2 * WPA/RSN - Shared functions for supplicant and authenticator
3 * Copyright (c) 2002-2013, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
12 #include "crypto/md5.h"
13 #include "crypto/sha1.h"
14 #include "crypto/sha256.h"
15 #include "crypto/aes_wrap.h"
16 #include "crypto/crypto.h"
17 #include "ieee802_11_defs.h"
19 #include "wpa_common.h"
23 * wpa_eapol_key_mic - Calculate EAPOL-Key MIC
24 * @key: EAPOL-Key Key Confirmation Key (KCK)
25 * @ver: Key descriptor version (WPA_KEY_INFO_TYPE_*)
26 * @buf: Pointer to the beginning of the EAPOL header (version field)
27 * @len: Length of the EAPOL frame (from EAPOL header to the end of the frame)
28 * @mic: Pointer to the buffer to which the EAPOL-Key MIC is written
29 * Returns: 0 on success, -1 on failure
31 * Calculate EAPOL-Key MIC for an EAPOL-Key packet. The EAPOL-Key MIC field has
32 * to be cleared (all zeroes) when calling this function.
34 * Note: 'IEEE Std 802.11i-2004 - 8.5.2 EAPOL-Key frames' has an error in the
35 * description of the Key MIC calculation. It includes packet data from the
36 * beginning of the EAPOL-Key header, not EAPOL header. This incorrect change
37 * happened during final editing of the standard and the correct behavior is
38 * defined in the last draft (IEEE 802.11i/D10).
40 int wpa_eapol_key_mic(const u8 *key, int ver, const u8 *buf, size_t len,
43 u8 hash[SHA1_MAC_LEN];
47 case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4:
48 return hmac_md5(key, 16, buf, len, mic);
49 #endif /* CONFIG_FIPS */
50 case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES:
51 if (hmac_sha1(key, 16, buf, len, hash))
53 os_memcpy(mic, hash, MD5_MAC_LEN);
55 #if defined(CONFIG_IEEE80211R) || defined(CONFIG_IEEE80211W)
56 case WPA_KEY_INFO_TYPE_AES_128_CMAC:
57 return omac1_aes_128(key, buf, len, mic);
58 #endif /* CONFIG_IEEE80211R || CONFIG_IEEE80211W */
68 * wpa_pmk_to_ptk - Calculate PTK from PMK, addresses, and nonces
69 * @pmk: Pairwise master key
70 * @pmk_len: Length of PMK
71 * @label: Label to use in derivation
74 * @nonce1: ANonce or SNonce
75 * @nonce2: SNonce or ANonce
76 * @ptk: Buffer for pairwise transient key
77 * @ptk_len: Length of PTK
78 * @use_sha256: Whether to use SHA256-based KDF
80 * IEEE Std 802.11i-2004 - 8.5.1.2 Pairwise key hierarchy
81 * PTK = PRF-X(PMK, "Pairwise key expansion",
82 * Min(AA, SA) || Max(AA, SA) ||
83 * Min(ANonce, SNonce) || Max(ANonce, SNonce))
85 * STK = PRF-X(SMK, "Peer key expansion",
86 * Min(MAC_I, MAC_P) || Max(MAC_I, MAC_P) ||
87 * Min(INonce, PNonce) || Max(INonce, PNonce))
89 void wpa_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const char *label,
90 const u8 *addr1, const u8 *addr2,
91 const u8 *nonce1, const u8 *nonce2,
92 u8 *ptk, size_t ptk_len, int use_sha256)
94 u8 data[2 * ETH_ALEN + 2 * WPA_NONCE_LEN];
96 if (os_memcmp(addr1, addr2, ETH_ALEN) < 0) {
97 os_memcpy(data, addr1, ETH_ALEN);
98 os_memcpy(data + ETH_ALEN, addr2, ETH_ALEN);
100 os_memcpy(data, addr2, ETH_ALEN);
101 os_memcpy(data + ETH_ALEN, addr1, ETH_ALEN);
104 if (os_memcmp(nonce1, nonce2, WPA_NONCE_LEN) < 0) {
105 os_memcpy(data + 2 * ETH_ALEN, nonce1, WPA_NONCE_LEN);
106 os_memcpy(data + 2 * ETH_ALEN + WPA_NONCE_LEN, nonce2,
109 os_memcpy(data + 2 * ETH_ALEN, nonce2, WPA_NONCE_LEN);
110 os_memcpy(data + 2 * ETH_ALEN + WPA_NONCE_LEN, nonce1,
114 #ifdef CONFIG_IEEE80211W
116 sha256_prf(pmk, pmk_len, label, data, sizeof(data),
119 #endif /* CONFIG_IEEE80211W */
120 sha1_prf(pmk, pmk_len, label, data, sizeof(data), ptk,
123 wpa_printf(MSG_DEBUG, "WPA: PTK derivation - A1=" MACSTR " A2=" MACSTR,
124 MAC2STR(addr1), MAC2STR(addr2));
125 wpa_hexdump(MSG_DEBUG, "WPA: Nonce1", nonce1, WPA_NONCE_LEN);
126 wpa_hexdump(MSG_DEBUG, "WPA: Nonce2", nonce2, WPA_NONCE_LEN);
127 wpa_hexdump_key(MSG_DEBUG, "WPA: PMK", pmk, pmk_len);
128 wpa_hexdump_key(MSG_DEBUG, "WPA: PTK", ptk, ptk_len);
132 #ifdef CONFIG_IEEE80211R
133 int wpa_ft_mic(const u8 *kck, const u8 *sta_addr, const u8 *ap_addr,
134 u8 transaction_seqnum, const u8 *mdie, size_t mdie_len,
135 const u8 *ftie, size_t ftie_len,
136 const u8 *rsnie, size_t rsnie_len,
137 const u8 *ric, size_t ric_len, u8 *mic)
142 buf_len = 2 * ETH_ALEN + 1 + mdie_len + ftie_len + rsnie_len + ric_len;
143 buf = os_malloc(buf_len);
148 os_memcpy(pos, sta_addr, ETH_ALEN);
150 os_memcpy(pos, ap_addr, ETH_ALEN);
152 *pos++ = transaction_seqnum;
154 os_memcpy(pos, rsnie, rsnie_len);
158 os_memcpy(pos, mdie, mdie_len);
162 struct rsn_ftie *_ftie;
163 os_memcpy(pos, ftie, ftie_len);
164 if (ftie_len < 2 + sizeof(*_ftie)) {
168 _ftie = (struct rsn_ftie *) (pos + 2);
169 os_memset(_ftie->mic, 0, sizeof(_ftie->mic));
173 os_memcpy(pos, ric, ric_len);
177 wpa_hexdump(MSG_MSGDUMP, "FT: MIC data", buf, pos - buf);
178 if (omac1_aes_128(kck, buf, pos - buf, mic)) {
189 static int wpa_ft_parse_ftie(const u8 *ie, size_t ie_len,
190 struct wpa_ft_ies *parse)
195 parse->ftie_len = ie_len;
197 pos = ie + sizeof(struct rsn_ftie);
200 while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
202 case FTIE_SUBELEM_R1KH_ID:
203 if (pos[1] != FT_R1KH_ID_LEN) {
204 wpa_printf(MSG_DEBUG, "FT: Invalid R1KH-ID "
205 "length in FTIE: %d", pos[1]);
208 parse->r1kh_id = pos + 2;
210 case FTIE_SUBELEM_GTK:
211 parse->gtk = pos + 2;
212 parse->gtk_len = pos[1];
214 case FTIE_SUBELEM_R0KH_ID:
215 if (pos[1] < 1 || pos[1] > FT_R0KH_ID_MAX_LEN) {
216 wpa_printf(MSG_DEBUG, "FT: Invalid R0KH-ID "
217 "length in FTIE: %d", pos[1]);
220 parse->r0kh_id = pos + 2;
221 parse->r0kh_id_len = pos[1];
223 #ifdef CONFIG_IEEE80211W
224 case FTIE_SUBELEM_IGTK:
225 parse->igtk = pos + 2;
226 parse->igtk_len = pos[1];
228 #endif /* CONFIG_IEEE80211W */
238 int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
239 struct wpa_ft_ies *parse)
242 struct wpa_ie_data data;
244 const struct rsn_ftie *ftie;
245 int prot_ie_count = 0;
247 os_memset(parse, 0, sizeof(*parse));
253 while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
256 parse->rsn = pos + 2;
257 parse->rsn_len = pos[1];
258 ret = wpa_parse_wpa_ie_rsn(parse->rsn - 2,
262 wpa_printf(MSG_DEBUG, "FT: Failed to parse "
266 if (data.num_pmkid == 1 && data.pmkid)
267 parse->rsn_pmkid = data.pmkid;
269 case WLAN_EID_MOBILITY_DOMAIN:
270 parse->mdie = pos + 2;
271 parse->mdie_len = pos[1];
273 case WLAN_EID_FAST_BSS_TRANSITION:
274 if (pos[1] < sizeof(*ftie))
276 ftie = (const struct rsn_ftie *) (pos + 2);
277 prot_ie_count = ftie->mic_control[1];
278 if (wpa_ft_parse_ftie(pos + 2, pos[1], parse) < 0)
281 case WLAN_EID_TIMEOUT_INTERVAL:
282 parse->tie = pos + 2;
283 parse->tie_len = pos[1];
285 case WLAN_EID_RIC_DATA:
286 if (parse->ric == NULL)
294 if (prot_ie_count == 0)
295 return 0; /* no MIC */
298 * Check that the protected IE count matches with IEs included in the
307 if (prot_ie_count < 0) {
308 wpa_printf(MSG_DEBUG, "FT: Some required IEs not included in "
309 "the protected IE count");
313 if (prot_ie_count == 0 && parse->ric) {
314 wpa_printf(MSG_DEBUG, "FT: RIC IE(s) in the frame, but not "
315 "included in protected IE count");
319 /* Determine the end of the RIC IE(s) */
321 while (pos && pos + 2 <= end && pos + 2 + pos[1] <= end &&
326 parse->ric_len = pos - parse->ric;
328 wpa_printf(MSG_DEBUG, "FT: %d protected IEs missing from "
329 "frame", (int) prot_ie_count);
335 #endif /* CONFIG_IEEE80211R */
338 static int rsn_selector_to_bitfield(const u8 *s)
340 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NONE)
341 return WPA_CIPHER_NONE;
342 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_WEP40)
343 return WPA_CIPHER_WEP40;
344 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_TKIP)
345 return WPA_CIPHER_TKIP;
346 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP)
347 return WPA_CIPHER_CCMP;
348 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_WEP104)
349 return WPA_CIPHER_WEP104;
350 #ifdef CONFIG_IEEE80211W
351 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_AES_128_CMAC)
352 return WPA_CIPHER_AES_128_CMAC;
353 #endif /* CONFIG_IEEE80211W */
354 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP)
355 return WPA_CIPHER_GCMP;
356 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP_256)
357 return WPA_CIPHER_CCMP_256;
358 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP_256)
359 return WPA_CIPHER_GCMP_256;
360 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_128)
361 return WPA_CIPHER_BIP_GMAC_128;
362 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_256)
363 return WPA_CIPHER_BIP_GMAC_256;
364 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_CMAC_256)
365 return WPA_CIPHER_BIP_CMAC_256;
370 static int rsn_key_mgmt_to_bitfield(const u8 *s)
372 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_UNSPEC_802_1X)
373 return WPA_KEY_MGMT_IEEE8021X;
374 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X)
375 return WPA_KEY_MGMT_PSK;
376 #ifdef CONFIG_IEEE80211R
377 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_802_1X)
378 return WPA_KEY_MGMT_FT_IEEE8021X;
379 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_PSK)
380 return WPA_KEY_MGMT_FT_PSK;
381 #endif /* CONFIG_IEEE80211R */
382 #ifdef CONFIG_IEEE80211W
383 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SHA256)
384 return WPA_KEY_MGMT_IEEE8021X_SHA256;
385 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_SHA256)
386 return WPA_KEY_MGMT_PSK_SHA256;
387 #endif /* CONFIG_IEEE80211W */
389 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_SAE)
390 return WPA_KEY_MGMT_SAE;
391 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_SAE)
392 return WPA_KEY_MGMT_FT_SAE;
393 #endif /* CONFIG_SAE */
399 * wpa_parse_wpa_ie_rsn - Parse RSN IE
400 * @rsn_ie: Buffer containing RSN IE
401 * @rsn_ie_len: RSN IE buffer length (including IE number and length octets)
402 * @data: Pointer to structure that will be filled in with parsed data
403 * Returns: 0 on success, <0 on failure
405 int wpa_parse_wpa_ie_rsn(const u8 *rsn_ie, size_t rsn_ie_len,
406 struct wpa_ie_data *data)
408 const struct rsn_ie_hdr *hdr;
413 os_memset(data, 0, sizeof(*data));
414 data->proto = WPA_PROTO_RSN;
415 data->pairwise_cipher = WPA_CIPHER_CCMP;
416 data->group_cipher = WPA_CIPHER_CCMP;
417 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
418 data->capabilities = 0;
421 #ifdef CONFIG_IEEE80211W
422 data->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
423 #else /* CONFIG_IEEE80211W */
424 data->mgmt_group_cipher = 0;
425 #endif /* CONFIG_IEEE80211W */
427 if (rsn_ie_len == 0) {
428 /* No RSN IE - fail silently */
432 if (rsn_ie_len < sizeof(struct rsn_ie_hdr)) {
433 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
434 __func__, (unsigned long) rsn_ie_len);
438 hdr = (const struct rsn_ie_hdr *) rsn_ie;
440 if (hdr->elem_id != WLAN_EID_RSN ||
441 hdr->len != rsn_ie_len - 2 ||
442 WPA_GET_LE16(hdr->version) != RSN_VERSION) {
443 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
448 pos = (const u8 *) (hdr + 1);
449 left = rsn_ie_len - sizeof(*hdr);
451 if (left >= RSN_SELECTOR_LEN) {
452 data->group_cipher = rsn_selector_to_bitfield(pos);
453 #ifdef CONFIG_IEEE80211W
454 if (data->group_cipher == WPA_CIPHER_AES_128_CMAC) {
455 wpa_printf(MSG_DEBUG, "%s: AES-128-CMAC used as group "
459 #endif /* CONFIG_IEEE80211W */
460 pos += RSN_SELECTOR_LEN;
461 left -= RSN_SELECTOR_LEN;
462 } else if (left > 0) {
463 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
469 data->pairwise_cipher = 0;
470 count = WPA_GET_LE16(pos);
473 if (count == 0 || left < count * RSN_SELECTOR_LEN) {
474 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
475 "count %u left %u", __func__, count, left);
478 for (i = 0; i < count; i++) {
479 data->pairwise_cipher |= rsn_selector_to_bitfield(pos);
480 pos += RSN_SELECTOR_LEN;
481 left -= RSN_SELECTOR_LEN;
483 #ifdef CONFIG_IEEE80211W
484 if (data->pairwise_cipher & WPA_CIPHER_AES_128_CMAC) {
485 wpa_printf(MSG_DEBUG, "%s: AES-128-CMAC used as "
486 "pairwise cipher", __func__);
489 #endif /* CONFIG_IEEE80211W */
490 } else if (left == 1) {
491 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
498 count = WPA_GET_LE16(pos);
501 if (count == 0 || left < count * RSN_SELECTOR_LEN) {
502 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
503 "count %u left %u", __func__, count, left);
506 for (i = 0; i < count; i++) {
507 data->key_mgmt |= rsn_key_mgmt_to_bitfield(pos);
508 pos += RSN_SELECTOR_LEN;
509 left -= RSN_SELECTOR_LEN;
511 } else if (left == 1) {
512 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
518 data->capabilities = WPA_GET_LE16(pos);
524 data->num_pmkid = WPA_GET_LE16(pos);
527 if (left < (int) data->num_pmkid * PMKID_LEN) {
528 wpa_printf(MSG_DEBUG, "%s: PMKID underflow "
529 "(num_pmkid=%lu left=%d)",
530 __func__, (unsigned long) data->num_pmkid,
536 pos += data->num_pmkid * PMKID_LEN;
537 left -= data->num_pmkid * PMKID_LEN;
541 #ifdef CONFIG_IEEE80211W
543 data->mgmt_group_cipher = rsn_selector_to_bitfield(pos);
544 if (data->mgmt_group_cipher != WPA_CIPHER_AES_128_CMAC) {
545 wpa_printf(MSG_DEBUG, "%s: Unsupported management "
546 "group cipher 0x%x", __func__,
547 data->mgmt_group_cipher);
550 pos += RSN_SELECTOR_LEN;
551 left -= RSN_SELECTOR_LEN;
553 #endif /* CONFIG_IEEE80211W */
556 wpa_printf(MSG_DEBUG, "%s: ie has %u trailing bytes - ignored",
564 static int wpa_selector_to_bitfield(const u8 *s)
566 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_NONE)
567 return WPA_CIPHER_NONE;
568 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_WEP40)
569 return WPA_CIPHER_WEP40;
570 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_TKIP)
571 return WPA_CIPHER_TKIP;
572 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_CCMP)
573 return WPA_CIPHER_CCMP;
574 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_WEP104)
575 return WPA_CIPHER_WEP104;
580 static int wpa_key_mgmt_to_bitfield(const u8 *s)
582 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_UNSPEC_802_1X)
583 return WPA_KEY_MGMT_IEEE8021X;
584 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X)
585 return WPA_KEY_MGMT_PSK;
586 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_NONE)
587 return WPA_KEY_MGMT_WPA_NONE;
592 int wpa_parse_wpa_ie_wpa(const u8 *wpa_ie, size_t wpa_ie_len,
593 struct wpa_ie_data *data)
595 const struct wpa_ie_hdr *hdr;
600 os_memset(data, 0, sizeof(*data));
601 data->proto = WPA_PROTO_WPA;
602 data->pairwise_cipher = WPA_CIPHER_TKIP;
603 data->group_cipher = WPA_CIPHER_TKIP;
604 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
605 data->capabilities = 0;
608 data->mgmt_group_cipher = 0;
610 if (wpa_ie_len == 0) {
611 /* No WPA IE - fail silently */
615 if (wpa_ie_len < sizeof(struct wpa_ie_hdr)) {
616 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
617 __func__, (unsigned long) wpa_ie_len);
621 hdr = (const struct wpa_ie_hdr *) wpa_ie;
623 if (hdr->elem_id != WLAN_EID_VENDOR_SPECIFIC ||
624 hdr->len != wpa_ie_len - 2 ||
625 RSN_SELECTOR_GET(hdr->oui) != WPA_OUI_TYPE ||
626 WPA_GET_LE16(hdr->version) != WPA_VERSION) {
627 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
632 pos = (const u8 *) (hdr + 1);
633 left = wpa_ie_len - sizeof(*hdr);
635 if (left >= WPA_SELECTOR_LEN) {
636 data->group_cipher = wpa_selector_to_bitfield(pos);
637 pos += WPA_SELECTOR_LEN;
638 left -= WPA_SELECTOR_LEN;
639 } else if (left > 0) {
640 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
646 data->pairwise_cipher = 0;
647 count = WPA_GET_LE16(pos);
650 if (count == 0 || left < count * WPA_SELECTOR_LEN) {
651 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
652 "count %u left %u", __func__, count, left);
655 for (i = 0; i < count; i++) {
656 data->pairwise_cipher |= wpa_selector_to_bitfield(pos);
657 pos += WPA_SELECTOR_LEN;
658 left -= WPA_SELECTOR_LEN;
660 } else if (left == 1) {
661 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
668 count = WPA_GET_LE16(pos);
671 if (count == 0 || left < count * WPA_SELECTOR_LEN) {
672 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
673 "count %u left %u", __func__, count, left);
676 for (i = 0; i < count; i++) {
677 data->key_mgmt |= wpa_key_mgmt_to_bitfield(pos);
678 pos += WPA_SELECTOR_LEN;
679 left -= WPA_SELECTOR_LEN;
681 } else if (left == 1) {
682 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
688 data->capabilities = WPA_GET_LE16(pos);
694 wpa_printf(MSG_DEBUG, "%s: ie has %u trailing bytes - ignored",
702 #ifdef CONFIG_IEEE80211R
705 * wpa_derive_pmk_r0 - Derive PMK-R0 and PMKR0Name
707 * IEEE Std 802.11r-2008 - 8.5.1.5.3
709 void wpa_derive_pmk_r0(const u8 *xxkey, size_t xxkey_len,
710 const u8 *ssid, size_t ssid_len,
711 const u8 *mdid, const u8 *r0kh_id, size_t r0kh_id_len,
712 const u8 *s0kh_id, u8 *pmk_r0, u8 *pmk_r0_name)
714 u8 buf[1 + WPA_MAX_SSID_LEN + MOBILITY_DOMAIN_ID_LEN + 1 +
715 FT_R0KH_ID_MAX_LEN + ETH_ALEN];
716 u8 *pos, r0_key_data[48], hash[32];
721 * R0-Key-Data = KDF-384(XXKey, "FT-R0",
722 * SSIDlength || SSID || MDID || R0KHlength ||
723 * R0KH-ID || S0KH-ID)
724 * XXKey is either the second 256 bits of MSK or PSK.
725 * PMK-R0 = L(R0-Key-Data, 0, 256)
726 * PMK-R0Name-Salt = L(R0-Key-Data, 256, 128)
728 if (ssid_len > WPA_MAX_SSID_LEN || r0kh_id_len > FT_R0KH_ID_MAX_LEN)
732 os_memcpy(pos, ssid, ssid_len);
734 os_memcpy(pos, mdid, MOBILITY_DOMAIN_ID_LEN);
735 pos += MOBILITY_DOMAIN_ID_LEN;
736 *pos++ = r0kh_id_len;
737 os_memcpy(pos, r0kh_id, r0kh_id_len);
739 os_memcpy(pos, s0kh_id, ETH_ALEN);
742 sha256_prf(xxkey, xxkey_len, "FT-R0", buf, pos - buf,
743 r0_key_data, sizeof(r0_key_data));
744 os_memcpy(pmk_r0, r0_key_data, PMK_LEN);
747 * PMKR0Name = Truncate-128(SHA-256("FT-R0N" || PMK-R0Name-Salt)
749 addr[0] = (const u8 *) "FT-R0N";
751 addr[1] = r0_key_data + PMK_LEN;
754 sha256_vector(2, addr, len, hash);
755 os_memcpy(pmk_r0_name, hash, WPA_PMK_NAME_LEN);
760 * wpa_derive_pmk_r1_name - Derive PMKR1Name
762 * IEEE Std 802.11r-2008 - 8.5.1.5.4
764 void wpa_derive_pmk_r1_name(const u8 *pmk_r0_name, const u8 *r1kh_id,
765 const u8 *s1kh_id, u8 *pmk_r1_name)
772 * PMKR1Name = Truncate-128(SHA-256("FT-R1N" || PMKR0Name ||
773 * R1KH-ID || S1KH-ID))
775 addr[0] = (const u8 *) "FT-R1N";
777 addr[1] = pmk_r0_name;
778 len[1] = WPA_PMK_NAME_LEN;
780 len[2] = FT_R1KH_ID_LEN;
784 sha256_vector(4, addr, len, hash);
785 os_memcpy(pmk_r1_name, hash, WPA_PMK_NAME_LEN);
790 * wpa_derive_pmk_r1 - Derive PMK-R1 and PMKR1Name from PMK-R0
792 * IEEE Std 802.11r-2008 - 8.5.1.5.4
794 void wpa_derive_pmk_r1(const u8 *pmk_r0, const u8 *pmk_r0_name,
795 const u8 *r1kh_id, const u8 *s1kh_id,
796 u8 *pmk_r1, u8 *pmk_r1_name)
798 u8 buf[FT_R1KH_ID_LEN + ETH_ALEN];
801 /* PMK-R1 = KDF-256(PMK-R0, "FT-R1", R1KH-ID || S1KH-ID) */
803 os_memcpy(pos, r1kh_id, FT_R1KH_ID_LEN);
804 pos += FT_R1KH_ID_LEN;
805 os_memcpy(pos, s1kh_id, ETH_ALEN);
808 sha256_prf(pmk_r0, PMK_LEN, "FT-R1", buf, pos - buf, pmk_r1, PMK_LEN);
810 wpa_derive_pmk_r1_name(pmk_r0_name, r1kh_id, s1kh_id, pmk_r1_name);
815 * wpa_pmk_r1_to_ptk - Derive PTK and PTKName from PMK-R1
817 * IEEE Std 802.11r-2008 - 8.5.1.5.5
819 void wpa_pmk_r1_to_ptk(const u8 *pmk_r1, const u8 *snonce, const u8 *anonce,
820 const u8 *sta_addr, const u8 *bssid,
821 const u8 *pmk_r1_name,
822 u8 *ptk, size_t ptk_len, u8 *ptk_name)
824 u8 buf[2 * WPA_NONCE_LEN + 2 * ETH_ALEN];
830 * PTK = KDF-PTKLen(PMK-R1, "FT-PTK", SNonce || ANonce ||
834 os_memcpy(pos, snonce, WPA_NONCE_LEN);
835 pos += WPA_NONCE_LEN;
836 os_memcpy(pos, anonce, WPA_NONCE_LEN);
837 pos += WPA_NONCE_LEN;
838 os_memcpy(pos, bssid, ETH_ALEN);
840 os_memcpy(pos, sta_addr, ETH_ALEN);
843 sha256_prf(pmk_r1, PMK_LEN, "FT-PTK", buf, pos - buf, ptk, ptk_len);
846 * PTKName = Truncate-128(SHA-256(PMKR1Name || "FT-PTKN" || SNonce ||
847 * ANonce || BSSID || STA-ADDR))
849 addr[0] = pmk_r1_name;
850 len[0] = WPA_PMK_NAME_LEN;
851 addr[1] = (const u8 *) "FT-PTKN";
854 len[2] = WPA_NONCE_LEN;
856 len[3] = WPA_NONCE_LEN;
862 sha256_vector(6, addr, len, hash);
863 os_memcpy(ptk_name, hash, WPA_PMK_NAME_LEN);
866 #endif /* CONFIG_IEEE80211R */
870 * rsn_pmkid - Calculate PMK identifier
871 * @pmk: Pairwise master key
872 * @pmk_len: Length of pmk in bytes
873 * @aa: Authenticator address
874 * @spa: Supplicant address
875 * @pmkid: Buffer for PMKID
876 * @use_sha256: Whether to use SHA256-based KDF
878 * IEEE Std 802.11i-2004 - 8.5.1.2 Pairwise key hierarchy
879 * PMKID = HMAC-SHA1-128(PMK, "PMK Name" || AA || SPA)
881 void rsn_pmkid(const u8 *pmk, size_t pmk_len, const u8 *aa, const u8 *spa,
882 u8 *pmkid, int use_sha256)
884 char *title = "PMK Name";
886 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
887 unsigned char hash[SHA256_MAC_LEN];
889 addr[0] = (u8 *) title;
893 #ifdef CONFIG_IEEE80211W
895 hmac_sha256_vector(pmk, pmk_len, 3, addr, len, hash);
897 #endif /* CONFIG_IEEE80211W */
898 hmac_sha1_vector(pmk, pmk_len, 3, addr, len, hash);
899 os_memcpy(pmkid, hash, PMKID_LEN);
904 * wpa_cipher_txt - Convert cipher suite to a text string
905 * @cipher: Cipher suite (WPA_CIPHER_* enum)
906 * Returns: Pointer to a text string of the cipher suite name
908 const char * wpa_cipher_txt(int cipher)
911 case WPA_CIPHER_NONE:
913 case WPA_CIPHER_WEP40:
915 case WPA_CIPHER_WEP104:
917 case WPA_CIPHER_TKIP:
919 case WPA_CIPHER_CCMP:
921 case WPA_CIPHER_CCMP | WPA_CIPHER_TKIP:
923 case WPA_CIPHER_GCMP:
925 case WPA_CIPHER_GCMP_256:
927 case WPA_CIPHER_CCMP_256:
929 case WPA_CIPHER_GTK_NOT_USED:
930 return "GTK_NOT_USED";
938 * wpa_key_mgmt_txt - Convert key management suite to a text string
939 * @key_mgmt: Key management suite (WPA_KEY_MGMT_* enum)
940 * @proto: WPA/WPA2 version (WPA_PROTO_*)
941 * Returns: Pointer to a text string of the key management suite name
943 const char * wpa_key_mgmt_txt(int key_mgmt, int proto)
946 case WPA_KEY_MGMT_IEEE8021X:
947 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
948 return "WPA2+WPA/IEEE 802.1X/EAP";
949 return proto == WPA_PROTO_RSN ?
950 "WPA2/IEEE 802.1X/EAP" : "WPA/IEEE 802.1X/EAP";
951 case WPA_KEY_MGMT_PSK:
952 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
953 return "WPA2-PSK+WPA-PSK";
954 return proto == WPA_PROTO_RSN ?
955 "WPA2-PSK" : "WPA-PSK";
956 case WPA_KEY_MGMT_NONE:
958 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
959 return "IEEE 802.1X (no WPA)";
960 #ifdef CONFIG_IEEE80211R
961 case WPA_KEY_MGMT_FT_IEEE8021X:
963 case WPA_KEY_MGMT_FT_PSK:
965 #endif /* CONFIG_IEEE80211R */
966 #ifdef CONFIG_IEEE80211W
967 case WPA_KEY_MGMT_IEEE8021X_SHA256:
968 return "WPA2-EAP-SHA256";
969 case WPA_KEY_MGMT_PSK_SHA256:
970 return "WPA2-PSK-SHA256";
971 #endif /* CONFIG_IEEE80211W */
978 int wpa_compare_rsn_ie(int ft_initial_assoc,
979 const u8 *ie1, size_t ie1len,
980 const u8 *ie2, size_t ie2len)
982 if (ie1 == NULL || ie2 == NULL)
985 if (ie1len == ie2len && os_memcmp(ie1, ie2, ie1len) == 0)
986 return 0; /* identical IEs */
988 #ifdef CONFIG_IEEE80211R
989 if (ft_initial_assoc) {
990 struct wpa_ie_data ie1d, ie2d;
992 * The PMKID-List in RSN IE is different between Beacon/Probe
993 * Response/(Re)Association Request frames and EAPOL-Key
994 * messages in FT initial mobility domain association. Allow
995 * for this, but verify that other parts of the RSN IEs are
998 if (wpa_parse_wpa_ie_rsn(ie1, ie1len, &ie1d) < 0 ||
999 wpa_parse_wpa_ie_rsn(ie2, ie2len, &ie2d) < 0)
1001 if (ie1d.proto == ie2d.proto &&
1002 ie1d.pairwise_cipher == ie2d.pairwise_cipher &&
1003 ie1d.group_cipher == ie2d.group_cipher &&
1004 ie1d.key_mgmt == ie2d.key_mgmt &&
1005 ie1d.capabilities == ie2d.capabilities &&
1006 ie1d.mgmt_group_cipher == ie2d.mgmt_group_cipher)
1009 #endif /* CONFIG_IEEE80211R */
1015 #ifdef CONFIG_IEEE80211R
1016 int wpa_insert_pmkid(u8 *ies, size_t ies_len, const u8 *pmkid)
1018 u8 *start, *end, *rpos, *rend;
1022 end = ies + ies_len;
1024 while (start < end) {
1025 if (*start == WLAN_EID_RSN)
1027 start += 2 + start[1];
1030 wpa_printf(MSG_ERROR, "FT: Could not find RSN IE in "
1034 wpa_hexdump(MSG_DEBUG, "FT: RSN IE before modification",
1035 start, 2 + start[1]);
1037 /* Find start of PMKID-Count */
1039 rend = rpos + start[1];
1041 /* Skip Version and Group Data Cipher Suite */
1043 /* Skip Pairwise Cipher Suite Count and List */
1044 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
1045 /* Skip AKM Suite Count and List */
1046 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
1049 /* Add RSN Capabilities */
1050 os_memmove(rpos + 2, rpos, end - rpos);
1054 /* Skip RSN Capabilities */
1057 wpa_printf(MSG_ERROR, "FT: Could not parse RSN IE in "
1064 /* No PMKID-Count field included; add it */
1065 os_memmove(rpos + 2 + PMKID_LEN, rpos, end - rpos);
1066 WPA_PUT_LE16(rpos, 1);
1068 os_memcpy(rpos, pmkid, PMKID_LEN);
1069 added += 2 + PMKID_LEN;
1070 start[1] += 2 + PMKID_LEN;
1072 /* PMKID-Count was included; use it */
1073 if (WPA_GET_LE16(rpos) != 0) {
1074 wpa_printf(MSG_ERROR, "FT: Unexpected PMKID "
1075 "in RSN IE in EAPOL-Key data");
1078 WPA_PUT_LE16(rpos, 1);
1080 os_memmove(rpos + PMKID_LEN, rpos, end - rpos);
1081 os_memcpy(rpos, pmkid, PMKID_LEN);
1083 start[1] += PMKID_LEN;
1086 wpa_hexdump(MSG_DEBUG, "FT: RSN IE after modification "
1087 "(PMKID inserted)", start, 2 + start[1]);
1091 #endif /* CONFIG_IEEE80211R */
1094 int wpa_cipher_key_len(int cipher)
1097 case WPA_CIPHER_CCMP_256:
1098 case WPA_CIPHER_GCMP_256:
1100 case WPA_CIPHER_CCMP:
1101 case WPA_CIPHER_GCMP:
1103 case WPA_CIPHER_TKIP:
1105 case WPA_CIPHER_WEP104:
1107 case WPA_CIPHER_WEP40:
1115 int wpa_cipher_rsc_len(int cipher)
1118 case WPA_CIPHER_CCMP_256:
1119 case WPA_CIPHER_GCMP_256:
1120 case WPA_CIPHER_CCMP:
1121 case WPA_CIPHER_GCMP:
1122 case WPA_CIPHER_TKIP:
1124 case WPA_CIPHER_WEP104:
1125 case WPA_CIPHER_WEP40:
1133 int wpa_cipher_to_alg(int cipher)
1136 case WPA_CIPHER_CCMP_256:
1137 return WPA_ALG_CCMP_256;
1138 case WPA_CIPHER_GCMP_256:
1139 return WPA_ALG_GCMP_256;
1140 case WPA_CIPHER_CCMP:
1141 return WPA_ALG_CCMP;
1142 case WPA_CIPHER_GCMP:
1143 return WPA_ALG_GCMP;
1144 case WPA_CIPHER_TKIP:
1145 return WPA_ALG_TKIP;
1146 case WPA_CIPHER_WEP104:
1147 case WPA_CIPHER_WEP40:
1150 return WPA_ALG_NONE;
1154 int wpa_cipher_valid_pairwise(int cipher)
1156 return cipher == WPA_CIPHER_CCMP_256 ||
1157 cipher == WPA_CIPHER_GCMP_256 ||
1158 cipher == WPA_CIPHER_CCMP ||
1159 cipher == WPA_CIPHER_GCMP ||
1160 cipher == WPA_CIPHER_TKIP;
1164 u32 wpa_cipher_to_suite(int proto, int cipher)
1166 if (cipher & WPA_CIPHER_CCMP_256)
1167 return RSN_CIPHER_SUITE_CCMP_256;
1168 if (cipher & WPA_CIPHER_GCMP_256)
1169 return RSN_CIPHER_SUITE_GCMP_256;
1170 if (cipher & WPA_CIPHER_CCMP)
1171 return (proto == WPA_PROTO_RSN ?
1172 RSN_CIPHER_SUITE_CCMP : WPA_CIPHER_SUITE_CCMP);
1173 if (cipher & WPA_CIPHER_GCMP)
1174 return RSN_CIPHER_SUITE_GCMP;
1175 if (cipher & WPA_CIPHER_TKIP)
1176 return (proto == WPA_PROTO_RSN ?
1177 RSN_CIPHER_SUITE_TKIP : WPA_CIPHER_SUITE_TKIP);
1178 if (cipher & WPA_CIPHER_WEP104)
1179 return (proto == WPA_PROTO_RSN ?
1180 RSN_CIPHER_SUITE_WEP104 : WPA_CIPHER_SUITE_WEP104);
1181 if (cipher & WPA_CIPHER_WEP40)
1182 return (proto == WPA_PROTO_RSN ?
1183 RSN_CIPHER_SUITE_WEP40 : WPA_CIPHER_SUITE_WEP40);
1184 if (cipher & WPA_CIPHER_NONE)
1185 return (proto == WPA_PROTO_RSN ?
1186 RSN_CIPHER_SUITE_NONE : WPA_CIPHER_SUITE_NONE);
1187 if (cipher & WPA_CIPHER_GTK_NOT_USED)
1188 return RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED;
1193 int rsn_cipher_put_suites(u8 *pos, int ciphers)
1197 if (ciphers & WPA_CIPHER_CCMP_256) {
1198 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP_256);
1199 pos += RSN_SELECTOR_LEN;
1202 if (ciphers & WPA_CIPHER_GCMP_256) {
1203 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP_256);
1204 pos += RSN_SELECTOR_LEN;
1207 if (ciphers & WPA_CIPHER_CCMP) {
1208 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP);
1209 pos += RSN_SELECTOR_LEN;
1212 if (ciphers & WPA_CIPHER_GCMP) {
1213 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP);
1214 pos += RSN_SELECTOR_LEN;
1217 if (ciphers & WPA_CIPHER_TKIP) {
1218 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_TKIP);
1219 pos += RSN_SELECTOR_LEN;
1222 if (ciphers & WPA_CIPHER_NONE) {
1223 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NONE);
1224 pos += RSN_SELECTOR_LEN;
1232 int wpa_cipher_put_suites(u8 *pos, int ciphers)
1236 if (ciphers & WPA_CIPHER_CCMP) {
1237 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_CCMP);
1238 pos += WPA_SELECTOR_LEN;
1241 if (ciphers & WPA_CIPHER_TKIP) {
1242 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_TKIP);
1243 pos += WPA_SELECTOR_LEN;
1246 if (ciphers & WPA_CIPHER_NONE) {
1247 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_NONE);
1248 pos += WPA_SELECTOR_LEN;
1256 int wpa_pick_pairwise_cipher(int ciphers, int none_allowed)
1258 if (ciphers & WPA_CIPHER_CCMP_256)
1259 return WPA_CIPHER_CCMP_256;
1260 if (ciphers & WPA_CIPHER_GCMP_256)
1261 return WPA_CIPHER_GCMP_256;
1262 if (ciphers & WPA_CIPHER_CCMP)
1263 return WPA_CIPHER_CCMP;
1264 if (ciphers & WPA_CIPHER_GCMP)
1265 return WPA_CIPHER_GCMP;
1266 if (ciphers & WPA_CIPHER_TKIP)
1267 return WPA_CIPHER_TKIP;
1268 if (none_allowed && (ciphers & WPA_CIPHER_NONE))
1269 return WPA_CIPHER_NONE;
1274 int wpa_pick_group_cipher(int ciphers)
1276 if (ciphers & WPA_CIPHER_CCMP_256)
1277 return WPA_CIPHER_CCMP_256;
1278 if (ciphers & WPA_CIPHER_GCMP_256)
1279 return WPA_CIPHER_GCMP_256;
1280 if (ciphers & WPA_CIPHER_CCMP)
1281 return WPA_CIPHER_CCMP;
1282 if (ciphers & WPA_CIPHER_GCMP)
1283 return WPA_CIPHER_GCMP;
1284 if (ciphers & WPA_CIPHER_GTK_NOT_USED)
1285 return WPA_CIPHER_GTK_NOT_USED;
1286 if (ciphers & WPA_CIPHER_TKIP)
1287 return WPA_CIPHER_TKIP;
1288 if (ciphers & WPA_CIPHER_WEP104)
1289 return WPA_CIPHER_WEP104;
1290 if (ciphers & WPA_CIPHER_WEP40)
1291 return WPA_CIPHER_WEP40;
1296 int wpa_parse_cipher(const char *value)
1299 char *start, *end, *buf;
1301 buf = os_strdup(value);
1306 while (*start != '\0') {
1307 while (*start == ' ' || *start == '\t')
1312 while (*end != ' ' && *end != '\t' && *end != '\0')
1314 last = *end == '\0';
1316 if (os_strcmp(start, "CCMP-256") == 0)
1317 val |= WPA_CIPHER_CCMP_256;
1318 else if (os_strcmp(start, "GCMP-256") == 0)
1319 val |= WPA_CIPHER_GCMP_256;
1320 else if (os_strcmp(start, "CCMP") == 0)
1321 val |= WPA_CIPHER_CCMP;
1322 else if (os_strcmp(start, "GCMP") == 0)
1323 val |= WPA_CIPHER_GCMP;
1324 else if (os_strcmp(start, "TKIP") == 0)
1325 val |= WPA_CIPHER_TKIP;
1326 else if (os_strcmp(start, "WEP104") == 0)
1327 val |= WPA_CIPHER_WEP104;
1328 else if (os_strcmp(start, "WEP40") == 0)
1329 val |= WPA_CIPHER_WEP40;
1330 else if (os_strcmp(start, "NONE") == 0)
1331 val |= WPA_CIPHER_NONE;
1332 else if (os_strcmp(start, "GTK_NOT_USED") == 0)
1333 val |= WPA_CIPHER_GTK_NOT_USED;
1349 int wpa_write_ciphers(char *start, char *end, int ciphers, const char *delim)
1354 if (ciphers & WPA_CIPHER_CCMP_256) {
1355 ret = os_snprintf(pos, end - pos, "%sCCMP-256",
1356 pos == start ? "" : delim);
1357 if (ret < 0 || ret >= end - pos)
1361 if (ciphers & WPA_CIPHER_GCMP_256) {
1362 ret = os_snprintf(pos, end - pos, "%sGCMP-256",
1363 pos == start ? "" : delim);
1364 if (ret < 0 || ret >= end - pos)
1368 if (ciphers & WPA_CIPHER_CCMP) {
1369 ret = os_snprintf(pos, end - pos, "%sCCMP",
1370 pos == start ? "" : delim);
1371 if (ret < 0 || ret >= end - pos)
1375 if (ciphers & WPA_CIPHER_GCMP) {
1376 ret = os_snprintf(pos, end - pos, "%sGCMP",
1377 pos == start ? "" : delim);
1378 if (ret < 0 || ret >= end - pos)
1382 if (ciphers & WPA_CIPHER_TKIP) {
1383 ret = os_snprintf(pos, end - pos, "%sTKIP",
1384 pos == start ? "" : delim);
1385 if (ret < 0 || ret >= end - pos)
1389 if (ciphers & WPA_CIPHER_WEP104) {
1390 ret = os_snprintf(pos, end - pos, "%sWEP104",
1391 pos == start ? "" : delim);
1392 if (ret < 0 || ret >= end - pos)
1396 if (ciphers & WPA_CIPHER_WEP40) {
1397 ret = os_snprintf(pos, end - pos, "%sWEP40",
1398 pos == start ? "" : delim);
1399 if (ret < 0 || ret >= end - pos)
1403 if (ciphers & WPA_CIPHER_NONE) {
1404 ret = os_snprintf(pos, end - pos, "%sNONE",
1405 pos == start ? "" : delim);
1406 if (ret < 0 || ret >= end - pos)
1415 int wpa_select_ap_group_cipher(int wpa, int wpa_pairwise, int rsn_pairwise)
1419 /* Select group cipher based on the enabled pairwise cipher suites */
1421 pairwise |= wpa_pairwise;
1423 pairwise |= rsn_pairwise;
1425 if (pairwise & WPA_CIPHER_TKIP)
1426 return WPA_CIPHER_TKIP;
1427 if ((pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP)
1428 return WPA_CIPHER_GCMP;
1429 if ((pairwise & (WPA_CIPHER_GCMP_256 | WPA_CIPHER_CCMP |
1430 WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP_256)
1431 return WPA_CIPHER_GCMP_256;
1432 if ((pairwise & (WPA_CIPHER_CCMP_256 | WPA_CIPHER_CCMP |
1433 WPA_CIPHER_GCMP)) == WPA_CIPHER_CCMP_256)
1434 return WPA_CIPHER_CCMP_256;
1435 return WPA_CIPHER_CCMP;