2 * WPA/RSN - Shared functions for supplicant and authenticator
3 * Copyright (c) 2002-2015, 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/sha384.h"
16 #include "crypto/aes_wrap.h"
17 #include "crypto/crypto.h"
18 #include "ieee802_11_defs.h"
20 #include "wpa_common.h"
23 static unsigned int wpa_kck_len(int akmp)
25 if (akmp == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
31 static unsigned int wpa_kek_len(int akmp)
33 if (akmp == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
39 unsigned int wpa_mic_len(int akmp)
41 if (akmp == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
48 * wpa_eapol_key_mic - Calculate EAPOL-Key MIC
49 * @key: EAPOL-Key Key Confirmation Key (KCK)
50 * @key_len: KCK length in octets
51 * @akmp: WPA_KEY_MGMT_* used in key derivation
52 * @ver: Key descriptor version (WPA_KEY_INFO_TYPE_*)
53 * @buf: Pointer to the beginning of the EAPOL header (version field)
54 * @len: Length of the EAPOL frame (from EAPOL header to the end of the frame)
55 * @mic: Pointer to the buffer to which the EAPOL-Key MIC is written
56 * Returns: 0 on success, -1 on failure
58 * Calculate EAPOL-Key MIC for an EAPOL-Key packet. The EAPOL-Key MIC field has
59 * to be cleared (all zeroes) when calling this function.
61 * Note: 'IEEE Std 802.11i-2004 - 8.5.2 EAPOL-Key frames' has an error in the
62 * description of the Key MIC calculation. It includes packet data from the
63 * beginning of the EAPOL-Key header, not EAPOL header. This incorrect change
64 * happened during final editing of the standard and the correct behavior is
65 * defined in the last draft (IEEE 802.11i/D10).
67 int wpa_eapol_key_mic(const u8 *key, size_t key_len, int akmp, int ver,
68 const u8 *buf, size_t len, u8 *mic)
70 u8 hash[SHA384_MAC_LEN];
74 case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4:
75 return hmac_md5(key, key_len, buf, len, mic);
76 #endif /* CONFIG_FIPS */
77 case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES:
78 if (hmac_sha1(key, key_len, buf, len, hash))
80 os_memcpy(mic, hash, MD5_MAC_LEN);
82 #if defined(CONFIG_IEEE80211R) || defined(CONFIG_IEEE80211W)
83 case WPA_KEY_INFO_TYPE_AES_128_CMAC:
84 return omac1_aes_128(key, buf, len, mic);
85 #endif /* CONFIG_IEEE80211R || CONFIG_IEEE80211W */
86 case WPA_KEY_INFO_TYPE_AKM_DEFINED:
89 case WPA_KEY_MGMT_OSEN:
90 return omac1_aes_128(key, buf, len, mic);
91 #endif /* CONFIG_HS20 */
93 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
94 if (hmac_sha256(key, key_len, buf, len, hash))
96 os_memcpy(mic, hash, MD5_MAC_LEN);
98 #endif /* CONFIG_SUITEB */
99 #ifdef CONFIG_SUITEB192
100 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
101 if (hmac_sha384(key, key_len, buf, len, hash))
103 os_memcpy(mic, hash, 24);
105 #endif /* CONFIG_SUITEB192 */
119 * wpa_pmk_to_ptk - Calculate PTK from PMK, addresses, and nonces
120 * @pmk: Pairwise master key
121 * @pmk_len: Length of PMK
122 * @label: Label to use in derivation
125 * @nonce1: ANonce or SNonce
126 * @nonce2: SNonce or ANonce
127 * @ptk: Buffer for pairwise transient key
128 * @akmp: Negotiated AKM
129 * @cipher: Negotiated pairwise cipher
130 * Returns: 0 on success, -1 on failure
132 * IEEE Std 802.11i-2004 - 8.5.1.2 Pairwise key hierarchy
133 * PTK = PRF-X(PMK, "Pairwise key expansion",
134 * Min(AA, SA) || Max(AA, SA) ||
135 * Min(ANonce, SNonce) || Max(ANonce, SNonce))
137 * STK = PRF-X(SMK, "Peer key expansion",
138 * Min(MAC_I, MAC_P) || Max(MAC_I, MAC_P) ||
139 * Min(INonce, PNonce) || Max(INonce, PNonce))
141 int wpa_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const char *label,
142 const u8 *addr1, const u8 *addr2,
143 const u8 *nonce1, const u8 *nonce2,
144 struct wpa_ptk *ptk, int akmp, int cipher)
146 u8 data[2 * ETH_ALEN + 2 * WPA_NONCE_LEN];
147 u8 tmp[WPA_KCK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN];
150 if (os_memcmp(addr1, addr2, ETH_ALEN) < 0) {
151 os_memcpy(data, addr1, ETH_ALEN);
152 os_memcpy(data + ETH_ALEN, addr2, ETH_ALEN);
154 os_memcpy(data, addr2, ETH_ALEN);
155 os_memcpy(data + ETH_ALEN, addr1, ETH_ALEN);
158 if (os_memcmp(nonce1, nonce2, WPA_NONCE_LEN) < 0) {
159 os_memcpy(data + 2 * ETH_ALEN, nonce1, WPA_NONCE_LEN);
160 os_memcpy(data + 2 * ETH_ALEN + WPA_NONCE_LEN, nonce2,
163 os_memcpy(data + 2 * ETH_ALEN, nonce2, WPA_NONCE_LEN);
164 os_memcpy(data + 2 * ETH_ALEN + WPA_NONCE_LEN, nonce1,
168 ptk->kck_len = wpa_kck_len(akmp);
169 ptk->kek_len = wpa_kek_len(akmp);
170 ptk->tk_len = wpa_cipher_key_len(cipher);
171 ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len;
173 #ifdef CONFIG_IEEE80211W
174 if (wpa_key_mgmt_sha256(akmp))
175 sha256_prf(pmk, pmk_len, label, data, sizeof(data),
178 #endif /* CONFIG_IEEE80211W */
179 sha1_prf(pmk, pmk_len, label, data, sizeof(data), tmp, ptk_len);
181 wpa_printf(MSG_DEBUG, "WPA: PTK derivation - A1=" MACSTR " A2=" MACSTR,
182 MAC2STR(addr1), MAC2STR(addr2));
183 wpa_hexdump(MSG_DEBUG, "WPA: Nonce1", nonce1, WPA_NONCE_LEN);
184 wpa_hexdump(MSG_DEBUG, "WPA: Nonce2", nonce2, WPA_NONCE_LEN);
185 wpa_hexdump_key(MSG_DEBUG, "WPA: PMK", pmk, pmk_len);
186 wpa_hexdump_key(MSG_DEBUG, "WPA: PTK", tmp, ptk_len);
188 os_memcpy(ptk->kck, tmp, ptk->kck_len);
189 wpa_hexdump_key(MSG_DEBUG, "WPA: KCK", ptk->kck, ptk->kck_len);
191 os_memcpy(ptk->kek, tmp + ptk->kck_len, ptk->kek_len);
192 wpa_hexdump_key(MSG_DEBUG, "WPA: KEK", ptk->kek, ptk->kek_len);
194 os_memcpy(ptk->tk, tmp + ptk->kck_len + ptk->kek_len, ptk->tk_len);
195 wpa_hexdump_key(MSG_DEBUG, "WPA: TK", ptk->tk, ptk->tk_len);
197 os_memset(tmp, 0, sizeof(tmp));
202 #ifdef CONFIG_IEEE80211R
203 int wpa_ft_mic(const u8 *kck, size_t kck_len, const u8 *sta_addr,
204 const u8 *ap_addr, u8 transaction_seqnum,
205 const u8 *mdie, size_t mdie_len,
206 const u8 *ftie, size_t ftie_len,
207 const u8 *rsnie, size_t rsnie_len,
208 const u8 *ric, size_t ric_len, u8 *mic)
212 size_t i, num_elem = 0;
216 wpa_printf(MSG_WARNING, "FT: Unsupported KCK length %u",
217 (unsigned int) kck_len);
221 addr[num_elem] = sta_addr;
222 len[num_elem] = ETH_ALEN;
225 addr[num_elem] = ap_addr;
226 len[num_elem] = ETH_ALEN;
229 addr[num_elem] = &transaction_seqnum;
234 addr[num_elem] = rsnie;
235 len[num_elem] = rsnie_len;
239 addr[num_elem] = mdie;
240 len[num_elem] = mdie_len;
244 if (ftie_len < 2 + sizeof(struct rsn_ftie))
247 /* IE hdr and mic_control */
248 addr[num_elem] = ftie;
249 len[num_elem] = 2 + 2;
252 /* MIC field with all zeros */
253 os_memset(zero_mic, 0, sizeof(zero_mic));
254 addr[num_elem] = zero_mic;
255 len[num_elem] = sizeof(zero_mic);
259 addr[num_elem] = ftie + 2 + 2 + 16;
260 len[num_elem] = ftie_len - (2 + 2 + 16);
264 addr[num_elem] = ric;
265 len[num_elem] = ric_len;
269 for (i = 0; i < num_elem; i++)
270 wpa_hexdump(MSG_MSGDUMP, "FT: MIC data", addr[i], len[i]);
271 if (omac1_aes_128_vector(kck, num_elem, addr, len, mic))
278 static int wpa_ft_parse_ftie(const u8 *ie, size_t ie_len,
279 struct wpa_ft_ies *parse)
284 parse->ftie_len = ie_len;
286 pos = ie + sizeof(struct rsn_ftie);
289 while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
291 case FTIE_SUBELEM_R1KH_ID:
292 if (pos[1] != FT_R1KH_ID_LEN) {
293 wpa_printf(MSG_DEBUG, "FT: Invalid R1KH-ID "
294 "length in FTIE: %d", pos[1]);
297 parse->r1kh_id = pos + 2;
299 case FTIE_SUBELEM_GTK:
300 parse->gtk = pos + 2;
301 parse->gtk_len = pos[1];
303 case FTIE_SUBELEM_R0KH_ID:
304 if (pos[1] < 1 || pos[1] > FT_R0KH_ID_MAX_LEN) {
305 wpa_printf(MSG_DEBUG, "FT: Invalid R0KH-ID "
306 "length in FTIE: %d", pos[1]);
309 parse->r0kh_id = pos + 2;
310 parse->r0kh_id_len = pos[1];
312 #ifdef CONFIG_IEEE80211W
313 case FTIE_SUBELEM_IGTK:
314 parse->igtk = pos + 2;
315 parse->igtk_len = pos[1];
317 #endif /* CONFIG_IEEE80211W */
327 int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
328 struct wpa_ft_ies *parse)
331 struct wpa_ie_data data;
333 const struct rsn_ftie *ftie;
334 int prot_ie_count = 0;
336 os_memset(parse, 0, sizeof(*parse));
342 while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
345 parse->rsn = pos + 2;
346 parse->rsn_len = pos[1];
347 ret = wpa_parse_wpa_ie_rsn(parse->rsn - 2,
351 wpa_printf(MSG_DEBUG, "FT: Failed to parse "
355 if (data.num_pmkid == 1 && data.pmkid)
356 parse->rsn_pmkid = data.pmkid;
358 case WLAN_EID_MOBILITY_DOMAIN:
359 if (pos[1] < sizeof(struct rsn_mdie))
361 parse->mdie = pos + 2;
362 parse->mdie_len = pos[1];
364 case WLAN_EID_FAST_BSS_TRANSITION:
365 if (pos[1] < sizeof(*ftie))
367 ftie = (const struct rsn_ftie *) (pos + 2);
368 prot_ie_count = ftie->mic_control[1];
369 if (wpa_ft_parse_ftie(pos + 2, pos[1], parse) < 0)
372 case WLAN_EID_TIMEOUT_INTERVAL:
375 parse->tie = pos + 2;
376 parse->tie_len = pos[1];
378 case WLAN_EID_RIC_DATA:
379 if (parse->ric == NULL)
387 if (prot_ie_count == 0)
388 return 0; /* no MIC */
391 * Check that the protected IE count matches with IEs included in the
400 if (prot_ie_count < 0) {
401 wpa_printf(MSG_DEBUG, "FT: Some required IEs not included in "
402 "the protected IE count");
406 if (prot_ie_count == 0 && parse->ric) {
407 wpa_printf(MSG_DEBUG, "FT: RIC IE(s) in the frame, but not "
408 "included in protected IE count");
412 /* Determine the end of the RIC IE(s) */
414 while (pos && pos + 2 <= end && pos + 2 + pos[1] <= end &&
419 parse->ric_len = pos - parse->ric;
421 wpa_printf(MSG_DEBUG, "FT: %d protected IEs missing from "
422 "frame", (int) prot_ie_count);
428 #endif /* CONFIG_IEEE80211R */
431 static int rsn_selector_to_bitfield(const u8 *s)
433 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NONE)
434 return WPA_CIPHER_NONE;
435 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_TKIP)
436 return WPA_CIPHER_TKIP;
437 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP)
438 return WPA_CIPHER_CCMP;
439 #ifdef CONFIG_IEEE80211W
440 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_AES_128_CMAC)
441 return WPA_CIPHER_AES_128_CMAC;
442 #endif /* CONFIG_IEEE80211W */
443 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP)
444 return WPA_CIPHER_GCMP;
445 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP_256)
446 return WPA_CIPHER_CCMP_256;
447 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP_256)
448 return WPA_CIPHER_GCMP_256;
449 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_128)
450 return WPA_CIPHER_BIP_GMAC_128;
451 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_256)
452 return WPA_CIPHER_BIP_GMAC_256;
453 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_CMAC_256)
454 return WPA_CIPHER_BIP_CMAC_256;
455 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED)
456 return WPA_CIPHER_GTK_NOT_USED;
461 static int rsn_key_mgmt_to_bitfield(const u8 *s)
463 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_UNSPEC_802_1X)
464 return WPA_KEY_MGMT_IEEE8021X;
465 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X)
466 return WPA_KEY_MGMT_PSK;
467 #ifdef CONFIG_IEEE80211R
468 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_802_1X)
469 return WPA_KEY_MGMT_FT_IEEE8021X;
470 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_PSK)
471 return WPA_KEY_MGMT_FT_PSK;
472 #endif /* CONFIG_IEEE80211R */
473 #ifdef CONFIG_IEEE80211W
474 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SHA256)
475 return WPA_KEY_MGMT_IEEE8021X_SHA256;
476 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_SHA256)
477 return WPA_KEY_MGMT_PSK_SHA256;
478 #endif /* CONFIG_IEEE80211W */
480 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_SAE)
481 return WPA_KEY_MGMT_SAE;
482 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_SAE)
483 return WPA_KEY_MGMT_FT_SAE;
484 #endif /* CONFIG_SAE */
485 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B)
486 return WPA_KEY_MGMT_IEEE8021X_SUITE_B;
487 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192)
488 return WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
489 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_OSEN)
490 return WPA_KEY_MGMT_OSEN;
495 int wpa_cipher_valid_group(int cipher)
497 return wpa_cipher_valid_pairwise(cipher) ||
498 cipher == WPA_CIPHER_GTK_NOT_USED;
502 #ifdef CONFIG_IEEE80211W
503 int wpa_cipher_valid_mgmt_group(int cipher)
505 return cipher == WPA_CIPHER_AES_128_CMAC ||
506 cipher == WPA_CIPHER_BIP_GMAC_128 ||
507 cipher == WPA_CIPHER_BIP_GMAC_256 ||
508 cipher == WPA_CIPHER_BIP_CMAC_256;
510 #endif /* CONFIG_IEEE80211W */
514 * wpa_parse_wpa_ie_rsn - Parse RSN IE
515 * @rsn_ie: Buffer containing RSN IE
516 * @rsn_ie_len: RSN IE buffer length (including IE number and length octets)
517 * @data: Pointer to structure that will be filled in with parsed data
518 * Returns: 0 on success, <0 on failure
520 int wpa_parse_wpa_ie_rsn(const u8 *rsn_ie, size_t rsn_ie_len,
521 struct wpa_ie_data *data)
527 os_memset(data, 0, sizeof(*data));
528 data->proto = WPA_PROTO_RSN;
529 data->pairwise_cipher = WPA_CIPHER_CCMP;
530 data->group_cipher = WPA_CIPHER_CCMP;
531 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
532 data->capabilities = 0;
535 #ifdef CONFIG_IEEE80211W
536 data->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
537 #else /* CONFIG_IEEE80211W */
538 data->mgmt_group_cipher = 0;
539 #endif /* CONFIG_IEEE80211W */
541 if (rsn_ie_len == 0) {
542 /* No RSN IE - fail silently */
546 if (rsn_ie_len < sizeof(struct rsn_ie_hdr)) {
547 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
548 __func__, (unsigned long) rsn_ie_len);
552 if (rsn_ie_len >= 6 && rsn_ie[1] >= 4 &&
553 rsn_ie[1] == rsn_ie_len - 2 &&
554 WPA_GET_BE32(&rsn_ie[2]) == OSEN_IE_VENDOR_TYPE) {
556 left = rsn_ie_len - 6;
558 data->proto = WPA_PROTO_OSEN;
560 const struct rsn_ie_hdr *hdr;
562 hdr = (const struct rsn_ie_hdr *) rsn_ie;
564 if (hdr->elem_id != WLAN_EID_RSN ||
565 hdr->len != rsn_ie_len - 2 ||
566 WPA_GET_LE16(hdr->version) != RSN_VERSION) {
567 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
572 pos = (const u8 *) (hdr + 1);
573 left = rsn_ie_len - sizeof(*hdr);
576 if (left >= RSN_SELECTOR_LEN) {
577 data->group_cipher = rsn_selector_to_bitfield(pos);
578 if (!wpa_cipher_valid_group(data->group_cipher)) {
579 wpa_printf(MSG_DEBUG, "%s: invalid group cipher 0x%x",
580 __func__, data->group_cipher);
583 pos += RSN_SELECTOR_LEN;
584 left -= RSN_SELECTOR_LEN;
585 } else if (left > 0) {
586 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
592 data->pairwise_cipher = 0;
593 count = WPA_GET_LE16(pos);
596 if (count == 0 || count > left / RSN_SELECTOR_LEN) {
597 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
598 "count %u left %u", __func__, count, left);
601 for (i = 0; i < count; i++) {
602 data->pairwise_cipher |= rsn_selector_to_bitfield(pos);
603 pos += RSN_SELECTOR_LEN;
604 left -= RSN_SELECTOR_LEN;
606 #ifdef CONFIG_IEEE80211W
607 if (data->pairwise_cipher & WPA_CIPHER_AES_128_CMAC) {
608 wpa_printf(MSG_DEBUG, "%s: AES-128-CMAC used as "
609 "pairwise cipher", __func__);
612 #endif /* CONFIG_IEEE80211W */
613 } else if (left == 1) {
614 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
621 count = WPA_GET_LE16(pos);
624 if (count == 0 || count > left / RSN_SELECTOR_LEN) {
625 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
626 "count %u left %u", __func__, count, left);
629 for (i = 0; i < count; i++) {
630 data->key_mgmt |= rsn_key_mgmt_to_bitfield(pos);
631 pos += RSN_SELECTOR_LEN;
632 left -= RSN_SELECTOR_LEN;
634 } else if (left == 1) {
635 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
641 data->capabilities = WPA_GET_LE16(pos);
647 u16 num_pmkid = WPA_GET_LE16(pos);
650 if (num_pmkid > (unsigned int) left / PMKID_LEN) {
651 wpa_printf(MSG_DEBUG, "%s: PMKID underflow "
652 "(num_pmkid=%u left=%d)",
653 __func__, num_pmkid, left);
657 data->num_pmkid = num_pmkid;
659 pos += data->num_pmkid * PMKID_LEN;
660 left -= data->num_pmkid * PMKID_LEN;
664 #ifdef CONFIG_IEEE80211W
666 data->mgmt_group_cipher = rsn_selector_to_bitfield(pos);
667 if (!wpa_cipher_valid_mgmt_group(data->mgmt_group_cipher)) {
668 wpa_printf(MSG_DEBUG, "%s: Unsupported management "
669 "group cipher 0x%x", __func__,
670 data->mgmt_group_cipher);
673 pos += RSN_SELECTOR_LEN;
674 left -= RSN_SELECTOR_LEN;
676 #endif /* CONFIG_IEEE80211W */
679 wpa_hexdump(MSG_DEBUG,
680 "wpa_parse_wpa_ie_rsn: ignore trailing bytes",
688 static int wpa_selector_to_bitfield(const u8 *s)
690 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_NONE)
691 return WPA_CIPHER_NONE;
692 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_TKIP)
693 return WPA_CIPHER_TKIP;
694 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_CCMP)
695 return WPA_CIPHER_CCMP;
700 static int wpa_key_mgmt_to_bitfield(const u8 *s)
702 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_UNSPEC_802_1X)
703 return WPA_KEY_MGMT_IEEE8021X;
704 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X)
705 return WPA_KEY_MGMT_PSK;
706 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_NONE)
707 return WPA_KEY_MGMT_WPA_NONE;
712 int wpa_parse_wpa_ie_wpa(const u8 *wpa_ie, size_t wpa_ie_len,
713 struct wpa_ie_data *data)
715 const struct wpa_ie_hdr *hdr;
720 os_memset(data, 0, sizeof(*data));
721 data->proto = WPA_PROTO_WPA;
722 data->pairwise_cipher = WPA_CIPHER_TKIP;
723 data->group_cipher = WPA_CIPHER_TKIP;
724 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
725 data->capabilities = 0;
728 data->mgmt_group_cipher = 0;
730 if (wpa_ie_len < sizeof(struct wpa_ie_hdr)) {
731 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
732 __func__, (unsigned long) wpa_ie_len);
736 hdr = (const struct wpa_ie_hdr *) wpa_ie;
738 if (hdr->elem_id != WLAN_EID_VENDOR_SPECIFIC ||
739 hdr->len != wpa_ie_len - 2 ||
740 RSN_SELECTOR_GET(hdr->oui) != WPA_OUI_TYPE ||
741 WPA_GET_LE16(hdr->version) != WPA_VERSION) {
742 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
747 pos = (const u8 *) (hdr + 1);
748 left = wpa_ie_len - sizeof(*hdr);
750 if (left >= WPA_SELECTOR_LEN) {
751 data->group_cipher = wpa_selector_to_bitfield(pos);
752 pos += WPA_SELECTOR_LEN;
753 left -= WPA_SELECTOR_LEN;
754 } else if (left > 0) {
755 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
761 data->pairwise_cipher = 0;
762 count = WPA_GET_LE16(pos);
765 if (count == 0 || count > left / WPA_SELECTOR_LEN) {
766 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
767 "count %u left %u", __func__, count, left);
770 for (i = 0; i < count; i++) {
771 data->pairwise_cipher |= wpa_selector_to_bitfield(pos);
772 pos += WPA_SELECTOR_LEN;
773 left -= WPA_SELECTOR_LEN;
775 } else if (left == 1) {
776 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
783 count = WPA_GET_LE16(pos);
786 if (count == 0 || count > left / WPA_SELECTOR_LEN) {
787 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
788 "count %u left %u", __func__, count, left);
791 for (i = 0; i < count; i++) {
792 data->key_mgmt |= wpa_key_mgmt_to_bitfield(pos);
793 pos += WPA_SELECTOR_LEN;
794 left -= WPA_SELECTOR_LEN;
796 } else if (left == 1) {
797 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
803 data->capabilities = WPA_GET_LE16(pos);
809 wpa_hexdump(MSG_DEBUG,
810 "wpa_parse_wpa_ie_wpa: ignore trailing bytes",
818 #ifdef CONFIG_IEEE80211R
821 * wpa_derive_pmk_r0 - Derive PMK-R0 and PMKR0Name
823 * IEEE Std 802.11r-2008 - 8.5.1.5.3
825 void wpa_derive_pmk_r0(const u8 *xxkey, size_t xxkey_len,
826 const u8 *ssid, size_t ssid_len,
827 const u8 *mdid, const u8 *r0kh_id, size_t r0kh_id_len,
828 const u8 *s0kh_id, u8 *pmk_r0, u8 *pmk_r0_name)
830 u8 buf[1 + SSID_MAX_LEN + MOBILITY_DOMAIN_ID_LEN + 1 +
831 FT_R0KH_ID_MAX_LEN + ETH_ALEN];
832 u8 *pos, r0_key_data[48], hash[32];
837 * R0-Key-Data = KDF-384(XXKey, "FT-R0",
838 * SSIDlength || SSID || MDID || R0KHlength ||
839 * R0KH-ID || S0KH-ID)
840 * XXKey is either the second 256 bits of MSK or PSK.
841 * PMK-R0 = L(R0-Key-Data, 0, 256)
842 * PMK-R0Name-Salt = L(R0-Key-Data, 256, 128)
844 if (ssid_len > SSID_MAX_LEN || r0kh_id_len > FT_R0KH_ID_MAX_LEN)
848 os_memcpy(pos, ssid, ssid_len);
850 os_memcpy(pos, mdid, MOBILITY_DOMAIN_ID_LEN);
851 pos += MOBILITY_DOMAIN_ID_LEN;
852 *pos++ = r0kh_id_len;
853 os_memcpy(pos, r0kh_id, r0kh_id_len);
855 os_memcpy(pos, s0kh_id, ETH_ALEN);
858 sha256_prf(xxkey, xxkey_len, "FT-R0", buf, pos - buf,
859 r0_key_data, sizeof(r0_key_data));
860 os_memcpy(pmk_r0, r0_key_data, PMK_LEN);
863 * PMKR0Name = Truncate-128(SHA-256("FT-R0N" || PMK-R0Name-Salt)
865 addr[0] = (const u8 *) "FT-R0N";
867 addr[1] = r0_key_data + PMK_LEN;
870 sha256_vector(2, addr, len, hash);
871 os_memcpy(pmk_r0_name, hash, WPA_PMK_NAME_LEN);
876 * wpa_derive_pmk_r1_name - Derive PMKR1Name
878 * IEEE Std 802.11r-2008 - 8.5.1.5.4
880 void wpa_derive_pmk_r1_name(const u8 *pmk_r0_name, const u8 *r1kh_id,
881 const u8 *s1kh_id, u8 *pmk_r1_name)
888 * PMKR1Name = Truncate-128(SHA-256("FT-R1N" || PMKR0Name ||
889 * R1KH-ID || S1KH-ID))
891 addr[0] = (const u8 *) "FT-R1N";
893 addr[1] = pmk_r0_name;
894 len[1] = WPA_PMK_NAME_LEN;
896 len[2] = FT_R1KH_ID_LEN;
900 sha256_vector(4, addr, len, hash);
901 os_memcpy(pmk_r1_name, hash, WPA_PMK_NAME_LEN);
906 * wpa_derive_pmk_r1 - Derive PMK-R1 and PMKR1Name from PMK-R0
908 * IEEE Std 802.11r-2008 - 8.5.1.5.4
910 void wpa_derive_pmk_r1(const u8 *pmk_r0, const u8 *pmk_r0_name,
911 const u8 *r1kh_id, const u8 *s1kh_id,
912 u8 *pmk_r1, u8 *pmk_r1_name)
914 u8 buf[FT_R1KH_ID_LEN + ETH_ALEN];
917 /* PMK-R1 = KDF-256(PMK-R0, "FT-R1", R1KH-ID || S1KH-ID) */
919 os_memcpy(pos, r1kh_id, FT_R1KH_ID_LEN);
920 pos += FT_R1KH_ID_LEN;
921 os_memcpy(pos, s1kh_id, ETH_ALEN);
924 sha256_prf(pmk_r0, PMK_LEN, "FT-R1", buf, pos - buf, pmk_r1, PMK_LEN);
926 wpa_derive_pmk_r1_name(pmk_r0_name, r1kh_id, s1kh_id, pmk_r1_name);
931 * wpa_pmk_r1_to_ptk - Derive PTK and PTKName from PMK-R1
933 * IEEE Std 802.11r-2008 - 8.5.1.5.5
935 int wpa_pmk_r1_to_ptk(const u8 *pmk_r1, const u8 *snonce, const u8 *anonce,
936 const u8 *sta_addr, const u8 *bssid,
937 const u8 *pmk_r1_name,
938 struct wpa_ptk *ptk, u8 *ptk_name, int akmp, int cipher)
940 u8 buf[2 * WPA_NONCE_LEN + 2 * ETH_ALEN];
944 u8 tmp[WPA_KCK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN];
948 * PTK = KDF-PTKLen(PMK-R1, "FT-PTK", SNonce || ANonce ||
952 os_memcpy(pos, snonce, WPA_NONCE_LEN);
953 pos += WPA_NONCE_LEN;
954 os_memcpy(pos, anonce, WPA_NONCE_LEN);
955 pos += WPA_NONCE_LEN;
956 os_memcpy(pos, bssid, ETH_ALEN);
958 os_memcpy(pos, sta_addr, ETH_ALEN);
961 ptk->kck_len = wpa_kck_len(akmp);
962 ptk->kek_len = wpa_kek_len(akmp);
963 ptk->tk_len = wpa_cipher_key_len(cipher);
964 ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len;
966 sha256_prf(pmk_r1, PMK_LEN, "FT-PTK", buf, pos - buf, tmp, ptk_len);
969 * PTKName = Truncate-128(SHA-256(PMKR1Name || "FT-PTKN" || SNonce ||
970 * ANonce || BSSID || STA-ADDR))
972 addr[0] = pmk_r1_name;
973 len[0] = WPA_PMK_NAME_LEN;
974 addr[1] = (const u8 *) "FT-PTKN";
977 len[2] = WPA_NONCE_LEN;
979 len[3] = WPA_NONCE_LEN;
985 sha256_vector(6, addr, len, hash);
986 os_memcpy(ptk_name, hash, WPA_PMK_NAME_LEN);
988 os_memcpy(ptk->kck, tmp, ptk->kck_len);
989 os_memcpy(ptk->kek, tmp + ptk->kck_len, ptk->kek_len);
990 os_memcpy(ptk->tk, tmp + ptk->kck_len + ptk->kek_len, ptk->tk_len);
992 wpa_hexdump_key(MSG_DEBUG, "FT: KCK", ptk->kck, ptk->kck_len);
993 wpa_hexdump_key(MSG_DEBUG, "FT: KEK", ptk->kek, ptk->kek_len);
994 wpa_hexdump_key(MSG_DEBUG, "FT: TK", ptk->tk, ptk->tk_len);
995 wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN);
997 os_memset(tmp, 0, sizeof(tmp));
1002 #endif /* CONFIG_IEEE80211R */
1006 * rsn_pmkid - Calculate PMK identifier
1007 * @pmk: Pairwise master key
1008 * @pmk_len: Length of pmk in bytes
1009 * @aa: Authenticator address
1010 * @spa: Supplicant address
1011 * @pmkid: Buffer for PMKID
1012 * @use_sha256: Whether to use SHA256-based KDF
1014 * IEEE Std 802.11i-2004 - 8.5.1.2 Pairwise key hierarchy
1015 * PMKID = HMAC-SHA1-128(PMK, "PMK Name" || AA || SPA)
1017 void rsn_pmkid(const u8 *pmk, size_t pmk_len, const u8 *aa, const u8 *spa,
1018 u8 *pmkid, int use_sha256)
1020 char *title = "PMK Name";
1022 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1023 unsigned char hash[SHA256_MAC_LEN];
1025 addr[0] = (u8 *) title;
1029 #ifdef CONFIG_IEEE80211W
1031 hmac_sha256_vector(pmk, pmk_len, 3, addr, len, hash);
1033 #endif /* CONFIG_IEEE80211W */
1034 hmac_sha1_vector(pmk, pmk_len, 3, addr, len, hash);
1035 os_memcpy(pmkid, hash, PMKID_LEN);
1039 #ifdef CONFIG_SUITEB
1041 * rsn_pmkid_suite_b - Calculate PMK identifier for Suite B AKM
1042 * @kck: Key confirmation key
1043 * @kck_len: Length of kck in bytes
1044 * @aa: Authenticator address
1045 * @spa: Supplicant address
1046 * @pmkid: Buffer for PMKID
1047 * Returns: 0 on success, -1 on failure
1049 * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
1050 * PMKID = Truncate(HMAC-SHA-256(KCK, "PMK Name" || AA || SPA))
1052 int rsn_pmkid_suite_b(const u8 *kck, size_t kck_len, const u8 *aa,
1053 const u8 *spa, u8 *pmkid)
1055 char *title = "PMK Name";
1057 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1058 unsigned char hash[SHA256_MAC_LEN];
1060 addr[0] = (u8 *) title;
1064 if (hmac_sha256_vector(kck, kck_len, 3, addr, len, hash) < 0)
1066 os_memcpy(pmkid, hash, PMKID_LEN);
1069 #endif /* CONFIG_SUITEB */
1072 #ifdef CONFIG_SUITEB192
1074 * rsn_pmkid_suite_b_192 - Calculate PMK identifier for Suite B AKM
1075 * @kck: Key confirmation key
1076 * @kck_len: Length of kck in bytes
1077 * @aa: Authenticator address
1078 * @spa: Supplicant address
1079 * @pmkid: Buffer for PMKID
1080 * Returns: 0 on success, -1 on failure
1082 * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
1083 * PMKID = Truncate(HMAC-SHA-384(KCK, "PMK Name" || AA || SPA))
1085 int rsn_pmkid_suite_b_192(const u8 *kck, size_t kck_len, const u8 *aa,
1086 const u8 *spa, u8 *pmkid)
1088 char *title = "PMK Name";
1090 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1091 unsigned char hash[SHA384_MAC_LEN];
1093 addr[0] = (u8 *) title;
1097 if (hmac_sha384_vector(kck, kck_len, 3, addr, len, hash) < 0)
1099 os_memcpy(pmkid, hash, PMKID_LEN);
1102 #endif /* CONFIG_SUITEB192 */
1106 * wpa_cipher_txt - Convert cipher suite to a text string
1107 * @cipher: Cipher suite (WPA_CIPHER_* enum)
1108 * Returns: Pointer to a text string of the cipher suite name
1110 const char * wpa_cipher_txt(int cipher)
1113 case WPA_CIPHER_NONE:
1115 case WPA_CIPHER_WEP40:
1117 case WPA_CIPHER_WEP104:
1119 case WPA_CIPHER_TKIP:
1121 case WPA_CIPHER_CCMP:
1123 case WPA_CIPHER_CCMP | WPA_CIPHER_TKIP:
1125 case WPA_CIPHER_GCMP:
1127 case WPA_CIPHER_GCMP_256:
1129 case WPA_CIPHER_CCMP_256:
1131 case WPA_CIPHER_GTK_NOT_USED:
1132 return "GTK_NOT_USED";
1140 * wpa_key_mgmt_txt - Convert key management suite to a text string
1141 * @key_mgmt: Key management suite (WPA_KEY_MGMT_* enum)
1142 * @proto: WPA/WPA2 version (WPA_PROTO_*)
1143 * Returns: Pointer to a text string of the key management suite name
1145 const char * wpa_key_mgmt_txt(int key_mgmt, int proto)
1148 case WPA_KEY_MGMT_IEEE8021X:
1149 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
1150 return "WPA2+WPA/IEEE 802.1X/EAP";
1151 return proto == WPA_PROTO_RSN ?
1152 "WPA2/IEEE 802.1X/EAP" : "WPA/IEEE 802.1X/EAP";
1153 case WPA_KEY_MGMT_PSK:
1154 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
1155 return "WPA2-PSK+WPA-PSK";
1156 return proto == WPA_PROTO_RSN ?
1157 "WPA2-PSK" : "WPA-PSK";
1158 case WPA_KEY_MGMT_NONE:
1160 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
1161 return "IEEE 802.1X (no WPA)";
1162 #ifdef CONFIG_IEEE80211R
1163 case WPA_KEY_MGMT_FT_IEEE8021X:
1165 case WPA_KEY_MGMT_FT_PSK:
1167 #endif /* CONFIG_IEEE80211R */
1168 #ifdef CONFIG_IEEE80211W
1169 case WPA_KEY_MGMT_IEEE8021X_SHA256:
1170 return "WPA2-EAP-SHA256";
1171 case WPA_KEY_MGMT_PSK_SHA256:
1172 return "WPA2-PSK-SHA256";
1173 #endif /* CONFIG_IEEE80211W */
1174 case WPA_KEY_MGMT_WPS:
1176 case WPA_KEY_MGMT_SAE:
1178 case WPA_KEY_MGMT_FT_SAE:
1180 case WPA_KEY_MGMT_OSEN:
1182 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
1183 return "WPA2-EAP-SUITE-B";
1184 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
1185 return "WPA2-EAP-SUITE-B-192";
1192 u32 wpa_akm_to_suite(int akm)
1194 if (akm & WPA_KEY_MGMT_FT_IEEE8021X)
1195 return WLAN_AKM_SUITE_FT_8021X;
1196 if (akm & WPA_KEY_MGMT_FT_PSK)
1197 return WLAN_AKM_SUITE_FT_PSK;
1198 if (akm & WPA_KEY_MGMT_IEEE8021X)
1199 return WLAN_AKM_SUITE_8021X;
1200 if (akm & WPA_KEY_MGMT_IEEE8021X_SHA256)
1201 return WLAN_AKM_SUITE_8021X_SHA256;
1202 if (akm & WPA_KEY_MGMT_IEEE8021X)
1203 return WLAN_AKM_SUITE_8021X;
1204 if (akm & WPA_KEY_MGMT_PSK_SHA256)
1205 return WLAN_AKM_SUITE_PSK_SHA256;
1206 if (akm & WPA_KEY_MGMT_PSK)
1207 return WLAN_AKM_SUITE_PSK;
1208 if (akm & WPA_KEY_MGMT_CCKM)
1209 return WLAN_AKM_SUITE_CCKM;
1210 if (akm & WPA_KEY_MGMT_OSEN)
1211 return WLAN_AKM_SUITE_OSEN;
1212 if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B)
1213 return WLAN_AKM_SUITE_8021X_SUITE_B;
1214 if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
1215 return WLAN_AKM_SUITE_8021X_SUITE_B_192;
1220 int wpa_compare_rsn_ie(int ft_initial_assoc,
1221 const u8 *ie1, size_t ie1len,
1222 const u8 *ie2, size_t ie2len)
1224 if (ie1 == NULL || ie2 == NULL)
1227 if (ie1len == ie2len && os_memcmp(ie1, ie2, ie1len) == 0)
1228 return 0; /* identical IEs */
1230 #ifdef CONFIG_IEEE80211R
1231 if (ft_initial_assoc) {
1232 struct wpa_ie_data ie1d, ie2d;
1234 * The PMKID-List in RSN IE is different between Beacon/Probe
1235 * Response/(Re)Association Request frames and EAPOL-Key
1236 * messages in FT initial mobility domain association. Allow
1237 * for this, but verify that other parts of the RSN IEs are
1240 if (wpa_parse_wpa_ie_rsn(ie1, ie1len, &ie1d) < 0 ||
1241 wpa_parse_wpa_ie_rsn(ie2, ie2len, &ie2d) < 0)
1243 if (ie1d.proto == ie2d.proto &&
1244 ie1d.pairwise_cipher == ie2d.pairwise_cipher &&
1245 ie1d.group_cipher == ie2d.group_cipher &&
1246 ie1d.key_mgmt == ie2d.key_mgmt &&
1247 ie1d.capabilities == ie2d.capabilities &&
1248 ie1d.mgmt_group_cipher == ie2d.mgmt_group_cipher)
1251 #endif /* CONFIG_IEEE80211R */
1257 #ifdef CONFIG_IEEE80211R
1258 int wpa_insert_pmkid(u8 *ies, size_t ies_len, const u8 *pmkid)
1260 u8 *start, *end, *rpos, *rend;
1264 end = ies + ies_len;
1266 while (start < end) {
1267 if (*start == WLAN_EID_RSN)
1269 start += 2 + start[1];
1272 wpa_printf(MSG_ERROR, "FT: Could not find RSN IE in "
1276 wpa_hexdump(MSG_DEBUG, "FT: RSN IE before modification",
1277 start, 2 + start[1]);
1279 /* Find start of PMKID-Count */
1281 rend = rpos + start[1];
1283 /* Skip Version and Group Data Cipher Suite */
1285 /* Skip Pairwise Cipher Suite Count and List */
1286 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
1287 /* Skip AKM Suite Count and List */
1288 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
1291 /* Add RSN Capabilities */
1292 os_memmove(rpos + 2, rpos, end - rpos);
1299 /* Skip RSN Capabilities */
1302 wpa_printf(MSG_ERROR, "FT: Could not parse RSN IE in "
1309 /* No PMKID-Count field included; add it */
1310 os_memmove(rpos + 2 + PMKID_LEN, rpos, end + added - rpos);
1311 WPA_PUT_LE16(rpos, 1);
1313 os_memcpy(rpos, pmkid, PMKID_LEN);
1314 added += 2 + PMKID_LEN;
1315 start[1] += 2 + PMKID_LEN;
1317 /* PMKID-Count was included; use it */
1318 if (WPA_GET_LE16(rpos) != 0) {
1319 wpa_printf(MSG_ERROR, "FT: Unexpected PMKID "
1320 "in RSN IE in EAPOL-Key data");
1323 WPA_PUT_LE16(rpos, 1);
1325 os_memmove(rpos + PMKID_LEN, rpos, end + added - rpos);
1326 os_memcpy(rpos, pmkid, PMKID_LEN);
1328 start[1] += PMKID_LEN;
1331 wpa_hexdump(MSG_DEBUG, "FT: RSN IE after modification "
1332 "(PMKID inserted)", start, 2 + start[1]);
1336 #endif /* CONFIG_IEEE80211R */
1339 int wpa_cipher_key_len(int cipher)
1342 case WPA_CIPHER_CCMP_256:
1343 case WPA_CIPHER_GCMP_256:
1344 case WPA_CIPHER_BIP_GMAC_256:
1345 case WPA_CIPHER_BIP_CMAC_256:
1347 case WPA_CIPHER_CCMP:
1348 case WPA_CIPHER_GCMP:
1349 case WPA_CIPHER_AES_128_CMAC:
1350 case WPA_CIPHER_BIP_GMAC_128:
1352 case WPA_CIPHER_TKIP:
1360 int wpa_cipher_rsc_len(int cipher)
1363 case WPA_CIPHER_CCMP_256:
1364 case WPA_CIPHER_GCMP_256:
1365 case WPA_CIPHER_CCMP:
1366 case WPA_CIPHER_GCMP:
1367 case WPA_CIPHER_TKIP:
1375 int wpa_cipher_to_alg(int cipher)
1378 case WPA_CIPHER_CCMP_256:
1379 return WPA_ALG_CCMP_256;
1380 case WPA_CIPHER_GCMP_256:
1381 return WPA_ALG_GCMP_256;
1382 case WPA_CIPHER_CCMP:
1383 return WPA_ALG_CCMP;
1384 case WPA_CIPHER_GCMP:
1385 return WPA_ALG_GCMP;
1386 case WPA_CIPHER_TKIP:
1387 return WPA_ALG_TKIP;
1388 case WPA_CIPHER_AES_128_CMAC:
1389 return WPA_ALG_IGTK;
1390 case WPA_CIPHER_BIP_GMAC_128:
1391 return WPA_ALG_BIP_GMAC_128;
1392 case WPA_CIPHER_BIP_GMAC_256:
1393 return WPA_ALG_BIP_GMAC_256;
1394 case WPA_CIPHER_BIP_CMAC_256:
1395 return WPA_ALG_BIP_CMAC_256;
1397 return WPA_ALG_NONE;
1401 int wpa_cipher_valid_pairwise(int cipher)
1403 return cipher == WPA_CIPHER_CCMP_256 ||
1404 cipher == WPA_CIPHER_GCMP_256 ||
1405 cipher == WPA_CIPHER_CCMP ||
1406 cipher == WPA_CIPHER_GCMP ||
1407 cipher == WPA_CIPHER_TKIP;
1411 u32 wpa_cipher_to_suite(int proto, int cipher)
1413 if (cipher & WPA_CIPHER_CCMP_256)
1414 return RSN_CIPHER_SUITE_CCMP_256;
1415 if (cipher & WPA_CIPHER_GCMP_256)
1416 return RSN_CIPHER_SUITE_GCMP_256;
1417 if (cipher & WPA_CIPHER_CCMP)
1418 return (proto == WPA_PROTO_RSN ?
1419 RSN_CIPHER_SUITE_CCMP : WPA_CIPHER_SUITE_CCMP);
1420 if (cipher & WPA_CIPHER_GCMP)
1421 return RSN_CIPHER_SUITE_GCMP;
1422 if (cipher & WPA_CIPHER_TKIP)
1423 return (proto == WPA_PROTO_RSN ?
1424 RSN_CIPHER_SUITE_TKIP : WPA_CIPHER_SUITE_TKIP);
1425 if (cipher & WPA_CIPHER_NONE)
1426 return (proto == WPA_PROTO_RSN ?
1427 RSN_CIPHER_SUITE_NONE : WPA_CIPHER_SUITE_NONE);
1428 if (cipher & WPA_CIPHER_GTK_NOT_USED)
1429 return RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED;
1430 if (cipher & WPA_CIPHER_AES_128_CMAC)
1431 return RSN_CIPHER_SUITE_AES_128_CMAC;
1432 if (cipher & WPA_CIPHER_BIP_GMAC_128)
1433 return RSN_CIPHER_SUITE_BIP_GMAC_128;
1434 if (cipher & WPA_CIPHER_BIP_GMAC_256)
1435 return RSN_CIPHER_SUITE_BIP_GMAC_256;
1436 if (cipher & WPA_CIPHER_BIP_CMAC_256)
1437 return RSN_CIPHER_SUITE_BIP_CMAC_256;
1442 int rsn_cipher_put_suites(u8 *start, int ciphers)
1446 if (ciphers & WPA_CIPHER_CCMP_256) {
1447 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP_256);
1448 pos += RSN_SELECTOR_LEN;
1450 if (ciphers & WPA_CIPHER_GCMP_256) {
1451 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP_256);
1452 pos += RSN_SELECTOR_LEN;
1454 if (ciphers & WPA_CIPHER_CCMP) {
1455 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP);
1456 pos += RSN_SELECTOR_LEN;
1458 if (ciphers & WPA_CIPHER_GCMP) {
1459 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP);
1460 pos += RSN_SELECTOR_LEN;
1462 if (ciphers & WPA_CIPHER_TKIP) {
1463 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_TKIP);
1464 pos += RSN_SELECTOR_LEN;
1466 if (ciphers & WPA_CIPHER_NONE) {
1467 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NONE);
1468 pos += RSN_SELECTOR_LEN;
1471 return (pos - start) / RSN_SELECTOR_LEN;
1475 int wpa_cipher_put_suites(u8 *start, int ciphers)
1479 if (ciphers & WPA_CIPHER_CCMP) {
1480 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_CCMP);
1481 pos += WPA_SELECTOR_LEN;
1483 if (ciphers & WPA_CIPHER_TKIP) {
1484 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_TKIP);
1485 pos += WPA_SELECTOR_LEN;
1487 if (ciphers & WPA_CIPHER_NONE) {
1488 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_NONE);
1489 pos += WPA_SELECTOR_LEN;
1492 return (pos - start) / RSN_SELECTOR_LEN;
1496 int wpa_pick_pairwise_cipher(int ciphers, int none_allowed)
1498 if (ciphers & WPA_CIPHER_CCMP_256)
1499 return WPA_CIPHER_CCMP_256;
1500 if (ciphers & WPA_CIPHER_GCMP_256)
1501 return WPA_CIPHER_GCMP_256;
1502 if (ciphers & WPA_CIPHER_CCMP)
1503 return WPA_CIPHER_CCMP;
1504 if (ciphers & WPA_CIPHER_GCMP)
1505 return WPA_CIPHER_GCMP;
1506 if (ciphers & WPA_CIPHER_TKIP)
1507 return WPA_CIPHER_TKIP;
1508 if (none_allowed && (ciphers & WPA_CIPHER_NONE))
1509 return WPA_CIPHER_NONE;
1514 int wpa_pick_group_cipher(int ciphers)
1516 if (ciphers & WPA_CIPHER_CCMP_256)
1517 return WPA_CIPHER_CCMP_256;
1518 if (ciphers & WPA_CIPHER_GCMP_256)
1519 return WPA_CIPHER_GCMP_256;
1520 if (ciphers & WPA_CIPHER_CCMP)
1521 return WPA_CIPHER_CCMP;
1522 if (ciphers & WPA_CIPHER_GCMP)
1523 return WPA_CIPHER_GCMP;
1524 if (ciphers & WPA_CIPHER_GTK_NOT_USED)
1525 return WPA_CIPHER_GTK_NOT_USED;
1526 if (ciphers & WPA_CIPHER_TKIP)
1527 return WPA_CIPHER_TKIP;
1532 int wpa_parse_cipher(const char *value)
1535 char *start, *end, *buf;
1537 buf = os_strdup(value);
1542 while (*start != '\0') {
1543 while (*start == ' ' || *start == '\t')
1548 while (*end != ' ' && *end != '\t' && *end != '\0')
1550 last = *end == '\0';
1552 if (os_strcmp(start, "CCMP-256") == 0)
1553 val |= WPA_CIPHER_CCMP_256;
1554 else if (os_strcmp(start, "GCMP-256") == 0)
1555 val |= WPA_CIPHER_GCMP_256;
1556 else if (os_strcmp(start, "CCMP") == 0)
1557 val |= WPA_CIPHER_CCMP;
1558 else if (os_strcmp(start, "GCMP") == 0)
1559 val |= WPA_CIPHER_GCMP;
1560 else if (os_strcmp(start, "TKIP") == 0)
1561 val |= WPA_CIPHER_TKIP;
1562 else if (os_strcmp(start, "WEP104") == 0)
1563 val |= WPA_CIPHER_WEP104;
1564 else if (os_strcmp(start, "WEP40") == 0)
1565 val |= WPA_CIPHER_WEP40;
1566 else if (os_strcmp(start, "NONE") == 0)
1567 val |= WPA_CIPHER_NONE;
1568 else if (os_strcmp(start, "GTK_NOT_USED") == 0)
1569 val |= WPA_CIPHER_GTK_NOT_USED;
1585 int wpa_write_ciphers(char *start, char *end, int ciphers, const char *delim)
1590 if (ciphers & WPA_CIPHER_CCMP_256) {
1591 ret = os_snprintf(pos, end - pos, "%sCCMP-256",
1592 pos == start ? "" : delim);
1593 if (os_snprintf_error(end - pos, ret))
1597 if (ciphers & WPA_CIPHER_GCMP_256) {
1598 ret = os_snprintf(pos, end - pos, "%sGCMP-256",
1599 pos == start ? "" : delim);
1600 if (os_snprintf_error(end - pos, ret))
1604 if (ciphers & WPA_CIPHER_CCMP) {
1605 ret = os_snprintf(pos, end - pos, "%sCCMP",
1606 pos == start ? "" : delim);
1607 if (os_snprintf_error(end - pos, ret))
1611 if (ciphers & WPA_CIPHER_GCMP) {
1612 ret = os_snprintf(pos, end - pos, "%sGCMP",
1613 pos == start ? "" : delim);
1614 if (os_snprintf_error(end - pos, ret))
1618 if (ciphers & WPA_CIPHER_TKIP) {
1619 ret = os_snprintf(pos, end - pos, "%sTKIP",
1620 pos == start ? "" : delim);
1621 if (os_snprintf_error(end - pos, ret))
1625 if (ciphers & WPA_CIPHER_NONE) {
1626 ret = os_snprintf(pos, end - pos, "%sNONE",
1627 pos == start ? "" : delim);
1628 if (os_snprintf_error(end - pos, ret))
1637 int wpa_select_ap_group_cipher(int wpa, int wpa_pairwise, int rsn_pairwise)
1641 /* Select group cipher based on the enabled pairwise cipher suites */
1643 pairwise |= wpa_pairwise;
1645 pairwise |= rsn_pairwise;
1647 if (pairwise & WPA_CIPHER_TKIP)
1648 return WPA_CIPHER_TKIP;
1649 if ((pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP)
1650 return WPA_CIPHER_GCMP;
1651 if ((pairwise & (WPA_CIPHER_GCMP_256 | WPA_CIPHER_CCMP |
1652 WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP_256)
1653 return WPA_CIPHER_GCMP_256;
1654 if ((pairwise & (WPA_CIPHER_CCMP_256 | WPA_CIPHER_CCMP |
1655 WPA_CIPHER_GCMP)) == WPA_CIPHER_CCMP_256)
1656 return WPA_CIPHER_CCMP_256;
1657 return WPA_CIPHER_CCMP;