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[thirdparty/hostap.git] / src / common / wpa_common.c
1 /*
2 * WPA/RSN - Shared functions for supplicant and authenticator
3 * Copyright (c) 2002-2018, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "crypto/md5.h"
13 #include "crypto/sha1.h"
14 #include "crypto/sha256.h"
15 #include "crypto/sha384.h"
16 #include "crypto/sha512.h"
17 #include "crypto/aes_wrap.h"
18 #include "crypto/crypto.h"
19 #include "ieee802_11_defs.h"
20 #include "defs.h"
21 #include "wpa_common.h"
22
23
24 static unsigned int wpa_kck_len(int akmp, size_t pmk_len)
25 {
26 switch (akmp) {
27 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
28 case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
29 return 24;
30 case WPA_KEY_MGMT_FILS_SHA256:
31 case WPA_KEY_MGMT_FT_FILS_SHA256:
32 case WPA_KEY_MGMT_FILS_SHA384:
33 case WPA_KEY_MGMT_FT_FILS_SHA384:
34 return 0;
35 case WPA_KEY_MGMT_DPP:
36 return pmk_len / 2;
37 case WPA_KEY_MGMT_OWE:
38 return pmk_len / 2;
39 default:
40 return 16;
41 }
42 }
43
44
45 #ifdef CONFIG_IEEE80211R
46 static unsigned int wpa_kck2_len(int akmp)
47 {
48 switch (akmp) {
49 case WPA_KEY_MGMT_FT_FILS_SHA256:
50 return 16;
51 case WPA_KEY_MGMT_FT_FILS_SHA384:
52 return 24;
53 default:
54 return 0;
55 }
56 }
57 #endif /* CONFIG_IEEE80211R */
58
59
60 static unsigned int wpa_kek_len(int akmp, size_t pmk_len)
61 {
62 switch (akmp) {
63 case WPA_KEY_MGMT_FILS_SHA384:
64 case WPA_KEY_MGMT_FT_FILS_SHA384:
65 return 64;
66 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
67 case WPA_KEY_MGMT_FILS_SHA256:
68 case WPA_KEY_MGMT_FT_FILS_SHA256:
69 case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
70 return 32;
71 case WPA_KEY_MGMT_DPP:
72 return pmk_len <= 32 ? 16 : 32;
73 case WPA_KEY_MGMT_OWE:
74 return pmk_len <= 32 ? 16 : 32;
75 default:
76 return 16;
77 }
78 }
79
80
81 #ifdef CONFIG_IEEE80211R
82 static unsigned int wpa_kek2_len(int akmp)
83 {
84 switch (akmp) {
85 case WPA_KEY_MGMT_FT_FILS_SHA256:
86 return 16;
87 case WPA_KEY_MGMT_FT_FILS_SHA384:
88 return 32;
89 default:
90 return 0;
91 }
92 }
93 #endif /* CONFIG_IEEE80211R */
94
95
96 unsigned int wpa_mic_len(int akmp, size_t pmk_len)
97 {
98 switch (akmp) {
99 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
100 case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
101 return 24;
102 case WPA_KEY_MGMT_FILS_SHA256:
103 case WPA_KEY_MGMT_FILS_SHA384:
104 case WPA_KEY_MGMT_FT_FILS_SHA256:
105 case WPA_KEY_MGMT_FT_FILS_SHA384:
106 return 0;
107 case WPA_KEY_MGMT_DPP:
108 return pmk_len / 2;
109 case WPA_KEY_MGMT_OWE:
110 return pmk_len / 2;
111 default:
112 return 16;
113 }
114 }
115
116
117 /**
118 * wpa_use_akm_defined - Is AKM-defined Key Descriptor Version used
119 * @akmp: WPA_KEY_MGMT_* used in key derivation
120 * Returns: 1 if AKM-defined Key Descriptor Version is used; 0 otherwise
121 */
122 int wpa_use_akm_defined(int akmp)
123 {
124 return akmp == WPA_KEY_MGMT_OSEN ||
125 akmp == WPA_KEY_MGMT_OWE ||
126 akmp == WPA_KEY_MGMT_DPP ||
127 akmp == WPA_KEY_MGMT_FT_IEEE8021X_SHA384 ||
128 wpa_key_mgmt_sae(akmp) ||
129 wpa_key_mgmt_suite_b(akmp) ||
130 wpa_key_mgmt_fils(akmp);
131 }
132
133
134 /**
135 * wpa_use_cmac - Is CMAC integrity algorithm used for EAPOL-Key MIC
136 * @akmp: WPA_KEY_MGMT_* used in key derivation
137 * Returns: 1 if CMAC is used; 0 otherwise
138 */
139 int wpa_use_cmac(int akmp)
140 {
141 return akmp == WPA_KEY_MGMT_OSEN ||
142 akmp == WPA_KEY_MGMT_OWE ||
143 akmp == WPA_KEY_MGMT_DPP ||
144 wpa_key_mgmt_ft(akmp) ||
145 wpa_key_mgmt_sha256(akmp) ||
146 wpa_key_mgmt_sae(akmp) ||
147 wpa_key_mgmt_suite_b(akmp);
148 }
149
150
151 /**
152 * wpa_use_aes_key_wrap - Is AES Keywrap algorithm used for EAPOL-Key Key Data
153 * @akmp: WPA_KEY_MGMT_* used in key derivation
154 * Returns: 1 if AES Keywrap is used; 0 otherwise
155 *
156 * Note: AKM 00-0F-AC:1 and 00-0F-AC:2 have special rules for selecting whether
157 * to use AES Keywrap based on the negotiated pairwise cipher. This function
158 * does not cover those special cases.
159 */
160 int wpa_use_aes_key_wrap(int akmp)
161 {
162 return akmp == WPA_KEY_MGMT_OSEN ||
163 akmp == WPA_KEY_MGMT_OWE ||
164 akmp == WPA_KEY_MGMT_DPP ||
165 wpa_key_mgmt_ft(akmp) ||
166 wpa_key_mgmt_sha256(akmp) ||
167 wpa_key_mgmt_sae(akmp) ||
168 wpa_key_mgmt_suite_b(akmp);
169 }
170
171
172 /**
173 * wpa_eapol_key_mic - Calculate EAPOL-Key MIC
174 * @key: EAPOL-Key Key Confirmation Key (KCK)
175 * @key_len: KCK length in octets
176 * @akmp: WPA_KEY_MGMT_* used in key derivation
177 * @ver: Key descriptor version (WPA_KEY_INFO_TYPE_*)
178 * @buf: Pointer to the beginning of the EAPOL header (version field)
179 * @len: Length of the EAPOL frame (from EAPOL header to the end of the frame)
180 * @mic: Pointer to the buffer to which the EAPOL-Key MIC is written
181 * Returns: 0 on success, -1 on failure
182 *
183 * Calculate EAPOL-Key MIC for an EAPOL-Key packet. The EAPOL-Key MIC field has
184 * to be cleared (all zeroes) when calling this function.
185 *
186 * Note: 'IEEE Std 802.11i-2004 - 8.5.2 EAPOL-Key frames' has an error in the
187 * description of the Key MIC calculation. It includes packet data from the
188 * beginning of the EAPOL-Key header, not EAPOL header. This incorrect change
189 * happened during final editing of the standard and the correct behavior is
190 * defined in the last draft (IEEE 802.11i/D10).
191 */
192 int wpa_eapol_key_mic(const u8 *key, size_t key_len, int akmp, int ver,
193 const u8 *buf, size_t len, u8 *mic)
194 {
195 u8 hash[SHA512_MAC_LEN];
196
197 if (key_len == 0) {
198 wpa_printf(MSG_DEBUG,
199 "WPA: KCK not set - cannot calculate MIC");
200 return -1;
201 }
202
203 switch (ver) {
204 #ifndef CONFIG_FIPS
205 case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4:
206 wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key MIC using HMAC-MD5");
207 return hmac_md5(key, key_len, buf, len, mic);
208 #endif /* CONFIG_FIPS */
209 case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES:
210 wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key MIC using HMAC-SHA1");
211 if (hmac_sha1(key, key_len, buf, len, hash))
212 return -1;
213 os_memcpy(mic, hash, MD5_MAC_LEN);
214 break;
215 #if defined(CONFIG_IEEE80211R) || defined(CONFIG_IEEE80211W)
216 case WPA_KEY_INFO_TYPE_AES_128_CMAC:
217 wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key MIC using AES-CMAC");
218 return omac1_aes_128(key, buf, len, mic);
219 #endif /* CONFIG_IEEE80211R || CONFIG_IEEE80211W */
220 case WPA_KEY_INFO_TYPE_AKM_DEFINED:
221 switch (akmp) {
222 #ifdef CONFIG_SAE
223 case WPA_KEY_MGMT_SAE:
224 case WPA_KEY_MGMT_FT_SAE:
225 wpa_printf(MSG_DEBUG,
226 "WPA: EAPOL-Key MIC using AES-CMAC (AKM-defined - SAE)");
227 return omac1_aes_128(key, buf, len, mic);
228 #endif /* CONFIG_SAE */
229 #ifdef CONFIG_HS20
230 case WPA_KEY_MGMT_OSEN:
231 wpa_printf(MSG_DEBUG,
232 "WPA: EAPOL-Key MIC using AES-CMAC (AKM-defined - OSEN)");
233 return omac1_aes_128(key, buf, len, mic);
234 #endif /* CONFIG_HS20 */
235 #ifdef CONFIG_SUITEB
236 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
237 wpa_printf(MSG_DEBUG,
238 "WPA: EAPOL-Key MIC using HMAC-SHA256 (AKM-defined - Suite B)");
239 if (hmac_sha256(key, key_len, buf, len, hash))
240 return -1;
241 os_memcpy(mic, hash, MD5_MAC_LEN);
242 break;
243 #endif /* CONFIG_SUITEB */
244 #ifdef CONFIG_SUITEB192
245 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
246 wpa_printf(MSG_DEBUG,
247 "WPA: EAPOL-Key MIC using HMAC-SHA384 (AKM-defined - Suite B 192-bit)");
248 if (hmac_sha384(key, key_len, buf, len, hash))
249 return -1;
250 os_memcpy(mic, hash, 24);
251 break;
252 #endif /* CONFIG_SUITEB192 */
253 #ifdef CONFIG_OWE
254 case WPA_KEY_MGMT_OWE:
255 wpa_printf(MSG_DEBUG,
256 "WPA: EAPOL-Key MIC using HMAC-SHA%u (AKM-defined - OWE)",
257 (unsigned int) key_len * 8 * 2);
258 if (key_len == 128 / 8) {
259 if (hmac_sha256(key, key_len, buf, len, hash))
260 return -1;
261 } else if (key_len == 192 / 8) {
262 if (hmac_sha384(key, key_len, buf, len, hash))
263 return -1;
264 } else if (key_len == 256 / 8) {
265 if (hmac_sha512(key, key_len, buf, len, hash))
266 return -1;
267 } else {
268 wpa_printf(MSG_INFO,
269 "OWE: Unsupported KCK length: %u",
270 (unsigned int) key_len);
271 return -1;
272 }
273 os_memcpy(mic, hash, key_len);
274 break;
275 #endif /* CONFIG_OWE */
276 #ifdef CONFIG_DPP
277 case WPA_KEY_MGMT_DPP:
278 wpa_printf(MSG_DEBUG,
279 "WPA: EAPOL-Key MIC using HMAC-SHA%u (AKM-defined - DPP)",
280 (unsigned int) key_len * 8 * 2);
281 if (key_len == 128 / 8) {
282 if (hmac_sha256(key, key_len, buf, len, hash))
283 return -1;
284 } else if (key_len == 192 / 8) {
285 if (hmac_sha384(key, key_len, buf, len, hash))
286 return -1;
287 } else if (key_len == 256 / 8) {
288 if (hmac_sha512(key, key_len, buf, len, hash))
289 return -1;
290 } else {
291 wpa_printf(MSG_INFO,
292 "DPP: Unsupported KCK length: %u",
293 (unsigned int) key_len);
294 return -1;
295 }
296 os_memcpy(mic, hash, key_len);
297 break;
298 #endif /* CONFIG_DPP */
299 #if defined(CONFIG_IEEE80211R) && defined(CONFIG_SHA384)
300 case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
301 wpa_printf(MSG_DEBUG,
302 "WPA: EAPOL-Key MIC using HMAC-SHA384 (AKM-defined - FT 802.1X SHA384)");
303 if (hmac_sha384(key, key_len, buf, len, hash))
304 return -1;
305 os_memcpy(mic, hash, 24);
306 break;
307 #endif /* CONFIG_IEEE80211R && CONFIG_SHA384 */
308 default:
309 wpa_printf(MSG_DEBUG,
310 "WPA: EAPOL-Key MIC algorithm not known (AKM-defined - akmp=0x%x)",
311 akmp);
312 return -1;
313 }
314 break;
315 default:
316 wpa_printf(MSG_DEBUG,
317 "WPA: EAPOL-Key MIC algorithm not known (ver=%d)",
318 ver);
319 return -1;
320 }
321
322 return 0;
323 }
324
325
326 /**
327 * wpa_pmk_to_ptk - Calculate PTK from PMK, addresses, and nonces
328 * @pmk: Pairwise master key
329 * @pmk_len: Length of PMK
330 * @label: Label to use in derivation
331 * @addr1: AA or SA
332 * @addr2: SA or AA
333 * @nonce1: ANonce or SNonce
334 * @nonce2: SNonce or ANonce
335 * @ptk: Buffer for pairwise transient key
336 * @akmp: Negotiated AKM
337 * @cipher: Negotiated pairwise cipher
338 * Returns: 0 on success, -1 on failure
339 *
340 * IEEE Std 802.11i-2004 - 8.5.1.2 Pairwise key hierarchy
341 * PTK = PRF-X(PMK, "Pairwise key expansion",
342 * Min(AA, SA) || Max(AA, SA) ||
343 * Min(ANonce, SNonce) || Max(ANonce, SNonce)
344 * [ || Z.x ])
345 *
346 * The optional Z.x component is used only with DPP and that part is not defined
347 * in IEEE 802.11.
348 */
349 int wpa_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const char *label,
350 const u8 *addr1, const u8 *addr2,
351 const u8 *nonce1, const u8 *nonce2,
352 struct wpa_ptk *ptk, int akmp, int cipher,
353 const u8 *z, size_t z_len)
354 {
355 #define MAX_Z_LEN 66 /* with NIST P-521 */
356 u8 data[2 * ETH_ALEN + 2 * WPA_NONCE_LEN + MAX_Z_LEN];
357 size_t data_len = 2 * ETH_ALEN + 2 * WPA_NONCE_LEN;
358 u8 tmp[WPA_KCK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN];
359 size_t ptk_len;
360
361 if (pmk_len == 0) {
362 wpa_printf(MSG_ERROR, "WPA: No PMK set for PTK derivation");
363 return -1;
364 }
365
366 if (z_len > MAX_Z_LEN)
367 return -1;
368
369 if (os_memcmp(addr1, addr2, ETH_ALEN) < 0) {
370 os_memcpy(data, addr1, ETH_ALEN);
371 os_memcpy(data + ETH_ALEN, addr2, ETH_ALEN);
372 } else {
373 os_memcpy(data, addr2, ETH_ALEN);
374 os_memcpy(data + ETH_ALEN, addr1, ETH_ALEN);
375 }
376
377 if (os_memcmp(nonce1, nonce2, WPA_NONCE_LEN) < 0) {
378 os_memcpy(data + 2 * ETH_ALEN, nonce1, WPA_NONCE_LEN);
379 os_memcpy(data + 2 * ETH_ALEN + WPA_NONCE_LEN, nonce2,
380 WPA_NONCE_LEN);
381 } else {
382 os_memcpy(data + 2 * ETH_ALEN, nonce2, WPA_NONCE_LEN);
383 os_memcpy(data + 2 * ETH_ALEN + WPA_NONCE_LEN, nonce1,
384 WPA_NONCE_LEN);
385 }
386
387 if (z && z_len) {
388 os_memcpy(data + 2 * ETH_ALEN + 2 * WPA_NONCE_LEN, z, z_len);
389 data_len += z_len;
390 }
391
392 ptk->kck_len = wpa_kck_len(akmp, pmk_len);
393 ptk->kek_len = wpa_kek_len(akmp, pmk_len);
394 ptk->tk_len = wpa_cipher_key_len(cipher);
395 if (ptk->tk_len == 0) {
396 wpa_printf(MSG_ERROR,
397 "WPA: Unsupported cipher (0x%x) used in PTK derivation",
398 cipher);
399 return -1;
400 }
401 ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len;
402
403 if (wpa_key_mgmt_sha384(akmp)) {
404 #if defined(CONFIG_SUITEB192) || defined(CONFIG_FILS)
405 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA384)");
406 if (sha384_prf(pmk, pmk_len, label, data, data_len,
407 tmp, ptk_len) < 0)
408 return -1;
409 #else /* CONFIG_SUITEB192 || CONFIG_FILS */
410 return -1;
411 #endif /* CONFIG_SUITEB192 || CONFIG_FILS */
412 } else if (wpa_key_mgmt_sha256(akmp) || akmp == WPA_KEY_MGMT_OWE) {
413 #if defined(CONFIG_IEEE80211W) || defined(CONFIG_SAE) || defined(CONFIG_FILS)
414 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA256)");
415 if (sha256_prf(pmk, pmk_len, label, data, data_len,
416 tmp, ptk_len) < 0)
417 return -1;
418 #else /* CONFIG_IEEE80211W or CONFIG_SAE or CONFIG_FILS */
419 return -1;
420 #endif /* CONFIG_IEEE80211W or CONFIG_SAE or CONFIG_FILS */
421 #ifdef CONFIG_DPP
422 } else if (akmp == WPA_KEY_MGMT_DPP && pmk_len == 32) {
423 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA256)");
424 if (sha256_prf(pmk, pmk_len, label, data, data_len,
425 tmp, ptk_len) < 0)
426 return -1;
427 } else if (akmp == WPA_KEY_MGMT_DPP && pmk_len == 48) {
428 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA384)");
429 if (sha384_prf(pmk, pmk_len, label, data, data_len,
430 tmp, ptk_len) < 0)
431 return -1;
432 } else if (akmp == WPA_KEY_MGMT_DPP && pmk_len == 64) {
433 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA512)");
434 if (sha512_prf(pmk, pmk_len, label, data, data_len,
435 tmp, ptk_len) < 0)
436 return -1;
437 } else if (akmp == WPA_KEY_MGMT_DPP) {
438 wpa_printf(MSG_INFO, "DPP: Unknown PMK length %u",
439 (unsigned int) pmk_len);
440 return -1;
441 #endif /* CONFIG_DPP */
442 } else {
443 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA1)");
444 if (sha1_prf(pmk, pmk_len, label, data, data_len, tmp,
445 ptk_len) < 0)
446 return -1;
447 }
448
449 wpa_printf(MSG_DEBUG, "WPA: PTK derivation - A1=" MACSTR " A2=" MACSTR,
450 MAC2STR(addr1), MAC2STR(addr2));
451 wpa_hexdump(MSG_DEBUG, "WPA: Nonce1", nonce1, WPA_NONCE_LEN);
452 wpa_hexdump(MSG_DEBUG, "WPA: Nonce2", nonce2, WPA_NONCE_LEN);
453 if (z && z_len)
454 wpa_hexdump_key(MSG_DEBUG, "WPA: Z.x", z, z_len);
455 wpa_hexdump_key(MSG_DEBUG, "WPA: PMK", pmk, pmk_len);
456 wpa_hexdump_key(MSG_DEBUG, "WPA: PTK", tmp, ptk_len);
457
458 os_memcpy(ptk->kck, tmp, ptk->kck_len);
459 wpa_hexdump_key(MSG_DEBUG, "WPA: KCK", ptk->kck, ptk->kck_len);
460
461 os_memcpy(ptk->kek, tmp + ptk->kck_len, ptk->kek_len);
462 wpa_hexdump_key(MSG_DEBUG, "WPA: KEK", ptk->kek, ptk->kek_len);
463
464 os_memcpy(ptk->tk, tmp + ptk->kck_len + ptk->kek_len, ptk->tk_len);
465 wpa_hexdump_key(MSG_DEBUG, "WPA: TK", ptk->tk, ptk->tk_len);
466
467 ptk->kek2_len = 0;
468 ptk->kck2_len = 0;
469
470 os_memset(tmp, 0, sizeof(tmp));
471 os_memset(data, 0, data_len);
472 return 0;
473 }
474
475 #ifdef CONFIG_FILS
476
477 int fils_rmsk_to_pmk(int akmp, const u8 *rmsk, size_t rmsk_len,
478 const u8 *snonce, const u8 *anonce, const u8 *dh_ss,
479 size_t dh_ss_len, u8 *pmk, size_t *pmk_len)
480 {
481 u8 nonces[2 * FILS_NONCE_LEN];
482 const u8 *addr[2];
483 size_t len[2];
484 size_t num_elem;
485 int res;
486
487 /* PMK = HMAC-Hash(SNonce || ANonce, rMSK [ || DHss ]) */
488 wpa_printf(MSG_DEBUG, "FILS: rMSK to PMK derivation");
489
490 if (wpa_key_mgmt_sha384(akmp))
491 *pmk_len = SHA384_MAC_LEN;
492 else if (wpa_key_mgmt_sha256(akmp))
493 *pmk_len = SHA256_MAC_LEN;
494 else
495 return -1;
496
497 wpa_hexdump_key(MSG_DEBUG, "FILS: rMSK", rmsk, rmsk_len);
498 wpa_hexdump(MSG_DEBUG, "FILS: SNonce", snonce, FILS_NONCE_LEN);
499 wpa_hexdump(MSG_DEBUG, "FILS: ANonce", anonce, FILS_NONCE_LEN);
500 wpa_hexdump(MSG_DEBUG, "FILS: DHss", dh_ss, dh_ss_len);
501
502 os_memcpy(nonces, snonce, FILS_NONCE_LEN);
503 os_memcpy(&nonces[FILS_NONCE_LEN], anonce, FILS_NONCE_LEN);
504 addr[0] = rmsk;
505 len[0] = rmsk_len;
506 num_elem = 1;
507 if (dh_ss) {
508 addr[1] = dh_ss;
509 len[1] = dh_ss_len;
510 num_elem++;
511 }
512 if (wpa_key_mgmt_sha384(akmp))
513 res = hmac_sha384_vector(nonces, 2 * FILS_NONCE_LEN, num_elem,
514 addr, len, pmk);
515 else
516 res = hmac_sha256_vector(nonces, 2 * FILS_NONCE_LEN, num_elem,
517 addr, len, pmk);
518 if (res == 0)
519 wpa_hexdump_key(MSG_DEBUG, "FILS: PMK", pmk, *pmk_len);
520 else
521 *pmk_len = 0;
522 return res;
523 }
524
525
526 int fils_pmkid_erp(int akmp, const u8 *reauth, size_t reauth_len,
527 u8 *pmkid)
528 {
529 const u8 *addr[1];
530 size_t len[1];
531 u8 hash[SHA384_MAC_LEN];
532 int res;
533
534 /* PMKID = Truncate-128(Hash(EAP-Initiate/Reauth)) */
535 addr[0] = reauth;
536 len[0] = reauth_len;
537 if (wpa_key_mgmt_sha384(akmp))
538 res = sha384_vector(1, addr, len, hash);
539 else if (wpa_key_mgmt_sha256(akmp))
540 res = sha256_vector(1, addr, len, hash);
541 else
542 return -1;
543 if (res)
544 return res;
545 os_memcpy(pmkid, hash, PMKID_LEN);
546 wpa_hexdump(MSG_DEBUG, "FILS: PMKID", pmkid, PMKID_LEN);
547 return 0;
548 }
549
550
551 int fils_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const u8 *spa, const u8 *aa,
552 const u8 *snonce, const u8 *anonce, const u8 *dhss,
553 size_t dhss_len, struct wpa_ptk *ptk,
554 u8 *ick, size_t *ick_len, int akmp, int cipher,
555 u8 *fils_ft, size_t *fils_ft_len)
556 {
557 u8 *data, *pos;
558 size_t data_len;
559 u8 tmp[FILS_ICK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN +
560 FILS_FT_MAX_LEN];
561 size_t key_data_len;
562 const char *label = "FILS PTK Derivation";
563 int ret = -1;
564
565 /*
566 * FILS-Key-Data = PRF-X(PMK, "FILS PTK Derivation",
567 * SPA || AA || SNonce || ANonce [ || DHss ])
568 * ICK = L(FILS-Key-Data, 0, ICK_bits)
569 * KEK = L(FILS-Key-Data, ICK_bits, KEK_bits)
570 * TK = L(FILS-Key-Data, ICK_bits + KEK_bits, TK_bits)
571 * If doing FT initial mobility domain association:
572 * FILS-FT = L(FILS-Key-Data, ICK_bits + KEK_bits + TK_bits,
573 * FILS-FT_bits)
574 */
575 data_len = 2 * ETH_ALEN + 2 * FILS_NONCE_LEN + dhss_len;
576 data = os_malloc(data_len);
577 if (!data)
578 goto err;
579 pos = data;
580 os_memcpy(pos, spa, ETH_ALEN);
581 pos += ETH_ALEN;
582 os_memcpy(pos, aa, ETH_ALEN);
583 pos += ETH_ALEN;
584 os_memcpy(pos, snonce, FILS_NONCE_LEN);
585 pos += FILS_NONCE_LEN;
586 os_memcpy(pos, anonce, FILS_NONCE_LEN);
587 pos += FILS_NONCE_LEN;
588 if (dhss)
589 os_memcpy(pos, dhss, dhss_len);
590
591 ptk->kck_len = 0;
592 ptk->kek_len = wpa_kek_len(akmp, pmk_len);
593 ptk->tk_len = wpa_cipher_key_len(cipher);
594 if (wpa_key_mgmt_sha384(akmp))
595 *ick_len = 48;
596 else if (wpa_key_mgmt_sha256(akmp))
597 *ick_len = 32;
598 else
599 goto err;
600 key_data_len = *ick_len + ptk->kek_len + ptk->tk_len;
601
602 if (fils_ft && fils_ft_len) {
603 if (akmp == WPA_KEY_MGMT_FT_FILS_SHA256) {
604 *fils_ft_len = 32;
605 } else if (akmp == WPA_KEY_MGMT_FT_FILS_SHA384) {
606 *fils_ft_len = 48;
607 } else {
608 *fils_ft_len = 0;
609 fils_ft = NULL;
610 }
611 key_data_len += *fils_ft_len;
612 }
613
614 if (wpa_key_mgmt_sha384(akmp)) {
615 wpa_printf(MSG_DEBUG, "FILS: PTK derivation using PRF(SHA384)");
616 if (sha384_prf(pmk, pmk_len, label, data, data_len,
617 tmp, key_data_len) < 0)
618 goto err;
619 } else {
620 wpa_printf(MSG_DEBUG, "FILS: PTK derivation using PRF(SHA256)");
621 if (sha256_prf(pmk, pmk_len, label, data, data_len,
622 tmp, key_data_len) < 0)
623 goto err;
624 }
625
626 wpa_printf(MSG_DEBUG, "FILS: PTK derivation - SPA=" MACSTR
627 " AA=" MACSTR, MAC2STR(spa), MAC2STR(aa));
628 wpa_hexdump(MSG_DEBUG, "FILS: SNonce", snonce, FILS_NONCE_LEN);
629 wpa_hexdump(MSG_DEBUG, "FILS: ANonce", anonce, FILS_NONCE_LEN);
630 if (dhss)
631 wpa_hexdump_key(MSG_DEBUG, "FILS: DHss", dhss, dhss_len);
632 wpa_hexdump_key(MSG_DEBUG, "FILS: PMK", pmk, pmk_len);
633 wpa_hexdump_key(MSG_DEBUG, "FILS: FILS-Key-Data", tmp, key_data_len);
634
635 os_memcpy(ick, tmp, *ick_len);
636 wpa_hexdump_key(MSG_DEBUG, "FILS: ICK", ick, *ick_len);
637
638 os_memcpy(ptk->kek, tmp + *ick_len, ptk->kek_len);
639 wpa_hexdump_key(MSG_DEBUG, "FILS: KEK", ptk->kek, ptk->kek_len);
640
641 os_memcpy(ptk->tk, tmp + *ick_len + ptk->kek_len, ptk->tk_len);
642 wpa_hexdump_key(MSG_DEBUG, "FILS: TK", ptk->tk, ptk->tk_len);
643
644 if (fils_ft && fils_ft_len) {
645 os_memcpy(fils_ft, tmp + *ick_len + ptk->kek_len + ptk->tk_len,
646 *fils_ft_len);
647 wpa_hexdump_key(MSG_DEBUG, "FILS: FILS-FT",
648 fils_ft, *fils_ft_len);
649 }
650
651 ptk->kek2_len = 0;
652 ptk->kck2_len = 0;
653
654 os_memset(tmp, 0, sizeof(tmp));
655 ret = 0;
656 err:
657 bin_clear_free(data, data_len);
658 return ret;
659 }
660
661
662 int fils_key_auth_sk(const u8 *ick, size_t ick_len, const u8 *snonce,
663 const u8 *anonce, const u8 *sta_addr, const u8 *bssid,
664 const u8 *g_sta, size_t g_sta_len,
665 const u8 *g_ap, size_t g_ap_len,
666 int akmp, u8 *key_auth_sta, u8 *key_auth_ap,
667 size_t *key_auth_len)
668 {
669 const u8 *addr[6];
670 size_t len[6];
671 size_t num_elem = 4;
672 int res;
673
674 wpa_printf(MSG_DEBUG, "FILS: Key-Auth derivation: STA-MAC=" MACSTR
675 " AP-BSSID=" MACSTR, MAC2STR(sta_addr), MAC2STR(bssid));
676 wpa_hexdump_key(MSG_DEBUG, "FILS: ICK", ick, ick_len);
677 wpa_hexdump(MSG_DEBUG, "FILS: SNonce", snonce, FILS_NONCE_LEN);
678 wpa_hexdump(MSG_DEBUG, "FILS: ANonce", anonce, FILS_NONCE_LEN);
679 wpa_hexdump(MSG_DEBUG, "FILS: gSTA", g_sta, g_sta_len);
680 wpa_hexdump(MSG_DEBUG, "FILS: gAP", g_ap, g_ap_len);
681
682 /*
683 * For (Re)Association Request frame (STA->AP):
684 * Key-Auth = HMAC-Hash(ICK, SNonce || ANonce || STA-MAC || AP-BSSID
685 * [ || gSTA || gAP ])
686 */
687 addr[0] = snonce;
688 len[0] = FILS_NONCE_LEN;
689 addr[1] = anonce;
690 len[1] = FILS_NONCE_LEN;
691 addr[2] = sta_addr;
692 len[2] = ETH_ALEN;
693 addr[3] = bssid;
694 len[3] = ETH_ALEN;
695 if (g_sta && g_ap_len && g_ap && g_ap_len) {
696 addr[4] = g_sta;
697 len[4] = g_sta_len;
698 addr[5] = g_ap;
699 len[5] = g_ap_len;
700 num_elem = 6;
701 }
702
703 if (wpa_key_mgmt_sha384(akmp)) {
704 *key_auth_len = 48;
705 res = hmac_sha384_vector(ick, ick_len, num_elem, addr, len,
706 key_auth_sta);
707 } else if (wpa_key_mgmt_sha256(akmp)) {
708 *key_auth_len = 32;
709 res = hmac_sha256_vector(ick, ick_len, num_elem, addr, len,
710 key_auth_sta);
711 } else {
712 return -1;
713 }
714 if (res < 0)
715 return res;
716
717 /*
718 * For (Re)Association Response frame (AP->STA):
719 * Key-Auth = HMAC-Hash(ICK, ANonce || SNonce || AP-BSSID || STA-MAC
720 * [ || gAP || gSTA ])
721 */
722 addr[0] = anonce;
723 addr[1] = snonce;
724 addr[2] = bssid;
725 addr[3] = sta_addr;
726 if (g_sta && g_ap_len && g_ap && g_ap_len) {
727 addr[4] = g_ap;
728 len[4] = g_ap_len;
729 addr[5] = g_sta;
730 len[5] = g_sta_len;
731 }
732
733 if (wpa_key_mgmt_sha384(akmp))
734 res = hmac_sha384_vector(ick, ick_len, num_elem, addr, len,
735 key_auth_ap);
736 else if (wpa_key_mgmt_sha256(akmp))
737 res = hmac_sha256_vector(ick, ick_len, num_elem, addr, len,
738 key_auth_ap);
739 if (res < 0)
740 return res;
741
742 wpa_hexdump(MSG_DEBUG, "FILS: Key-Auth (STA)",
743 key_auth_sta, *key_auth_len);
744 wpa_hexdump(MSG_DEBUG, "FILS: Key-Auth (AP)",
745 key_auth_ap, *key_auth_len);
746
747 return 0;
748 }
749
750 #endif /* CONFIG_FILS */
751
752
753 #ifdef CONFIG_IEEE80211R
754 int wpa_ft_mic(const u8 *kck, size_t kck_len, const u8 *sta_addr,
755 const u8 *ap_addr, u8 transaction_seqnum,
756 const u8 *mdie, size_t mdie_len,
757 const u8 *ftie, size_t ftie_len,
758 const u8 *rsnie, size_t rsnie_len,
759 const u8 *ric, size_t ric_len, u8 *mic)
760 {
761 const u8 *addr[9];
762 size_t len[9];
763 size_t i, num_elem = 0;
764 u8 zero_mic[24];
765 size_t mic_len, fte_fixed_len;
766
767 if (kck_len == 16) {
768 mic_len = 16;
769 #ifdef CONFIG_SHA384
770 } else if (kck_len == 24) {
771 mic_len = 24;
772 #endif /* CONFIG_SHA384 */
773 } else {
774 wpa_printf(MSG_WARNING, "FT: Unsupported KCK length %u",
775 (unsigned int) kck_len);
776 return -1;
777 }
778
779 fte_fixed_len = sizeof(struct rsn_ftie) - 16 + mic_len;
780
781 addr[num_elem] = sta_addr;
782 len[num_elem] = ETH_ALEN;
783 num_elem++;
784
785 addr[num_elem] = ap_addr;
786 len[num_elem] = ETH_ALEN;
787 num_elem++;
788
789 addr[num_elem] = &transaction_seqnum;
790 len[num_elem] = 1;
791 num_elem++;
792
793 if (rsnie) {
794 addr[num_elem] = rsnie;
795 len[num_elem] = rsnie_len;
796 num_elem++;
797 }
798 if (mdie) {
799 addr[num_elem] = mdie;
800 len[num_elem] = mdie_len;
801 num_elem++;
802 }
803 if (ftie) {
804 if (ftie_len < 2 + fte_fixed_len)
805 return -1;
806
807 /* IE hdr and mic_control */
808 addr[num_elem] = ftie;
809 len[num_elem] = 2 + 2;
810 num_elem++;
811
812 /* MIC field with all zeros */
813 os_memset(zero_mic, 0, mic_len);
814 addr[num_elem] = zero_mic;
815 len[num_elem] = mic_len;
816 num_elem++;
817
818 /* Rest of FTIE */
819 addr[num_elem] = ftie + 2 + 2 + mic_len;
820 len[num_elem] = ftie_len - (2 + 2 + mic_len);
821 num_elem++;
822 }
823 if (ric) {
824 addr[num_elem] = ric;
825 len[num_elem] = ric_len;
826 num_elem++;
827 }
828
829 for (i = 0; i < num_elem; i++)
830 wpa_hexdump(MSG_MSGDUMP, "FT: MIC data", addr[i], len[i]);
831 #ifdef CONFIG_SHA384
832 if (kck_len == 24) {
833 u8 hash[SHA384_MAC_LEN];
834
835 if (hmac_sha384_vector(kck, kck_len, num_elem, addr, len, hash))
836 return -1;
837 os_memcpy(mic, hash, 24);
838 }
839 #endif /* CONFIG_SHA384 */
840 if (kck_len == 16 &&
841 omac1_aes_128_vector(kck, num_elem, addr, len, mic))
842 return -1;
843
844 return 0;
845 }
846
847
848 static int wpa_ft_parse_ftie(const u8 *ie, size_t ie_len,
849 struct wpa_ft_ies *parse, int use_sha384)
850 {
851 const u8 *end, *pos;
852
853 parse->ftie = ie;
854 parse->ftie_len = ie_len;
855
856 pos = ie + (use_sha384 ? sizeof(struct rsn_ftie_sha384) :
857 sizeof(struct rsn_ftie));
858 end = ie + ie_len;
859 wpa_hexdump(MSG_DEBUG, "FT: Parse FTE subelements", pos, end - pos);
860
861 while (end - pos >= 2) {
862 u8 id, len;
863
864 id = *pos++;
865 len = *pos++;
866 if (len > end - pos) {
867 wpa_printf(MSG_DEBUG, "FT: Truncated subelement");
868 break;
869 }
870
871 switch (id) {
872 case FTIE_SUBELEM_R1KH_ID:
873 if (len != FT_R1KH_ID_LEN) {
874 wpa_printf(MSG_DEBUG,
875 "FT: Invalid R1KH-ID length in FTIE: %d",
876 len);
877 return -1;
878 }
879 parse->r1kh_id = pos;
880 break;
881 case FTIE_SUBELEM_GTK:
882 parse->gtk = pos;
883 parse->gtk_len = len;
884 break;
885 case FTIE_SUBELEM_R0KH_ID:
886 if (len < 1 || len > FT_R0KH_ID_MAX_LEN) {
887 wpa_printf(MSG_DEBUG,
888 "FT: Invalid R0KH-ID length in FTIE: %d",
889 len);
890 return -1;
891 }
892 parse->r0kh_id = pos;
893 parse->r0kh_id_len = len;
894 break;
895 #ifdef CONFIG_IEEE80211W
896 case FTIE_SUBELEM_IGTK:
897 parse->igtk = pos;
898 parse->igtk_len = len;
899 break;
900 #endif /* CONFIG_IEEE80211W */
901 #ifdef CONFIG_OCV
902 case FTIE_SUBELEM_OCI:
903 parse->oci = pos;
904 parse->oci_len = len;
905 break;
906 #endif /* CONFIG_OCV */
907 default:
908 wpa_printf(MSG_DEBUG, "FT: Unknown subelem id %u", id);
909 break;
910 }
911
912 pos += len;
913 }
914
915 return 0;
916 }
917
918
919 int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
920 struct wpa_ft_ies *parse, int use_sha384)
921 {
922 const u8 *end, *pos;
923 struct wpa_ie_data data;
924 int ret;
925 const struct rsn_ftie *ftie;
926 int prot_ie_count = 0;
927 int update_use_sha384 = 0;
928
929 if (use_sha384 < 0) {
930 use_sha384 = 0;
931 update_use_sha384 = 1;
932 }
933
934 os_memset(parse, 0, sizeof(*parse));
935 if (ies == NULL)
936 return 0;
937
938 pos = ies;
939 end = ies + ies_len;
940 while (end - pos >= 2) {
941 u8 id, len;
942
943 id = *pos++;
944 len = *pos++;
945 if (len > end - pos)
946 break;
947
948 switch (id) {
949 case WLAN_EID_RSN:
950 wpa_hexdump(MSG_DEBUG, "FT: RSNE", pos, len);
951 parse->rsn = pos;
952 parse->rsn_len = len;
953 ret = wpa_parse_wpa_ie_rsn(parse->rsn - 2,
954 parse->rsn_len + 2,
955 &data);
956 if (ret < 0) {
957 wpa_printf(MSG_DEBUG, "FT: Failed to parse "
958 "RSN IE: %d", ret);
959 return -1;
960 }
961 parse->rsn_capab = data.capabilities;
962 if (data.num_pmkid == 1 && data.pmkid)
963 parse->rsn_pmkid = data.pmkid;
964 parse->key_mgmt = data.key_mgmt;
965 parse->pairwise_cipher = data.pairwise_cipher;
966 if (update_use_sha384) {
967 use_sha384 =
968 wpa_key_mgmt_sha384(parse->key_mgmt);
969 update_use_sha384 = 0;
970 }
971 break;
972 case WLAN_EID_MOBILITY_DOMAIN:
973 wpa_hexdump(MSG_DEBUG, "FT: MDE", pos, len);
974 if (len < sizeof(struct rsn_mdie))
975 return -1;
976 parse->mdie = pos;
977 parse->mdie_len = len;
978 break;
979 case WLAN_EID_FAST_BSS_TRANSITION:
980 wpa_hexdump(MSG_DEBUG, "FT: FTE", pos, len);
981 if (use_sha384) {
982 const struct rsn_ftie_sha384 *ftie_sha384;
983
984 if (len < sizeof(*ftie_sha384))
985 return -1;
986 ftie_sha384 =
987 (const struct rsn_ftie_sha384 *) pos;
988 wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC Control",
989 ftie_sha384->mic_control, 2);
990 wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC",
991 ftie_sha384->mic,
992 sizeof(ftie_sha384->mic));
993 wpa_hexdump(MSG_DEBUG, "FT: FTE-ANonce",
994 ftie_sha384->anonce,
995 WPA_NONCE_LEN);
996 wpa_hexdump(MSG_DEBUG, "FT: FTE-SNonce",
997 ftie_sha384->snonce,
998 WPA_NONCE_LEN);
999 prot_ie_count = ftie_sha384->mic_control[1];
1000 if (wpa_ft_parse_ftie(pos, len, parse, 1) < 0)
1001 return -1;
1002 break;
1003 }
1004
1005 if (len < sizeof(*ftie))
1006 return -1;
1007 ftie = (const struct rsn_ftie *) pos;
1008 wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC Control",
1009 ftie->mic_control, 2);
1010 wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC",
1011 ftie->mic, sizeof(ftie->mic));
1012 wpa_hexdump(MSG_DEBUG, "FT: FTE-ANonce",
1013 ftie->anonce, WPA_NONCE_LEN);
1014 wpa_hexdump(MSG_DEBUG, "FT: FTE-SNonce",
1015 ftie->snonce, WPA_NONCE_LEN);
1016 prot_ie_count = ftie->mic_control[1];
1017 if (wpa_ft_parse_ftie(pos, len, parse, 0) < 0)
1018 return -1;
1019 break;
1020 case WLAN_EID_TIMEOUT_INTERVAL:
1021 wpa_hexdump(MSG_DEBUG, "FT: Timeout Interval",
1022 pos, len);
1023 if (len != 5)
1024 break;
1025 parse->tie = pos;
1026 parse->tie_len = len;
1027 break;
1028 case WLAN_EID_RIC_DATA:
1029 if (parse->ric == NULL)
1030 parse->ric = pos - 2;
1031 break;
1032 }
1033
1034 pos += len;
1035 }
1036
1037 if (prot_ie_count == 0)
1038 return 0; /* no MIC */
1039
1040 /*
1041 * Check that the protected IE count matches with IEs included in the
1042 * frame.
1043 */
1044 if (parse->rsn)
1045 prot_ie_count--;
1046 if (parse->mdie)
1047 prot_ie_count--;
1048 if (parse->ftie)
1049 prot_ie_count--;
1050 if (prot_ie_count < 0) {
1051 wpa_printf(MSG_DEBUG, "FT: Some required IEs not included in "
1052 "the protected IE count");
1053 return -1;
1054 }
1055
1056 if (prot_ie_count == 0 && parse->ric) {
1057 wpa_printf(MSG_DEBUG, "FT: RIC IE(s) in the frame, but not "
1058 "included in protected IE count");
1059 return -1;
1060 }
1061
1062 /* Determine the end of the RIC IE(s) */
1063 if (parse->ric) {
1064 pos = parse->ric;
1065 while (end - pos >= 2 && 2 + pos[1] <= end - pos &&
1066 prot_ie_count) {
1067 prot_ie_count--;
1068 pos += 2 + pos[1];
1069 }
1070 parse->ric_len = pos - parse->ric;
1071 }
1072 if (prot_ie_count) {
1073 wpa_printf(MSG_DEBUG, "FT: %d protected IEs missing from "
1074 "frame", (int) prot_ie_count);
1075 return -1;
1076 }
1077
1078 return 0;
1079 }
1080 #endif /* CONFIG_IEEE80211R */
1081
1082
1083 static int rsn_selector_to_bitfield(const u8 *s)
1084 {
1085 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NONE)
1086 return WPA_CIPHER_NONE;
1087 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_TKIP)
1088 return WPA_CIPHER_TKIP;
1089 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP)
1090 return WPA_CIPHER_CCMP;
1091 #ifdef CONFIG_IEEE80211W
1092 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_AES_128_CMAC)
1093 return WPA_CIPHER_AES_128_CMAC;
1094 #endif /* CONFIG_IEEE80211W */
1095 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP)
1096 return WPA_CIPHER_GCMP;
1097 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP_256)
1098 return WPA_CIPHER_CCMP_256;
1099 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP_256)
1100 return WPA_CIPHER_GCMP_256;
1101 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_128)
1102 return WPA_CIPHER_BIP_GMAC_128;
1103 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_256)
1104 return WPA_CIPHER_BIP_GMAC_256;
1105 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_CMAC_256)
1106 return WPA_CIPHER_BIP_CMAC_256;
1107 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED)
1108 return WPA_CIPHER_GTK_NOT_USED;
1109 return 0;
1110 }
1111
1112
1113 static int rsn_key_mgmt_to_bitfield(const u8 *s)
1114 {
1115 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_UNSPEC_802_1X)
1116 return WPA_KEY_MGMT_IEEE8021X;
1117 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X)
1118 return WPA_KEY_MGMT_PSK;
1119 #ifdef CONFIG_IEEE80211R
1120 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_802_1X)
1121 return WPA_KEY_MGMT_FT_IEEE8021X;
1122 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_PSK)
1123 return WPA_KEY_MGMT_FT_PSK;
1124 #ifdef CONFIG_SHA384
1125 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_802_1X_SHA384)
1126 return WPA_KEY_MGMT_FT_IEEE8021X_SHA384;
1127 #endif /* CONFIG_SHA384 */
1128 #endif /* CONFIG_IEEE80211R */
1129 #ifdef CONFIG_IEEE80211W
1130 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SHA256)
1131 return WPA_KEY_MGMT_IEEE8021X_SHA256;
1132 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_SHA256)
1133 return WPA_KEY_MGMT_PSK_SHA256;
1134 #endif /* CONFIG_IEEE80211W */
1135 #ifdef CONFIG_SAE
1136 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_SAE)
1137 return WPA_KEY_MGMT_SAE;
1138 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_SAE)
1139 return WPA_KEY_MGMT_FT_SAE;
1140 #endif /* CONFIG_SAE */
1141 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B)
1142 return WPA_KEY_MGMT_IEEE8021X_SUITE_B;
1143 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192)
1144 return WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
1145 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FILS_SHA256)
1146 return WPA_KEY_MGMT_FILS_SHA256;
1147 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FILS_SHA384)
1148 return WPA_KEY_MGMT_FILS_SHA384;
1149 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_FILS_SHA256)
1150 return WPA_KEY_MGMT_FT_FILS_SHA256;
1151 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_FILS_SHA384)
1152 return WPA_KEY_MGMT_FT_FILS_SHA384;
1153 #ifdef CONFIG_OWE
1154 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_OWE)
1155 return WPA_KEY_MGMT_OWE;
1156 #endif /* CONFIG_OWE */
1157 #ifdef CONFIG_DPP
1158 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_DPP)
1159 return WPA_KEY_MGMT_DPP;
1160 #endif /* CONFIG_DPP */
1161 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_OSEN)
1162 return WPA_KEY_MGMT_OSEN;
1163 return 0;
1164 }
1165
1166
1167 int wpa_cipher_valid_group(int cipher)
1168 {
1169 return wpa_cipher_valid_pairwise(cipher) ||
1170 cipher == WPA_CIPHER_GTK_NOT_USED;
1171 }
1172
1173
1174 #ifdef CONFIG_IEEE80211W
1175 int wpa_cipher_valid_mgmt_group(int cipher)
1176 {
1177 return cipher == WPA_CIPHER_AES_128_CMAC ||
1178 cipher == WPA_CIPHER_BIP_GMAC_128 ||
1179 cipher == WPA_CIPHER_BIP_GMAC_256 ||
1180 cipher == WPA_CIPHER_BIP_CMAC_256;
1181 }
1182 #endif /* CONFIG_IEEE80211W */
1183
1184
1185 /**
1186 * wpa_parse_wpa_ie_rsn - Parse RSN IE
1187 * @rsn_ie: Buffer containing RSN IE
1188 * @rsn_ie_len: RSN IE buffer length (including IE number and length octets)
1189 * @data: Pointer to structure that will be filled in with parsed data
1190 * Returns: 0 on success, <0 on failure
1191 */
1192 int wpa_parse_wpa_ie_rsn(const u8 *rsn_ie, size_t rsn_ie_len,
1193 struct wpa_ie_data *data)
1194 {
1195 const u8 *pos;
1196 int left;
1197 int i, count;
1198
1199 os_memset(data, 0, sizeof(*data));
1200 data->proto = WPA_PROTO_RSN;
1201 data->pairwise_cipher = WPA_CIPHER_CCMP;
1202 data->group_cipher = WPA_CIPHER_CCMP;
1203 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
1204 data->capabilities = 0;
1205 data->pmkid = NULL;
1206 data->num_pmkid = 0;
1207 #ifdef CONFIG_IEEE80211W
1208 data->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
1209 #else /* CONFIG_IEEE80211W */
1210 data->mgmt_group_cipher = 0;
1211 #endif /* CONFIG_IEEE80211W */
1212
1213 if (rsn_ie_len == 0) {
1214 /* No RSN IE - fail silently */
1215 return -1;
1216 }
1217
1218 if (rsn_ie_len < sizeof(struct rsn_ie_hdr)) {
1219 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
1220 __func__, (unsigned long) rsn_ie_len);
1221 return -1;
1222 }
1223
1224 if (rsn_ie_len >= 6 && rsn_ie[1] >= 4 &&
1225 rsn_ie[1] == rsn_ie_len - 2 &&
1226 WPA_GET_BE32(&rsn_ie[2]) == OSEN_IE_VENDOR_TYPE) {
1227 pos = rsn_ie + 6;
1228 left = rsn_ie_len - 6;
1229
1230 data->group_cipher = WPA_CIPHER_GTK_NOT_USED;
1231 data->has_group = 1;
1232 data->key_mgmt = WPA_KEY_MGMT_OSEN;
1233 data->proto = WPA_PROTO_OSEN;
1234 } else {
1235 const struct rsn_ie_hdr *hdr;
1236
1237 hdr = (const struct rsn_ie_hdr *) rsn_ie;
1238
1239 if (hdr->elem_id != WLAN_EID_RSN ||
1240 hdr->len != rsn_ie_len - 2 ||
1241 WPA_GET_LE16(hdr->version) != RSN_VERSION) {
1242 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
1243 __func__);
1244 return -2;
1245 }
1246
1247 pos = (const u8 *) (hdr + 1);
1248 left = rsn_ie_len - sizeof(*hdr);
1249 }
1250
1251 if (left >= RSN_SELECTOR_LEN) {
1252 data->group_cipher = rsn_selector_to_bitfield(pos);
1253 data->has_group = 1;
1254 if (!wpa_cipher_valid_group(data->group_cipher)) {
1255 wpa_printf(MSG_DEBUG,
1256 "%s: invalid group cipher 0x%x (%08x)",
1257 __func__, data->group_cipher,
1258 WPA_GET_BE32(pos));
1259 return -1;
1260 }
1261 pos += RSN_SELECTOR_LEN;
1262 left -= RSN_SELECTOR_LEN;
1263 } else if (left > 0) {
1264 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
1265 __func__, left);
1266 return -3;
1267 }
1268
1269 if (left >= 2) {
1270 data->pairwise_cipher = 0;
1271 count = WPA_GET_LE16(pos);
1272 pos += 2;
1273 left -= 2;
1274 if (count == 0 || count > left / RSN_SELECTOR_LEN) {
1275 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
1276 "count %u left %u", __func__, count, left);
1277 return -4;
1278 }
1279 if (count)
1280 data->has_pairwise = 1;
1281 for (i = 0; i < count; i++) {
1282 data->pairwise_cipher |= rsn_selector_to_bitfield(pos);
1283 pos += RSN_SELECTOR_LEN;
1284 left -= RSN_SELECTOR_LEN;
1285 }
1286 #ifdef CONFIG_IEEE80211W
1287 if (data->pairwise_cipher & WPA_CIPHER_AES_128_CMAC) {
1288 wpa_printf(MSG_DEBUG, "%s: AES-128-CMAC used as "
1289 "pairwise cipher", __func__);
1290 return -1;
1291 }
1292 #endif /* CONFIG_IEEE80211W */
1293 } else if (left == 1) {
1294 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
1295 __func__);
1296 return -5;
1297 }
1298
1299 if (left >= 2) {
1300 data->key_mgmt = 0;
1301 count = WPA_GET_LE16(pos);
1302 pos += 2;
1303 left -= 2;
1304 if (count == 0 || count > left / RSN_SELECTOR_LEN) {
1305 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
1306 "count %u left %u", __func__, count, left);
1307 return -6;
1308 }
1309 for (i = 0; i < count; i++) {
1310 data->key_mgmt |= rsn_key_mgmt_to_bitfield(pos);
1311 pos += RSN_SELECTOR_LEN;
1312 left -= RSN_SELECTOR_LEN;
1313 }
1314 } else if (left == 1) {
1315 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
1316 __func__);
1317 return -7;
1318 }
1319
1320 if (left >= 2) {
1321 data->capabilities = WPA_GET_LE16(pos);
1322 pos += 2;
1323 left -= 2;
1324 }
1325
1326 if (left >= 2) {
1327 u16 num_pmkid = WPA_GET_LE16(pos);
1328 pos += 2;
1329 left -= 2;
1330 if (num_pmkid > (unsigned int) left / PMKID_LEN) {
1331 wpa_printf(MSG_DEBUG, "%s: PMKID underflow "
1332 "(num_pmkid=%u left=%d)",
1333 __func__, num_pmkid, left);
1334 data->num_pmkid = 0;
1335 return -9;
1336 } else {
1337 data->num_pmkid = num_pmkid;
1338 data->pmkid = pos;
1339 pos += data->num_pmkid * PMKID_LEN;
1340 left -= data->num_pmkid * PMKID_LEN;
1341 }
1342 }
1343
1344 #ifdef CONFIG_IEEE80211W
1345 if (left >= 4) {
1346 data->mgmt_group_cipher = rsn_selector_to_bitfield(pos);
1347 if (!wpa_cipher_valid_mgmt_group(data->mgmt_group_cipher)) {
1348 wpa_printf(MSG_DEBUG,
1349 "%s: Unsupported management group cipher 0x%x (%08x)",
1350 __func__, data->mgmt_group_cipher,
1351 WPA_GET_BE32(pos));
1352 return -10;
1353 }
1354 pos += RSN_SELECTOR_LEN;
1355 left -= RSN_SELECTOR_LEN;
1356 }
1357 #endif /* CONFIG_IEEE80211W */
1358
1359 if (left > 0) {
1360 wpa_hexdump(MSG_DEBUG,
1361 "wpa_parse_wpa_ie_rsn: ignore trailing bytes",
1362 pos, left);
1363 }
1364
1365 return 0;
1366 }
1367
1368
1369 static int wpa_selector_to_bitfield(const u8 *s)
1370 {
1371 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_NONE)
1372 return WPA_CIPHER_NONE;
1373 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_TKIP)
1374 return WPA_CIPHER_TKIP;
1375 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_CCMP)
1376 return WPA_CIPHER_CCMP;
1377 return 0;
1378 }
1379
1380
1381 static int wpa_key_mgmt_to_bitfield(const u8 *s)
1382 {
1383 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_UNSPEC_802_1X)
1384 return WPA_KEY_MGMT_IEEE8021X;
1385 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X)
1386 return WPA_KEY_MGMT_PSK;
1387 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_NONE)
1388 return WPA_KEY_MGMT_WPA_NONE;
1389 return 0;
1390 }
1391
1392
1393 int wpa_parse_wpa_ie_wpa(const u8 *wpa_ie, size_t wpa_ie_len,
1394 struct wpa_ie_data *data)
1395 {
1396 const struct wpa_ie_hdr *hdr;
1397 const u8 *pos;
1398 int left;
1399 int i, count;
1400
1401 os_memset(data, 0, sizeof(*data));
1402 data->proto = WPA_PROTO_WPA;
1403 data->pairwise_cipher = WPA_CIPHER_TKIP;
1404 data->group_cipher = WPA_CIPHER_TKIP;
1405 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
1406 data->capabilities = 0;
1407 data->pmkid = NULL;
1408 data->num_pmkid = 0;
1409 data->mgmt_group_cipher = 0;
1410
1411 if (wpa_ie_len < sizeof(struct wpa_ie_hdr)) {
1412 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
1413 __func__, (unsigned long) wpa_ie_len);
1414 return -1;
1415 }
1416
1417 hdr = (const struct wpa_ie_hdr *) wpa_ie;
1418
1419 if (hdr->elem_id != WLAN_EID_VENDOR_SPECIFIC ||
1420 hdr->len != wpa_ie_len - 2 ||
1421 RSN_SELECTOR_GET(hdr->oui) != WPA_OUI_TYPE ||
1422 WPA_GET_LE16(hdr->version) != WPA_VERSION) {
1423 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
1424 __func__);
1425 return -2;
1426 }
1427
1428 pos = (const u8 *) (hdr + 1);
1429 left = wpa_ie_len - sizeof(*hdr);
1430
1431 if (left >= WPA_SELECTOR_LEN) {
1432 data->group_cipher = wpa_selector_to_bitfield(pos);
1433 pos += WPA_SELECTOR_LEN;
1434 left -= WPA_SELECTOR_LEN;
1435 } else if (left > 0) {
1436 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
1437 __func__, left);
1438 return -3;
1439 }
1440
1441 if (left >= 2) {
1442 data->pairwise_cipher = 0;
1443 count = WPA_GET_LE16(pos);
1444 pos += 2;
1445 left -= 2;
1446 if (count == 0 || count > left / WPA_SELECTOR_LEN) {
1447 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
1448 "count %u left %u", __func__, count, left);
1449 return -4;
1450 }
1451 for (i = 0; i < count; i++) {
1452 data->pairwise_cipher |= wpa_selector_to_bitfield(pos);
1453 pos += WPA_SELECTOR_LEN;
1454 left -= WPA_SELECTOR_LEN;
1455 }
1456 } else if (left == 1) {
1457 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
1458 __func__);
1459 return -5;
1460 }
1461
1462 if (left >= 2) {
1463 data->key_mgmt = 0;
1464 count = WPA_GET_LE16(pos);
1465 pos += 2;
1466 left -= 2;
1467 if (count == 0 || count > left / WPA_SELECTOR_LEN) {
1468 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
1469 "count %u left %u", __func__, count, left);
1470 return -6;
1471 }
1472 for (i = 0; i < count; i++) {
1473 data->key_mgmt |= wpa_key_mgmt_to_bitfield(pos);
1474 pos += WPA_SELECTOR_LEN;
1475 left -= WPA_SELECTOR_LEN;
1476 }
1477 } else if (left == 1) {
1478 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
1479 __func__);
1480 return -7;
1481 }
1482
1483 if (left >= 2) {
1484 data->capabilities = WPA_GET_LE16(pos);
1485 pos += 2;
1486 left -= 2;
1487 }
1488
1489 if (left > 0) {
1490 wpa_hexdump(MSG_DEBUG,
1491 "wpa_parse_wpa_ie_wpa: ignore trailing bytes",
1492 pos, left);
1493 }
1494
1495 return 0;
1496 }
1497
1498
1499 int wpa_default_rsn_cipher(int freq)
1500 {
1501 if (freq > 56160)
1502 return WPA_CIPHER_GCMP; /* DMG */
1503
1504 return WPA_CIPHER_CCMP;
1505 }
1506
1507
1508 #ifdef CONFIG_IEEE80211R
1509
1510 /**
1511 * wpa_derive_pmk_r0 - Derive PMK-R0 and PMKR0Name
1512 *
1513 * IEEE Std 802.11r-2008 - 8.5.1.5.3
1514 */
1515 int wpa_derive_pmk_r0(const u8 *xxkey, size_t xxkey_len,
1516 const u8 *ssid, size_t ssid_len,
1517 const u8 *mdid, const u8 *r0kh_id, size_t r0kh_id_len,
1518 const u8 *s0kh_id, u8 *pmk_r0, u8 *pmk_r0_name,
1519 int use_sha384)
1520 {
1521 u8 buf[1 + SSID_MAX_LEN + MOBILITY_DOMAIN_ID_LEN + 1 +
1522 FT_R0KH_ID_MAX_LEN + ETH_ALEN];
1523 u8 *pos, r0_key_data[64], hash[48];
1524 const u8 *addr[2];
1525 size_t len[2];
1526 size_t q = use_sha384 ? 48 : 32;
1527 size_t r0_key_data_len = q + 16;
1528
1529 /*
1530 * R0-Key-Data = KDF-384(XXKey, "FT-R0",
1531 * SSIDlength || SSID || MDID || R0KHlength ||
1532 * R0KH-ID || S0KH-ID)
1533 * XXKey is either the second 256 bits of MSK or PSK; or the first
1534 * 384 bits of MSK for FT-EAP-SHA384.
1535 * PMK-R0 = L(R0-Key-Data, 0, Q)
1536 * PMK-R0Name-Salt = L(R0-Key-Data, Q, 128)
1537 * Q = 384 for FT-EAP-SHA384; otherwise, 256
1538 */
1539 if (ssid_len > SSID_MAX_LEN || r0kh_id_len > FT_R0KH_ID_MAX_LEN)
1540 return -1;
1541 wpa_printf(MSG_DEBUG, "FT: Derive PMK-R0 using KDF-%s",
1542 use_sha384 ? "SHA384" : "SHA256");
1543 wpa_hexdump_key(MSG_DEBUG, "FT: XXKey", xxkey, xxkey_len);
1544 wpa_hexdump_ascii(MSG_DEBUG, "FT: SSID", ssid, ssid_len);
1545 wpa_hexdump(MSG_DEBUG, "FT: MDID", mdid, MOBILITY_DOMAIN_ID_LEN);
1546 wpa_hexdump_ascii(MSG_DEBUG, "FT: R0KH-ID", r0kh_id, r0kh_id_len);
1547 wpa_printf(MSG_DEBUG, "FT: S0KH-ID: " MACSTR, MAC2STR(s0kh_id));
1548 pos = buf;
1549 *pos++ = ssid_len;
1550 os_memcpy(pos, ssid, ssid_len);
1551 pos += ssid_len;
1552 os_memcpy(pos, mdid, MOBILITY_DOMAIN_ID_LEN);
1553 pos += MOBILITY_DOMAIN_ID_LEN;
1554 *pos++ = r0kh_id_len;
1555 os_memcpy(pos, r0kh_id, r0kh_id_len);
1556 pos += r0kh_id_len;
1557 os_memcpy(pos, s0kh_id, ETH_ALEN);
1558 pos += ETH_ALEN;
1559
1560 #ifdef CONFIG_SHA384
1561 if (use_sha384) {
1562 if (xxkey_len != SHA384_MAC_LEN) {
1563 wpa_printf(MSG_ERROR,
1564 "FT: Unexpected XXKey length %d (expected %d)",
1565 (int) xxkey_len, SHA384_MAC_LEN);
1566 return -1;
1567 }
1568 if (sha384_prf(xxkey, xxkey_len, "FT-R0", buf, pos - buf,
1569 r0_key_data, r0_key_data_len) < 0)
1570 return -1;
1571 }
1572 #endif /* CONFIG_SHA384 */
1573 if (!use_sha384) {
1574 if (xxkey_len != PMK_LEN) {
1575 wpa_printf(MSG_ERROR,
1576 "FT: Unexpected XXKey length %d (expected %d)",
1577 (int) xxkey_len, PMK_LEN);
1578 return -1;
1579 }
1580 if (sha256_prf(xxkey, xxkey_len, "FT-R0", buf, pos - buf,
1581 r0_key_data, r0_key_data_len) < 0)
1582 return -1;
1583 }
1584 os_memcpy(pmk_r0, r0_key_data, q);
1585 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, q);
1586 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0Name-Salt", &r0_key_data[q], 16);
1587
1588 /*
1589 * PMKR0Name = Truncate-128(Hash("FT-R0N" || PMK-R0Name-Salt)
1590 */
1591 addr[0] = (const u8 *) "FT-R0N";
1592 len[0] = 6;
1593 addr[1] = &r0_key_data[q];
1594 len[1] = 16;
1595
1596 #ifdef CONFIG_SHA384
1597 if (use_sha384 && sha384_vector(2, addr, len, hash) < 0)
1598 return -1;
1599 #endif /* CONFIG_SHA384 */
1600 if (!use_sha384 && sha256_vector(2, addr, len, hash) < 0)
1601 return -1;
1602 os_memcpy(pmk_r0_name, hash, WPA_PMK_NAME_LEN);
1603 os_memset(r0_key_data, 0, sizeof(r0_key_data));
1604 return 0;
1605 }
1606
1607
1608 /**
1609 * wpa_derive_pmk_r1_name - Derive PMKR1Name
1610 *
1611 * IEEE Std 802.11r-2008 - 8.5.1.5.4
1612 */
1613 int wpa_derive_pmk_r1_name(const u8 *pmk_r0_name, const u8 *r1kh_id,
1614 const u8 *s1kh_id, u8 *pmk_r1_name, int use_sha384)
1615 {
1616 u8 hash[48];
1617 const u8 *addr[4];
1618 size_t len[4];
1619
1620 /*
1621 * PMKR1Name = Truncate-128(Hash("FT-R1N" || PMKR0Name ||
1622 * R1KH-ID || S1KH-ID))
1623 */
1624 addr[0] = (const u8 *) "FT-R1N";
1625 len[0] = 6;
1626 addr[1] = pmk_r0_name;
1627 len[1] = WPA_PMK_NAME_LEN;
1628 addr[2] = r1kh_id;
1629 len[2] = FT_R1KH_ID_LEN;
1630 addr[3] = s1kh_id;
1631 len[3] = ETH_ALEN;
1632
1633 #ifdef CONFIG_SHA384
1634 if (use_sha384 && sha384_vector(4, addr, len, hash) < 0)
1635 return -1;
1636 #endif /* CONFIG_SHA384 */
1637 if (!use_sha384 && sha256_vector(4, addr, len, hash) < 0)
1638 return -1;
1639 os_memcpy(pmk_r1_name, hash, WPA_PMK_NAME_LEN);
1640 return 0;
1641 }
1642
1643
1644 /**
1645 * wpa_derive_pmk_r1 - Derive PMK-R1 and PMKR1Name from PMK-R0
1646 *
1647 * IEEE Std 802.11r-2008 - 8.5.1.5.4
1648 */
1649 int wpa_derive_pmk_r1(const u8 *pmk_r0, size_t pmk_r0_len,
1650 const u8 *pmk_r0_name,
1651 const u8 *r1kh_id, const u8 *s1kh_id,
1652 u8 *pmk_r1, u8 *pmk_r1_name)
1653 {
1654 u8 buf[FT_R1KH_ID_LEN + ETH_ALEN];
1655 u8 *pos;
1656
1657 /* PMK-R1 = KDF-256(PMK-R0, "FT-R1", R1KH-ID || S1KH-ID) */
1658 wpa_printf(MSG_DEBUG, "FT: Derive PMK-R1 using KDF-%s",
1659 pmk_r0_len == SHA384_MAC_LEN ? "SHA384" : "SHA256");
1660 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, pmk_r0_len);
1661 wpa_hexdump(MSG_DEBUG, "FT: R1KH-ID", r1kh_id, FT_R1KH_ID_LEN);
1662 wpa_printf(MSG_DEBUG, "FT: S1KH-ID: " MACSTR, MAC2STR(s1kh_id));
1663 pos = buf;
1664 os_memcpy(pos, r1kh_id, FT_R1KH_ID_LEN);
1665 pos += FT_R1KH_ID_LEN;
1666 os_memcpy(pos, s1kh_id, ETH_ALEN);
1667 pos += ETH_ALEN;
1668
1669 #ifdef CONFIG_SHA384
1670 if (pmk_r0_len == SHA384_MAC_LEN &&
1671 sha384_prf(pmk_r0, pmk_r0_len, "FT-R1",
1672 buf, pos - buf, pmk_r1, pmk_r0_len) < 0)
1673 return -1;
1674 #endif /* CONFIG_SHA384 */
1675 if (pmk_r0_len == PMK_LEN &&
1676 sha256_prf(pmk_r0, pmk_r0_len, "FT-R1",
1677 buf, pos - buf, pmk_r1, pmk_r0_len) < 0)
1678 return -1;
1679 if (pmk_r0_len != SHA384_MAC_LEN && pmk_r0_len != PMK_LEN) {
1680 wpa_printf(MSG_ERROR, "FT: Unexpected PMK-R0 length %d",
1681 (int) pmk_r0_len);
1682 return -1;
1683 }
1684 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, pmk_r0_len);
1685
1686 return wpa_derive_pmk_r1_name(pmk_r0_name, r1kh_id, s1kh_id,
1687 pmk_r1_name,
1688 pmk_r0_len == SHA384_MAC_LEN);
1689 }
1690
1691
1692 /**
1693 * wpa_pmk_r1_to_ptk - Derive PTK and PTKName from PMK-R1
1694 *
1695 * IEEE Std 802.11r-2008 - 8.5.1.5.5
1696 */
1697 int wpa_pmk_r1_to_ptk(const u8 *pmk_r1, size_t pmk_r1_len,
1698 const u8 *snonce, const u8 *anonce,
1699 const u8 *sta_addr, const u8 *bssid,
1700 const u8 *pmk_r1_name,
1701 struct wpa_ptk *ptk, u8 *ptk_name, int akmp, int cipher)
1702 {
1703 u8 buf[2 * WPA_NONCE_LEN + 2 * ETH_ALEN];
1704 u8 *pos, hash[32];
1705 const u8 *addr[6];
1706 size_t len[6];
1707 u8 tmp[2 * WPA_KCK_MAX_LEN + 2 * WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN];
1708 size_t ptk_len, offset;
1709 int use_sha384 = wpa_key_mgmt_sha384(akmp);
1710
1711 /*
1712 * PTK = KDF-PTKLen(PMK-R1, "FT-PTK", SNonce || ANonce ||
1713 * BSSID || STA-ADDR)
1714 */
1715 wpa_printf(MSG_DEBUG, "FT: Derive PTK using KDF-%s",
1716 use_sha384 ? "SHA384" : "SHA256");
1717 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, pmk_r1_len);
1718 wpa_hexdump(MSG_DEBUG, "FT: SNonce", snonce, WPA_NONCE_LEN);
1719 wpa_hexdump(MSG_DEBUG, "FT: ANonce", anonce, WPA_NONCE_LEN);
1720 wpa_printf(MSG_DEBUG, "FT: BSSID=" MACSTR " STA-ADDR=" MACSTR,
1721 MAC2STR(bssid), MAC2STR(sta_addr));
1722 pos = buf;
1723 os_memcpy(pos, snonce, WPA_NONCE_LEN);
1724 pos += WPA_NONCE_LEN;
1725 os_memcpy(pos, anonce, WPA_NONCE_LEN);
1726 pos += WPA_NONCE_LEN;
1727 os_memcpy(pos, bssid, ETH_ALEN);
1728 pos += ETH_ALEN;
1729 os_memcpy(pos, sta_addr, ETH_ALEN);
1730 pos += ETH_ALEN;
1731
1732 ptk->kck_len = wpa_kck_len(akmp, PMK_LEN);
1733 ptk->kck2_len = wpa_kck2_len(akmp);
1734 ptk->kek_len = wpa_kek_len(akmp, PMK_LEN);
1735 ptk->kek2_len = wpa_kek2_len(akmp);
1736 ptk->tk_len = wpa_cipher_key_len(cipher);
1737 ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len +
1738 ptk->kck2_len + ptk->kek2_len;
1739
1740 #ifdef CONFIG_SHA384
1741 if (use_sha384) {
1742 if (pmk_r1_len != SHA384_MAC_LEN) {
1743 wpa_printf(MSG_ERROR,
1744 "FT: Unexpected PMK-R1 length %d (expected %d)",
1745 (int) pmk_r1_len, SHA384_MAC_LEN);
1746 return -1;
1747 }
1748 if (sha384_prf(pmk_r1, pmk_r1_len, "FT-PTK",
1749 buf, pos - buf, tmp, ptk_len) < 0)
1750 return -1;
1751 }
1752 #endif /* CONFIG_SHA384 */
1753 if (!use_sha384) {
1754 if (pmk_r1_len != PMK_LEN) {
1755 wpa_printf(MSG_ERROR,
1756 "FT: Unexpected PMK-R1 length %d (expected %d)",
1757 (int) pmk_r1_len, PMK_LEN);
1758 return -1;
1759 }
1760 if (sha256_prf(pmk_r1, pmk_r1_len, "FT-PTK",
1761 buf, pos - buf, tmp, ptk_len) < 0)
1762 return -1;
1763 }
1764 wpa_hexdump_key(MSG_DEBUG, "FT: PTK", tmp, ptk_len);
1765
1766 /*
1767 * PTKName = Truncate-128(SHA-256(PMKR1Name || "FT-PTKN" || SNonce ||
1768 * ANonce || BSSID || STA-ADDR))
1769 */
1770 wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", pmk_r1_name, WPA_PMK_NAME_LEN);
1771 addr[0] = pmk_r1_name;
1772 len[0] = WPA_PMK_NAME_LEN;
1773 addr[1] = (const u8 *) "FT-PTKN";
1774 len[1] = 7;
1775 addr[2] = snonce;
1776 len[2] = WPA_NONCE_LEN;
1777 addr[3] = anonce;
1778 len[3] = WPA_NONCE_LEN;
1779 addr[4] = bssid;
1780 len[4] = ETH_ALEN;
1781 addr[5] = sta_addr;
1782 len[5] = ETH_ALEN;
1783
1784 if (sha256_vector(6, addr, len, hash) < 0)
1785 return -1;
1786 os_memcpy(ptk_name, hash, WPA_PMK_NAME_LEN);
1787
1788 os_memcpy(ptk->kck, tmp, ptk->kck_len);
1789 offset = ptk->kck_len;
1790 os_memcpy(ptk->kek, tmp + offset, ptk->kek_len);
1791 offset += ptk->kek_len;
1792 os_memcpy(ptk->tk, tmp + offset, ptk->tk_len);
1793 offset += ptk->tk_len;
1794 os_memcpy(ptk->kck2, tmp + offset, ptk->kck2_len);
1795 offset += ptk->kck2_len;
1796 os_memcpy(ptk->kek2, tmp + offset, ptk->kek2_len);
1797
1798 wpa_hexdump_key(MSG_DEBUG, "FT: KCK", ptk->kck, ptk->kck_len);
1799 wpa_hexdump_key(MSG_DEBUG, "FT: KEK", ptk->kek, ptk->kek_len);
1800 if (ptk->kck2_len)
1801 wpa_hexdump_key(MSG_DEBUG, "FT: KCK2",
1802 ptk->kck2, ptk->kck2_len);
1803 if (ptk->kek2_len)
1804 wpa_hexdump_key(MSG_DEBUG, "FT: KEK2",
1805 ptk->kek2, ptk->kek2_len);
1806 wpa_hexdump_key(MSG_DEBUG, "FT: TK", ptk->tk, ptk->tk_len);
1807 wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN);
1808
1809 os_memset(tmp, 0, sizeof(tmp));
1810
1811 return 0;
1812 }
1813
1814 #endif /* CONFIG_IEEE80211R */
1815
1816
1817 /**
1818 * rsn_pmkid - Calculate PMK identifier
1819 * @pmk: Pairwise master key
1820 * @pmk_len: Length of pmk in bytes
1821 * @aa: Authenticator address
1822 * @spa: Supplicant address
1823 * @pmkid: Buffer for PMKID
1824 * @akmp: Negotiated key management protocol
1825 *
1826 * IEEE Std 802.11-2016 - 12.7.1.3 Pairwise key hierarchy
1827 * AKM: 00-0F-AC:5, 00-0F-AC:6, 00-0F-AC:14, 00-0F-AC:16
1828 * PMKID = Truncate-128(HMAC-SHA-256(PMK, "PMK Name" || AA || SPA))
1829 * AKM: 00-0F-AC:11
1830 * See rsn_pmkid_suite_b()
1831 * AKM: 00-0F-AC:12
1832 * See rsn_pmkid_suite_b_192()
1833 * AKM: 00-0F-AC:13, 00-0F-AC:15, 00-0F-AC:17
1834 * PMKID = Truncate-128(HMAC-SHA-384(PMK, "PMK Name" || AA || SPA))
1835 * Otherwise:
1836 * PMKID = Truncate-128(HMAC-SHA-1(PMK, "PMK Name" || AA || SPA))
1837 */
1838 void rsn_pmkid(const u8 *pmk, size_t pmk_len, const u8 *aa, const u8 *spa,
1839 u8 *pmkid, int akmp)
1840 {
1841 char *title = "PMK Name";
1842 const u8 *addr[3];
1843 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1844 unsigned char hash[SHA384_MAC_LEN];
1845
1846 addr[0] = (u8 *) title;
1847 addr[1] = aa;
1848 addr[2] = spa;
1849
1850 if (0) {
1851 #if defined(CONFIG_FILS) || defined(CONFIG_SHA384)
1852 } else if (wpa_key_mgmt_sha384(akmp)) {
1853 wpa_printf(MSG_DEBUG, "RSN: Derive PMKID using HMAC-SHA-384");
1854 hmac_sha384_vector(pmk, pmk_len, 3, addr, len, hash);
1855 #endif /* CONFIG_FILS || CONFIG_SHA384 */
1856 #if defined(CONFIG_IEEE80211W) || defined(CONFIG_FILS)
1857 } else if (wpa_key_mgmt_sha256(akmp)) {
1858 wpa_printf(MSG_DEBUG, "RSN: Derive PMKID using HMAC-SHA-256");
1859 hmac_sha256_vector(pmk, pmk_len, 3, addr, len, hash);
1860 #endif /* CONFIG_IEEE80211W || CONFIG_FILS */
1861 } else {
1862 wpa_printf(MSG_DEBUG, "RSN: Derive PMKID using HMAC-SHA-1");
1863 hmac_sha1_vector(pmk, pmk_len, 3, addr, len, hash);
1864 }
1865 wpa_hexdump(MSG_DEBUG, "RSN: Derived PMKID", hash, PMKID_LEN);
1866 os_memcpy(pmkid, hash, PMKID_LEN);
1867 }
1868
1869
1870 #ifdef CONFIG_SUITEB
1871 /**
1872 * rsn_pmkid_suite_b - Calculate PMK identifier for Suite B AKM
1873 * @kck: Key confirmation key
1874 * @kck_len: Length of kck in bytes
1875 * @aa: Authenticator address
1876 * @spa: Supplicant address
1877 * @pmkid: Buffer for PMKID
1878 * Returns: 0 on success, -1 on failure
1879 *
1880 * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
1881 * PMKID = Truncate(HMAC-SHA-256(KCK, "PMK Name" || AA || SPA))
1882 */
1883 int rsn_pmkid_suite_b(const u8 *kck, size_t kck_len, const u8 *aa,
1884 const u8 *spa, u8 *pmkid)
1885 {
1886 char *title = "PMK Name";
1887 const u8 *addr[3];
1888 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1889 unsigned char hash[SHA256_MAC_LEN];
1890
1891 addr[0] = (u8 *) title;
1892 addr[1] = aa;
1893 addr[2] = spa;
1894
1895 if (hmac_sha256_vector(kck, kck_len, 3, addr, len, hash) < 0)
1896 return -1;
1897 os_memcpy(pmkid, hash, PMKID_LEN);
1898 return 0;
1899 }
1900 #endif /* CONFIG_SUITEB */
1901
1902
1903 #ifdef CONFIG_SUITEB192
1904 /**
1905 * rsn_pmkid_suite_b_192 - Calculate PMK identifier for Suite B AKM
1906 * @kck: Key confirmation key
1907 * @kck_len: Length of kck in bytes
1908 * @aa: Authenticator address
1909 * @spa: Supplicant address
1910 * @pmkid: Buffer for PMKID
1911 * Returns: 0 on success, -1 on failure
1912 *
1913 * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
1914 * PMKID = Truncate(HMAC-SHA-384(KCK, "PMK Name" || AA || SPA))
1915 */
1916 int rsn_pmkid_suite_b_192(const u8 *kck, size_t kck_len, const u8 *aa,
1917 const u8 *spa, u8 *pmkid)
1918 {
1919 char *title = "PMK Name";
1920 const u8 *addr[3];
1921 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
1922 unsigned char hash[SHA384_MAC_LEN];
1923
1924 addr[0] = (u8 *) title;
1925 addr[1] = aa;
1926 addr[2] = spa;
1927
1928 if (hmac_sha384_vector(kck, kck_len, 3, addr, len, hash) < 0)
1929 return -1;
1930 os_memcpy(pmkid, hash, PMKID_LEN);
1931 return 0;
1932 }
1933 #endif /* CONFIG_SUITEB192 */
1934
1935
1936 /**
1937 * wpa_cipher_txt - Convert cipher suite to a text string
1938 * @cipher: Cipher suite (WPA_CIPHER_* enum)
1939 * Returns: Pointer to a text string of the cipher suite name
1940 */
1941 const char * wpa_cipher_txt(int cipher)
1942 {
1943 switch (cipher) {
1944 case WPA_CIPHER_NONE:
1945 return "NONE";
1946 case WPA_CIPHER_WEP40:
1947 return "WEP-40";
1948 case WPA_CIPHER_WEP104:
1949 return "WEP-104";
1950 case WPA_CIPHER_TKIP:
1951 return "TKIP";
1952 case WPA_CIPHER_CCMP:
1953 return "CCMP";
1954 case WPA_CIPHER_CCMP | WPA_CIPHER_TKIP:
1955 return "CCMP+TKIP";
1956 case WPA_CIPHER_GCMP:
1957 return "GCMP";
1958 case WPA_CIPHER_GCMP_256:
1959 return "GCMP-256";
1960 case WPA_CIPHER_CCMP_256:
1961 return "CCMP-256";
1962 case WPA_CIPHER_AES_128_CMAC:
1963 return "BIP";
1964 case WPA_CIPHER_BIP_GMAC_128:
1965 return "BIP-GMAC-128";
1966 case WPA_CIPHER_BIP_GMAC_256:
1967 return "BIP-GMAC-256";
1968 case WPA_CIPHER_BIP_CMAC_256:
1969 return "BIP-CMAC-256";
1970 case WPA_CIPHER_GTK_NOT_USED:
1971 return "GTK_NOT_USED";
1972 default:
1973 return "UNKNOWN";
1974 }
1975 }
1976
1977
1978 /**
1979 * wpa_key_mgmt_txt - Convert key management suite to a text string
1980 * @key_mgmt: Key management suite (WPA_KEY_MGMT_* enum)
1981 * @proto: WPA/WPA2 version (WPA_PROTO_*)
1982 * Returns: Pointer to a text string of the key management suite name
1983 */
1984 const char * wpa_key_mgmt_txt(int key_mgmt, int proto)
1985 {
1986 switch (key_mgmt) {
1987 case WPA_KEY_MGMT_IEEE8021X:
1988 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
1989 return "WPA2+WPA/IEEE 802.1X/EAP";
1990 return proto == WPA_PROTO_RSN ?
1991 "WPA2/IEEE 802.1X/EAP" : "WPA/IEEE 802.1X/EAP";
1992 case WPA_KEY_MGMT_PSK:
1993 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
1994 return "WPA2-PSK+WPA-PSK";
1995 return proto == WPA_PROTO_RSN ?
1996 "WPA2-PSK" : "WPA-PSK";
1997 case WPA_KEY_MGMT_NONE:
1998 return "NONE";
1999 case WPA_KEY_MGMT_WPA_NONE:
2000 return "WPA-NONE";
2001 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
2002 return "IEEE 802.1X (no WPA)";
2003 #ifdef CONFIG_IEEE80211R
2004 case WPA_KEY_MGMT_FT_IEEE8021X:
2005 return "FT-EAP";
2006 case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
2007 return "FT-EAP-SHA384";
2008 case WPA_KEY_MGMT_FT_PSK:
2009 return "FT-PSK";
2010 #endif /* CONFIG_IEEE80211R */
2011 #ifdef CONFIG_IEEE80211W
2012 case WPA_KEY_MGMT_IEEE8021X_SHA256:
2013 return "WPA2-EAP-SHA256";
2014 case WPA_KEY_MGMT_PSK_SHA256:
2015 return "WPA2-PSK-SHA256";
2016 #endif /* CONFIG_IEEE80211W */
2017 case WPA_KEY_MGMT_WPS:
2018 return "WPS";
2019 case WPA_KEY_MGMT_SAE:
2020 return "SAE";
2021 case WPA_KEY_MGMT_FT_SAE:
2022 return "FT-SAE";
2023 case WPA_KEY_MGMT_OSEN:
2024 return "OSEN";
2025 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
2026 return "WPA2-EAP-SUITE-B";
2027 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
2028 return "WPA2-EAP-SUITE-B-192";
2029 case WPA_KEY_MGMT_FILS_SHA256:
2030 return "FILS-SHA256";
2031 case WPA_KEY_MGMT_FILS_SHA384:
2032 return "FILS-SHA384";
2033 case WPA_KEY_MGMT_FT_FILS_SHA256:
2034 return "FT-FILS-SHA256";
2035 case WPA_KEY_MGMT_FT_FILS_SHA384:
2036 return "FT-FILS-SHA384";
2037 case WPA_KEY_MGMT_OWE:
2038 return "OWE";
2039 case WPA_KEY_MGMT_DPP:
2040 return "DPP";
2041 default:
2042 return "UNKNOWN";
2043 }
2044 }
2045
2046
2047 u32 wpa_akm_to_suite(int akm)
2048 {
2049 if (akm & WPA_KEY_MGMT_FT_IEEE8021X_SHA384)
2050 return RSN_AUTH_KEY_MGMT_FT_802_1X_SHA384;
2051 if (akm & WPA_KEY_MGMT_FT_IEEE8021X)
2052 return RSN_AUTH_KEY_MGMT_FT_802_1X;
2053 if (akm & WPA_KEY_MGMT_FT_PSK)
2054 return RSN_AUTH_KEY_MGMT_FT_PSK;
2055 if (akm & WPA_KEY_MGMT_IEEE8021X_SHA256)
2056 return RSN_AUTH_KEY_MGMT_802_1X_SHA256;
2057 if (akm & WPA_KEY_MGMT_IEEE8021X)
2058 return RSN_AUTH_KEY_MGMT_UNSPEC_802_1X;
2059 if (akm & WPA_KEY_MGMT_PSK_SHA256)
2060 return RSN_AUTH_KEY_MGMT_PSK_SHA256;
2061 if (akm & WPA_KEY_MGMT_PSK)
2062 return RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X;
2063 if (akm & WPA_KEY_MGMT_CCKM)
2064 return RSN_AUTH_KEY_MGMT_CCKM;
2065 if (akm & WPA_KEY_MGMT_OSEN)
2066 return RSN_AUTH_KEY_MGMT_OSEN;
2067 if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B)
2068 return RSN_AUTH_KEY_MGMT_802_1X_SUITE_B;
2069 if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
2070 return RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192;
2071 if (akm & WPA_KEY_MGMT_FILS_SHA256)
2072 return RSN_AUTH_KEY_MGMT_FILS_SHA256;
2073 if (akm & WPA_KEY_MGMT_FILS_SHA384)
2074 return RSN_AUTH_KEY_MGMT_FILS_SHA384;
2075 if (akm & WPA_KEY_MGMT_FT_FILS_SHA256)
2076 return RSN_AUTH_KEY_MGMT_FT_FILS_SHA256;
2077 if (akm & WPA_KEY_MGMT_FT_FILS_SHA384)
2078 return RSN_AUTH_KEY_MGMT_FT_FILS_SHA384;
2079 if (akm & WPA_KEY_MGMT_SAE)
2080 return RSN_AUTH_KEY_MGMT_SAE;
2081 if (akm & WPA_KEY_MGMT_FT_SAE)
2082 return RSN_AUTH_KEY_MGMT_FT_SAE;
2083 if (akm & WPA_KEY_MGMT_OWE)
2084 return RSN_AUTH_KEY_MGMT_OWE;
2085 if (akm & WPA_KEY_MGMT_DPP)
2086 return RSN_AUTH_KEY_MGMT_DPP;
2087 if (akm & WPA_KEY_MGMT_OSEN)
2088 return RSN_AUTH_KEY_MGMT_OSEN;
2089 return 0;
2090 }
2091
2092
2093 int wpa_compare_rsn_ie(int ft_initial_assoc,
2094 const u8 *ie1, size_t ie1len,
2095 const u8 *ie2, size_t ie2len)
2096 {
2097 if (ie1 == NULL || ie2 == NULL)
2098 return -1;
2099
2100 if (ie1len == ie2len && os_memcmp(ie1, ie2, ie1len) == 0)
2101 return 0; /* identical IEs */
2102
2103 #ifdef CONFIG_IEEE80211R
2104 if (ft_initial_assoc) {
2105 struct wpa_ie_data ie1d, ie2d;
2106 /*
2107 * The PMKID-List in RSN IE is different between Beacon/Probe
2108 * Response/(Re)Association Request frames and EAPOL-Key
2109 * messages in FT initial mobility domain association. Allow
2110 * for this, but verify that other parts of the RSN IEs are
2111 * identical.
2112 */
2113 if (wpa_parse_wpa_ie_rsn(ie1, ie1len, &ie1d) < 0 ||
2114 wpa_parse_wpa_ie_rsn(ie2, ie2len, &ie2d) < 0)
2115 return -1;
2116 if (ie1d.proto == ie2d.proto &&
2117 ie1d.pairwise_cipher == ie2d.pairwise_cipher &&
2118 ie1d.group_cipher == ie2d.group_cipher &&
2119 ie1d.key_mgmt == ie2d.key_mgmt &&
2120 ie1d.capabilities == ie2d.capabilities &&
2121 ie1d.mgmt_group_cipher == ie2d.mgmt_group_cipher)
2122 return 0;
2123 }
2124 #endif /* CONFIG_IEEE80211R */
2125
2126 return -1;
2127 }
2128
2129
2130 int wpa_insert_pmkid(u8 *ies, size_t *ies_len, const u8 *pmkid)
2131 {
2132 u8 *start, *end, *rpos, *rend;
2133 int added = 0;
2134
2135 start = ies;
2136 end = ies + *ies_len;
2137
2138 while (start < end) {
2139 if (*start == WLAN_EID_RSN)
2140 break;
2141 start += 2 + start[1];
2142 }
2143 if (start >= end) {
2144 wpa_printf(MSG_ERROR, "RSN: Could not find RSNE in IEs data");
2145 return -1;
2146 }
2147 wpa_hexdump(MSG_DEBUG, "RSN: RSNE before modification",
2148 start, 2 + start[1]);
2149
2150 /* Find start of PMKID-Count */
2151 rpos = start + 2;
2152 rend = rpos + start[1];
2153
2154 /* Skip Version and Group Data Cipher Suite */
2155 rpos += 2 + 4;
2156 /* Skip Pairwise Cipher Suite Count and List */
2157 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
2158 /* Skip AKM Suite Count and List */
2159 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
2160
2161 if (rpos == rend) {
2162 /* Add RSN Capabilities */
2163 os_memmove(rpos + 2, rpos, end - rpos);
2164 *rpos++ = 0;
2165 *rpos++ = 0;
2166 added += 2;
2167 start[1] += 2;
2168 rend = rpos;
2169 } else {
2170 /* Skip RSN Capabilities */
2171 rpos += 2;
2172 if (rpos > rend) {
2173 wpa_printf(MSG_ERROR,
2174 "RSN: Could not parse RSNE in IEs data");
2175 return -1;
2176 }
2177 }
2178
2179 if (rpos == rend) {
2180 /* No PMKID-Count field included; add it */
2181 os_memmove(rpos + 2 + PMKID_LEN, rpos, end + added - rpos);
2182 WPA_PUT_LE16(rpos, 1);
2183 rpos += 2;
2184 os_memcpy(rpos, pmkid, PMKID_LEN);
2185 added += 2 + PMKID_LEN;
2186 start[1] += 2 + PMKID_LEN;
2187 } else {
2188 u16 num_pmkid;
2189
2190 if (rend - rpos < 2)
2191 return -1;
2192 num_pmkid = WPA_GET_LE16(rpos);
2193 /* PMKID-Count was included; use it */
2194 if (num_pmkid != 0) {
2195 u8 *after;
2196
2197 if (num_pmkid * PMKID_LEN > rend - rpos - 2)
2198 return -1;
2199 /*
2200 * PMKID may have been included in RSN IE in
2201 * (Re)Association Request frame, so remove the old
2202 * PMKID(s) first before adding the new one.
2203 */
2204 wpa_printf(MSG_DEBUG,
2205 "RSN: Remove %u old PMKID(s) from RSNE",
2206 num_pmkid);
2207 after = rpos + 2 + num_pmkid * PMKID_LEN;
2208 os_memmove(rpos + 2, after, rend - after);
2209 start[1] -= num_pmkid * PMKID_LEN;
2210 added -= num_pmkid * PMKID_LEN;
2211 }
2212 WPA_PUT_LE16(rpos, 1);
2213 rpos += 2;
2214 os_memmove(rpos + PMKID_LEN, rpos, end + added - rpos);
2215 os_memcpy(rpos, pmkid, PMKID_LEN);
2216 added += PMKID_LEN;
2217 start[1] += PMKID_LEN;
2218 }
2219
2220 wpa_hexdump(MSG_DEBUG, "RSN: RSNE after modification (PMKID inserted)",
2221 start, 2 + start[1]);
2222
2223 *ies_len += added;
2224
2225 return 0;
2226 }
2227
2228
2229 int wpa_cipher_key_len(int cipher)
2230 {
2231 switch (cipher) {
2232 case WPA_CIPHER_CCMP_256:
2233 case WPA_CIPHER_GCMP_256:
2234 case WPA_CIPHER_BIP_GMAC_256:
2235 case WPA_CIPHER_BIP_CMAC_256:
2236 return 32;
2237 case WPA_CIPHER_CCMP:
2238 case WPA_CIPHER_GCMP:
2239 case WPA_CIPHER_AES_128_CMAC:
2240 case WPA_CIPHER_BIP_GMAC_128:
2241 return 16;
2242 case WPA_CIPHER_TKIP:
2243 return 32;
2244 }
2245
2246 return 0;
2247 }
2248
2249
2250 int wpa_cipher_rsc_len(int cipher)
2251 {
2252 switch (cipher) {
2253 case WPA_CIPHER_CCMP_256:
2254 case WPA_CIPHER_GCMP_256:
2255 case WPA_CIPHER_CCMP:
2256 case WPA_CIPHER_GCMP:
2257 case WPA_CIPHER_TKIP:
2258 return 6;
2259 }
2260
2261 return 0;
2262 }
2263
2264
2265 enum wpa_alg wpa_cipher_to_alg(int cipher)
2266 {
2267 switch (cipher) {
2268 case WPA_CIPHER_CCMP_256:
2269 return WPA_ALG_CCMP_256;
2270 case WPA_CIPHER_GCMP_256:
2271 return WPA_ALG_GCMP_256;
2272 case WPA_CIPHER_CCMP:
2273 return WPA_ALG_CCMP;
2274 case WPA_CIPHER_GCMP:
2275 return WPA_ALG_GCMP;
2276 case WPA_CIPHER_TKIP:
2277 return WPA_ALG_TKIP;
2278 case WPA_CIPHER_AES_128_CMAC:
2279 return WPA_ALG_IGTK;
2280 case WPA_CIPHER_BIP_GMAC_128:
2281 return WPA_ALG_BIP_GMAC_128;
2282 case WPA_CIPHER_BIP_GMAC_256:
2283 return WPA_ALG_BIP_GMAC_256;
2284 case WPA_CIPHER_BIP_CMAC_256:
2285 return WPA_ALG_BIP_CMAC_256;
2286 }
2287 return WPA_ALG_NONE;
2288 }
2289
2290
2291 int wpa_cipher_valid_pairwise(int cipher)
2292 {
2293 return cipher == WPA_CIPHER_CCMP_256 ||
2294 cipher == WPA_CIPHER_GCMP_256 ||
2295 cipher == WPA_CIPHER_CCMP ||
2296 cipher == WPA_CIPHER_GCMP ||
2297 cipher == WPA_CIPHER_TKIP;
2298 }
2299
2300
2301 u32 wpa_cipher_to_suite(int proto, int cipher)
2302 {
2303 if (cipher & WPA_CIPHER_CCMP_256)
2304 return RSN_CIPHER_SUITE_CCMP_256;
2305 if (cipher & WPA_CIPHER_GCMP_256)
2306 return RSN_CIPHER_SUITE_GCMP_256;
2307 if (cipher & WPA_CIPHER_CCMP)
2308 return (proto == WPA_PROTO_RSN ?
2309 RSN_CIPHER_SUITE_CCMP : WPA_CIPHER_SUITE_CCMP);
2310 if (cipher & WPA_CIPHER_GCMP)
2311 return RSN_CIPHER_SUITE_GCMP;
2312 if (cipher & WPA_CIPHER_TKIP)
2313 return (proto == WPA_PROTO_RSN ?
2314 RSN_CIPHER_SUITE_TKIP : WPA_CIPHER_SUITE_TKIP);
2315 if (cipher & WPA_CIPHER_NONE)
2316 return (proto == WPA_PROTO_RSN ?
2317 RSN_CIPHER_SUITE_NONE : WPA_CIPHER_SUITE_NONE);
2318 if (cipher & WPA_CIPHER_GTK_NOT_USED)
2319 return RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED;
2320 if (cipher & WPA_CIPHER_AES_128_CMAC)
2321 return RSN_CIPHER_SUITE_AES_128_CMAC;
2322 if (cipher & WPA_CIPHER_BIP_GMAC_128)
2323 return RSN_CIPHER_SUITE_BIP_GMAC_128;
2324 if (cipher & WPA_CIPHER_BIP_GMAC_256)
2325 return RSN_CIPHER_SUITE_BIP_GMAC_256;
2326 if (cipher & WPA_CIPHER_BIP_CMAC_256)
2327 return RSN_CIPHER_SUITE_BIP_CMAC_256;
2328 return 0;
2329 }
2330
2331
2332 int rsn_cipher_put_suites(u8 *start, int ciphers)
2333 {
2334 u8 *pos = start;
2335
2336 if (ciphers & WPA_CIPHER_CCMP_256) {
2337 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP_256);
2338 pos += RSN_SELECTOR_LEN;
2339 }
2340 if (ciphers & WPA_CIPHER_GCMP_256) {
2341 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP_256);
2342 pos += RSN_SELECTOR_LEN;
2343 }
2344 if (ciphers & WPA_CIPHER_CCMP) {
2345 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP);
2346 pos += RSN_SELECTOR_LEN;
2347 }
2348 if (ciphers & WPA_CIPHER_GCMP) {
2349 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP);
2350 pos += RSN_SELECTOR_LEN;
2351 }
2352 if (ciphers & WPA_CIPHER_TKIP) {
2353 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_TKIP);
2354 pos += RSN_SELECTOR_LEN;
2355 }
2356 if (ciphers & WPA_CIPHER_NONE) {
2357 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NONE);
2358 pos += RSN_SELECTOR_LEN;
2359 }
2360
2361 return (pos - start) / RSN_SELECTOR_LEN;
2362 }
2363
2364
2365 int wpa_cipher_put_suites(u8 *start, int ciphers)
2366 {
2367 u8 *pos = start;
2368
2369 if (ciphers & WPA_CIPHER_CCMP) {
2370 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_CCMP);
2371 pos += WPA_SELECTOR_LEN;
2372 }
2373 if (ciphers & WPA_CIPHER_TKIP) {
2374 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_TKIP);
2375 pos += WPA_SELECTOR_LEN;
2376 }
2377 if (ciphers & WPA_CIPHER_NONE) {
2378 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_NONE);
2379 pos += WPA_SELECTOR_LEN;
2380 }
2381
2382 return (pos - start) / RSN_SELECTOR_LEN;
2383 }
2384
2385
2386 int wpa_pick_pairwise_cipher(int ciphers, int none_allowed)
2387 {
2388 if (ciphers & WPA_CIPHER_CCMP_256)
2389 return WPA_CIPHER_CCMP_256;
2390 if (ciphers & WPA_CIPHER_GCMP_256)
2391 return WPA_CIPHER_GCMP_256;
2392 if (ciphers & WPA_CIPHER_CCMP)
2393 return WPA_CIPHER_CCMP;
2394 if (ciphers & WPA_CIPHER_GCMP)
2395 return WPA_CIPHER_GCMP;
2396 if (ciphers & WPA_CIPHER_TKIP)
2397 return WPA_CIPHER_TKIP;
2398 if (none_allowed && (ciphers & WPA_CIPHER_NONE))
2399 return WPA_CIPHER_NONE;
2400 return -1;
2401 }
2402
2403
2404 int wpa_pick_group_cipher(int ciphers)
2405 {
2406 if (ciphers & WPA_CIPHER_CCMP_256)
2407 return WPA_CIPHER_CCMP_256;
2408 if (ciphers & WPA_CIPHER_GCMP_256)
2409 return WPA_CIPHER_GCMP_256;
2410 if (ciphers & WPA_CIPHER_CCMP)
2411 return WPA_CIPHER_CCMP;
2412 if (ciphers & WPA_CIPHER_GCMP)
2413 return WPA_CIPHER_GCMP;
2414 if (ciphers & WPA_CIPHER_GTK_NOT_USED)
2415 return WPA_CIPHER_GTK_NOT_USED;
2416 if (ciphers & WPA_CIPHER_TKIP)
2417 return WPA_CIPHER_TKIP;
2418 return -1;
2419 }
2420
2421
2422 int wpa_parse_cipher(const char *value)
2423 {
2424 int val = 0, last;
2425 char *start, *end, *buf;
2426
2427 buf = os_strdup(value);
2428 if (buf == NULL)
2429 return -1;
2430 start = buf;
2431
2432 while (*start != '\0') {
2433 while (*start == ' ' || *start == '\t')
2434 start++;
2435 if (*start == '\0')
2436 break;
2437 end = start;
2438 while (*end != ' ' && *end != '\t' && *end != '\0')
2439 end++;
2440 last = *end == '\0';
2441 *end = '\0';
2442 if (os_strcmp(start, "CCMP-256") == 0)
2443 val |= WPA_CIPHER_CCMP_256;
2444 else if (os_strcmp(start, "GCMP-256") == 0)
2445 val |= WPA_CIPHER_GCMP_256;
2446 else if (os_strcmp(start, "CCMP") == 0)
2447 val |= WPA_CIPHER_CCMP;
2448 else if (os_strcmp(start, "GCMP") == 0)
2449 val |= WPA_CIPHER_GCMP;
2450 else if (os_strcmp(start, "TKIP") == 0)
2451 val |= WPA_CIPHER_TKIP;
2452 else if (os_strcmp(start, "WEP104") == 0)
2453 val |= WPA_CIPHER_WEP104;
2454 else if (os_strcmp(start, "WEP40") == 0)
2455 val |= WPA_CIPHER_WEP40;
2456 else if (os_strcmp(start, "NONE") == 0)
2457 val |= WPA_CIPHER_NONE;
2458 else if (os_strcmp(start, "GTK_NOT_USED") == 0)
2459 val |= WPA_CIPHER_GTK_NOT_USED;
2460 else if (os_strcmp(start, "AES-128-CMAC") == 0)
2461 val |= WPA_CIPHER_AES_128_CMAC;
2462 else if (os_strcmp(start, "BIP-GMAC-128") == 0)
2463 val |= WPA_CIPHER_BIP_GMAC_128;
2464 else if (os_strcmp(start, "BIP-GMAC-256") == 0)
2465 val |= WPA_CIPHER_BIP_GMAC_256;
2466 else if (os_strcmp(start, "BIP-CMAC-256") == 0)
2467 val |= WPA_CIPHER_BIP_CMAC_256;
2468 else {
2469 os_free(buf);
2470 return -1;
2471 }
2472
2473 if (last)
2474 break;
2475 start = end + 1;
2476 }
2477 os_free(buf);
2478
2479 return val;
2480 }
2481
2482
2483 int wpa_write_ciphers(char *start, char *end, int ciphers, const char *delim)
2484 {
2485 char *pos = start;
2486 int ret;
2487
2488 if (ciphers & WPA_CIPHER_CCMP_256) {
2489 ret = os_snprintf(pos, end - pos, "%sCCMP-256",
2490 pos == start ? "" : delim);
2491 if (os_snprintf_error(end - pos, ret))
2492 return -1;
2493 pos += ret;
2494 }
2495 if (ciphers & WPA_CIPHER_GCMP_256) {
2496 ret = os_snprintf(pos, end - pos, "%sGCMP-256",
2497 pos == start ? "" : delim);
2498 if (os_snprintf_error(end - pos, ret))
2499 return -1;
2500 pos += ret;
2501 }
2502 if (ciphers & WPA_CIPHER_CCMP) {
2503 ret = os_snprintf(pos, end - pos, "%sCCMP",
2504 pos == start ? "" : delim);
2505 if (os_snprintf_error(end - pos, ret))
2506 return -1;
2507 pos += ret;
2508 }
2509 if (ciphers & WPA_CIPHER_GCMP) {
2510 ret = os_snprintf(pos, end - pos, "%sGCMP",
2511 pos == start ? "" : delim);
2512 if (os_snprintf_error(end - pos, ret))
2513 return -1;
2514 pos += ret;
2515 }
2516 if (ciphers & WPA_CIPHER_TKIP) {
2517 ret = os_snprintf(pos, end - pos, "%sTKIP",
2518 pos == start ? "" : delim);
2519 if (os_snprintf_error(end - pos, ret))
2520 return -1;
2521 pos += ret;
2522 }
2523 if (ciphers & WPA_CIPHER_AES_128_CMAC) {
2524 ret = os_snprintf(pos, end - pos, "%sAES-128-CMAC",
2525 pos == start ? "" : delim);
2526 if (os_snprintf_error(end - pos, ret))
2527 return -1;
2528 pos += ret;
2529 }
2530 if (ciphers & WPA_CIPHER_BIP_GMAC_128) {
2531 ret = os_snprintf(pos, end - pos, "%sBIP-GMAC-128",
2532 pos == start ? "" : delim);
2533 if (os_snprintf_error(end - pos, ret))
2534 return -1;
2535 pos += ret;
2536 }
2537 if (ciphers & WPA_CIPHER_BIP_GMAC_256) {
2538 ret = os_snprintf(pos, end - pos, "%sBIP-GMAC-256",
2539 pos == start ? "" : delim);
2540 if (os_snprintf_error(end - pos, ret))
2541 return -1;
2542 pos += ret;
2543 }
2544 if (ciphers & WPA_CIPHER_BIP_CMAC_256) {
2545 ret = os_snprintf(pos, end - pos, "%sBIP-CMAC-256",
2546 pos == start ? "" : delim);
2547 if (os_snprintf_error(end - pos, ret))
2548 return -1;
2549 pos += ret;
2550 }
2551 if (ciphers & WPA_CIPHER_NONE) {
2552 ret = os_snprintf(pos, end - pos, "%sNONE",
2553 pos == start ? "" : delim);
2554 if (os_snprintf_error(end - pos, ret))
2555 return -1;
2556 pos += ret;
2557 }
2558
2559 return pos - start;
2560 }
2561
2562
2563 int wpa_select_ap_group_cipher(int wpa, int wpa_pairwise, int rsn_pairwise)
2564 {
2565 int pairwise = 0;
2566
2567 /* Select group cipher based on the enabled pairwise cipher suites */
2568 if (wpa & 1)
2569 pairwise |= wpa_pairwise;
2570 if (wpa & 2)
2571 pairwise |= rsn_pairwise;
2572
2573 if (pairwise & WPA_CIPHER_TKIP)
2574 return WPA_CIPHER_TKIP;
2575 if ((pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP)
2576 return WPA_CIPHER_GCMP;
2577 if ((pairwise & (WPA_CIPHER_GCMP_256 | WPA_CIPHER_CCMP |
2578 WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP_256)
2579 return WPA_CIPHER_GCMP_256;
2580 if ((pairwise & (WPA_CIPHER_CCMP_256 | WPA_CIPHER_CCMP |
2581 WPA_CIPHER_GCMP)) == WPA_CIPHER_CCMP_256)
2582 return WPA_CIPHER_CCMP_256;
2583 return WPA_CIPHER_CCMP;
2584 }
2585
2586
2587 #ifdef CONFIG_FILS
2588 int fils_domain_name_hash(const char *domain, u8 *hash)
2589 {
2590 char buf[255], *wpos = buf;
2591 const char *pos = domain;
2592 size_t len;
2593 const u8 *addr[1];
2594 u8 mac[SHA256_MAC_LEN];
2595
2596 for (len = 0; len < sizeof(buf) && *pos; len++) {
2597 if (isalpha(*pos) && isupper(*pos))
2598 *wpos++ = tolower(*pos);
2599 else
2600 *wpos++ = *pos;
2601 pos++;
2602 }
2603
2604 addr[0] = (const u8 *) buf;
2605 if (sha256_vector(1, addr, &len, mac) < 0)
2606 return -1;
2607 os_memcpy(hash, mac, 2);
2608 return 0;
2609 }
2610 #endif /* CONFIG_FILS */
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