1, status,
883 resp_ies, resp_ies_len);
888 u16 wpa_ft_validate_reassoc(struct wpa_state_machine *sm, const u8 *ies,
891 struct wpa_ft_ies parse;
892 struct rsn_mdie *mdie;
893 struct rsn_ftie *ftie;
897 return WLAN_STATUS_UNSPECIFIED_FAILURE;
899 wpa_hexdump(MSG_DEBUG, "FT: Reassoc Req IEs", ies, ies_len);
901 if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) {
902 wpa_printf(MSG_DEBUG, "FT: Failed to parse FT IEs");
903 return WLAN_STATUS_UNSPECIFIED_FAILURE;
906 if (parse.rsn == NULL) {
907 wpa_printf(MSG_DEBUG, "FT: No RSNIE in Reassoc Req");
908 return WLAN_STATUS_UNSPECIFIED_FAILURE;
911 if (parse.rsn_pmkid == NULL) {
912 wpa_printf(MSG_DEBUG, "FT: No PMKID in RSNIE");
913 return WLAN_STATUS_INVALID_PMKID;
916 if (os_memcmp(parse.rsn_pmkid, sm->pmk_r1_name, WPA_PMK_NAME_LEN) != 0)
918 wpa_printf(MSG_DEBUG, "FT: PMKID in Reassoc Req did not match "
919 "with the PMKR1Name derived from auth request");
920 return WLAN_STATUS_INVALID_PMKID;
923 mdie = (struct rsn_mdie *) parse.mdie;
924 if (mdie == NULL || parse.mdie_len < sizeof(*mdie) ||
925 os_memcmp(mdie->mobility_domain,
926 sm->wpa_auth->conf.mobility_domain,
927 MOBILITY_DOMAIN_ID_LEN) != 0) {
928 wpa_printf(MSG_DEBUG, "FT: Invalid MDIE");
929 return WLAN_STATUS_INVALID_MDIE;
932 ftie = (struct rsn_ftie *) parse.ftie;
933 if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) {
934 wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
935 return WLAN_STATUS_INVALID_FTIE;
939 * Assume that MDIE, FTIE, and RSN IE are protected and that there is
940 * no RIC, so total of 3 protected IEs.
942 if (ftie->mic_control[1] != 3) {
943 wpa_printf(MSG_DEBUG, "FT: Unexpected IE count in FTIE (%d)",
944 ftie->mic_control[1]);
945 return WLAN_STATUS_INVALID_FTIE;
948 if (wpa_ft_mic(sm->PTK.kck, sm->addr, sm->wpa_auth->addr, 5,
949 parse.mdie - 2, parse.mdie_len + 2,
950 parse.ftie - 2, parse.ftie_len + 2,
951 parse.rsn - 2, parse.rsn_len + 2, NULL, 0,
953 wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC");
954 return WLAN_STATUS_UNSPECIFIED_FAILURE;
957 if (os_memcmp(mic, ftie->mic, 16) != 0) {
958 wpa_printf(MSG_DEBUG, "FT: Invalid MIC in FTIE");
959 wpa_hexdump(MSG_MSGDUMP, "FT: Received MIC", ftie->mic, 16);
960 wpa_hexdump(MSG_MSGDUMP, "FT: Calculated MIC", mic, 16);
961 return WLAN_STATUS_INVALID_FTIE;
964 return WLAN_STATUS_SUCCESS;
968 int wpa_ft_action_rx(struct wpa_state_machine *sm, const u8 *data, size_t len)
970 const u8 *sta_addr, *target_ap;
974 struct ft_rrb_frame *frame;
980 * data: Category[1] Action[1] STA_Address[6] Target_AP_Address[6]
981 * FT Request action frame body[variable]
985 wpa_printf(MSG_DEBUG, "FT: Too short FT Action frame "
986 "(len=%lu)", (unsigned long) len);
992 target_ap = data + 8;
996 wpa_printf(MSG_DEBUG, "FT: Received FT Action frame (STA=" MACSTR
997 " Target AP=" MACSTR " Action=%d)",
998 MAC2STR(sta_addr), MAC2STR(target_ap), action);
1000 if (os_memcmp(sta_addr, sm->addr, ETH_ALEN) != 0) {
1001 wpa_printf(MSG_DEBUG, "FT: Mismatch in FT Action STA address: "
1002 "STA=" MACSTR " STA-Address=" MACSTR,
1003 MAC2STR(sm->addr), MAC2STR(sta_addr));
1008 * Do some sanity checking on the target AP address (not own and not
1009 * broadcast. This could be extended to filter based on a list of known
1010 * APs in the MD (if such a list were configured).
1012 if ((target_ap[0] & 0x01) ||
1013 os_memcmp(target_ap, sm->wpa_auth->addr, ETH_ALEN) == 0) {
1014 wpa_printf(MSG_DEBUG, "FT: Invalid Target AP in FT Action "
1019 wpa_hexdump(MSG_MSGDUMP, "FT: Action frame body", ies, ies_len);
1021 /* RRB - Forward action frame to the target AP */
1022 frame = os_malloc(sizeof(*frame) + len);
1023 frame->frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
1024 frame->packet_type = FT_PACKET_REQUEST;
1025 frame->action_length = host_to_le16(len);
1026 os_memcpy(frame->ap_address, sm->wpa_auth->addr, ETH_ALEN);
1027 os_memcpy(frame + 1, data, len);
1029 wpa_ft_rrb_send(sm->wpa_auth, target_ap, (u8 *) frame,
1030 sizeof(*frame) + len);
1037 static int wpa_ft_rrb_rx_request(struct wpa_authenticator *wpa_auth,
1038 const u8 *current_ap, const u8 *sta_addr,
1039 const u8 *body, size_t len)
1041 struct wpa_state_machine *sm;
1044 size_t resp_ies_len, rlen;
1045 struct ft_rrb_frame *frame;
1047 sm = wpa_ft_add_sta(wpa_auth, sta_addr);
1049 wpa_printf(MSG_DEBUG, "FT: Failed to add new STA based on "
1054 wpa_hexdump(MSG_MSGDUMP, "FT: RRB Request Frame body", body, len);
1056 status = wpa_ft_process_auth_req(sm, body, len, &resp_ies,
1059 wpa_printf(MSG_DEBUG, "FT: RRB authentication response: STA=" MACSTR
1060 " CurrentAP=" MACSTR " status=%d",
1061 MAC2STR(sm->addr), MAC2STR(current_ap), status);
1062 wpa_hexdump(MSG_DEBUG, "FT: Response IEs", resp_ies, resp_ies_len);
1064 /* RRB - Forward action frame response to the Current AP */
1067 * data: Category[1] Action[1] STA_Address[6] Target_AP_Address[6]
1068 * Status_Code[2] FT Request action frame body[variable]
1070 rlen = 2 + 2 * ETH_ALEN + 2 + resp_ies_len;
1072 frame = os_malloc(sizeof(*frame) + rlen);
1073 frame->frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
1074 frame->packet_type = FT_PACKET_RESPONSE;
1075 frame->action_length = host_to_le16(rlen);
1076 os_memcpy(frame->ap_address, wpa_auth->addr, ETH_ALEN);
1077 pos = (u8 *) (frame + 1);
1078 *pos++ = WLAN_ACTION_FT;
1079 *pos++ = 2; /* Action: Response */
1080 os_memcpy(pos, sta_addr, ETH_ALEN);
1082 os_memcpy(pos, wpa_auth->addr, ETH_ALEN);
1084 WPA_PUT_LE16(pos, status);
1087 os_memcpy(pos, resp_ies, resp_ies_len);
1091 wpa_ft_rrb_send(wpa_auth, current_ap, (u8 *) frame,
1092 sizeof(*frame) + rlen);
1099 static int wpa_ft_rrb_rx_pull(struct wpa_authenticator *wpa_auth,
1101 const u8 *data, size_t data_len)
1103 struct ft_r0kh_r1kh_pull_frame *frame, f;
1104 struct ft_remote_r1kh *r1kh;
1105 struct ft_r0kh_r1kh_resp_frame resp, r;
1108 wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 pull");
1110 if (data_len < sizeof(*frame))
1113 r1kh = wpa_auth->conf.r1kh_list;
1115 if (os_memcmp(r1kh->addr, src_addr, ETH_ALEN) == 0)
1120 wpa_printf(MSG_DEBUG, "FT: No matching R1KH address found for "
1121 "PMK-R1 pull source address " MACSTR,
1126 frame = (struct ft_r0kh_r1kh_pull_frame *) data;
1127 /* aes_unwrap() does not support inplace decryption, so use a temporary
1128 * buffer for the data. */
1129 if (aes_unwrap(r1kh->key, (FT_R0KH_R1KH_PULL_DATA_LEN + 7) / 8,
1130 frame->nonce, f.nonce) < 0) {
1131 wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 pull "
1132 "request from " MACSTR, MAC2STR(src_addr));
1136 wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - nonce",
1137 f.nonce, sizeof(f.nonce));
1138 wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - PMKR0Name",
1139 f.pmk_r0_name, WPA_PMK_NAME_LEN);
1140 wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - R1KH-ID=" MACSTR "S1KH-ID="
1141 MACSTR, MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id));
1143 os_memset(&resp, 0, sizeof(resp));
1144 resp.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
1145 resp.packet_type = FT_PACKET_R0KH_R1KH_RESP;
1146 resp.data_length = host_to_le16(FT_R0KH_R1KH_RESP_DATA_LEN);
1147 os_memcpy(resp.ap_address, wpa_auth->addr, ETH_ALEN);
1149 /* aes_wrap() does not support inplace encryption, so use a temporary
1150 * buffer for the data. */
1151 os_memcpy(r.nonce, f.nonce, sizeof(f.nonce));
1152 os_memcpy(r.r1kh_id, f.r1kh_id, FT_R1KH_ID_LEN);
1153 os_memcpy(r.s1kh_id, f.s1kh_id, ETH_ALEN);
1154 if (wpa_ft_fetch_pmk_r0(wpa_auth, f.s1kh_id, f.pmk_r0_name, pmk_r0) <
1156 wpa_printf(MSG_DEBUG, "FT: No matching PMKR0Name found for "
1161 wpa_derive_pmk_r1(pmk_r0, f.pmk_r0_name, f.r1kh_id, f.s1kh_id,
1162 r.pmk_r1, r.pmk_r1_name);
1163 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", r.pmk_r1, PMK_LEN);
1164 wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", r.pmk_r1_name,
1167 if (aes_wrap(r1kh->key, (FT_R0KH_R1KH_RESP_DATA_LEN + 7) / 8,
1168 r.nonce, resp.nonce) < 0) {
1169 os_memset(pmk_r0, 0, PMK_LEN);
1173 os_memset(pmk_r0, 0, PMK_LEN);
1175 wpa_ft_rrb_send(wpa_auth, src_addr, (u8 *) &resp, sizeof(resp));
1181 static int wpa_ft_rrb_rx_resp(struct wpa_authenticator *wpa_auth,
1183 const u8 *data, size_t data_len)
1185 struct ft_r0kh_r1kh_resp_frame *frame, f;
1186 struct ft_remote_r0kh *r0kh;
1188 wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 pull response");
1190 if (data_len < sizeof(*frame))
1193 r0kh = wpa_auth->conf.r0kh_list;
1195 if (os_memcmp(r0kh->addr, src_addr, ETH_ALEN) == 0)
1200 wpa_printf(MSG_DEBUG, "FT: No matching R0KH address found for "
1201 "PMK-R0 pull response source address " MACSTR,
1206 frame = (struct ft_r0kh_r1kh_resp_frame *) data;
1207 /* aes_unwrap() does not support inplace decryption, so use a temporary
1208 * buffer for the data. */
1209 if (aes_unwrap(r0kh->key, (FT_R0KH_R1KH_RESP_DATA_LEN + 7) / 8,
1210 frame->nonce, f.nonce) < 0) {
1211 wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 pull "
1212 "response from " MACSTR, MAC2STR(src_addr));
1216 if (os_memcmp(f.r1kh_id, wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN)
1218 wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull response did not use a "
1219 "matching R1KH-ID");
1223 /* TODO: verify that <nonce,s1kh_id> matches with a pending request
1224 * and call this requests callback function to finish request
1227 wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - nonce",
1228 f.nonce, sizeof(f.nonce));
1229 wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - R1KH-ID=" MACSTR "S1KH-ID="
1230 MACSTR, MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id));
1231 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1 pull - PMK-R1",
1233 wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - PMKR1Name",
1234 f.pmk_r1_name, WPA_PMK_NAME_LEN);
1236 wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1, f.pmk_r1_name);
1237 os_memset(f.pmk_r1, 0, PMK_LEN);
1243 static int wpa_ft_rrb_rx_push(struct wpa_authenticator *wpa_auth,
1245 const u8 *data, size_t data_len)
1247 struct ft_r0kh_r1kh_push_frame *frame, f;
1248 struct ft_remote_r0kh *r0kh;
1252 wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 push");
1254 if (data_len < sizeof(*frame))
1257 r0kh = wpa_auth->conf.r0kh_list;
1259 if (os_memcmp(r0kh->addr, src_addr, ETH_ALEN) == 0)
1264 wpa_printf(MSG_DEBUG, "FT: No matching R0KH address found for "
1265 "PMK-R0 push source address " MACSTR,
1270 frame = (struct ft_r0kh_r1kh_push_frame *) data;
1271 /* aes_unwrap() does not support inplace decryption, so use a temporary
1272 * buffer for the data. */
1273 if (aes_unwrap(r0kh->key, (FT_R0KH_R1KH_PUSH_DATA_LEN + 7) / 8,
1274 frame->timestamp, f.timestamp) < 0) {
1275 wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 push from "
1276 MACSTR, MAC2STR(src_addr));
1281 tsend = WPA_GET_LE32(f.timestamp);
1282 if ((now.sec > tsend && now.sec - tsend > 60) ||
1283 (now.sec < tsend && tsend - now.sec > 60)) {
1284 wpa_printf(MSG_DEBUG, "FT: PMK-R1 push did not have a valid "
1285 "timestamp: sender time %d own time %d\n",
1286 (int) tsend, (int) now.sec);
1290 if (os_memcmp(f.r1kh_id, wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN)
1292 wpa_printf(MSG_DEBUG, "FT: PMK-R1 push did not use a matching "
1293 "R1KH-ID (received " MACSTR " own " MACSTR ")",
1295 MAC2STR(wpa_auth->conf.r1_key_holder));
1299 wpa_printf(MSG_DEBUG, "FT: PMK-R1 push - R1KH-ID=" MACSTR " S1KH-ID="
1300 MACSTR, MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id));
1301 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1 push - PMK-R1",
1303 wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 push - PMKR1Name",
1304 f.pmk_r1_name, WPA_PMK_NAME_LEN);
1306 wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1, f.pmk_r1_name);
1307 os_memset(f.pmk_r1, 0, PMK_LEN);
1313 int wpa_ft_rrb_rx(struct wpa_authenticator *wpa_auth, const u8 *src_addr,
1314 const u8 *data, size_t data_len)
1316 struct ft_rrb_frame *frame;
1318 const u8 *pos, *end, *start;
1320 const u8 *sta_addr, *target_ap_addr;
1322 wpa_printf(MSG_DEBUG, "FT: RRB received frame from remote AP " MACSTR,
1325 if (data_len < sizeof(*frame)) {
1326 wpa_printf(MSG_DEBUG, "FT: Too short RRB frame (data_len=%lu)",
1327 (unsigned long) data_len);
1332 frame = (struct ft_rrb_frame *) pos;
1333 pos += sizeof(*frame);
1335 alen = le_to_host16(frame->action_length);
1336 wpa_printf(MSG_DEBUG, "FT: RRB frame - frame_type=%d packet_type=%d "
1337 "action_length=%d ap_address=" MACSTR,
1338 frame->frame_type, frame->packet_type, alen,
1339 MAC2STR(frame->ap_address));
1341 if (frame->frame_type != RSN_REMOTE_FRAME_TYPE_FT_RRB) {
1342 /* Discard frame per IEEE Std 802.11r-2008, 11A.10.3 */
1343 wpa_printf(MSG_DEBUG, "FT: RRB discarded frame with "
1344 "unrecognized type %d", frame->frame_type);
1348 if (alen > data_len - sizeof(*frame)) {
1349 wpa_printf(MSG_DEBUG, "FT: RRB frame too short for action "
1354 if (frame->packet_type == FT_PACKET_R0KH_R1KH_PULL)
1355 return wpa_ft_rrb_rx_pull(wpa_auth, src_addr, data, data_len);
1356 if (frame->packet_type == FT_PACKET_R0KH_R1KH_RESP)
1357 return wpa_ft_rrb_rx_resp(wpa_auth, src_addr, data, data_len);
1358 if (frame->packet_type == FT_PACKET_R0KH_R1KH_PUSH)
1359 return wpa_ft_rrb_rx_push(wpa_auth, src_addr, data, data_len);
1361 wpa_hexdump(MSG_MSGDUMP, "FT: RRB - FT Action frame", pos, alen);
1363 if (alen < 1 + 1 + 2 * ETH_ALEN) {
1364 wpa_printf(MSG_DEBUG, "FT: Too short RRB frame (not enough "
1365 "room for Action Frame body); alen=%lu",
1366 (unsigned long) alen);
1372 if (*pos != WLAN_ACTION_FT) {
1373 wpa_printf(MSG_DEBUG, "FT: Unexpected Action frame category "
1382 target_ap_addr = pos;
1384 wpa_printf(MSG_DEBUG, "FT: RRB Action Frame: action=%d sta_addr="
1385 MACSTR " target_ap_addr=" MACSTR,
1386 action, MAC2STR(sta_addr), MAC2STR(target_ap_addr));
1388 if (frame->packet_type == FT_PACKET_REQUEST) {
1389 wpa_printf(MSG_DEBUG, "FT: FT Packet Type - Request");
1392 wpa_printf(MSG_DEBUG, "FT: Unexpected Action %d in "
1393 "RRB Request", action);
1397 if (os_memcmp(target_ap_addr, wpa_auth->addr, ETH_ALEN) != 0) {
1398 wpa_printf(MSG_DEBUG, "FT: Target AP address in the "
1399 "RRB Request does not match with own "
1404 if (wpa_ft_rrb_rx_request(wpa_auth, frame->ap_address,
1405 sta_addr, pos, end - pos) < 0)
1407 } else if (frame->packet_type == FT_PACKET_RESPONSE) {
1410 if (end - pos < 2) {
1411 wpa_printf(MSG_DEBUG, "FT: Not enough room for status "
1412 "code in RRB Response");
1415 status_code = WPA_GET_LE16(pos);
1418 wpa_printf(MSG_DEBUG, "FT: FT Packet Type - Response "
1419 "(status_code=%d)", status_code);
1421 if (wpa_ft_action_send(wpa_auth, sta_addr, start, alen) < 0)
1424 wpa_printf(MSG_DEBUG, "FT: RRB discarded frame with unknown "
1425 "packet_type %d", frame->packet_type);
1433 static void wpa_ft_generate_pmk_r1(struct wpa_authenticator *wpa_auth,
1434 struct wpa_ft_pmk_r0_sa *pmk_r0,
1435 struct ft_remote_r1kh *r1kh,
1438 struct ft_r0kh_r1kh_push_frame frame, f;
1441 os_memset(&frame, 0, sizeof(frame));
1442 frame.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
1443 frame.packet_type = FT_PACKET_R0KH_R1KH_PUSH;
1444 frame.data_length = host_to_le16(FT_R0KH_R1KH_PUSH_DATA_LEN);
1445 os_memcpy(frame.ap_address, wpa_auth->addr, ETH_ALEN);
1447 /* aes_wrap() does not support inplace encryption, so use a temporary
1448 * buffer for the data. */
1449 os_memcpy(f.r1kh_id, r1kh->id, FT_R1KH_ID_LEN);
1450 os_memcpy(f.s1kh_id, s1kh_id, ETH_ALEN);
1451 os_memcpy(f.pmk_r0_name, pmk_r0->pmk_r0_name, WPA_PMK_NAME_LEN);
1452 wpa_derive_pmk_r1(pmk_r0->pmk_r0, pmk_r0->pmk_r0_name, r1kh->id,
1453 s1kh_id, f.pmk_r1, f.pmk_r1_name);
1454 wpa_printf(MSG_DEBUG, "FT: R1KH-ID " MACSTR, MAC2STR(r1kh->id));
1455 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", f.pmk_r1, PMK_LEN);
1456 wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", f.pmk_r1_name,
1459 WPA_PUT_LE32(f.timestamp, now.sec);
1460 if (aes_wrap(r1kh->key, (FT_R0KH_R1KH_PUSH_DATA_LEN + 7) / 8,
1461 f.timestamp, frame.timestamp) < 0)
1464 wpa_ft_rrb_send(wpa_auth, r1kh->addr, (u8 *) &frame, sizeof(frame));
1468 void wpa_ft_push_pmk_r1(struct wpa_authenticator *wpa_auth, const u8 *addr)
1470 struct wpa_ft_pmk_r0_sa *r0;
1471 struct ft_remote_r1kh *r1kh;
1473 if (!wpa_auth->conf.pmk_r1_push)
1476 r0 = wpa_auth->ft_pmk_cache->pmk_r0;
1478 if (os_memcmp(r0->spa, addr, ETH_ALEN) == 0)
1483 if (r0 == NULL || r0->pmk_r1_pushed)
1485 r0->pmk_r1_pushed = 1;
1487 wpa_printf(MSG_DEBUG, "FT: Deriving and pushing PMK-R1 keys to R1KHs "
1488 "for STA " MACSTR, MAC2STR(addr));
1490 r1kh = wpa_auth->conf.r1kh_list;
1492 wpa_ft_generate_pmk_r1(wpa_auth, r0, r1kh, addr);
1497 #endif /* CONFIG_IEEE80211R */