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_SUITEB192
174 if (wpa_key_mgmt_sha384(akmp))
175 sha384_prf(pmk, pmk_len, label, data, sizeof(data),
178 #endif /* CONFIG_SUITEB192 */
179 #ifdef CONFIG_IEEE80211W
180 if (wpa_key_mgmt_sha256(akmp))
181 sha256_prf(pmk, pmk_len, label, data, sizeof(data),
184 #endif /* CONFIG_IEEE80211W */
185 sha1_prf(pmk, pmk_len, label, data, sizeof(data), tmp, ptk_len);
187 wpa_printf(MSG_DEBUG, "WPA: PTK derivation - A1=" MACSTR " A2=" MACSTR,
188 MAC2STR(addr1), MAC2STR(addr2));
189 wpa_hexdump(MSG_DEBUG, "WPA: Nonce1", nonce1, WPA_NONCE_LEN);
190 wpa_hexdump(MSG_DEBUG, "WPA: Nonce2", nonce2, WPA_NONCE_LEN);
191 wpa_hexdump_key(MSG_DEBUG, "WPA: PMK", pmk, pmk_len);
192 wpa_hexdump_key(MSG_DEBUG, "WPA: PTK", tmp, ptk_len);
194 os_memcpy(ptk->kck, tmp, ptk->kck_len);
195 wpa_hexdump_key(MSG_DEBUG, "WPA: KCK", ptk->kck, ptk->kck_len);
197 os_memcpy(ptk->kek, tmp + ptk->kck_len, ptk->kek_len);
198 wpa_hexdump_key(MSG_DEBUG, "WPA: KEK", ptk->kek, ptk->kek_len);
200 os_memcpy(ptk->tk, tmp + ptk->kck_len + ptk->kek_len, ptk->tk_len);
201 wpa_hexdump_key(MSG_DEBUG, "WPA: TK", ptk->tk, ptk->tk_len);
203 os_memset(tmp, 0, sizeof(tmp));
208 #ifdef CONFIG_IEEE80211R
209 int wpa_ft_mic(const u8 *kck, size_t kck_len, const u8 *sta_addr,
210 const u8 *ap_addr, u8 transaction_seqnum,
211 const u8 *mdie, size_t mdie_len,
212 const u8 *ftie, size_t ftie_len,
213 const u8 *rsnie, size_t rsnie_len,
214 const u8 *ric, size_t ric_len, u8 *mic)
218 size_t i, num_elem = 0;
222 wpa_printf(MSG_WARNING, "FT: Unsupported KCK length %u",
223 (unsigned int) kck_len);
227 addr[num_elem] = sta_addr;
228 len[num_elem] = ETH_ALEN;
231 addr[num_elem] = ap_addr;
232 len[num_elem] = ETH_ALEN;
235 addr[num_elem] = &transaction_seqnum;
240 addr[num_elem] = rsnie;
241 len[num_elem] = rsnie_len;
245 addr[num_elem] = mdie;
246 len[num_elem] = mdie_len;
250 if (ftie_len < 2 + sizeof(struct rsn_ftie))
253 /* IE hdr and mic_control */
254 addr[num_elem] = ftie;
255 len[num_elem] = 2 + 2;
258 /* MIC field with all zeros */
259 os_memset(zero_mic, 0, sizeof(zero_mic));
260 addr[num_elem] = zero_mic;
261 len[num_elem] = sizeof(zero_mic);
265 addr[num_elem] = ftie + 2 + 2 + 16;
266 len[num_elem] = ftie_len - (2 + 2 + 16);
270 addr[num_elem] = ric;
271 len[num_elem] = ric_len;
275 for (i = 0; i < num_elem; i++)
276 wpa_hexdump(MSG_MSGDUMP, "FT: MIC data", addr[i], len[i]);
277 if (omac1_aes_128_vector(kck, num_elem, addr, len, mic))
284 static int wpa_ft_parse_ftie(const u8 *ie, size_t ie_len,
285 struct wpa_ft_ies *parse)
290 parse->ftie_len = ie_len;
292 pos = ie + sizeof(struct rsn_ftie);
295 while (end - pos >= 2) {
304 case FTIE_SUBELEM_R1KH_ID:
305 if (len != FT_R1KH_ID_LEN) {
306 wpa_printf(MSG_DEBUG,
307 "FT: Invalid R1KH-ID length in FTIE: %d",
311 parse->r1kh_id = pos;
313 case FTIE_SUBELEM_GTK:
315 parse->gtk_len = len;
317 case FTIE_SUBELEM_R0KH_ID:
318 if (len < 1 || len > FT_R0KH_ID_MAX_LEN) {
319 wpa_printf(MSG_DEBUG,
320 "FT: Invalid R0KH-ID length in FTIE: %d",
324 parse->r0kh_id = pos;
325 parse->r0kh_id_len = len;
327 #ifdef CONFIG_IEEE80211W
328 case FTIE_SUBELEM_IGTK:
330 parse->igtk_len = len;
332 #endif /* CONFIG_IEEE80211W */
342 int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
343 struct wpa_ft_ies *parse)
346 struct wpa_ie_data data;
348 const struct rsn_ftie *ftie;
349 int prot_ie_count = 0;
351 os_memset(parse, 0, sizeof(*parse));
357 while (end - pos >= 2) {
368 parse->rsn_len = len;
369 ret = wpa_parse_wpa_ie_rsn(parse->rsn - 2,
373 wpa_printf(MSG_DEBUG, "FT: Failed to parse "
377 if (data.num_pmkid == 1 && data.pmkid)
378 parse->rsn_pmkid = data.pmkid;
380 case WLAN_EID_MOBILITY_DOMAIN:
381 if (len < sizeof(struct rsn_mdie))
384 parse->mdie_len = len;
386 case WLAN_EID_FAST_BSS_TRANSITION:
387 if (len < sizeof(*ftie))
389 ftie = (const struct rsn_ftie *) pos;
390 prot_ie_count = ftie->mic_control[1];
391 if (wpa_ft_parse_ftie(pos, len, parse) < 0)
394 case WLAN_EID_TIMEOUT_INTERVAL:
398 parse->tie_len = len;
400 case WLAN_EID_RIC_DATA:
401 if (parse->ric == NULL)
402 parse->ric = pos - 2;
409 if (prot_ie_count == 0)
410 return 0; /* no MIC */
413 * Check that the protected IE count matches with IEs included in the
422 if (prot_ie_count < 0) {
423 wpa_printf(MSG_DEBUG, "FT: Some required IEs not included in "
424 "the protected IE count");
428 if (prot_ie_count == 0 && parse->ric) {
429 wpa_printf(MSG_DEBUG, "FT: RIC IE(s) in the frame, but not "
430 "included in protected IE count");
434 /* Determine the end of the RIC IE(s) */
437 while (end - pos >= 2 && 2 + pos[1] <= end - pos &&
442 parse->ric_len = pos - parse->ric;
445 wpa_printf(MSG_DEBUG, "FT: %d protected IEs missing from "
446 "frame", (int) prot_ie_count);
452 #endif /* CONFIG_IEEE80211R */
455 static int rsn_selector_to_bitfield(const u8 *s)
457 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NONE)
458 return WPA_CIPHER_NONE;
459 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_TKIP)
460 return WPA_CIPHER_TKIP;
461 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP)
462 return WPA_CIPHER_CCMP;
463 #ifdef CONFIG_IEEE80211W
464 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_AES_128_CMAC)
465 return WPA_CIPHER_AES_128_CMAC;
466 #endif /* CONFIG_IEEE80211W */
467 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP)
468 return WPA_CIPHER_GCMP;
469 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP_256)
470 return WPA_CIPHER_CCMP_256;
471 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP_256)
472 return WPA_CIPHER_GCMP_256;
473 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_128)
474 return WPA_CIPHER_BIP_GMAC_128;
475 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_256)
476 return WPA_CIPHER_BIP_GMAC_256;
477 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_CMAC_256)
478 return WPA_CIPHER_BIP_CMAC_256;
479 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED)
480 return WPA_CIPHER_GTK_NOT_USED;
485 static int rsn_key_mgmt_to_bitfield(const u8 *s)
487 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_UNSPEC_802_1X)
488 return WPA_KEY_MGMT_IEEE8021X;
489 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X)
490 return WPA_KEY_MGMT_PSK;
491 #ifdef CONFIG_IEEE80211R
492 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_802_1X)
493 return WPA_KEY_MGMT_FT_IEEE8021X;
494 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_PSK)
495 return WPA_KEY_MGMT_FT_PSK;
496 #endif /* CONFIG_IEEE80211R */
497 #ifdef CONFIG_IEEE80211W
498 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SHA256)
499 return WPA_KEY_MGMT_IEEE8021X_SHA256;
500 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_SHA256)
501 return WPA_KEY_MGMT_PSK_SHA256;
502 #endif /* CONFIG_IEEE80211W */
504 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_SAE)
505 return WPA_KEY_MGMT_SAE;
506 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_SAE)
507 return WPA_KEY_MGMT_FT_SAE;
508 #endif /* CONFIG_SAE */
509 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B)
510 return WPA_KEY_MGMT_IEEE8021X_SUITE_B;
511 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192)
512 return WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
513 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_OSEN)
514 return WPA_KEY_MGMT_OSEN;
519 int wpa_cipher_valid_group(int cipher)
521 return wpa_cipher_valid_pairwise(cipher) ||
522 cipher == WPA_CIPHER_GTK_NOT_USED;
526 #ifdef CONFIG_IEEE80211W
527 int wpa_cipher_valid_mgmt_group(int cipher)
529 return cipher == WPA_CIPHER_AES_128_CMAC ||
530 cipher == WPA_CIPHER_BIP_GMAC_128 ||
531 cipher == WPA_CIPHER_BIP_GMAC_256 ||
532 cipher == WPA_CIPHER_BIP_CMAC_256;
534 #endif /* CONFIG_IEEE80211W */
538 * wpa_parse_wpa_ie_rsn - Parse RSN IE
539 * @rsn_ie: Buffer containing RSN IE
540 * @rsn_ie_len: RSN IE buffer length (including IE number and length octets)
541 * @data: Pointer to structure that will be filled in with parsed data
542 * Returns: 0 on success, <0 on failure
544 int wpa_parse_wpa_ie_rsn(const u8 *rsn_ie, size_t rsn_ie_len,
545 struct wpa_ie_data *data)
551 os_memset(data, 0, sizeof(*data));
552 data->proto = WPA_PROTO_RSN;
553 data->pairwise_cipher = WPA_CIPHER_CCMP;
554 data->group_cipher = WPA_CIPHER_CCMP;
555 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
556 data->capabilities = 0;
559 #ifdef CONFIG_IEEE80211W
560 data->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
561 #else /* CONFIG_IEEE80211W */
562 data->mgmt_group_cipher = 0;
563 #endif /* CONFIG_IEEE80211W */
565 if (rsn_ie_len == 0) {
566 /* No RSN IE - fail silently */
570 if (rsn_ie_len < sizeof(struct rsn_ie_hdr)) {
571 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
572 __func__, (unsigned long) rsn_ie_len);
576 if (rsn_ie_len >= 6 && rsn_ie[1] >= 4 &&
577 rsn_ie[1] == rsn_ie_len - 2 &&
578 WPA_GET_BE32(&rsn_ie[2]) == OSEN_IE_VENDOR_TYPE) {
580 left = rsn_ie_len - 6;
582 data->proto = WPA_PROTO_OSEN;
584 const struct rsn_ie_hdr *hdr;
586 hdr = (const struct rsn_ie_hdr *) rsn_ie;
588 if (hdr->elem_id != WLAN_EID_RSN ||
589 hdr->len != rsn_ie_len - 2 ||
590 WPA_GET_LE16(hdr->version) != RSN_VERSION) {
591 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
596 pos = (const u8 *) (hdr + 1);
597 left = rsn_ie_len - sizeof(*hdr);
600 if (left >= RSN_SELECTOR_LEN) {
601 data->group_cipher = rsn_selector_to_bitfield(pos);
602 if (!wpa_cipher_valid_group(data->group_cipher)) {
603 wpa_printf(MSG_DEBUG,
604 "%s: invalid group cipher 0x%x (%08x)",
605 __func__, data->group_cipher,
609 pos += RSN_SELECTOR_LEN;
610 left -= RSN_SELECTOR_LEN;
611 } else if (left > 0) {
612 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
618 data->pairwise_cipher = 0;
619 count = WPA_GET_LE16(pos);
622 if (count == 0 || count > left / RSN_SELECTOR_LEN) {
623 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
624 "count %u left %u", __func__, count, left);
627 for (i = 0; i < count; i++) {
628 data->pairwise_cipher |= rsn_selector_to_bitfield(pos);
629 pos += RSN_SELECTOR_LEN;
630 left -= RSN_SELECTOR_LEN;
632 #ifdef CONFIG_IEEE80211W
633 if (data->pairwise_cipher & WPA_CIPHER_AES_128_CMAC) {
634 wpa_printf(MSG_DEBUG, "%s: AES-128-CMAC used as "
635 "pairwise cipher", __func__);
638 #endif /* CONFIG_IEEE80211W */
639 } else if (left == 1) {
640 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
647 count = WPA_GET_LE16(pos);
650 if (count == 0 || count > left / RSN_SELECTOR_LEN) {
651 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
652 "count %u left %u", __func__, count, left);
655 for (i = 0; i < count; i++) {
656 data->key_mgmt |= rsn_key_mgmt_to_bitfield(pos);
657 pos += RSN_SELECTOR_LEN;
658 left -= RSN_SELECTOR_LEN;
660 } else if (left == 1) {
661 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
667 data->capabilities = WPA_GET_LE16(pos);
673 u16 num_pmkid = WPA_GET_LE16(pos);
676 if (num_pmkid > (unsigned int) left / PMKID_LEN) {
677 wpa_printf(MSG_DEBUG, "%s: PMKID underflow "
678 "(num_pmkid=%u left=%d)",
679 __func__, num_pmkid, left);
683 data->num_pmkid = num_pmkid;
685 pos += data->num_pmkid * PMKID_LEN;
686 left -= data->num_pmkid * PMKID_LEN;
690 #ifdef CONFIG_IEEE80211W
692 data->mgmt_group_cipher = rsn_selector_to_bitfield(pos);
693 if (!wpa_cipher_valid_mgmt_group(data->mgmt_group_cipher)) {
694 wpa_printf(MSG_DEBUG,
695 "%s: Unsupported management group cipher 0x%x (%08x)",
696 __func__, data->mgmt_group_cipher,
700 pos += RSN_SELECTOR_LEN;
701 left -= RSN_SELECTOR_LEN;
703 #endif /* CONFIG_IEEE80211W */
706 wpa_hexdump(MSG_DEBUG,
707 "wpa_parse_wpa_ie_rsn: ignore trailing bytes",
715 static int wpa_selector_to_bitfield(const u8 *s)
717 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_NONE)
718 return WPA_CIPHER_NONE;
719 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_TKIP)
720 return WPA_CIPHER_TKIP;
721 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_CCMP)
722 return WPA_CIPHER_CCMP;
727 static int wpa_key_mgmt_to_bitfield(const u8 *s)
729 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_UNSPEC_802_1X)
730 return WPA_KEY_MGMT_IEEE8021X;
731 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X)
732 return WPA_KEY_MGMT_PSK;
733 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_NONE)
734 return WPA_KEY_MGMT_WPA_NONE;
739 int wpa_parse_wpa_ie_wpa(const u8 *wpa_ie, size_t wpa_ie_len,
740 struct wpa_ie_data *data)
742 const struct wpa_ie_hdr *hdr;
747 os_memset(data, 0, sizeof(*data));
748 data->proto = WPA_PROTO_WPA;
749 data->pairwise_cipher = WPA_CIPHER_TKIP;
750 data->group_cipher = WPA_CIPHER_TKIP;
751 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
752 data->capabilities = 0;
755 data->mgmt_group_cipher = 0;
757 if (wpa_ie_len < sizeof(struct wpa_ie_hdr)) {
758 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
759 __func__, (unsigned long) wpa_ie_len);
763 hdr = (const struct wpa_ie_hdr *) wpa_ie;
765 if (hdr->elem_id != WLAN_EID_VENDOR_SPECIFIC ||
766 hdr->len != wpa_ie_len - 2 ||
767 RSN_SELECTOR_GET(hdr->oui) != WPA_OUI_TYPE ||
768 WPA_GET_LE16(hdr->version) != WPA_VERSION) {
769 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
774 pos = (const u8 *) (hdr + 1);
775 left = wpa_ie_len - sizeof(*hdr);
777 if (left >= WPA_SELECTOR_LEN) {
778 data->group_cipher = wpa_selector_to_bitfield(pos);
779 pos += WPA_SELECTOR_LEN;
780 left -= WPA_SELECTOR_LEN;
781 } else if (left > 0) {
782 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
788 data->pairwise_cipher = 0;
789 count = WPA_GET_LE16(pos);
792 if (count == 0 || count > left / WPA_SELECTOR_LEN) {
793 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
794 "count %u left %u", __func__, count, left);
797 for (i = 0; i < count; i++) {
798 data->pairwise_cipher |= wpa_selector_to_bitfield(pos);
799 pos += WPA_SELECTOR_LEN;
800 left -= WPA_SELECTOR_LEN;
802 } else if (left == 1) {
803 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
810 count = WPA_GET_LE16(pos);
813 if (count == 0 || count > left / WPA_SELECTOR_LEN) {
814 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
815 "count %u left %u", __func__, count, left);
818 for (i = 0; i < count; i++) {
819 data->key_mgmt |= wpa_key_mgmt_to_bitfield(pos);
820 pos += WPA_SELECTOR_LEN;
821 left -= WPA_SELECTOR_LEN;
823 } else if (left == 1) {
824 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
830 data->capabilities = WPA_GET_LE16(pos);
836 wpa_hexdump(MSG_DEBUG,
837 "wpa_parse_wpa_ie_wpa: ignore trailing bytes",
845 #ifdef CONFIG_IEEE80211R
848 * wpa_derive_pmk_r0 - Derive PMK-R0 and PMKR0Name
850 * IEEE Std 802.11r-2008 - 8.5.1.5.3
852 void wpa_derive_pmk_r0(const u8 *xxkey, size_t xxkey_len,
853 const u8 *ssid, size_t ssid_len,
854 const u8 *mdid, const u8 *r0kh_id, size_t r0kh_id_len,
855 const u8 *s0kh_id, u8 *pmk_r0, u8 *pmk_r0_name)
857 u8 buf[1 + SSID_MAX_LEN + MOBILITY_DOMAIN_ID_LEN + 1 +
858 FT_R0KH_ID_MAX_LEN + ETH_ALEN];
859 u8 *pos, r0_key_data[48], hash[32];
864 * R0-Key-Data = KDF-384(XXKey, "FT-R0",
865 * SSIDlength || SSID || MDID || R0KHlength ||
866 * R0KH-ID || S0KH-ID)
867 * XXKey is either the second 256 bits of MSK or PSK.
868 * PMK-R0 = L(R0-Key-Data, 0, 256)
869 * PMK-R0Name-Salt = L(R0-Key-Data, 256, 128)
871 if (ssid_len > SSID_MAX_LEN || r0kh_id_len > FT_R0KH_ID_MAX_LEN)
875 os_memcpy(pos, ssid, ssid_len);
877 os_memcpy(pos, mdid, MOBILITY_DOMAIN_ID_LEN);
878 pos += MOBILITY_DOMAIN_ID_LEN;
879 *pos++ = r0kh_id_len;
880 os_memcpy(pos, r0kh_id, r0kh_id_len);
882 os_memcpy(pos, s0kh_id, ETH_ALEN);
885 sha256_prf(xxkey, xxkey_len, "FT-R0", buf, pos - buf,
886 r0_key_data, sizeof(r0_key_data));
887 os_memcpy(pmk_r0, r0_key_data, PMK_LEN);
890 * PMKR0Name = Truncate-128(SHA-256("FT-R0N" || PMK-R0Name-Salt)
892 addr[0] = (const u8 *) "FT-R0N";
894 addr[1] = r0_key_data + PMK_LEN;
897 sha256_vector(2, addr, len, hash);
898 os_memcpy(pmk_r0_name, hash, WPA_PMK_NAME_LEN);
903 * wpa_derive_pmk_r1_name - Derive PMKR1Name
905 * IEEE Std 802.11r-2008 - 8.5.1.5.4
907 void wpa_derive_pmk_r1_name(const u8 *pmk_r0_name, const u8 *r1kh_id,
908 const u8 *s1kh_id, u8 *pmk_r1_name)
915 * PMKR1Name = Truncate-128(SHA-256("FT-R1N" || PMKR0Name ||
916 * R1KH-ID || S1KH-ID))
918 addr[0] = (const u8 *) "FT-R1N";
920 addr[1] = pmk_r0_name;
921 len[1] = WPA_PMK_NAME_LEN;
923 len[2] = FT_R1KH_ID_LEN;
927 sha256_vector(4, addr, len, hash);
928 os_memcpy(pmk_r1_name, hash, WPA_PMK_NAME_LEN);
933 * wpa_derive_pmk_r1 - Derive PMK-R1 and PMKR1Name from PMK-R0
935 * IEEE Std 802.11r-2008 - 8.5.1.5.4
937 void wpa_derive_pmk_r1(const u8 *pmk_r0, const u8 *pmk_r0_name,
938 const u8 *r1kh_id, const u8 *s1kh_id,
939 u8 *pmk_r1, u8 *pmk_r1_name)
941 u8 buf[FT_R1KH_ID_LEN + ETH_ALEN];
944 /* PMK-R1 = KDF-256(PMK-R0, "FT-R1", R1KH-ID || S1KH-ID) */
946 os_memcpy(pos, r1kh_id, FT_R1KH_ID_LEN);
947 pos += FT_R1KH_ID_LEN;
948 os_memcpy(pos, s1kh_id, ETH_ALEN);
951 sha256_prf(pmk_r0, PMK_LEN, "FT-R1", buf, pos - buf, pmk_r1, PMK_LEN);
953 wpa_derive_pmk_r1_name(pmk_r0_name, r1kh_id, s1kh_id, pmk_r1_name);
958 * wpa_pmk_r1_to_ptk - Derive PTK and PTKName from PMK-R1
960 * IEEE Std 802.11r-2008 - 8.5.1.5.5
962 int wpa_pmk_r1_to_ptk(const u8 *pmk_r1, const u8 *snonce, const u8 *anonce,
963 const u8 *sta_addr, const u8 *bssid,
964 const u8 *pmk_r1_name,
965 struct wpa_ptk *ptk, u8 *ptk_name, int akmp, int cipher)
967 u8 buf[2 * WPA_NONCE_LEN + 2 * ETH_ALEN];
971 u8 tmp[WPA_KCK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN];
975 * PTK = KDF-PTKLen(PMK-R1, "FT-PTK", SNonce || ANonce ||
979 os_memcpy(pos, snonce, WPA_NONCE_LEN);
980 pos += WPA_NONCE_LEN;
981 os_memcpy(pos, anonce, WPA_NONCE_LEN);
982 pos += WPA_NONCE_LEN;
983 os_memcpy(pos, bssid, ETH_ALEN);
985 os_memcpy(pos, sta_addr, ETH_ALEN);
988 ptk->kck_len = wpa_kck_len(akmp);
989 ptk->kek_len = wpa_kek_len(akmp);
990 ptk->tk_len = wpa_cipher_key_len(cipher);
991 ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len;
993 sha256_prf(pmk_r1, PMK_LEN, "FT-PTK", buf, pos - buf, tmp, ptk_len);
996 * PTKName = Truncate-128(SHA-256(PMKR1Name || "FT-PTKN" || SNonce ||
997 * ANonce || BSSID || STA-ADDR))
999 addr[0] = pmk_r1_name;
1000 len[0] = WPA_PMK_NAME_LEN;
1001 addr[1] = (const u8 *) "FT-PTKN";
1004 len[2] = WPA_NONCE_LEN;
1006 len[3] = WPA_NONCE_LEN;
1012 sha256_vector(6, addr, len, hash);
1013 os_memcpy(ptk_name, hash, WPA_PMK_NAME_LEN);
1015 os_memcpy(ptk->kck, tmp, ptk->kck_len);
1016 os_memcpy(ptk->kek, tmp + ptk->kck_len, ptk->kek_len);
1017 os_memcpy(ptk->tk, tmp + ptk->kck_len + ptk->kek_len, ptk->tk_len);
1019 wpa_hexdump_key(MSG_DEBUG, "FT: KCK", ptk->kck, ptk->kck_len);
1020 wpa_hexdump_key(MSG_DEBUG, "FT: KEK", ptk->kek, ptk->kek_len);
1021 wpa_hexdump_key(MSG_DEBUG, "FT: TK", ptk->tk, ptk->tk_len);
1022 wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN);
1024 os_memset(tmp, 0, sizeof(tmp));
1029 #endif /* CONFIG_IEEE80211R */
1033 * rsn_pmkid - Calculate PMK identifier
1034 * @pmk: Pairwise master key
1035 * @pmk_len: Length of pmk in bytes
1036 * @aa: Authenticator address
1037 * @spa: Supplicant address
1038 * @pmkid: Buffer for PMKID
1039 * @use_sha256: Whether to use SHA256-based KDF
1041 * IEEE Std 802.11i-2004 - 8.5.1.2 Pairwise key hierarchy
1042 * PMKID = HMAC-SHA1-128(PMK, "PMK Name" || AA || SPA)
1044 void rsn_pmkid(const u8 *pmk, size_t pmk_len, const u8 *aa, const u8 *spa,
1045 u8 *pmkid, int use_sha256)
1047 char *title = "PMK Name";
1049 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1050 unsigned char hash[SHA256_MAC_LEN];
1052 addr[0] = (u8 *) title;
1056 #ifdef CONFIG_IEEE80211W
1058 hmac_sha256_vector(pmk, pmk_len, 3, addr, len, hash);
1060 #endif /* CONFIG_IEEE80211W */
1061 hmac_sha1_vector(pmk, pmk_len, 3, addr, len, hash);
1062 os_memcpy(pmkid, hash, PMKID_LEN);
1066 #ifdef CONFIG_SUITEB
1068 * rsn_pmkid_suite_b - Calculate PMK identifier for Suite B AKM
1069 * @kck: Key confirmation key
1070 * @kck_len: Length of kck in bytes
1071 * @aa: Authenticator address
1072 * @spa: Supplicant address
1073 * @pmkid: Buffer for PMKID
1074 * Returns: 0 on success, -1 on failure
1076 * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
1077 * PMKID = Truncate(HMAC-SHA-256(KCK, "PMK Name" || AA || SPA))
1079 int rsn_pmkid_suite_b(const u8 *kck, size_t kck_len, const u8 *aa,
1080 const u8 *spa, u8 *pmkid)
1082 char *title = "PMK Name";
1084 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1085 unsigned char hash[SHA256_MAC_LEN];
1087 addr[0] = (u8 *) title;
1091 if (hmac_sha256_vector(kck, kck_len, 3, addr, len, hash) < 0)
1093 os_memcpy(pmkid, hash, PMKID_LEN);
1096 #endif /* CONFIG_SUITEB */
1099 #ifdef CONFIG_SUITEB192
1101 * rsn_pmkid_suite_b_192 - Calculate PMK identifier for Suite B AKM
1102 * @kck: Key confirmation key
1103 * @kck_len: Length of kck in bytes
1104 * @aa: Authenticator address
1105 * @spa: Supplicant address
1106 * @pmkid: Buffer for PMKID
1107 * Returns: 0 on success, -1 on failure
1109 * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
1110 * PMKID = Truncate(HMAC-SHA-384(KCK, "PMK Name" || AA || SPA))
1112 int rsn_pmkid_suite_b_192(const u8 *kck, size_t kck_len, const u8 *aa,
1113 const u8 *spa, u8 *pmkid)
1115 char *title = "PMK Name";
1117 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1118 unsigned char hash[SHA384_MAC_LEN];
1120 addr[0] = (u8 *) title;
1124 if (hmac_sha384_vector(kck, kck_len, 3, addr, len, hash) < 0)
1126 os_memcpy(pmkid, hash, PMKID_LEN);
1129 #endif /* CONFIG_SUITEB192 */
1133 * wpa_cipher_txt - Convert cipher suite to a text string
1134 * @cipher: Cipher suite (WPA_CIPHER_* enum)
1135 * Returns: Pointer to a text string of the cipher suite name
1137 const char * wpa_cipher_txt(int cipher)
1140 case WPA_CIPHER_NONE:
1142 case WPA_CIPHER_WEP40:
1144 case WPA_CIPHER_WEP104:
1146 case WPA_CIPHER_TKIP:
1148 case WPA_CIPHER_CCMP:
1150 case WPA_CIPHER_CCMP | WPA_CIPHER_TKIP:
1152 case WPA_CIPHER_GCMP:
1154 case WPA_CIPHER_GCMP_256:
1156 case WPA_CIPHER_CCMP_256:
1158 case WPA_CIPHER_GTK_NOT_USED:
1159 return "GTK_NOT_USED";
1167 * wpa_key_mgmt_txt - Convert key management suite to a text string
1168 * @key_mgmt: Key management suite (WPA_KEY_MGMT_* enum)
1169 * @proto: WPA/WPA2 version (WPA_PROTO_*)
1170 * Returns: Pointer to a text string of the key management suite name
1172 const char * wpa_key_mgmt_txt(int key_mgmt, int proto)
1175 case WPA_KEY_MGMT_IEEE8021X:
1176 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
1177 return "WPA2+WPA/IEEE 802.1X/EAP";
1178 return proto == WPA_PROTO_RSN ?
1179 "WPA2/IEEE 802.1X/EAP" : "WPA/IEEE 802.1X/EAP";
1180 case WPA_KEY_MGMT_PSK:
1181 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
1182 return "WPA2-PSK+WPA-PSK";
1183 return proto == WPA_PROTO_RSN ?
1184 "WPA2-PSK" : "WPA-PSK";
1185 case WPA_KEY_MGMT_NONE:
1187 case WPA_KEY_MGMT_WPA_NONE:
1189 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
1190 return "IEEE 802.1X (no WPA)";
1191 #ifdef CONFIG_IEEE80211R
1192 case WPA_KEY_MGMT_FT_IEEE8021X:
1194 case WPA_KEY_MGMT_FT_PSK:
1196 #endif /* CONFIG_IEEE80211R */
1197 #ifdef CONFIG_IEEE80211W
1198 case WPA_KEY_MGMT_IEEE8021X_SHA256:
1199 return "WPA2-EAP-SHA256";
1200 case WPA_KEY_MGMT_PSK_SHA256:
1201 return "WPA2-PSK-SHA256";
1202 #endif /* CONFIG_IEEE80211W */
1203 case WPA_KEY_MGMT_WPS:
1205 case WPA_KEY_MGMT_SAE:
1207 case WPA_KEY_MGMT_FT_SAE:
1209 case WPA_KEY_MGMT_OSEN:
1211 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
1212 return "WPA2-EAP-SUITE-B";
1213 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
1214 return "WPA2-EAP-SUITE-B-192";
1221 u32 wpa_akm_to_suite(int akm)
1223 if (akm & WPA_KEY_MGMT_FT_IEEE8021X)
1224 return WLAN_AKM_SUITE_FT_8021X;
1225 if (akm & WPA_KEY_MGMT_FT_PSK)
1226 return WLAN_AKM_SUITE_FT_PSK;
1227 if (akm & WPA_KEY_MGMT_IEEE8021X)
1228 return WLAN_AKM_SUITE_8021X;
1229 if (akm & WPA_KEY_MGMT_IEEE8021X_SHA256)
1230 return WLAN_AKM_SUITE_8021X_SHA256;
1231 if (akm & WPA_KEY_MGMT_IEEE8021X)
1232 return WLAN_AKM_SUITE_8021X;
1233 if (akm & WPA_KEY_MGMT_PSK_SHA256)
1234 return WLAN_AKM_SUITE_PSK_SHA256;
1235 if (akm & WPA_KEY_MGMT_PSK)
1236 return WLAN_AKM_SUITE_PSK;
1237 if (akm & WPA_KEY_MGMT_CCKM)
1238 return WLAN_AKM_SUITE_CCKM;
1239 if (akm & WPA_KEY_MGMT_OSEN)
1240 return WLAN_AKM_SUITE_OSEN;
1241 if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B)
1242 return WLAN_AKM_SUITE_8021X_SUITE_B;
1243 if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
1244 return WLAN_AKM_SUITE_8021X_SUITE_B_192;
1249 int wpa_compare_rsn_ie(int ft_initial_assoc,
1250 const u8 *ie1, size_t ie1len,
1251 const u8 *ie2, size_t ie2len)
1253 if (ie1 == NULL || ie2 == NULL)
1256 if (ie1len == ie2len && os_memcmp(ie1, ie2, ie1len) == 0)
1257 return 0; /* identical IEs */
1259 #ifdef CONFIG_IEEE80211R
1260 if (ft_initial_assoc) {
1261 struct wpa_ie_data ie1d, ie2d;
1263 * The PMKID-List in RSN IE is different between Beacon/Probe
1264 * Response/(Re)Association Request frames and EAPOL-Key
1265 * messages in FT initial mobility domain association. Allow
1266 * for this, but verify that other parts of the RSN IEs are
1269 if (wpa_parse_wpa_ie_rsn(ie1, ie1len, &ie1d) < 0 ||
1270 wpa_parse_wpa_ie_rsn(ie2, ie2len, &ie2d) < 0)
1272 if (ie1d.proto == ie2d.proto &&
1273 ie1d.pairwise_cipher == ie2d.pairwise_cipher &&
1274 ie1d.group_cipher == ie2d.group_cipher &&
1275 ie1d.key_mgmt == ie2d.key_mgmt &&
1276 ie1d.capabilities == ie2d.capabilities &&
1277 ie1d.mgmt_group_cipher == ie2d.mgmt_group_cipher)
1280 #endif /* CONFIG_IEEE80211R */
1286 #ifdef CONFIG_IEEE80211R
1287 int wpa_insert_pmkid(u8 *ies, size_t *ies_len, const u8 *pmkid)
1289 u8 *start, *end, *rpos, *rend;
1293 end = ies + *ies_len;
1295 while (start < end) {
1296 if (*start == WLAN_EID_RSN)
1298 start += 2 + start[1];
1301 wpa_printf(MSG_ERROR, "FT: Could not find RSN IE in "
1305 wpa_hexdump(MSG_DEBUG, "FT: RSN IE before modification",
1306 start, 2 + start[1]);
1308 /* Find start of PMKID-Count */
1310 rend = rpos + start[1];
1312 /* Skip Version and Group Data Cipher Suite */
1314 /* Skip Pairwise Cipher Suite Count and List */
1315 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
1316 /* Skip AKM Suite Count and List */
1317 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
1320 /* Add RSN Capabilities */
1321 os_memmove(rpos + 2, rpos, end - rpos);
1328 /* Skip RSN Capabilities */
1331 wpa_printf(MSG_ERROR, "FT: Could not parse RSN IE in "
1338 /* No PMKID-Count field included; add it */
1339 os_memmove(rpos + 2 + PMKID_LEN, rpos, end + added - rpos);
1340 WPA_PUT_LE16(rpos, 1);
1342 os_memcpy(rpos, pmkid, PMKID_LEN);
1343 added += 2 + PMKID_LEN;
1344 start[1] += 2 + PMKID_LEN;
1348 if (rend - rpos < 2)
1350 num_pmkid = WPA_GET_LE16(rpos);
1351 /* PMKID-Count was included; use it */
1352 if (num_pmkid != 0) {
1355 if (num_pmkid * PMKID_LEN > rend - rpos - 2)
1358 * PMKID may have been included in RSN IE in
1359 * (Re)Association Request frame, so remove the old
1360 * PMKID(s) first before adding the new one.
1362 wpa_printf(MSG_DEBUG,
1363 "FT: Remove %u old PMKID(s) from RSN IE",
1365 after = rpos + 2 + num_pmkid * PMKID_LEN;
1366 os_memmove(rpos + 2, after, rend - after);
1367 start[1] -= num_pmkid * PMKID_LEN;
1368 added -= num_pmkid * PMKID_LEN;
1370 WPA_PUT_LE16(rpos, 1);
1372 os_memmove(rpos + PMKID_LEN, rpos, end + added - rpos);
1373 os_memcpy(rpos, pmkid, PMKID_LEN);
1375 start[1] += PMKID_LEN;
1378 wpa_hexdump(MSG_DEBUG, "FT: RSN IE after modification "
1379 "(PMKID inserted)", start, 2 + start[1]);
1385 #endif /* CONFIG_IEEE80211R */
1388 int wpa_cipher_key_len(int cipher)
1391 case WPA_CIPHER_CCMP_256:
1392 case WPA_CIPHER_GCMP_256:
1393 case WPA_CIPHER_BIP_GMAC_256:
1394 case WPA_CIPHER_BIP_CMAC_256:
1396 case WPA_CIPHER_CCMP:
1397 case WPA_CIPHER_GCMP:
1398 case WPA_CIPHER_AES_128_CMAC:
1399 case WPA_CIPHER_BIP_GMAC_128:
1401 case WPA_CIPHER_TKIP:
1409 int wpa_cipher_rsc_len(int cipher)
1412 case WPA_CIPHER_CCMP_256:
1413 case WPA_CIPHER_GCMP_256:
1414 case WPA_CIPHER_CCMP:
1415 case WPA_CIPHER_GCMP:
1416 case WPA_CIPHER_TKIP:
1424 int wpa_cipher_to_alg(int cipher)
1427 case WPA_CIPHER_CCMP_256:
1428 return WPA_ALG_CCMP_256;
1429 case WPA_CIPHER_GCMP_256:
1430 return WPA_ALG_GCMP_256;
1431 case WPA_CIPHER_CCMP:
1432 return WPA_ALG_CCMP;
1433 case WPA_CIPHER_GCMP:
1434 return WPA_ALG_GCMP;
1435 case WPA_CIPHER_TKIP:
1436 return WPA_ALG_TKIP;
1437 case WPA_CIPHER_AES_128_CMAC:
1438 return WPA_ALG_IGTK;
1439 case WPA_CIPHER_BIP_GMAC_128:
1440 return WPA_ALG_BIP_GMAC_128;
1441 case WPA_CIPHER_BIP_GMAC_256:
1442 return WPA_ALG_BIP_GMAC_256;
1443 case WPA_CIPHER_BIP_CMAC_256:
1444 return WPA_ALG_BIP_CMAC_256;
1446 return WPA_ALG_NONE;
1450 int wpa_cipher_valid_pairwise(int cipher)
1452 return cipher == WPA_CIPHER_CCMP_256 ||
1453 cipher == WPA_CIPHER_GCMP_256 ||
1454 cipher == WPA_CIPHER_CCMP ||
1455 cipher == WPA_CIPHER_GCMP ||
1456 cipher == WPA_CIPHER_TKIP;
1460 u32 wpa_cipher_to_suite(int proto, int cipher)
1462 if (cipher & WPA_CIPHER_CCMP_256)
1463 return RSN_CIPHER_SUITE_CCMP_256;
1464 if (cipher & WPA_CIPHER_GCMP_256)
1465 return RSN_CIPHER_SUITE_GCMP_256;
1466 if (cipher & WPA_CIPHER_CCMP)
1467 return (proto == WPA_PROTO_RSN ?
1468 RSN_CIPHER_SUITE_CCMP : WPA_CIPHER_SUITE_CCMP);
1469 if (cipher & WPA_CIPHER_GCMP)
1470 return RSN_CIPHER_SUITE_GCMP;
1471 if (cipher & WPA_CIPHER_TKIP)
1472 return (proto == WPA_PROTO_RSN ?
1473 RSN_CIPHER_SUITE_TKIP : WPA_CIPHER_SUITE_TKIP);
1474 if (cipher & WPA_CIPHER_NONE)
1475 return (proto == WPA_PROTO_RSN ?
1476 RSN_CIPHER_SUITE_NONE : WPA_CIPHER_SUITE_NONE);
1477 if (cipher & WPA_CIPHER_GTK_NOT_USED)
1478 return RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED;
1479 if (cipher & WPA_CIPHER_AES_128_CMAC)
1480 return RSN_CIPHER_SUITE_AES_128_CMAC;
1481 if (cipher & WPA_CIPHER_BIP_GMAC_128)
1482 return RSN_CIPHER_SUITE_BIP_GMAC_128;
1483 if (cipher & WPA_CIPHER_BIP_GMAC_256)
1484 return RSN_CIPHER_SUITE_BIP_GMAC_256;
1485 if (cipher & WPA_CIPHER_BIP_CMAC_256)
1486 return RSN_CIPHER_SUITE_BIP_CMAC_256;
1491 int rsn_cipher_put_suites(u8 *start, int ciphers)
1495 if (ciphers & WPA_CIPHER_CCMP_256) {
1496 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP_256);
1497 pos += RSN_SELECTOR_LEN;
1499 if (ciphers & WPA_CIPHER_GCMP_256) {
1500 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP_256);
1501 pos += RSN_SELECTOR_LEN;
1503 if (ciphers & WPA_CIPHER_CCMP) {
1504 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP);
1505 pos += RSN_SELECTOR_LEN;
1507 if (ciphers & WPA_CIPHER_GCMP) {
1508 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP);
1509 pos += RSN_SELECTOR_LEN;
1511 if (ciphers & WPA_CIPHER_TKIP) {
1512 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_TKIP);
1513 pos += RSN_SELECTOR_LEN;
1515 if (ciphers & WPA_CIPHER_NONE) {
1516 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NONE);
1517 pos += RSN_SELECTOR_LEN;
1520 return (pos - start) / RSN_SELECTOR_LEN;
1524 int wpa_cipher_put_suites(u8 *start, int ciphers)
1528 if (ciphers & WPA_CIPHER_CCMP) {
1529 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_CCMP);
1530 pos += WPA_SELECTOR_LEN;
1532 if (ciphers & WPA_CIPHER_TKIP) {
1533 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_TKIP);
1534 pos += WPA_SELECTOR_LEN;
1536 if (ciphers & WPA_CIPHER_NONE) {
1537 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_NONE);
1538 pos += WPA_SELECTOR_LEN;
1541 return (pos - start) / RSN_SELECTOR_LEN;
1545 int wpa_pick_pairwise_cipher(int ciphers, int none_allowed)
1547 if (ciphers & WPA_CIPHER_CCMP_256)
1548 return WPA_CIPHER_CCMP_256;
1549 if (ciphers & WPA_CIPHER_GCMP_256)
1550 return WPA_CIPHER_GCMP_256;
1551 if (ciphers & WPA_CIPHER_CCMP)
1552 return WPA_CIPHER_CCMP;
1553 if (ciphers & WPA_CIPHER_GCMP)
1554 return WPA_CIPHER_GCMP;
1555 if (ciphers & WPA_CIPHER_TKIP)
1556 return WPA_CIPHER_TKIP;
1557 if (none_allowed && (ciphers & WPA_CIPHER_NONE))
1558 return WPA_CIPHER_NONE;
1563 int wpa_pick_group_cipher(int ciphers)
1565 if (ciphers & WPA_CIPHER_CCMP_256)
1566 return WPA_CIPHER_CCMP_256;
1567 if (ciphers & WPA_CIPHER_GCMP_256)
1568 return WPA_CIPHER_GCMP_256;
1569 if (ciphers & WPA_CIPHER_CCMP)
1570 return WPA_CIPHER_CCMP;
1571 if (ciphers & WPA_CIPHER_GCMP)
1572 return WPA_CIPHER_GCMP;
1573 if (ciphers & WPA_CIPHER_GTK_NOT_USED)
1574 return WPA_CIPHER_GTK_NOT_USED;
1575 if (ciphers & WPA_CIPHER_TKIP)
1576 return WPA_CIPHER_TKIP;
1581 int wpa_parse_cipher(const char *value)
1584 char *start, *end, *buf;
1586 buf = os_strdup(value);
1591 while (*start != '\0') {
1592 while (*start == ' ' || *start == '\t')
1597 while (*end != ' ' && *end != '\t' && *end != '\0')
1599 last = *end == '\0';
1601 if (os_strcmp(start, "CCMP-256") == 0)
1602 val |= WPA_CIPHER_CCMP_256;
1603 else if (os_strcmp(start, "GCMP-256") == 0)
1604 val |= WPA_CIPHER_GCMP_256;
1605 else if (os_strcmp(start, "CCMP") == 0)
1606 val |= WPA_CIPHER_CCMP;
1607 else if (os_strcmp(start, "GCMP") == 0)
1608 val |= WPA_CIPHER_GCMP;
1609 else if (os_strcmp(start, "TKIP") == 0)
1610 val |= WPA_CIPHER_TKIP;
1611 else if (os_strcmp(start, "WEP104") == 0)
1612 val |= WPA_CIPHER_WEP104;
1613 else if (os_strcmp(start, "WEP40") == 0)
1614 val |= WPA_CIPHER_WEP40;
1615 else if (os_strcmp(start, "NONE") == 0)
1616 val |= WPA_CIPHER_NONE;
1617 else if (os_strcmp(start, "GTK_NOT_USED") == 0)
1618 val |= WPA_CIPHER_GTK_NOT_USED;
1634 int wpa_write_ciphers(char *start, char *end, int ciphers, const char *delim)
1639 if (ciphers & WPA_CIPHER_CCMP_256) {
1640 ret = os_snprintf(pos, end - pos, "%sCCMP-256",
1641 pos == start ? "" : delim);
1642 if (os_snprintf_error(end - pos, ret))
1646 if (ciphers & WPA_CIPHER_GCMP_256) {
1647 ret = os_snprintf(pos, end - pos, "%sGCMP-256",
1648 pos == start ? "" : delim);
1649 if (os_snprintf_error(end - pos, ret))
1653 if (ciphers & WPA_CIPHER_CCMP) {
1654 ret = os_snprintf(pos, end - pos, "%sCCMP",
1655 pos == start ? "" : delim);
1656 if (os_snprintf_error(end - pos, ret))
1660 if (ciphers & WPA_CIPHER_GCMP) {
1661 ret = os_snprintf(pos, end - pos, "%sGCMP",
1662 pos == start ? "" : delim);
1663 if (os_snprintf_error(end - pos, ret))
1667 if (ciphers & WPA_CIPHER_TKIP) {
1668 ret = os_snprintf(pos, end - pos, "%sTKIP",
1669 pos == start ? "" : delim);
1670 if (os_snprintf_error(end - pos, ret))
1674 if (ciphers & WPA_CIPHER_NONE) {
1675 ret = os_snprintf(pos, end - pos, "%sNONE",
1676 pos == start ? "" : delim);
1677 if (os_snprintf_error(end - pos, ret))
1686 int wpa_select_ap_group_cipher(int wpa, int wpa_pairwise, int rsn_pairwise)
1690 /* Select group cipher based on the enabled pairwise cipher suites */
1692 pairwise |= wpa_pairwise;
1694 pairwise |= rsn_pairwise;
1696 if (pairwise & WPA_CIPHER_TKIP)
1697 return WPA_CIPHER_TKIP;
1698 if ((pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP)
1699 return WPA_CIPHER_GCMP;
1700 if ((pairwise & (WPA_CIPHER_GCMP_256 | WPA_CIPHER_CCMP |
1701 WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP_256)
1702 return WPA_CIPHER_GCMP_256;
1703 if ((pairwise & (WPA_CIPHER_CCMP_256 | WPA_CIPHER_CCMP |
1704 WPA_CIPHER_GCMP)) == WPA_CIPHER_CCMP_256)
1705 return WPA_CIPHER_CCMP_256;
1706 return WPA_CIPHER_CCMP;