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)
214 wpa_printf(MSG_WARNING, "FT: Unsupported KCK length %u",
215 (unsigned int) kck_len);
219 buf_len = 2 * ETH_ALEN + 1 + mdie_len + ftie_len + rsnie_len + ric_len;
220 buf = os_malloc(buf_len);
225 os_memcpy(pos, sta_addr, ETH_ALEN);
227 os_memcpy(pos, ap_addr, ETH_ALEN);
229 *pos++ = transaction_seqnum;
231 os_memcpy(pos, rsnie, rsnie_len);
235 os_memcpy(pos, mdie, mdie_len);
239 struct rsn_ftie *_ftie;
240 os_memcpy(pos, ftie, ftie_len);
241 if (ftie_len < 2 + sizeof(*_ftie)) {
245 _ftie = (struct rsn_ftie *) (pos + 2);
246 os_memset(_ftie->mic, 0, sizeof(_ftie->mic));
250 os_memcpy(pos, ric, ric_len);
254 wpa_hexdump(MSG_MSGDUMP, "FT: MIC data", buf, pos - buf);
255 if (omac1_aes_128(kck, buf, pos - buf, mic)) {
266 static int wpa_ft_parse_ftie(const u8 *ie, size_t ie_len,
267 struct wpa_ft_ies *parse)
272 parse->ftie_len = ie_len;
274 pos = ie + sizeof(struct rsn_ftie);
277 while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
279 case FTIE_SUBELEM_R1KH_ID:
280 if (pos[1] != FT_R1KH_ID_LEN) {
281 wpa_printf(MSG_DEBUG, "FT: Invalid R1KH-ID "
282 "length in FTIE: %d", pos[1]);
285 parse->r1kh_id = pos + 2;
287 case FTIE_SUBELEM_GTK:
288 parse->gtk = pos + 2;
289 parse->gtk_len = pos[1];
291 case FTIE_SUBELEM_R0KH_ID:
292 if (pos[1] < 1 || pos[1] > FT_R0KH_ID_MAX_LEN) {
293 wpa_printf(MSG_DEBUG, "FT: Invalid R0KH-ID "
294 "length in FTIE: %d", pos[1]);
297 parse->r0kh_id = pos + 2;
298 parse->r0kh_id_len = pos[1];
300 #ifdef CONFIG_IEEE80211W
301 case FTIE_SUBELEM_IGTK:
302 parse->igtk = pos + 2;
303 parse->igtk_len = pos[1];
305 #endif /* CONFIG_IEEE80211W */
315 int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
316 struct wpa_ft_ies *parse)
319 struct wpa_ie_data data;
321 const struct rsn_ftie *ftie;
322 int prot_ie_count = 0;
324 os_memset(parse, 0, sizeof(*parse));
330 while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
333 parse->rsn = pos + 2;
334 parse->rsn_len = pos[1];
335 ret = wpa_parse_wpa_ie_rsn(parse->rsn - 2,
339 wpa_printf(MSG_DEBUG, "FT: Failed to parse "
343 if (data.num_pmkid == 1 && data.pmkid)
344 parse->rsn_pmkid = data.pmkid;
346 case WLAN_EID_MOBILITY_DOMAIN:
347 parse->mdie = pos + 2;
348 parse->mdie_len = pos[1];
350 case WLAN_EID_FAST_BSS_TRANSITION:
351 if (pos[1] < sizeof(*ftie))
353 ftie = (const struct rsn_ftie *) (pos + 2);
354 prot_ie_count = ftie->mic_control[1];
355 if (wpa_ft_parse_ftie(pos + 2, pos[1], parse) < 0)
358 case WLAN_EID_TIMEOUT_INTERVAL:
359 parse->tie = pos + 2;
360 parse->tie_len = pos[1];
362 case WLAN_EID_RIC_DATA:
363 if (parse->ric == NULL)
371 if (prot_ie_count == 0)
372 return 0; /* no MIC */
375 * Check that the protected IE count matches with IEs included in the
384 if (prot_ie_count < 0) {
385 wpa_printf(MSG_DEBUG, "FT: Some required IEs not included in "
386 "the protected IE count");
390 if (prot_ie_count == 0 && parse->ric) {
391 wpa_printf(MSG_DEBUG, "FT: RIC IE(s) in the frame, but not "
392 "included in protected IE count");
396 /* Determine the end of the RIC IE(s) */
398 while (pos && pos + 2 <= end && pos + 2 + pos[1] <= end &&
403 parse->ric_len = pos - parse->ric;
405 wpa_printf(MSG_DEBUG, "FT: %d protected IEs missing from "
406 "frame", (int) prot_ie_count);
412 #endif /* CONFIG_IEEE80211R */
415 static int rsn_selector_to_bitfield(const u8 *s)
417 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NONE)
418 return WPA_CIPHER_NONE;
419 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_WEP40)
420 return WPA_CIPHER_WEP40;
421 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_TKIP)
422 return WPA_CIPHER_TKIP;
423 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP)
424 return WPA_CIPHER_CCMP;
425 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_WEP104)
426 return WPA_CIPHER_WEP104;
427 #ifdef CONFIG_IEEE80211W
428 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_AES_128_CMAC)
429 return WPA_CIPHER_AES_128_CMAC;
430 #endif /* CONFIG_IEEE80211W */
431 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP)
432 return WPA_CIPHER_GCMP;
433 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP_256)
434 return WPA_CIPHER_CCMP_256;
435 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP_256)
436 return WPA_CIPHER_GCMP_256;
437 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_128)
438 return WPA_CIPHER_BIP_GMAC_128;
439 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_256)
440 return WPA_CIPHER_BIP_GMAC_256;
441 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_CMAC_256)
442 return WPA_CIPHER_BIP_CMAC_256;
443 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED)
444 return WPA_CIPHER_GTK_NOT_USED;
449 static int rsn_key_mgmt_to_bitfield(const u8 *s)
451 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_UNSPEC_802_1X)
452 return WPA_KEY_MGMT_IEEE8021X;
453 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X)
454 return WPA_KEY_MGMT_PSK;
455 #ifdef CONFIG_IEEE80211R
456 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_802_1X)
457 return WPA_KEY_MGMT_FT_IEEE8021X;
458 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_PSK)
459 return WPA_KEY_MGMT_FT_PSK;
460 #endif /* CONFIG_IEEE80211R */
461 #ifdef CONFIG_IEEE80211W
462 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SHA256)
463 return WPA_KEY_MGMT_IEEE8021X_SHA256;
464 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_SHA256)
465 return WPA_KEY_MGMT_PSK_SHA256;
466 #endif /* CONFIG_IEEE80211W */
468 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_SAE)
469 return WPA_KEY_MGMT_SAE;
470 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_SAE)
471 return WPA_KEY_MGMT_FT_SAE;
472 #endif /* CONFIG_SAE */
473 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B)
474 return WPA_KEY_MGMT_IEEE8021X_SUITE_B;
475 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192)
476 return WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
481 static int wpa_cipher_valid_group(int cipher)
483 return wpa_cipher_valid_pairwise(cipher) ||
484 cipher == WPA_CIPHER_WEP104 ||
485 cipher == WPA_CIPHER_WEP40 ||
486 cipher == WPA_CIPHER_GTK_NOT_USED;
490 #ifdef CONFIG_IEEE80211W
491 int wpa_cipher_valid_mgmt_group(int cipher)
493 return cipher == WPA_CIPHER_AES_128_CMAC ||
494 cipher == WPA_CIPHER_BIP_GMAC_128 ||
495 cipher == WPA_CIPHER_BIP_GMAC_256 ||
496 cipher == WPA_CIPHER_BIP_CMAC_256;
498 #endif /* CONFIG_IEEE80211W */
502 * wpa_parse_wpa_ie_rsn - Parse RSN IE
503 * @rsn_ie: Buffer containing RSN IE
504 * @rsn_ie_len: RSN IE buffer length (including IE number and length octets)
505 * @data: Pointer to structure that will be filled in with parsed data
506 * Returns: 0 on success, <0 on failure
508 int wpa_parse_wpa_ie_rsn(const u8 *rsn_ie, size_t rsn_ie_len,
509 struct wpa_ie_data *data)
511 const struct rsn_ie_hdr *hdr;
516 os_memset(data, 0, sizeof(*data));
517 data->proto = WPA_PROTO_RSN;
518 data->pairwise_cipher = WPA_CIPHER_CCMP;
519 data->group_cipher = WPA_CIPHER_CCMP;
520 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
521 data->capabilities = 0;
524 #ifdef CONFIG_IEEE80211W
525 data->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
526 #else /* CONFIG_IEEE80211W */
527 data->mgmt_group_cipher = 0;
528 #endif /* CONFIG_IEEE80211W */
530 if (rsn_ie_len == 0) {
531 /* No RSN IE - fail silently */
535 if (rsn_ie_len < sizeof(struct rsn_ie_hdr)) {
536 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
537 __func__, (unsigned long) rsn_ie_len);
541 hdr = (const struct rsn_ie_hdr *) rsn_ie;
543 if (hdr->elem_id != WLAN_EID_RSN ||
544 hdr->len != rsn_ie_len - 2 ||
545 WPA_GET_LE16(hdr->version) != RSN_VERSION) {
546 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
551 pos = (const u8 *) (hdr + 1);
552 left = rsn_ie_len - sizeof(*hdr);
554 if (left >= RSN_SELECTOR_LEN) {
555 data->group_cipher = rsn_selector_to_bitfield(pos);
556 if (!wpa_cipher_valid_group(data->group_cipher)) {
557 wpa_printf(MSG_DEBUG, "%s: invalid group cipher 0x%x",
558 __func__, data->group_cipher);
561 pos += RSN_SELECTOR_LEN;
562 left -= RSN_SELECTOR_LEN;
563 } else if (left > 0) {
564 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
570 data->pairwise_cipher = 0;
571 count = WPA_GET_LE16(pos);
574 if (count == 0 || count > left / RSN_SELECTOR_LEN) {
575 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
576 "count %u left %u", __func__, count, left);
579 for (i = 0; i < count; i++) {
580 data->pairwise_cipher |= rsn_selector_to_bitfield(pos);
581 pos += RSN_SELECTOR_LEN;
582 left -= RSN_SELECTOR_LEN;
584 #ifdef CONFIG_IEEE80211W
585 if (data->pairwise_cipher & WPA_CIPHER_AES_128_CMAC) {
586 wpa_printf(MSG_DEBUG, "%s: AES-128-CMAC used as "
587 "pairwise cipher", __func__);
590 #endif /* CONFIG_IEEE80211W */
591 } else if (left == 1) {
592 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
599 count = WPA_GET_LE16(pos);
602 if (count == 0 || count > left / RSN_SELECTOR_LEN) {
603 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
604 "count %u left %u", __func__, count, left);
607 for (i = 0; i < count; i++) {
608 data->key_mgmt |= rsn_key_mgmt_to_bitfield(pos);
609 pos += RSN_SELECTOR_LEN;
610 left -= RSN_SELECTOR_LEN;
612 } else if (left == 1) {
613 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
619 data->capabilities = WPA_GET_LE16(pos);
625 u16 num_pmkid = WPA_GET_LE16(pos);
628 if (num_pmkid > (unsigned int) left / PMKID_LEN) {
629 wpa_printf(MSG_DEBUG, "%s: PMKID underflow "
630 "(num_pmkid=%u left=%d)",
631 __func__, num_pmkid, left);
635 data->num_pmkid = num_pmkid;
637 pos += data->num_pmkid * PMKID_LEN;
638 left -= data->num_pmkid * PMKID_LEN;
642 #ifdef CONFIG_IEEE80211W
644 data->mgmt_group_cipher = rsn_selector_to_bitfield(pos);
645 if (!wpa_cipher_valid_mgmt_group(data->mgmt_group_cipher)) {
646 wpa_printf(MSG_DEBUG, "%s: Unsupported management "
647 "group cipher 0x%x", __func__,
648 data->mgmt_group_cipher);
651 pos += RSN_SELECTOR_LEN;
652 left -= RSN_SELECTOR_LEN;
654 #endif /* CONFIG_IEEE80211W */
657 wpa_hexdump(MSG_DEBUG,
658 "wpa_parse_wpa_ie_rsn: ignore trailing bytes",
666 static int wpa_selector_to_bitfield(const u8 *s)
668 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_NONE)
669 return WPA_CIPHER_NONE;
670 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_WEP40)
671 return WPA_CIPHER_WEP40;
672 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_TKIP)
673 return WPA_CIPHER_TKIP;
674 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_CCMP)
675 return WPA_CIPHER_CCMP;
676 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_WEP104)
677 return WPA_CIPHER_WEP104;
682 static int wpa_key_mgmt_to_bitfield(const u8 *s)
684 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_UNSPEC_802_1X)
685 return WPA_KEY_MGMT_IEEE8021X;
686 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X)
687 return WPA_KEY_MGMT_PSK;
688 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_NONE)
689 return WPA_KEY_MGMT_WPA_NONE;
694 int wpa_parse_wpa_ie_wpa(const u8 *wpa_ie, size_t wpa_ie_len,
695 struct wpa_ie_data *data)
697 const struct wpa_ie_hdr *hdr;
702 os_memset(data, 0, sizeof(*data));
703 data->proto = WPA_PROTO_WPA;
704 data->pairwise_cipher = WPA_CIPHER_TKIP;
705 data->group_cipher = WPA_CIPHER_TKIP;
706 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
707 data->capabilities = 0;
710 data->mgmt_group_cipher = 0;
712 if (wpa_ie_len == 0) {
713 /* No WPA IE - fail silently */
717 if (wpa_ie_len < sizeof(struct wpa_ie_hdr)) {
718 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
719 __func__, (unsigned long) wpa_ie_len);
723 hdr = (const struct wpa_ie_hdr *) wpa_ie;
725 if (hdr->elem_id != WLAN_EID_VENDOR_SPECIFIC ||
726 hdr->len != wpa_ie_len - 2 ||
727 RSN_SELECTOR_GET(hdr->oui) != WPA_OUI_TYPE ||
728 WPA_GET_LE16(hdr->version) != WPA_VERSION) {
729 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
734 pos = (const u8 *) (hdr + 1);
735 left = wpa_ie_len - sizeof(*hdr);
737 if (left >= WPA_SELECTOR_LEN) {
738 data->group_cipher = wpa_selector_to_bitfield(pos);
739 pos += WPA_SELECTOR_LEN;
740 left -= WPA_SELECTOR_LEN;
741 } else if (left > 0) {
742 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
748 data->pairwise_cipher = 0;
749 count = WPA_GET_LE16(pos);
752 if (count == 0 || count > left / WPA_SELECTOR_LEN) {
753 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
754 "count %u left %u", __func__, count, left);
757 for (i = 0; i < count; i++) {
758 data->pairwise_cipher |= wpa_selector_to_bitfield(pos);
759 pos += WPA_SELECTOR_LEN;
760 left -= WPA_SELECTOR_LEN;
762 } else if (left == 1) {
763 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
770 count = WPA_GET_LE16(pos);
773 if (count == 0 || count > left / WPA_SELECTOR_LEN) {
774 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
775 "count %u left %u", __func__, count, left);
778 for (i = 0; i < count; i++) {
779 data->key_mgmt |= wpa_key_mgmt_to_bitfield(pos);
780 pos += WPA_SELECTOR_LEN;
781 left -= WPA_SELECTOR_LEN;
783 } else if (left == 1) {
784 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
790 data->capabilities = WPA_GET_LE16(pos);
796 wpa_hexdump(MSG_DEBUG,
797 "wpa_parse_wpa_ie_wpa: ignore trailing bytes",
805 #ifdef CONFIG_IEEE80211R
808 * wpa_derive_pmk_r0 - Derive PMK-R0 and PMKR0Name
810 * IEEE Std 802.11r-2008 - 8.5.1.5.3
812 void wpa_derive_pmk_r0(const u8 *xxkey, size_t xxkey_len,
813 const u8 *ssid, size_t ssid_len,
814 const u8 *mdid, const u8 *r0kh_id, size_t r0kh_id_len,
815 const u8 *s0kh_id, u8 *pmk_r0, u8 *pmk_r0_name)
817 u8 buf[1 + WPA_MAX_SSID_LEN + MOBILITY_DOMAIN_ID_LEN + 1 +
818 FT_R0KH_ID_MAX_LEN + ETH_ALEN];
819 u8 *pos, r0_key_data[48], hash[32];
824 * R0-Key-Data = KDF-384(XXKey, "FT-R0",
825 * SSIDlength || SSID || MDID || R0KHlength ||
826 * R0KH-ID || S0KH-ID)
827 * XXKey is either the second 256 bits of MSK or PSK.
828 * PMK-R0 = L(R0-Key-Data, 0, 256)
829 * PMK-R0Name-Salt = L(R0-Key-Data, 256, 128)
831 if (ssid_len > WPA_MAX_SSID_LEN || r0kh_id_len > FT_R0KH_ID_MAX_LEN)
835 os_memcpy(pos, ssid, ssid_len);
837 os_memcpy(pos, mdid, MOBILITY_DOMAIN_ID_LEN);
838 pos += MOBILITY_DOMAIN_ID_LEN;
839 *pos++ = r0kh_id_len;
840 os_memcpy(pos, r0kh_id, r0kh_id_len);
842 os_memcpy(pos, s0kh_id, ETH_ALEN);
845 sha256_prf(xxkey, xxkey_len, "FT-R0", buf, pos - buf,
846 r0_key_data, sizeof(r0_key_data));
847 os_memcpy(pmk_r0, r0_key_data, PMK_LEN);
850 * PMKR0Name = Truncate-128(SHA-256("FT-R0N" || PMK-R0Name-Salt)
852 addr[0] = (const u8 *) "FT-R0N";
854 addr[1] = r0_key_data + PMK_LEN;
857 sha256_vector(2, addr, len, hash);
858 os_memcpy(pmk_r0_name, hash, WPA_PMK_NAME_LEN);
863 * wpa_derive_pmk_r1_name - Derive PMKR1Name
865 * IEEE Std 802.11r-2008 - 8.5.1.5.4
867 void wpa_derive_pmk_r1_name(const u8 *pmk_r0_name, const u8 *r1kh_id,
868 const u8 *s1kh_id, u8 *pmk_r1_name)
875 * PMKR1Name = Truncate-128(SHA-256("FT-R1N" || PMKR0Name ||
876 * R1KH-ID || S1KH-ID))
878 addr[0] = (const u8 *) "FT-R1N";
880 addr[1] = pmk_r0_name;
881 len[1] = WPA_PMK_NAME_LEN;
883 len[2] = FT_R1KH_ID_LEN;
887 sha256_vector(4, addr, len, hash);
888 os_memcpy(pmk_r1_name, hash, WPA_PMK_NAME_LEN);
893 * wpa_derive_pmk_r1 - Derive PMK-R1 and PMKR1Name from PMK-R0
895 * IEEE Std 802.11r-2008 - 8.5.1.5.4
897 void wpa_derive_pmk_r1(const u8 *pmk_r0, const u8 *pmk_r0_name,
898 const u8 *r1kh_id, const u8 *s1kh_id,
899 u8 *pmk_r1, u8 *pmk_r1_name)
901 u8 buf[FT_R1KH_ID_LEN + ETH_ALEN];
904 /* PMK-R1 = KDF-256(PMK-R0, "FT-R1", R1KH-ID || S1KH-ID) */
906 os_memcpy(pos, r1kh_id, FT_R1KH_ID_LEN);
907 pos += FT_R1KH_ID_LEN;
908 os_memcpy(pos, s1kh_id, ETH_ALEN);
911 sha256_prf(pmk_r0, PMK_LEN, "FT-R1", buf, pos - buf, pmk_r1, PMK_LEN);
913 wpa_derive_pmk_r1_name(pmk_r0_name, r1kh_id, s1kh_id, pmk_r1_name);
918 * wpa_pmk_r1_to_ptk - Derive PTK and PTKName from PMK-R1
920 * IEEE Std 802.11r-2008 - 8.5.1.5.5
922 int wpa_pmk_r1_to_ptk(const u8 *pmk_r1, const u8 *snonce, const u8 *anonce,
923 const u8 *sta_addr, const u8 *bssid,
924 const u8 *pmk_r1_name,
925 struct wpa_ptk *ptk, u8 *ptk_name, int akmp, int cipher)
927 u8 buf[2 * WPA_NONCE_LEN + 2 * ETH_ALEN];
931 u8 tmp[WPA_KCK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN];
935 * PTK = KDF-PTKLen(PMK-R1, "FT-PTK", SNonce || ANonce ||
939 os_memcpy(pos, snonce, WPA_NONCE_LEN);
940 pos += WPA_NONCE_LEN;
941 os_memcpy(pos, anonce, WPA_NONCE_LEN);
942 pos += WPA_NONCE_LEN;
943 os_memcpy(pos, bssid, ETH_ALEN);
945 os_memcpy(pos, sta_addr, ETH_ALEN);
948 ptk->kck_len = wpa_kck_len(akmp);
949 ptk->kek_len = wpa_kek_len(akmp);
950 ptk->tk_len = wpa_cipher_key_len(cipher);
951 ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len;
953 sha256_prf(pmk_r1, PMK_LEN, "FT-PTK", buf, pos - buf, tmp, ptk_len);
956 * PTKName = Truncate-128(SHA-256(PMKR1Name || "FT-PTKN" || SNonce ||
957 * ANonce || BSSID || STA-ADDR))
959 addr[0] = pmk_r1_name;
960 len[0] = WPA_PMK_NAME_LEN;
961 addr[1] = (const u8 *) "FT-PTKN";
964 len[2] = WPA_NONCE_LEN;
966 len[3] = WPA_NONCE_LEN;
972 sha256_vector(6, addr, len, hash);
973 os_memcpy(ptk_name, hash, WPA_PMK_NAME_LEN);
975 os_memcpy(ptk->kck, tmp, ptk->kck_len);
976 os_memcpy(ptk->kek, tmp + ptk->kck_len, ptk->kek_len);
977 os_memcpy(ptk->tk, tmp + ptk->kck_len + ptk->kek_len, ptk->tk_len);
979 wpa_hexdump_key(MSG_DEBUG, "FT: KCK", ptk->kck, ptk->kck_len);
980 wpa_hexdump_key(MSG_DEBUG, "FT: KEK", ptk->kek, ptk->kek_len);
981 wpa_hexdump_key(MSG_DEBUG, "FT: TK", ptk->tk, ptk->tk_len);
982 wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN);
984 os_memset(tmp, 0, sizeof(tmp));
989 #endif /* CONFIG_IEEE80211R */
993 * rsn_pmkid - Calculate PMK identifier
994 * @pmk: Pairwise master key
995 * @pmk_len: Length of pmk in bytes
996 * @aa: Authenticator address
997 * @spa: Supplicant address
998 * @pmkid: Buffer for PMKID
999 * @use_sha256: Whether to use SHA256-based KDF
1001 * IEEE Std 802.11i-2004 - 8.5.1.2 Pairwise key hierarchy
1002 * PMKID = HMAC-SHA1-128(PMK, "PMK Name" || AA || SPA)
1004 void rsn_pmkid(const u8 *pmk, size_t pmk_len, const u8 *aa, const u8 *spa,
1005 u8 *pmkid, int use_sha256)
1007 char *title = "PMK Name";
1009 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1010 unsigned char hash[SHA256_MAC_LEN];
1012 addr[0] = (u8 *) title;
1016 #ifdef CONFIG_IEEE80211W
1018 hmac_sha256_vector(pmk, pmk_len, 3, addr, len, hash);
1020 #endif /* CONFIG_IEEE80211W */
1021 hmac_sha1_vector(pmk, pmk_len, 3, addr, len, hash);
1022 os_memcpy(pmkid, hash, PMKID_LEN);
1026 #ifdef CONFIG_SUITEB
1028 * rsn_pmkid_suite_b - Calculate PMK identifier for Suite B AKM
1029 * @kck: Key confirmation key
1030 * @kck_len: Length of kck in bytes
1031 * @aa: Authenticator address
1032 * @spa: Supplicant address
1033 * @pmkid: Buffer for PMKID
1034 * Returns: 0 on success, -1 on failure
1036 * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
1037 * PMKID = Truncate(HMAC-SHA-256(KCK, "PMK Name" || AA || SPA))
1039 int rsn_pmkid_suite_b(const u8 *kck, size_t kck_len, const u8 *aa,
1040 const u8 *spa, u8 *pmkid)
1042 char *title = "PMK Name";
1044 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1045 unsigned char hash[SHA256_MAC_LEN];
1047 addr[0] = (u8 *) title;
1051 if (hmac_sha256_vector(kck, kck_len, 3, addr, len, hash) < 0)
1053 os_memcpy(pmkid, hash, PMKID_LEN);
1056 #endif /* CONFIG_SUITEB */
1059 #ifdef CONFIG_SUITEB192
1061 * rsn_pmkid_suite_b_192 - Calculate PMK identifier for Suite B AKM
1062 * @kck: Key confirmation key
1063 * @kck_len: Length of kck in bytes
1064 * @aa: Authenticator address
1065 * @spa: Supplicant address
1066 * @pmkid: Buffer for PMKID
1067 * Returns: 0 on success, -1 on failure
1069 * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
1070 * PMKID = Truncate(HMAC-SHA-384(KCK, "PMK Name" || AA || SPA))
1072 int rsn_pmkid_suite_b_192(const u8 *kck, size_t kck_len, const u8 *aa,
1073 const u8 *spa, u8 *pmkid)
1075 char *title = "PMK Name";
1077 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1078 unsigned char hash[SHA384_MAC_LEN];
1080 addr[0] = (u8 *) title;
1084 if (hmac_sha384_vector(kck, kck_len, 3, addr, len, hash) < 0)
1086 os_memcpy(pmkid, hash, PMKID_LEN);
1089 #endif /* CONFIG_SUITEB192 */
1093 * wpa_cipher_txt - Convert cipher suite to a text string
1094 * @cipher: Cipher suite (WPA_CIPHER_* enum)
1095 * Returns: Pointer to a text string of the cipher suite name
1097 const char * wpa_cipher_txt(int cipher)
1100 case WPA_CIPHER_NONE:
1102 case WPA_CIPHER_WEP40:
1104 case WPA_CIPHER_WEP104:
1106 case WPA_CIPHER_TKIP:
1108 case WPA_CIPHER_CCMP:
1110 case WPA_CIPHER_CCMP | WPA_CIPHER_TKIP:
1112 case WPA_CIPHER_GCMP:
1114 case WPA_CIPHER_GCMP_256:
1116 case WPA_CIPHER_CCMP_256:
1118 case WPA_CIPHER_GTK_NOT_USED:
1119 return "GTK_NOT_USED";
1127 * wpa_key_mgmt_txt - Convert key management suite to a text string
1128 * @key_mgmt: Key management suite (WPA_KEY_MGMT_* enum)
1129 * @proto: WPA/WPA2 version (WPA_PROTO_*)
1130 * Returns: Pointer to a text string of the key management suite name
1132 const char * wpa_key_mgmt_txt(int key_mgmt, int proto)
1135 case WPA_KEY_MGMT_IEEE8021X:
1136 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
1137 return "WPA2+WPA/IEEE 802.1X/EAP";
1138 return proto == WPA_PROTO_RSN ?
1139 "WPA2/IEEE 802.1X/EAP" : "WPA/IEEE 802.1X/EAP";
1140 case WPA_KEY_MGMT_PSK:
1141 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
1142 return "WPA2-PSK+WPA-PSK";
1143 return proto == WPA_PROTO_RSN ?
1144 "WPA2-PSK" : "WPA-PSK";
1145 case WPA_KEY_MGMT_NONE:
1147 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
1148 return "IEEE 802.1X (no WPA)";
1149 #ifdef CONFIG_IEEE80211R
1150 case WPA_KEY_MGMT_FT_IEEE8021X:
1152 case WPA_KEY_MGMT_FT_PSK:
1154 #endif /* CONFIG_IEEE80211R */
1155 #ifdef CONFIG_IEEE80211W
1156 case WPA_KEY_MGMT_IEEE8021X_SHA256:
1157 return "WPA2-EAP-SHA256";
1158 case WPA_KEY_MGMT_PSK_SHA256:
1159 return "WPA2-PSK-SHA256";
1160 #endif /* CONFIG_IEEE80211W */
1161 case WPA_KEY_MGMT_WPS:
1163 case WPA_KEY_MGMT_SAE:
1165 case WPA_KEY_MGMT_FT_SAE:
1167 case WPA_KEY_MGMT_OSEN:
1169 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
1170 return "WPA2-EAP-SUITE-B";
1171 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
1172 return "WPA2-EAP-SUITE-B-192";
1179 u32 wpa_akm_to_suite(int akm)
1181 if (akm & WPA_KEY_MGMT_FT_IEEE8021X)
1182 return WLAN_AKM_SUITE_FT_8021X;
1183 if (akm & WPA_KEY_MGMT_FT_PSK)
1184 return WLAN_AKM_SUITE_FT_PSK;
1185 if (akm & WPA_KEY_MGMT_IEEE8021X)
1186 return WLAN_AKM_SUITE_8021X;
1187 if (akm & WPA_KEY_MGMT_IEEE8021X_SHA256)
1188 return WLAN_AKM_SUITE_8021X_SHA256;
1189 if (akm & WPA_KEY_MGMT_IEEE8021X)
1190 return WLAN_AKM_SUITE_8021X;
1191 if (akm & WPA_KEY_MGMT_PSK_SHA256)
1192 return WLAN_AKM_SUITE_PSK_SHA256;
1193 if (akm & WPA_KEY_MGMT_PSK)
1194 return WLAN_AKM_SUITE_PSK;
1195 if (akm & WPA_KEY_MGMT_CCKM)
1196 return WLAN_AKM_SUITE_CCKM;
1197 if (akm & WPA_KEY_MGMT_OSEN)
1198 return WLAN_AKM_SUITE_OSEN;
1199 if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B)
1200 return WLAN_AKM_SUITE_8021X_SUITE_B;
1201 if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
1202 return WLAN_AKM_SUITE_8021X_SUITE_B_192;
1207 int wpa_compare_rsn_ie(int ft_initial_assoc,
1208 const u8 *ie1, size_t ie1len,
1209 const u8 *ie2, size_t ie2len)
1211 if (ie1 == NULL || ie2 == NULL)
1214 if (ie1len == ie2len && os_memcmp(ie1, ie2, ie1len) == 0)
1215 return 0; /* identical IEs */
1217 #ifdef CONFIG_IEEE80211R
1218 if (ft_initial_assoc) {
1219 struct wpa_ie_data ie1d, ie2d;
1221 * The PMKID-List in RSN IE is different between Beacon/Probe
1222 * Response/(Re)Association Request frames and EAPOL-Key
1223 * messages in FT initial mobility domain association. Allow
1224 * for this, but verify that other parts of the RSN IEs are
1227 if (wpa_parse_wpa_ie_rsn(ie1, ie1len, &ie1d) < 0 ||
1228 wpa_parse_wpa_ie_rsn(ie2, ie2len, &ie2d) < 0)
1230 if (ie1d.proto == ie2d.proto &&
1231 ie1d.pairwise_cipher == ie2d.pairwise_cipher &&
1232 ie1d.group_cipher == ie2d.group_cipher &&
1233 ie1d.key_mgmt == ie2d.key_mgmt &&
1234 ie1d.capabilities == ie2d.capabilities &&
1235 ie1d.mgmt_group_cipher == ie2d.mgmt_group_cipher)
1238 #endif /* CONFIG_IEEE80211R */
1244 #ifdef CONFIG_IEEE80211R
1245 int wpa_insert_pmkid(u8 *ies, size_t ies_len, const u8 *pmkid)
1247 u8 *start, *end, *rpos, *rend;
1251 end = ies + ies_len;
1253 while (start < end) {
1254 if (*start == WLAN_EID_RSN)
1256 start += 2 + start[1];
1259 wpa_printf(MSG_ERROR, "FT: Could not find RSN IE in "
1263 wpa_hexdump(MSG_DEBUG, "FT: RSN IE before modification",
1264 start, 2 + start[1]);
1266 /* Find start of PMKID-Count */
1268 rend = rpos + start[1];
1270 /* Skip Version and Group Data Cipher Suite */
1272 /* Skip Pairwise Cipher Suite Count and List */
1273 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
1274 /* Skip AKM Suite Count and List */
1275 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
1278 /* Add RSN Capabilities */
1279 os_memmove(rpos + 2, rpos, end - rpos);
1283 /* Skip RSN Capabilities */
1286 wpa_printf(MSG_ERROR, "FT: Could not parse RSN IE in "
1293 /* No PMKID-Count field included; add it */
1294 os_memmove(rpos + 2 + PMKID_LEN, rpos, end - rpos);
1295 WPA_PUT_LE16(rpos, 1);
1297 os_memcpy(rpos, pmkid, PMKID_LEN);
1298 added += 2 + PMKID_LEN;
1299 start[1] += 2 + PMKID_LEN;
1301 /* PMKID-Count was included; use it */
1302 if (WPA_GET_LE16(rpos) != 0) {
1303 wpa_printf(MSG_ERROR, "FT: Unexpected PMKID "
1304 "in RSN IE in EAPOL-Key data");
1307 WPA_PUT_LE16(rpos, 1);
1309 os_memmove(rpos + PMKID_LEN, rpos, end - rpos);
1310 os_memcpy(rpos, pmkid, PMKID_LEN);
1312 start[1] += PMKID_LEN;
1315 wpa_hexdump(MSG_DEBUG, "FT: RSN IE after modification "
1316 "(PMKID inserted)", start, 2 + start[1]);
1320 #endif /* CONFIG_IEEE80211R */
1323 int wpa_cipher_key_len(int cipher)
1326 case WPA_CIPHER_CCMP_256:
1327 case WPA_CIPHER_GCMP_256:
1328 case WPA_CIPHER_BIP_GMAC_256:
1329 case WPA_CIPHER_BIP_CMAC_256:
1331 case WPA_CIPHER_CCMP:
1332 case WPA_CIPHER_GCMP:
1333 case WPA_CIPHER_AES_128_CMAC:
1334 case WPA_CIPHER_BIP_GMAC_128:
1336 case WPA_CIPHER_TKIP:
1338 case WPA_CIPHER_WEP104:
1340 case WPA_CIPHER_WEP40:
1348 int wpa_cipher_rsc_len(int cipher)
1351 case WPA_CIPHER_CCMP_256:
1352 case WPA_CIPHER_GCMP_256:
1353 case WPA_CIPHER_CCMP:
1354 case WPA_CIPHER_GCMP:
1355 case WPA_CIPHER_TKIP:
1357 case WPA_CIPHER_WEP104:
1358 case WPA_CIPHER_WEP40:
1366 int wpa_cipher_to_alg(int cipher)
1369 case WPA_CIPHER_CCMP_256:
1370 return WPA_ALG_CCMP_256;
1371 case WPA_CIPHER_GCMP_256:
1372 return WPA_ALG_GCMP_256;
1373 case WPA_CIPHER_CCMP:
1374 return WPA_ALG_CCMP;
1375 case WPA_CIPHER_GCMP:
1376 return WPA_ALG_GCMP;
1377 case WPA_CIPHER_TKIP:
1378 return WPA_ALG_TKIP;
1379 case WPA_CIPHER_WEP104:
1380 case WPA_CIPHER_WEP40:
1382 case WPA_CIPHER_AES_128_CMAC:
1383 return WPA_ALG_IGTK;
1384 case WPA_CIPHER_BIP_GMAC_128:
1385 return WPA_ALG_BIP_GMAC_128;
1386 case WPA_CIPHER_BIP_GMAC_256:
1387 return WPA_ALG_BIP_GMAC_256;
1388 case WPA_CIPHER_BIP_CMAC_256:
1389 return WPA_ALG_BIP_CMAC_256;
1391 return WPA_ALG_NONE;
1395 int wpa_cipher_valid_pairwise(int cipher)
1397 return cipher == WPA_CIPHER_CCMP_256 ||
1398 cipher == WPA_CIPHER_GCMP_256 ||
1399 cipher == WPA_CIPHER_CCMP ||
1400 cipher == WPA_CIPHER_GCMP ||
1401 cipher == WPA_CIPHER_TKIP;
1405 u32 wpa_cipher_to_suite(int proto, int cipher)
1407 if (cipher & WPA_CIPHER_CCMP_256)
1408 return RSN_CIPHER_SUITE_CCMP_256;
1409 if (cipher & WPA_CIPHER_GCMP_256)
1410 return RSN_CIPHER_SUITE_GCMP_256;
1411 if (cipher & WPA_CIPHER_CCMP)
1412 return (proto == WPA_PROTO_RSN ?
1413 RSN_CIPHER_SUITE_CCMP : WPA_CIPHER_SUITE_CCMP);
1414 if (cipher & WPA_CIPHER_GCMP)
1415 return RSN_CIPHER_SUITE_GCMP;
1416 if (cipher & WPA_CIPHER_TKIP)
1417 return (proto == WPA_PROTO_RSN ?
1418 RSN_CIPHER_SUITE_TKIP : WPA_CIPHER_SUITE_TKIP);
1419 if (cipher & WPA_CIPHER_WEP104)
1420 return (proto == WPA_PROTO_RSN ?
1421 RSN_CIPHER_SUITE_WEP104 : WPA_CIPHER_SUITE_WEP104);
1422 if (cipher & WPA_CIPHER_WEP40)
1423 return (proto == WPA_PROTO_RSN ?
1424 RSN_CIPHER_SUITE_WEP40 : WPA_CIPHER_SUITE_WEP40);
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;
1528 if (ciphers & WPA_CIPHER_WEP104)
1529 return WPA_CIPHER_WEP104;
1530 if (ciphers & WPA_CIPHER_WEP40)
1531 return WPA_CIPHER_WEP40;
1536 int wpa_parse_cipher(const char *value)
1539 char *start, *end, *buf;
1541 buf = os_strdup(value);
1546 while (*start != '\0') {
1547 while (*start == ' ' || *start == '\t')
1552 while (*end != ' ' && *end != '\t' && *end != '\0')
1554 last = *end == '\0';
1556 if (os_strcmp(start, "CCMP-256") == 0)
1557 val |= WPA_CIPHER_CCMP_256;
1558 else if (os_strcmp(start, "GCMP-256") == 0)
1559 val |= WPA_CIPHER_GCMP_256;
1560 else if (os_strcmp(start, "CCMP") == 0)
1561 val |= WPA_CIPHER_CCMP;
1562 else if (os_strcmp(start, "GCMP") == 0)
1563 val |= WPA_CIPHER_GCMP;
1564 else if (os_strcmp(start, "TKIP") == 0)
1565 val |= WPA_CIPHER_TKIP;
1566 else if (os_strcmp(start, "WEP104") == 0)
1567 val |= WPA_CIPHER_WEP104;
1568 else if (os_strcmp(start, "WEP40") == 0)
1569 val |= WPA_CIPHER_WEP40;
1570 else if (os_strcmp(start, "NONE") == 0)
1571 val |= WPA_CIPHER_NONE;
1572 else if (os_strcmp(start, "GTK_NOT_USED") == 0)
1573 val |= WPA_CIPHER_GTK_NOT_USED;
1589 int wpa_write_ciphers(char *start, char *end, int ciphers, const char *delim)
1594 if (ciphers & WPA_CIPHER_CCMP_256) {
1595 ret = os_snprintf(pos, end - pos, "%sCCMP-256",
1596 pos == start ? "" : delim);
1597 if (os_snprintf_error(end - pos, ret))
1601 if (ciphers & WPA_CIPHER_GCMP_256) {
1602 ret = os_snprintf(pos, end - pos, "%sGCMP-256",
1603 pos == start ? "" : delim);
1604 if (os_snprintf_error(end - pos, ret))
1608 if (ciphers & WPA_CIPHER_CCMP) {
1609 ret = os_snprintf(pos, end - pos, "%sCCMP",
1610 pos == start ? "" : delim);
1611 if (os_snprintf_error(end - pos, ret))
1615 if (ciphers & WPA_CIPHER_GCMP) {
1616 ret = os_snprintf(pos, end - pos, "%sGCMP",
1617 pos == start ? "" : delim);
1618 if (os_snprintf_error(end - pos, ret))
1622 if (ciphers & WPA_CIPHER_TKIP) {
1623 ret = os_snprintf(pos, end - pos, "%sTKIP",
1624 pos == start ? "" : delim);
1625 if (os_snprintf_error(end - pos, ret))
1629 if (ciphers & WPA_CIPHER_WEP104) {
1630 ret = os_snprintf(pos, end - pos, "%sWEP104",
1631 pos == start ? "" : delim);
1632 if (os_snprintf_error(end - pos, ret))
1636 if (ciphers & WPA_CIPHER_WEP40) {
1637 ret = os_snprintf(pos, end - pos, "%sWEP40",
1638 pos == start ? "" : delim);
1639 if (os_snprintf_error(end - pos, ret))
1643 if (ciphers & WPA_CIPHER_NONE) {
1644 ret = os_snprintf(pos, end - pos, "%sNONE",
1645 pos == start ? "" : delim);
1646 if (os_snprintf_error(end - pos, ret))
1655 int wpa_select_ap_group_cipher(int wpa, int wpa_pairwise, int rsn_pairwise)
1659 /* Select group cipher based on the enabled pairwise cipher suites */
1661 pairwise |= wpa_pairwise;
1663 pairwise |= rsn_pairwise;
1665 if (pairwise & WPA_CIPHER_TKIP)
1666 return WPA_CIPHER_TKIP;
1667 if ((pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP)
1668 return WPA_CIPHER_GCMP;
1669 if ((pairwise & (WPA_CIPHER_GCMP_256 | WPA_CIPHER_CCMP |
1670 WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP_256)
1671 return WPA_CIPHER_GCMP_256;
1672 if ((pairwise & (WPA_CIPHER_CCMP_256 | WPA_CIPHER_CCMP |
1673 WPA_CIPHER_GCMP)) == WPA_CIPHER_CCMP_256)
1674 return WPA_CIPHER_CCMP_256;
1675 return WPA_CIPHER_CCMP;