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
wpa_kck_len(int akmp,size_t pmk_len)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
wpa_kck2_len(int akmp)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
wpa_kek_len(int akmp,size_t pmk_len)60 static unsigned int wpa_kek_len(int akmp, size_t pmk_len)
61 {
62 switch (akmp) {
63 #ifdef CONFIG_IEEE80211R
64 case WPA_KEY_MGMT_FILS_SHA384:
65 case WPA_KEY_MGMT_FT_FILS_SHA384:
66 return 64;
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 #endif /* CONFIG_IEEE80211R */
72 #ifdef LOS_CONFIG_WPA_ENTERPRISE
73 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
74 return 32;
75 #endif /* LOS_CONFIG_WPA_ENTERPRISE */
76 #ifndef EXT_WPA_KEY_MGMT_CROP
77 case WPA_KEY_MGMT_DPP:
78 return pmk_len <= 32 ? 16 : 32;
79 case WPA_KEY_MGMT_OWE:
80 return pmk_len <= 32 ? 16 : 32;
81 #endif /* EXT_WPA_KEY_MGMT_CROP */
82 default:
83 return 16;
84 }
85 }
86
87
88 #ifdef CONFIG_IEEE80211R
wpa_kek2_len(int akmp)89 static unsigned int wpa_kek2_len(int akmp)
90 {
91 switch (akmp) {
92 case WPA_KEY_MGMT_FT_FILS_SHA256:
93 return 16;
94 case WPA_KEY_MGMT_FT_FILS_SHA384:
95 return 32;
96 default:
97 return 0;
98 }
99 }
100 #endif /* CONFIG_IEEE80211R */
101
102
wpa_mic_len(int akmp,size_t pmk_len)103 unsigned int wpa_mic_len(int akmp, size_t pmk_len)
104 {
105 switch (akmp) {
106 #ifdef LOS_CONFIG_WPA_ENTERPRISE
107 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
108 return 24;
109 #endif /* LOS_CONFIG_WPA_ENTERPRISE */
110 case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
111 return 24;
112 case WPA_KEY_MGMT_FILS_SHA256:
113 case WPA_KEY_MGMT_FILS_SHA384:
114 case WPA_KEY_MGMT_FT_FILS_SHA256:
115 case WPA_KEY_MGMT_FT_FILS_SHA384:
116 return 0;
117 #ifndef EXT_WPA_KEY_MGMT_CROP
118 case WPA_KEY_MGMT_DPP:
119 return pmk_len / 2;
120 #endif /* EXT_WPA_KEY_MGMT_CROP */
121 case WPA_KEY_MGMT_OWE:
122 return pmk_len / 2;
123 default:
124 return 16;
125 }
126 }
127
128
129 /**
130 * wpa_use_akm_defined - Is AKM-defined Key Descriptor Version used
131 * @akmp: WPA_KEY_MGMT_* used in key derivation
132 * Returns: 1 if AKM-defined Key Descriptor Version is used; 0 otherwise
133 */
wpa_use_akm_defined(int akmp)134 int wpa_use_akm_defined(int akmp)
135 {
136 #ifndef EXT_WPA_KEY_MGMT_CROP
137 return akmp == WPA_KEY_MGMT_OSEN ||
138 akmp == WPA_KEY_MGMT_OWE ||
139 akmp == WPA_KEY_MGMT_DPP ||
140 akmp == WPA_KEY_MGMT_FT_IEEE8021X_SHA384 ||
141 wpa_key_mgmt_sae(akmp) ||
142 wpa_key_mgmt_suite_b(akmp) ||
143 wpa_key_mgmt_fils(akmp);
144 #else
145 #ifdef CONFIG_IEEE80211R
146 return wpa_key_mgmt_sae(akmp) || akmp == WPA_KEY_MGMT_OWE || (akmp == WPA_KEY_MGMT_FT_IEEE8021X_SHA384);
147 #else
148 return wpa_key_mgmt_sae(akmp) || akmp == WPA_KEY_MGMT_OWE;
149 #endif /* CONFIG_IEEE80211R */
150 #endif /* EXT_WPA_KEY_MGMT_CROP */
151 }
152
153
154 /**
155 * wpa_use_cmac - Is CMAC integrity algorithm used for EAPOL-Key MIC
156 * @akmp: WPA_KEY_MGMT_* used in key derivation
157 * Returns: 1 if CMAC is used; 0 otherwise
158 */
wpa_use_cmac(int akmp)159 int wpa_use_cmac(int akmp)
160 {
161 #ifndef EXT_WPA_KEY_MGMT_CROP
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 #else
170 #ifdef CONFIG_IEEE80211R
171 return wpa_key_mgmt_sha256(akmp) ||
172 akmp == WPA_KEY_MGMT_OWE ||
173 wpa_key_mgmt_ft(akmp) ||
174 wpa_key_mgmt_sae(akmp);
175 #else
176 return wpa_key_mgmt_sha256(akmp) ||
177 akmp == WPA_KEY_MGMT_OWE ||
178 wpa_key_mgmt_sae(akmp);
179 #endif /* CONFIG_IEEE80211R */
180 #endif /* EXT_WPA_KEY_MGMT_CROP */
181 }
182
183
184 /**
185 * wpa_use_aes_key_wrap - Is AES Keywrap algorithm used for EAPOL-Key Key Data
186 * @akmp: WPA_KEY_MGMT_* used in key derivation
187 * Returns: 1 if AES Keywrap is used; 0 otherwise
188 *
189 * Note: AKM 00-0F-AC:1 and 00-0F-AC:2 have special rules for selecting whether
190 * to use AES Keywrap based on the negotiated pairwise cipher. This function
191 * does not cover those special cases.
192 */
wpa_use_aes_key_wrap(int akmp)193 int wpa_use_aes_key_wrap(int akmp)
194 {
195 #ifndef EXT_WPA_KEY_MGMT_CROP
196 return akmp == WPA_KEY_MGMT_OSEN ||
197 akmp == WPA_KEY_MGMT_OWE ||
198 akmp == WPA_KEY_MGMT_DPP ||
199 wpa_key_mgmt_ft(akmp) ||
200 wpa_key_mgmt_sha256(akmp) ||
201 wpa_key_mgmt_sae(akmp) ||
202 wpa_key_mgmt_suite_b(akmp);
203 #else
204 #ifdef CONFIG_IEEE80211R
205 return wpa_key_mgmt_sha256(akmp) ||
206 akmp == WPA_KEY_MGMT_OWE ||
207 wpa_key_mgmt_ft(akmp) ||
208 wpa_key_mgmt_sae(akmp);
209 #else
210 return wpa_key_mgmt_sha256(akmp) ||
211 akmp == WPA_KEY_MGMT_OWE ||
212 wpa_key_mgmt_sae(akmp);
213 #endif /* CONFIG_IEEE80211R */
214 #endif /* EXT_WPA_KEY_MGMT_CROP */
215 }
216
217
218 /**
219 * wpa_eapol_key_mic - Calculate EAPOL-Key MIC
220 * @key: EAPOL-Key Key Confirmation Key (KCK)
221 * @key_len: KCK length in octets
222 * @akmp: WPA_KEY_MGMT_* used in key derivation
223 * @ver: Key descriptor version (WPA_KEY_INFO_TYPE_*)
224 * @buf: Pointer to the beginning of the EAPOL header (version field)
225 * @len: Length of the EAPOL frame (from EAPOL header to the end of the frame)
226 * @mic: Pointer to the buffer to which the EAPOL-Key MIC is written
227 * Returns: 0 on success, -1 on failure
228 *
229 * Calculate EAPOL-Key MIC for an EAPOL-Key packet. The EAPOL-Key MIC field has
230 * to be cleared (all zeroes) when calling this function.
231 *
232 * Note: 'IEEE Std 802.11i-2004 - 8.5.2 EAPOL-Key frames' has an error in the
233 * description of the Key MIC calculation. It includes packet data from the
234 * beginning of the EAPOL-Key header, not EAPOL header. This incorrect change
235 * happened during final editing of the standard and the correct behavior is
236 * defined in the last draft (IEEE 802.11i/D10).
237 */
wpa_eapol_key_mic(const u8 * key,size_t key_len,int akmp,int ver,const u8 * buf,size_t len,u8 * mic)238 int wpa_eapol_key_mic(const u8 *key, size_t key_len, int akmp, int ver,
239 const u8 *buf, size_t len, u8 *mic)
240 {
241 u8 hash[SHA512_MAC_LEN];
242
243 if (key_len == 0) {
244 wpa_warning_log0(MSG_DEBUG,
245 "WPA: KCK not set - cannot calculate MIC");
246 return -1;
247 }
248
249 switch (ver) {
250 #ifndef CONFIG_FIPS
251 case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4:
252 #ifndef CONFIG_PRINT_NOUSE
253 wpa_warning_log0(MSG_DEBUG, "WPA: EAPOL-Key MIC using HMAC-MD5");
254 #endif /* CONFIG_PRINT_NOUSE */
255 return hmac_md5(key, key_len, buf, len, mic);
256 #endif /* CONFIG_FIPS */
257 case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES:
258 #ifndef CONFIG_PRINT_NOUSE
259 wpa_warning_log0(MSG_DEBUG, "WPA: EAPOL-Key MIC using HMAC-SHA1");
260 #endif /* CONFIG_PRINT_NOUSE */
261 if (hmac_sha1(key, key_len, buf, len, hash))
262 return -1;
263 os_memcpy(mic, hash, MD5_MAC_LEN);
264 break;
265 #if defined(CONFIG_IEEE80211R) || defined(CONFIG_IEEE80211W)
266 case WPA_KEY_INFO_TYPE_AES_128_CMAC:
267 #ifndef CONFIG_PRINT_NOUSE
268 wpa_warning_log0(MSG_DEBUG, "WPA: EAPOL-Key MIC using AES-CMAC");
269 #endif /* CONFIG_PRINT_NOUSE */
270 return omac1_aes_128(key, buf, len, mic);
271 #endif /* CONFIG_IEEE80211R || CONFIG_IEEE80211W */
272 case WPA_KEY_INFO_TYPE_AKM_DEFINED:
273 switch (akmp) {
274 #ifdef CONFIG_SAE
275 case WPA_KEY_MGMT_SAE:
276 case WPA_KEY_MGMT_FT_SAE:
277 wpa_warning_log0(MSG_DEBUG,
278 "WPA: EAPOL-Key MIC using AES-CMAC (AKM-defined - SAE)");
279 return omac1_aes_128(key, buf, len, mic);
280 #endif /* CONFIG_SAE */
281 #ifdef CONFIG_HS20
282 case WPA_KEY_MGMT_OSEN:
283 wpa_warning_log0(MSG_DEBUG,
284 "WPA: EAPOL-Key MIC using AES-CMAC (AKM-defined - OSEN)");
285 return omac1_aes_128(key, buf, len, mic);
286 #endif /* CONFIG_HS20 */
287 #ifdef CONFIG_SUITEB
288 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
289 wpa_warning_log0(MSG_DEBUG,
290 "WPA: EAPOL-Key MIC using HMAC-SHA256 (AKM-defined - Suite B)");
291 if (hmac_sha256(key, key_len, buf, len, hash))
292 return -1;
293 os_memcpy(mic, hash, MD5_MAC_LEN);
294 break;
295 #endif /* CONFIG_SUITEB */
296 #ifdef CONFIG_SUITEB192
297 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
298 wpa_warning_log0(MSG_DEBUG,
299 "WPA: EAPOL-Key MIC using HMAC-SHA384 (AKM-defined - Suite B 192-bit)");
300 if (hmac_sha384(key, key_len, buf, len, hash))
301 return -1;
302 os_memcpy(mic, hash, 24);
303 break;
304 #endif /* CONFIG_SUITEB192 */
305 #ifdef CONFIG_OWE
306 case WPA_KEY_MGMT_OWE:
307 #ifndef CONFIG_PRINT_NOUSE
308 wpa_warning_log0(MSG_DEBUG,
309 "WPA: EAPOL-Key MIC using HMAC-SHA%u (AKM-defined - OWE)",
310 (unsigned int) key_len * 8 * 2);
311 #endif /* CONFIG_PRINT_NOUSE */
312 if (key_len == 128 / 8) {
313 if (hmac_sha256(key, key_len, buf, len, hash))
314 return -1;
315 } else if (key_len == 192 / 8) {
316 if (hmac_sha384(key, key_len, buf, len, hash))
317 return -1;
318 } else if (key_len == 256 / 8) {
319 if (hmac_sha512(key, key_len, buf, len, hash))
320 return -1;
321 } else {
322 wpa_printf(MSG_INFO,
323 "OWE: Unsupported KCK length: %u",
324 (unsigned int) key_len);
325 return -1;
326 }
327 os_memcpy(mic, hash, key_len);
328 break;
329 #endif /* CONFIG_OWE */
330 #ifdef CONFIG_DPP
331 case WPA_KEY_MGMT_DPP:
332 wpa_warning_log0(MSG_DEBUG,
333 "WPA: EAPOL-Key MIC using HMAC-SHA%u (AKM-defined - DPP)",
334 (unsigned int) key_len * 8 * 2);
335 if (key_len == 128 / 8) {
336 if (hmac_sha256(key, key_len, buf, len, hash))
337 return -1;
338 } else if (key_len == 192 / 8) {
339 if (hmac_sha384(key, key_len, buf, len, hash))
340 return -1;
341 } else if (key_len == 256 / 8) {
342 if (hmac_sha512(key, key_len, buf, len, hash))
343 return -1;
344 } else {
345 wpa_printf(MSG_INFO,
346 "DPP: Unsupported KCK length: %u",
347 (unsigned int) key_len);
348 return -1;
349 }
350 os_memcpy(mic, hash, key_len);
351 break;
352 #endif /* CONFIG_DPP */
353 #if defined(CONFIG_IEEE80211R) && defined(CONFIG_SHA384)
354 case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
355 wpa_warning_log0(MSG_DEBUG,
356 "WPA: EAPOL-Key MIC using HMAC-SHA384 (AKM-defined - FT 802.1X SHA384)");
357 if (hmac_sha384(key, key_len, buf, len, hash))
358 return -1;
359 os_memcpy(mic, hash, 24);
360 break;
361 #endif /* CONFIG_IEEE80211R && CONFIG_SHA384 */
362 default:
363 #ifndef CONFIG_PRINT_NOUSE
364 wpa_printf(MSG_DEBUG,
365 "WPA: EAPOL-Key MIC algorithm not known (AKM-defined - akmp=0x%x)",
366 akmp);
367 #endif /* CONFIG_PRINT_NOUSE */
368 return -1;
369 }
370 break;
371 default:
372 #ifndef CONFIG_PRINT_NOUSE
373 wpa_printf(MSG_DEBUG,
374 "WPA: EAPOL-Key MIC algorithm not known (ver=%d)",
375 ver);
376 #endif /* CONFIG_PRINT_NOUSE */
377 return -1;
378 }
379
380 return 0;
381 }
382
383
384 /**
385 * wpa_pmk_to_ptk - Calculate PTK from PMK, addresses, and nonces
386 * @pmk: Pairwise master key
387 * @pmk_len: Length of PMK
388 * @label: Label to use in derivation
389 * @addr1: AA or SA
390 * @addr2: SA or AA
391 * @nonce1: ANonce or SNonce
392 * @nonce2: SNonce or ANonce
393 * @ptk: Buffer for pairwise transient key
394 * @akmp: Negotiated AKM
395 * @cipher: Negotiated pairwise cipher
396 * @kdk_len: The length in octets that should be derived for KDK
397 * Returns: 0 on success, -1 on failure
398 *
399 * IEEE Std 802.11i-2004 - 8.5.1.2 Pairwise key hierarchy
400 * PTK = PRF-X(PMK, "Pairwise key expansion",
401 * Min(AA, SA) || Max(AA, SA) ||
402 * Min(ANonce, SNonce) || Max(ANonce, SNonce)
403 * [ || Z.x ])
404 *
405 * The optional Z.x component is used only with DPP and that part is not defined
406 * in IEEE 802.11.
407 */
wpa_pmk_to_ptk(const u8 * pmk,size_t pmk_len,const char * label,const u8 * addr1,const u8 * addr2,const u8 * nonce1,const u8 * nonce2,struct wpa_ptk * ptk,int akmp,int cipher,const u8 * z,size_t z_len,size_t kdk_len)408 int wpa_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const char *label,
409 const u8 *addr1, const u8 *addr2,
410 const u8 *nonce1, const u8 *nonce2,
411 struct wpa_ptk *ptk, int akmp, int cipher,
412 const u8 *z, size_t z_len, size_t kdk_len)
413 {
414 #define MAX_Z_LEN 66 /* with NIST P-521 */
415 u8 data[2 * ETH_ALEN + 2 * WPA_NONCE_LEN + MAX_Z_LEN];
416 size_t data_len = 2 * ETH_ALEN + 2 * WPA_NONCE_LEN;
417 u8 tmp[WPA_KCK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN +
418 WPA_KDK_MAX_LEN];
419 size_t ptk_len;
420 #ifdef CONFIG_OWE
421 int owe_ptk_workaround = 0;
422
423 if (akmp == (WPA_KEY_MGMT_OWE | WPA_KEY_MGMT_PSK_SHA256)) {
424 owe_ptk_workaround = 1;
425 akmp = WPA_KEY_MGMT_OWE;
426 }
427 #endif /* CONFIG_OWE */
428
429 if (pmk_len == 0) {
430 #ifndef CONFIG_PRINT_NOUSE
431 wpa_printf(MSG_ERROR, "WPA: No PMK set for PTK derivation");
432 #endif /* CONFIG_PRINT_NOUSE */
433 return -1;
434 }
435
436 if (z_len > MAX_Z_LEN)
437 return -1;
438
439 if (os_memcmp(addr1, addr2, ETH_ALEN) < 0) {
440 os_memcpy(data, addr1, ETH_ALEN);
441 os_memcpy(data + ETH_ALEN, addr2, ETH_ALEN);
442 } else {
443 os_memcpy(data, addr2, ETH_ALEN);
444 os_memcpy(data + ETH_ALEN, addr1, ETH_ALEN);
445 }
446
447 if (os_memcmp(nonce1, nonce2, WPA_NONCE_LEN) < 0) {
448 os_memcpy(data + 2 * ETH_ALEN, nonce1, WPA_NONCE_LEN);
449 os_memcpy(data + 2 * ETH_ALEN + WPA_NONCE_LEN, nonce2,
450 WPA_NONCE_LEN);
451 } else {
452 os_memcpy(data + 2 * ETH_ALEN, nonce2, WPA_NONCE_LEN);
453 os_memcpy(data + 2 * ETH_ALEN + WPA_NONCE_LEN, nonce1,
454 WPA_NONCE_LEN);
455 }
456
457 if (z && z_len) {
458 os_memcpy(data + 2 * ETH_ALEN + 2 * WPA_NONCE_LEN, z, z_len);
459 data_len += z_len;
460 }
461
462 if (kdk_len > WPA_KDK_MAX_LEN) {
463 wpa_printf(MSG_ERROR,
464 "WPA: KDK len=%zu exceeds max supported len",
465 kdk_len);
466 return -1;
467 }
468
469 ptk->kck_len = wpa_kck_len(akmp, pmk_len);
470 ptk->kek_len = wpa_kek_len(akmp, pmk_len);
471 ptk->tk_len = wpa_cipher_key_len(cipher);
472 ptk->kdk_len = kdk_len;
473 if (ptk->tk_len == 0) {
474 #ifndef CONFIG_PRINT_NOUSE
475 wpa_printf(MSG_ERROR,
476 "WPA: Unsupported cipher (0x%x) used in PTK derivation",
477 cipher);
478 #endif /* CONFIG_PRINT_NOUSE */
479 return -1;
480 }
481 ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len + ptk->kdk_len;
482
483 #ifndef EXT_WPA_KEY_MGMT_CROP
484 if (wpa_key_mgmt_sha384(akmp)) {
485 #if defined(CONFIG_SUITEB192) || defined(CONFIG_FILS)
486 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA384)");
487 if (sha384_prf(pmk, pmk_len, label, data, data_len,
488 tmp, ptk_len) < 0)
489 return -1;
490 #else /* CONFIG_SUITEB192 || CONFIG_FILS */
491 return -1;
492 #endif /* CONFIG_SUITEB192 || CONFIG_FILS */
493 } else
494 #endif /* EXT_WPA_KEY_MGMT_CROP */
495 if (wpa_key_mgmt_sha256(akmp) || akmp == WPA_KEY_MGMT_OWE) {
496 #if defined(CONFIG_IEEE80211W) || defined(CONFIG_SAE)
497 #ifndef CONFIG_PRINT_NOUSE
498 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA256)");
499 #endif /* CONFIG_PRINT_NOUSE */
500 if (sha256_prf(pmk, pmk_len, label, data, data_len,
501 tmp, ptk_len) < 0)
502 return -1;
503 #else /* CONFIG_IEEE80211W or CONFIG_SAE or CONFIG_FILS */
504 return -1;
505 #endif /* CONFIG_IEEE80211W or CONFIG_SAE or CONFIG_FILS */
506 #ifdef CONFIG_OWE
507 } else if (akmp == WPA_KEY_MGMT_OWE && (pmk_len == 32 ||
508 owe_ptk_workaround)) {
509 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA256)");
510 if (sha256_prf(pmk, pmk_len, label, data, data_len,
511 tmp, ptk_len) < 0)
512 return -1;
513 } else if (akmp == WPA_KEY_MGMT_OWE && pmk_len == 48) {
514 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA384)");
515 if (sha384_prf(pmk, pmk_len, label, data, data_len,
516 tmp, ptk_len) < 0)
517 return -1;
518 } else if (akmp == WPA_KEY_MGMT_OWE && pmk_len == 64) {
519 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA512)");
520 if (sha512_prf(pmk, pmk_len, label, data, data_len,
521 tmp, ptk_len) < 0)
522 return -1;
523 } else if (akmp == WPA_KEY_MGMT_OWE) {
524 wpa_printf(MSG_INFO, "OWE: Unknown PMK length %u",
525 (unsigned int) pmk_len);
526 return -1;
527 #endif /* CONFIG_OWE */
528 #ifdef CONFIG_DPP
529 } else if (akmp == WPA_KEY_MGMT_DPP && pmk_len == 32) {
530 wpa_warning_log0(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA256)");
531 if (sha256_prf(pmk, pmk_len, label, data, data_len,
532 tmp, ptk_len) < 0)
533 return -1;
534 } else if (akmp == WPA_KEY_MGMT_DPP && pmk_len == 48) {
535 wpa_warning_log0(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA384)");
536 if (sha384_prf(pmk, pmk_len, label, data, data_len,
537 tmp, ptk_len) < 0)
538 return -1;
539 } else if (akmp == WPA_KEY_MGMT_DPP && pmk_len == 64) {
540 wpa_warning_log0(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA512)");
541 if (sha512_prf(pmk, pmk_len, label, data, data_len,
542 tmp, ptk_len) < 0)
543 return -1;
544 } else if (akmp == WPA_KEY_MGMT_DPP) {
545 wpa_warning_log1(MSG_INFO, "DPP: Unknown PMK length %u",
546 (unsigned int) pmk_len);
547 return -1;
548 #endif /* CONFIG_DPP */
549 } else {
550 #ifndef CONFIG_PRINT_NOUSE
551 wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA1)");
552 #endif /* CONFIG_PRINT_NOUSE */
553 if (sha1_prf(pmk, pmk_len, label, data, data_len, tmp,
554 ptk_len) < 0)
555 return -1;
556 }
557 #ifndef CONFIG_PRINT_NOUSE
558 wpa_printf(MSG_DEBUG, "WPA: PTK derivation - A1=" MACSTR " A2=" MACSTR,
559 MAC2STR(addr1), MAC2STR(addr2));
560 wpa_hexdump(MSG_DEBUG, "WPA: Nonce1", nonce1, WPA_NONCE_LEN);
561 wpa_hexdump(MSG_DEBUG, "WPA: Nonce2", nonce2, WPA_NONCE_LEN);
562 if (z && z_len)
563 wpa_hexdump_key(MSG_DEBUG, "WPA: Z.x", z, z_len);
564 wpa_hexdump_key(MSG_DEBUG, "WPA: PMK", pmk, pmk_len);
565 wpa_hexdump_key(MSG_DEBUG, "WPA: PTK", tmp, ptk_len);
566 #endif /* CONFIG_PRINT_NOUSE */
567
568 os_memcpy(ptk->kck, tmp, ptk->kck_len);
569 #ifndef CONFIG_PRINT_NOUSE
570 wpa_hexdump_key(MSG_DEBUG, "WPA: KCK", ptk->kck, ptk->kck_len);
571 #endif /* CONFIG_PRINT_NOUSE */
572
573 os_memcpy(ptk->kek, tmp + ptk->kck_len, ptk->kek_len);
574 #ifndef CONFIG_PRINT_NOUSE
575 wpa_hexdump_key(MSG_DEBUG, "WPA: KEK", ptk->kek, ptk->kek_len);
576 #endif /* CONFIG_PRINT_NOUSE */
577
578 os_memcpy(ptk->tk, tmp + ptk->kck_len + ptk->kek_len, ptk->tk_len);
579 #ifndef CONFIG_PRINT_NOUSE
580 wpa_hexdump_key(MSG_DEBUG, "WPA: TK", ptk->tk, ptk->tk_len);
581 #endif /* CONFIG_PRINT_NOUSE */
582 if (kdk_len) {
583 os_memcpy(ptk->kdk, tmp + ptk->kck_len + ptk->kek_len +
584 ptk->tk_len, ptk->kdk_len);
585 wpa_hexdump_key(MSG_DEBUG, "WPA: KDK", ptk->kdk, ptk->kdk_len);
586 }
587
588 ptk->kek2_len = 0;
589 ptk->kck2_len = 0;
590
591 os_memset(tmp, 0, sizeof(tmp));
592 os_memset(data, 0, data_len);
593 return 0;
594 }
595
596 #ifdef CONFIG_FILS
597
fils_rmsk_to_pmk(int akmp,const u8 * rmsk,size_t rmsk_len,const u8 * snonce,const u8 * anonce,const u8 * dh_ss,size_t dh_ss_len,u8 * pmk,size_t * pmk_len)598 int fils_rmsk_to_pmk(int akmp, const u8 *rmsk, size_t rmsk_len,
599 const u8 *snonce, const u8 *anonce, const u8 *dh_ss,
600 size_t dh_ss_len, u8 *pmk, size_t *pmk_len)
601 {
602 u8 nonces[2 * FILS_NONCE_LEN];
603 const u8 *addr[2];
604 size_t len[2];
605 size_t num_elem;
606 int res;
607
608 /* PMK = HMAC-Hash(SNonce || ANonce, rMSK [ || DHss ]) */
609 wpa_printf(MSG_DEBUG, "FILS: rMSK to PMK derivation");
610
611 if (wpa_key_mgmt_sha384(akmp))
612 *pmk_len = SHA384_MAC_LEN;
613 else if (wpa_key_mgmt_sha256(akmp))
614 *pmk_len = SHA256_MAC_LEN;
615 else
616 return -1;
617
618 wpa_hexdump_key(MSG_DEBUG, "FILS: rMSK", rmsk, rmsk_len);
619 wpa_hexdump(MSG_DEBUG, "FILS: SNonce", snonce, FILS_NONCE_LEN);
620 wpa_hexdump(MSG_DEBUG, "FILS: ANonce", anonce, FILS_NONCE_LEN);
621 wpa_hexdump(MSG_DEBUG, "FILS: DHss", dh_ss, dh_ss_len);
622
623 os_memcpy(nonces, snonce, FILS_NONCE_LEN);
624 os_memcpy(&nonces[FILS_NONCE_LEN], anonce, FILS_NONCE_LEN);
625 addr[0] = rmsk;
626 len[0] = rmsk_len;
627 num_elem = 1;
628 if (dh_ss) {
629 addr[1] = dh_ss;
630 len[1] = dh_ss_len;
631 num_elem++;
632 }
633 if (wpa_key_mgmt_sha384(akmp))
634 res = hmac_sha384_vector(nonces, 2 * FILS_NONCE_LEN, num_elem,
635 addr, len, pmk);
636 else
637 res = hmac_sha256_vector(nonces, 2 * FILS_NONCE_LEN, num_elem,
638 addr, len, pmk);
639 if (res == 0)
640 wpa_hexdump_key(MSG_DEBUG, "FILS: PMK", pmk, *pmk_len);
641 else
642 *pmk_len = 0;
643 return res;
644 }
645
646
fils_pmkid_erp(int akmp,const u8 * reauth,size_t reauth_len,u8 * pmkid)647 int fils_pmkid_erp(int akmp, const u8 *reauth, size_t reauth_len,
648 u8 *pmkid)
649 {
650 const u8 *addr[1];
651 size_t len[1];
652 u8 hash[SHA384_MAC_LEN];
653 int res;
654
655 /* PMKID = Truncate-128(Hash(EAP-Initiate/Reauth)) */
656 addr[0] = reauth;
657 len[0] = reauth_len;
658 if (wpa_key_mgmt_sha384(akmp))
659 res = sha384_vector(1, addr, len, hash);
660 else if (wpa_key_mgmt_sha256(akmp))
661 res = sha256_vector(1, addr, len, hash);
662 else
663 return -1;
664 if (res)
665 return res;
666 os_memcpy(pmkid, hash, PMKID_LEN);
667 wpa_hexdump(MSG_DEBUG, "FILS: PMKID", pmkid, PMKID_LEN);
668 return 0;
669 }
670
671
fils_pmk_to_ptk(const u8 * pmk,size_t pmk_len,const u8 * spa,const u8 * aa,const u8 * snonce,const u8 * anonce,const u8 * dhss,size_t dhss_len,struct wpa_ptk * ptk,u8 * ick,size_t * ick_len,int akmp,int cipher,u8 * fils_ft,size_t * fils_ft_len,size_t kdk_len)672 int fils_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const u8 *spa, const u8 *aa,
673 const u8 *snonce, const u8 *anonce, const u8 *dhss,
674 size_t dhss_len, struct wpa_ptk *ptk,
675 u8 *ick, size_t *ick_len, int akmp, int cipher,
676 u8 *fils_ft, size_t *fils_ft_len, size_t kdk_len)
677 {
678 u8 *data, *pos;
679 size_t data_len;
680 u8 tmp[FILS_ICK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN +
681 FILS_FT_MAX_LEN + WPA_KDK_MAX_LEN];
682 size_t key_data_len;
683 const char *label = "FILS PTK Derivation";
684 int ret = -1;
685 size_t offset;
686
687 /*
688 * FILS-Key-Data = PRF-X(PMK, "FILS PTK Derivation",
689 * SPA || AA || SNonce || ANonce [ || DHss ])
690 * ICK = L(FILS-Key-Data, 0, ICK_bits)
691 * KEK = L(FILS-Key-Data, ICK_bits, KEK_bits)
692 * TK = L(FILS-Key-Data, ICK_bits + KEK_bits, TK_bits)
693 * If doing FT initial mobility domain association:
694 * FILS-FT = L(FILS-Key-Data, ICK_bits + KEK_bits + TK_bits,
695 * FILS-FT_bits)
696 * When a KDK is derived:
697 * KDK = L(FILS-Key-Data, ICK_bits + KEK_bits + TK_bits + FILS-FT_bits,
698 * KDK_bits)
699 */
700 data_len = 2 * ETH_ALEN + 2 * FILS_NONCE_LEN + dhss_len;
701 data = os_malloc(data_len);
702 if (!data)
703 goto err;
704 pos = data;
705 os_memcpy(pos, spa, ETH_ALEN);
706 pos += ETH_ALEN;
707 os_memcpy(pos, aa, ETH_ALEN);
708 pos += ETH_ALEN;
709 os_memcpy(pos, snonce, FILS_NONCE_LEN);
710 pos += FILS_NONCE_LEN;
711 os_memcpy(pos, anonce, FILS_NONCE_LEN);
712 pos += FILS_NONCE_LEN;
713 if (dhss)
714 os_memcpy(pos, dhss, dhss_len);
715
716 ptk->kck_len = 0;
717 ptk->kek_len = wpa_kek_len(akmp, pmk_len);
718 ptk->tk_len = wpa_cipher_key_len(cipher);
719 if (wpa_key_mgmt_sha384(akmp))
720 *ick_len = 48;
721 else if (wpa_key_mgmt_sha256(akmp))
722 *ick_len = 32;
723 else
724 goto err;
725 key_data_len = *ick_len + ptk->kek_len + ptk->tk_len;
726
727 if (kdk_len) {
728 if (kdk_len > WPA_KDK_MAX_LEN) {
729 wpa_printf(MSG_ERROR, "FILS: KDK len=%zu too big",
730 kdk_len);
731 goto err;
732 }
733
734 ptk->kdk_len = kdk_len;
735 key_data_len += kdk_len;
736 } else {
737 ptk->kdk_len = 0;
738 }
739
740 if (fils_ft && fils_ft_len) {
741 if (akmp == WPA_KEY_MGMT_FT_FILS_SHA256) {
742 *fils_ft_len = 32;
743 } else if (akmp == WPA_KEY_MGMT_FT_FILS_SHA384) {
744 *fils_ft_len = 48;
745 } else {
746 *fils_ft_len = 0;
747 fils_ft = NULL;
748 }
749 key_data_len += *fils_ft_len;
750 }
751
752 if (wpa_key_mgmt_sha384(akmp)) {
753 wpa_printf(MSG_DEBUG, "FILS: PTK derivation using PRF(SHA384)");
754 if (sha384_prf(pmk, pmk_len, label, data, data_len,
755 tmp, key_data_len) < 0)
756 goto err;
757 } else {
758 wpa_printf(MSG_DEBUG, "FILS: PTK derivation using PRF(SHA256)");
759 if (sha256_prf(pmk, pmk_len, label, data, data_len,
760 tmp, key_data_len) < 0)
761 goto err;
762 }
763
764 wpa_printf(MSG_DEBUG, "FILS: PTK derivation - SPA=" MACSTR
765 " AA=" MACSTR, MAC2STR(spa), MAC2STR(aa));
766 wpa_hexdump(MSG_DEBUG, "FILS: SNonce", snonce, FILS_NONCE_LEN);
767 wpa_hexdump(MSG_DEBUG, "FILS: ANonce", anonce, FILS_NONCE_LEN);
768 if (dhss)
769 wpa_hexdump_key(MSG_DEBUG, "FILS: DHss", dhss, dhss_len);
770 wpa_hexdump_key(MSG_DEBUG, "FILS: PMK", pmk, pmk_len);
771 wpa_hexdump_key(MSG_DEBUG, "FILS: FILS-Key-Data", tmp, key_data_len);
772
773 os_memcpy(ick, tmp, *ick_len);
774 offset = *ick_len;
775 wpa_hexdump_key(MSG_DEBUG, "FILS: ICK", ick, *ick_len);
776
777 os_memcpy(ptk->kek, tmp + offset, ptk->kek_len);
778 wpa_hexdump_key(MSG_DEBUG, "FILS: KEK", ptk->kek, ptk->kek_len);
779 offset += ptk->kek_len;
780
781 os_memcpy(ptk->tk, tmp + offset, ptk->tk_len);
782 wpa_hexdump_key(MSG_DEBUG, "FILS: TK", ptk->tk, ptk->tk_len);
783 offset += ptk->tk_len;
784
785 if (fils_ft && fils_ft_len) {
786 os_memcpy(fils_ft, tmp + offset, *fils_ft_len);
787 wpa_hexdump_key(MSG_DEBUG, "FILS: FILS-FT",
788 fils_ft, *fils_ft_len);
789 offset += *fils_ft_len;
790 }
791
792 if (ptk->kdk_len) {
793 os_memcpy(ptk->kdk, tmp + offset, ptk->kdk_len);
794 wpa_hexdump_key(MSG_DEBUG, "FILS: KDK", ptk->kdk, ptk->kdk_len);
795 }
796
797 ptk->kek2_len = 0;
798 ptk->kck2_len = 0;
799
800 os_memset(tmp, 0, sizeof(tmp));
801 ret = 0;
802 err:
803 bin_clear_free(data, data_len);
804 return ret;
805 }
806
807
fils_key_auth_sk(const u8 * ick,size_t ick_len,const u8 * snonce,const u8 * anonce,const u8 * sta_addr,const u8 * bssid,const u8 * g_sta,size_t g_sta_len,const u8 * g_ap,size_t g_ap_len,int akmp,u8 * key_auth_sta,u8 * key_auth_ap,size_t * key_auth_len)808 int fils_key_auth_sk(const u8 *ick, size_t ick_len, const u8 *snonce,
809 const u8 *anonce, const u8 *sta_addr, const u8 *bssid,
810 const u8 *g_sta, size_t g_sta_len,
811 const u8 *g_ap, size_t g_ap_len,
812 int akmp, u8 *key_auth_sta, u8 *key_auth_ap,
813 size_t *key_auth_len)
814 {
815 const u8 *addr[6];
816 size_t len[6];
817 size_t num_elem = 4;
818 int res;
819
820 wpa_printf(MSG_DEBUG, "FILS: Key-Auth derivation: STA-MAC=" MACSTR
821 " AP-BSSID=" MACSTR, MAC2STR(sta_addr), MAC2STR(bssid));
822 wpa_hexdump_key(MSG_DEBUG, "FILS: ICK", ick, ick_len);
823 wpa_hexdump(MSG_DEBUG, "FILS: SNonce", snonce, FILS_NONCE_LEN);
824 wpa_hexdump(MSG_DEBUG, "FILS: ANonce", anonce, FILS_NONCE_LEN);
825 wpa_hexdump(MSG_DEBUG, "FILS: gSTA", g_sta, g_sta_len);
826 wpa_hexdump(MSG_DEBUG, "FILS: gAP", g_ap, g_ap_len);
827
828 /*
829 * For (Re)Association Request frame (STA->AP):
830 * Key-Auth = HMAC-Hash(ICK, SNonce || ANonce || STA-MAC || AP-BSSID
831 * [ || gSTA || gAP ])
832 */
833 addr[0] = snonce;
834 len[0] = FILS_NONCE_LEN;
835 addr[1] = anonce;
836 len[1] = FILS_NONCE_LEN;
837 addr[2] = sta_addr;
838 len[2] = ETH_ALEN;
839 addr[3] = bssid;
840 len[3] = ETH_ALEN;
841 if (g_sta && g_sta_len && g_ap && g_ap_len) {
842 addr[4] = g_sta;
843 len[4] = g_sta_len;
844 addr[5] = g_ap;
845 len[5] = g_ap_len;
846 num_elem = 6;
847 }
848
849 if (wpa_key_mgmt_sha384(akmp)) {
850 *key_auth_len = 48;
851 res = hmac_sha384_vector(ick, ick_len, num_elem, addr, len,
852 key_auth_sta);
853 } else if (wpa_key_mgmt_sha256(akmp)) {
854 *key_auth_len = 32;
855 res = hmac_sha256_vector(ick, ick_len, num_elem, addr, len,
856 key_auth_sta);
857 } else {
858 return -1;
859 }
860 if (res < 0)
861 return res;
862
863 /*
864 * For (Re)Association Response frame (AP->STA):
865 * Key-Auth = HMAC-Hash(ICK, ANonce || SNonce || AP-BSSID || STA-MAC
866 * [ || gAP || gSTA ])
867 */
868 addr[0] = anonce;
869 addr[1] = snonce;
870 addr[2] = bssid;
871 addr[3] = sta_addr;
872 if (g_sta && g_sta_len && g_ap && g_ap_len) {
873 addr[4] = g_ap;
874 len[4] = g_ap_len;
875 addr[5] = g_sta;
876 len[5] = g_sta_len;
877 }
878
879 if (wpa_key_mgmt_sha384(akmp))
880 res = hmac_sha384_vector(ick, ick_len, num_elem, addr, len,
881 key_auth_ap);
882 else if (wpa_key_mgmt_sha256(akmp))
883 res = hmac_sha256_vector(ick, ick_len, num_elem, addr, len,
884 key_auth_ap);
885 if (res < 0)
886 return res;
887
888 wpa_hexdump(MSG_DEBUG, "FILS: Key-Auth (STA)",
889 key_auth_sta, *key_auth_len);
890 wpa_hexdump(MSG_DEBUG, "FILS: Key-Auth (AP)",
891 key_auth_ap, *key_auth_len);
892
893 return 0;
894 }
895
896 #endif /* CONFIG_FILS */
897
898
899 #ifdef CONFIG_IEEE80211R
wpa_ft_mic(const u8 * kck,size_t kck_len,const u8 * sta_addr,const u8 * ap_addr,u8 transaction_seqnum,const u8 * mdie,size_t mdie_len,const u8 * ftie,size_t ftie_len,const u8 * rsnie,size_t rsnie_len,const u8 * ric,size_t ric_len,const u8 * rsnxe,size_t rsnxe_len,u8 * mic)900 int wpa_ft_mic(const u8 *kck, size_t kck_len, const u8 *sta_addr,
901 const u8 *ap_addr, u8 transaction_seqnum,
902 const u8 *mdie, size_t mdie_len,
903 const u8 *ftie, size_t ftie_len,
904 const u8 *rsnie, size_t rsnie_len,
905 const u8 *ric, size_t ric_len,
906 const u8 *rsnxe, size_t rsnxe_len,
907 u8 *mic)
908 {
909 const u8 *addr[10];
910 size_t len[10];
911 size_t i, num_elem = 0;
912 u8 zero_mic[24];
913 size_t mic_len, fte_fixed_len;
914
915 if (kck_len == 16) {
916 mic_len = 16;
917 #ifdef CONFIG_SHA384
918 } else if (kck_len == 24) {
919 mic_len = 24;
920 #endif /* CONFIG_SHA384 */
921 } else {
922 wpa_printf(MSG_WARNING, "FT: Unsupported KCK length %u",
923 (unsigned int) kck_len);
924 return -1;
925 }
926
927 fte_fixed_len = sizeof(struct rsn_ftie) - 16 + mic_len;
928
929 addr[num_elem] = sta_addr;
930 len[num_elem] = ETH_ALEN;
931 num_elem++;
932
933 addr[num_elem] = ap_addr;
934 len[num_elem] = ETH_ALEN;
935 num_elem++;
936
937 addr[num_elem] = &transaction_seqnum;
938 len[num_elem] = 1;
939 num_elem++;
940
941 if (rsnie) {
942 addr[num_elem] = rsnie;
943 len[num_elem] = rsnie_len;
944 num_elem++;
945 }
946 if (mdie) {
947 addr[num_elem] = mdie;
948 len[num_elem] = mdie_len;
949 num_elem++;
950 }
951 if (ftie) {
952 if (ftie_len < 2 + fte_fixed_len)
953 return -1;
954
955 /* IE hdr and mic_control */
956 addr[num_elem] = ftie;
957 len[num_elem] = 2 + 2;
958 num_elem++;
959
960 /* MIC field with all zeros */
961 os_memset(zero_mic, 0, mic_len);
962 addr[num_elem] = zero_mic;
963 len[num_elem] = mic_len;
964 num_elem++;
965
966 /* Rest of FTIE */
967 addr[num_elem] = ftie + 2 + 2 + mic_len;
968 len[num_elem] = ftie_len - (2 + 2 + mic_len);
969 num_elem++;
970 }
971 if (ric) {
972 addr[num_elem] = ric;
973 len[num_elem] = ric_len;
974 num_elem++;
975 }
976
977 if (rsnxe) {
978 addr[num_elem] = rsnxe;
979 len[num_elem] = rsnxe_len;
980 num_elem++;
981 }
982
983 for (i = 0; i < num_elem; i++)
984 wpa_hexdump(MSG_MSGDUMP, "FT: MIC data", addr[i], len[i]);
985 #ifdef CONFIG_SHA384
986 if (kck_len == 24) {
987 u8 hash[SHA384_MAC_LEN];
988
989 if (hmac_sha384_vector(kck, kck_len, num_elem, addr, len, hash))
990 return -1;
991 os_memcpy(mic, hash, 24);
992 }
993 #endif /* CONFIG_SHA384 */
994 if (kck_len == 16 &&
995 omac1_aes_128_vector(kck, num_elem, addr, len, mic))
996 return -1;
997
998 return 0;
999 }
1000
1001
wpa_ft_parse_ftie(const u8 * ie,size_t ie_len,struct wpa_ft_ies * parse,int use_sha384)1002 static int wpa_ft_parse_ftie(const u8 *ie, size_t ie_len,
1003 struct wpa_ft_ies *parse, int use_sha384)
1004 {
1005 const u8 *end, *pos;
1006
1007 parse->ftie = ie;
1008 parse->ftie_len = ie_len;
1009
1010 pos = ie + (use_sha384 ? sizeof(struct rsn_ftie_sha384) :
1011 sizeof(struct rsn_ftie));
1012 end = ie + ie_len;
1013 wpa_hexdump(MSG_DEBUG, "FT: Parse FTE subelements", pos, end - pos);
1014
1015 while (end - pos >= 2) {
1016 u8 id, len;
1017
1018 id = *pos++;
1019 len = *pos++;
1020 if (len > end - pos) {
1021 wpa_warning_log0(MSG_DEBUG, "FT: Truncated subelement");
1022 break;
1023 }
1024
1025 switch (id) {
1026 case FTIE_SUBELEM_R1KH_ID:
1027 if (len != FT_R1KH_ID_LEN) {
1028 wpa_warning_log1(MSG_DEBUG,
1029 "FT: Invalid R1KH-ID length in FTIE: %d",
1030 len);
1031 return -1;
1032 }
1033 parse->r1kh_id = pos;
1034 break;
1035 case FTIE_SUBELEM_GTK:
1036 parse->gtk = pos;
1037 parse->gtk_len = len;
1038 break;
1039 case FTIE_SUBELEM_R0KH_ID:
1040 if (len < 1 || len > FT_R0KH_ID_MAX_LEN) {
1041 wpa_warning_log1(MSG_DEBUG,
1042 "FT: Invalid R0KH-ID length in FTIE: %d",
1043 len);
1044 return -1;
1045 }
1046 parse->r0kh_id = pos;
1047 parse->r0kh_id_len = len;
1048 break;
1049 case FTIE_SUBELEM_IGTK:
1050 parse->igtk = pos;
1051 parse->igtk_len = len;
1052 break;
1053 #ifdef CONFIG_OCV
1054 case FTIE_SUBELEM_OCI:
1055 parse->oci = pos;
1056 parse->oci_len = len;
1057 break;
1058 #endif /* CONFIG_OCV */
1059 case FTIE_SUBELEM_BIGTK:
1060 parse->bigtk = pos;
1061 parse->bigtk_len = len;
1062 break;
1063 default:
1064 wpa_warning_log1(MSG_DEBUG, "FT: Unknown subelem id %u", id);
1065 break;
1066 }
1067
1068 pos += len;
1069 }
1070
1071 return 0;
1072 }
1073
1074
wpa_ft_parse_ies(const u8 * ies,size_t ies_len,struct wpa_ft_ies * parse,int use_sha384)1075 int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
1076 struct wpa_ft_ies *parse, int use_sha384)
1077 {
1078 const u8 *end, *pos;
1079 struct wpa_ie_data data;
1080 int ret;
1081 const struct rsn_ftie *ftie;
1082 int prot_ie_count = 0;
1083 int update_use_sha384 = 0;
1084
1085 if (use_sha384 < 0) {
1086 use_sha384 = 0;
1087 update_use_sha384 = 1;
1088 }
1089
1090 os_memset(parse, 0, sizeof(*parse));
1091 if (ies == NULL)
1092 return 0;
1093
1094 pos = ies;
1095 end = ies + ies_len;
1096 while (end - pos >= 2) {
1097 u8 id, len;
1098
1099 id = *pos++;
1100 len = *pos++;
1101 if (len > end - pos)
1102 break;
1103
1104 switch (id) {
1105 case WLAN_EID_RSN:
1106 #ifndef EXT_CODE_CROP
1107 wpa_hexdump(MSG_DEBUG, "FT: RSNE", pos, len);
1108 #endif /* EXT_CODE_CROP */
1109 parse->rsn = pos;
1110 parse->rsn_len = len;
1111 ret = wpa_parse_wpa_ie_rsn(parse->rsn - 2,
1112 parse->rsn_len + 2,
1113 &data);
1114 if (ret < 0) {
1115 wpa_warning_log1(MSG_DEBUG, "FT: Failed to parse "
1116 "RSN IE: %d", ret);
1117 return -1;
1118 }
1119 parse->rsn_capab = data.capabilities;
1120 if (data.num_pmkid == 1 && data.pmkid)
1121 parse->rsn_pmkid = data.pmkid;
1122 parse->key_mgmt = data.key_mgmt;
1123 parse->pairwise_cipher = data.pairwise_cipher;
1124 if (update_use_sha384) {
1125 use_sha384 =
1126 wpa_key_mgmt_sha384(parse->key_mgmt);
1127 update_use_sha384 = 0;
1128 }
1129 break;
1130 case WLAN_EID_RSNX:
1131 wpa_hexdump(MSG_DEBUG, "FT: RSNXE", pos, len);
1132 if (len < 1)
1133 break;
1134 parse->rsnxe = pos;
1135 parse->rsnxe_len = len;
1136 break;
1137 case WLAN_EID_MOBILITY_DOMAIN:
1138 #ifndef EXT_CODE_CROP
1139 wpa_hexdump(MSG_DEBUG, "FT: MDE", pos, len);
1140 #endif /* EXT_CODE_CROP */
1141 if (len < sizeof(struct rsn_mdie))
1142 return -1;
1143 parse->mdie = pos;
1144 parse->mdie_len = len;
1145 break;
1146 case WLAN_EID_FAST_BSS_TRANSITION:
1147 #ifndef EXT_CODE_CROP
1148 wpa_hexdump(MSG_DEBUG, "FT: FTE", pos, len);
1149 #endif /* EXT_CODE_CROP */
1150 if (use_sha384) {
1151 const struct rsn_ftie_sha384 *ftie_sha384;
1152
1153 if (len < sizeof(*ftie_sha384))
1154 return -1;
1155 ftie_sha384 =
1156 (const struct rsn_ftie_sha384 *) pos;
1157 #ifndef EXT_CODE_CROP
1158 wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC Control",
1159 ftie_sha384->mic_control, 2);
1160 wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC",
1161 ftie_sha384->mic,
1162 sizeof(ftie_sha384->mic));
1163 parse->fte_anonce = ftie_sha384->anonce;
1164 wpa_hexdump(MSG_DEBUG, "FT: FTE-ANonce",
1165 ftie_sha384->anonce,
1166 WPA_NONCE_LEN);
1167 parse->fte_snonce = ftie_sha384->snonce;
1168 wpa_hexdump(MSG_DEBUG, "FT: FTE-SNonce",
1169 ftie_sha384->snonce,
1170 WPA_NONCE_LEN);
1171 #endif /* EXT_CODE_CROP */
1172 prot_ie_count = ftie_sha384->mic_control[1];
1173 if (wpa_ft_parse_ftie(pos, len, parse, 1) < 0)
1174 return -1;
1175 break;
1176 }
1177
1178 if (len < sizeof(*ftie))
1179 return -1;
1180 ftie = (const struct rsn_ftie *) pos;
1181 #ifndef EXT_CODE_CROP
1182 wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC Control",
1183 ftie->mic_control, 2);
1184 wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC",
1185 ftie->mic, sizeof(ftie->mic));
1186 parse->fte_anonce = ftie->anonce;
1187 wpa_hexdump(MSG_DEBUG, "FT: FTE-ANonce",
1188 ftie->anonce, WPA_NONCE_LEN);
1189 parse->fte_snonce = ftie->snonce;
1190 wpa_hexdump(MSG_DEBUG, "FT: FTE-SNonce",
1191 ftie->snonce, WPA_NONCE_LEN);
1192 #endif /* EXT_CODE_CROP */
1193 prot_ie_count = ftie->mic_control[1];
1194 if (wpa_ft_parse_ftie(pos, len, parse, 0) < 0)
1195 return -1;
1196 break;
1197 case WLAN_EID_TIMEOUT_INTERVAL:
1198 #ifndef EXT_CODE_CROP
1199 wpa_hexdump(MSG_DEBUG, "FT: Timeout Interval",
1200 pos, len);
1201 #endif /* EXT_CODE_CROP */
1202 if (len != 5)
1203 break;
1204 parse->tie = pos;
1205 parse->tie_len = len;
1206 break;
1207 case WLAN_EID_RIC_DATA:
1208 if (parse->ric == NULL)
1209 parse->ric = pos - 2;
1210 break;
1211 }
1212
1213 pos += len;
1214 }
1215
1216 if (prot_ie_count == 0)
1217 return 0; /* no MIC */
1218
1219 /*
1220 * Check that the protected IE count matches with IEs included in the
1221 * frame.
1222 */
1223 if (parse->rsn)
1224 prot_ie_count--;
1225 if (parse->mdie)
1226 prot_ie_count--;
1227 if (parse->ftie)
1228 prot_ie_count--;
1229 if (parse->rsnxe)
1230 prot_ie_count--;
1231 if (prot_ie_count < 0) {
1232 wpa_warning_log0(MSG_DEBUG, "FT: Some required IEs not included in "
1233 "the protected IE count");
1234 return -1;
1235 }
1236
1237 if (prot_ie_count == 0 && parse->ric) {
1238 wpa_warning_log0(MSG_DEBUG, "FT: RIC IE(s) in the frame, but not "
1239 "included in protected IE count");
1240 return -1;
1241 }
1242
1243 /* Determine the end of the RIC IE(s) */
1244 if (parse->ric) {
1245 pos = parse->ric;
1246 while (end - pos >= 2 && 2 + pos[1] <= end - pos &&
1247 prot_ie_count) {
1248 prot_ie_count--;
1249 pos += 2 + pos[1];
1250 }
1251 parse->ric_len = pos - parse->ric;
1252 }
1253 if (prot_ie_count) {
1254 wpa_warning_log1(MSG_DEBUG, "FT: %d protected IEs missing from "
1255 "frame", (int) prot_ie_count);
1256 return -1;
1257 }
1258
1259 return 0;
1260 }
1261 #endif /* CONFIG_IEEE80211R */
1262
1263
1264 #ifdef CONFIG_PASN
1265
1266 /*
1267 * pasn_use_sha384 - Should SHA384 be used or SHA256
1268 *
1269 * @akmp: Authentication and key management protocol
1270 * @cipher: The cipher suite
1271 *
1272 * According to IEEE P802.11az/D2.7, 12.12.7, the hash algorithm to use is the
1273 * hash algorithm defined for the Base AKM (see Table 9-151 (AKM suite
1274 * selectors)). When there is no Base AKM, the hash algorithm is selected based
1275 * on the pairwise cipher suite provided in the RSNE by the AP in the second
1276 * PASN frame. SHA-256 is used as the hash algorithm, except for the ciphers
1277 * 00-0F-AC:9 and 00-0F-AC:10 for which SHA-384 is used.
1278 */
pasn_use_sha384(int akmp,int cipher)1279 static bool pasn_use_sha384(int akmp, int cipher)
1280 {
1281 return (akmp == WPA_KEY_MGMT_PASN && (cipher == WPA_CIPHER_CCMP_256 ||
1282 cipher == WPA_CIPHER_GCMP_256)) ||
1283 wpa_key_mgmt_sha384(akmp);
1284 }
1285
1286
1287 /**
1288 * pasn_pmk_to_ptk - Calculate PASN PTK from PMK, addresses, etc.
1289 * @pmk: Pairwise master key
1290 * @pmk_len: Length of PMK
1291 * @spa: Suppplicant address
1292 * @bssid: AP BSSID
1293 * @dhss: Is the shared secret (DHss) derived from the PASN ephemeral key
1294 * exchange encoded as an octet string
1295 * @dhss_len: The length of dhss in octets
1296 * @ptk: Buffer for pairwise transient key
1297 * @akmp: Negotiated AKM
1298 * @cipher: Negotiated pairwise cipher
1299 * @kdk_len: the length in octets that should be derived for HTLK. Can be zero.
1300 * Returns: 0 on success, -1 on failure
1301 */
pasn_pmk_to_ptk(const u8 * pmk,size_t pmk_len,const u8 * spa,const u8 * bssid,const u8 * dhss,size_t dhss_len,struct wpa_ptk * ptk,int akmp,int cipher,size_t kdk_len)1302 int pasn_pmk_to_ptk(const u8 *pmk, size_t pmk_len,
1303 const u8 *spa, const u8 *bssid,
1304 const u8 *dhss, size_t dhss_len,
1305 struct wpa_ptk *ptk, int akmp, int cipher,
1306 size_t kdk_len)
1307 {
1308 u8 tmp[WPA_KCK_MAX_LEN + WPA_TK_MAX_LEN + WPA_KDK_MAX_LEN];
1309 u8 *data;
1310 size_t data_len, ptk_len;
1311 int ret = -1;
1312 const char *label = "PASN PTK Derivation";
1313
1314 if (!pmk || !pmk_len) {
1315 wpa_printf(MSG_ERROR, "PASN: No PMK set for PTK derivation");
1316 return -1;
1317 }
1318
1319 if (!dhss || !dhss_len) {
1320 wpa_printf(MSG_ERROR, "PASN: No DHss set for PTK derivation");
1321 return -1;
1322 }
1323
1324 /*
1325 * PASN-PTK = KDF(PMK, “PASN PTK Derivation”, SPA || BSSID || DHss)
1326 *
1327 * KCK = L(PASN-PTK, 0, 256)
1328 * TK = L(PASN-PTK, 256, TK_bits)
1329 * KDK = L(PASN-PTK, 256 + TK_bits, kdk_len * 8)
1330 */
1331 data_len = 2 * ETH_ALEN + dhss_len;
1332 data = os_zalloc(data_len);
1333 if (!data)
1334 return -1;
1335
1336 os_memcpy(data, spa, ETH_ALEN);
1337 os_memcpy(data + ETH_ALEN, bssid, ETH_ALEN);
1338 os_memcpy(data + 2 * ETH_ALEN, dhss, dhss_len);
1339
1340 ptk->kck_len = WPA_PASN_KCK_LEN;
1341 ptk->tk_len = wpa_cipher_key_len(cipher);
1342 ptk->kdk_len = kdk_len;
1343 ptk->kek_len = 0;
1344 ptk->kek2_len = 0;
1345 ptk->kck2_len = 0;
1346
1347 if (ptk->tk_len == 0) {
1348 wpa_printf(MSG_ERROR,
1349 "PASN: Unsupported cipher (0x%x) used in PTK derivation",
1350 cipher);
1351 goto err;
1352 }
1353
1354 ptk_len = ptk->kck_len + ptk->tk_len + ptk->kdk_len;
1355 if (ptk_len > sizeof(tmp))
1356 goto err;
1357
1358 if (pasn_use_sha384(akmp, cipher)) {
1359 wpa_printf(MSG_DEBUG, "PASN: PTK derivation using SHA384");
1360
1361 if (sha384_prf(pmk, pmk_len, label, data, data_len, tmp,
1362 ptk_len) < 0)
1363 goto err;
1364 } else {
1365 wpa_printf(MSG_DEBUG, "PASN: PTK derivation using SHA256");
1366
1367 if (sha256_prf(pmk, pmk_len, label, data, data_len, tmp,
1368 ptk_len) < 0)
1369 goto err;
1370 }
1371
1372 wpa_printf(MSG_DEBUG,
1373 "PASN: PTK derivation: SPA=" MACSTR " BSSID=" MACSTR,
1374 MAC2STR(spa), MAC2STR(bssid));
1375
1376 wpa_hexdump_key(MSG_DEBUG, "PASN: DHss", dhss, dhss_len);
1377 wpa_hexdump_key(MSG_DEBUG, "PASN: PMK", pmk, pmk_len);
1378 wpa_hexdump_key(MSG_DEBUG, "PASN: PASN-PTK", tmp, ptk_len);
1379
1380 os_memcpy(ptk->kck, tmp, WPA_PASN_KCK_LEN);
1381 wpa_hexdump_key(MSG_DEBUG, "PASN: KCK:", ptk->kck, WPA_PASN_KCK_LEN);
1382
1383 os_memcpy(ptk->tk, tmp + WPA_PASN_KCK_LEN, ptk->tk_len);
1384 wpa_hexdump_key(MSG_DEBUG, "PASN: TK:", ptk->tk, ptk->tk_len);
1385
1386 if (kdk_len) {
1387 os_memcpy(ptk->kdk, tmp + WPA_PASN_KCK_LEN + ptk->tk_len,
1388 ptk->kdk_len);
1389 wpa_hexdump_key(MSG_DEBUG, "PASN: KDK:",
1390 ptk->kdk, ptk->kdk_len);
1391 }
1392
1393 forced_memzero(tmp, sizeof(tmp));
1394 ret = 0;
1395 err:
1396 bin_clear_free(data, data_len);
1397 return ret;
1398 }
1399
1400
1401 /*
1402 * pasn_mic_len - Returns the MIC length for PASN authentication
1403 */
pasn_mic_len(int akmp,int cipher)1404 u8 pasn_mic_len(int akmp, int cipher)
1405 {
1406 if (pasn_use_sha384(akmp, cipher))
1407 return 24;
1408
1409 return 16;
1410 }
1411
1412
1413 /**
1414 * pasn_mic - Calculate PASN MIC
1415 * @kck: The key confirmation key for the PASN PTKSA
1416 * @akmp: Negotiated AKM
1417 * @cipher: Negotiated pairwise cipher
1418 * @addr1: For the 2nd PASN frame supplicant address; for the 3rd frame the
1419 * BSSID
1420 * @addr2: For the 2nd PASN frame the BSSID; for the 3rd frame the supplicant
1421 * address
1422 * @data: For calculating the MIC for the 2nd PASN frame, this should hold the
1423 * Beacon frame RSNE + RSNXE. For calculating the MIC for the 3rd PASN
1424 * frame, this should hold the hash of the body of the PASN 1st frame.
1425 * @data_len: The length of data
1426 * @frame: The body of the PASN frame including the MIC element with the octets
1427 * in the MIC field of the MIC element set to 0.
1428 * @frame_len: The length of frame
1429 * @mic: Buffer to hold the MIC on success. Should be big enough to handle the
1430 * maximal MIC length
1431 * Returns: 0 on success, -1 on failure
1432 */
pasn_mic(const u8 * kck,int akmp,int cipher,const u8 * addr1,const u8 * addr2,const u8 * data,size_t data_len,const u8 * frame,size_t frame_len,u8 * mic)1433 int pasn_mic(const u8 *kck, int akmp, int cipher,
1434 const u8 *addr1, const u8 *addr2,
1435 const u8 *data, size_t data_len,
1436 const u8 *frame, size_t frame_len, u8 *mic)
1437 {
1438 u8 *buf;
1439 u8 hash[SHA384_MAC_LEN];
1440 size_t buf_len = 2 * ETH_ALEN + data_len + frame_len;
1441 int ret = -1;
1442
1443 if (!kck) {
1444 wpa_printf(MSG_ERROR, "PASN: No KCK for MIC calculation");
1445 return -1;
1446 }
1447
1448 if (!data || !data_len) {
1449 wpa_printf(MSG_ERROR, "PASN: invalid data for MIC calculation");
1450 return -1;
1451 }
1452
1453 if (!frame || !frame_len) {
1454 wpa_printf(MSG_ERROR, "PASN: invalid data for MIC calculation");
1455 return -1;
1456 }
1457
1458 buf = os_zalloc(buf_len);
1459 if (!buf)
1460 return -1;
1461
1462 os_memcpy(buf, addr1, ETH_ALEN);
1463 os_memcpy(buf + ETH_ALEN, addr2, ETH_ALEN);
1464
1465 wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: data", data, data_len);
1466 os_memcpy(buf + 2 * ETH_ALEN, data, data_len);
1467
1468 wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: frame", frame, frame_len);
1469 os_memcpy(buf + 2 * ETH_ALEN + data_len, frame, frame_len);
1470
1471 wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: KCK", kck, WPA_PASN_KCK_LEN);
1472 wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: buf", buf, buf_len);
1473
1474 if (pasn_use_sha384(akmp, cipher)) {
1475 wpa_printf(MSG_DEBUG, "PASN: MIC using HMAC-SHA384");
1476
1477 if (hmac_sha384(kck, WPA_PASN_KCK_LEN, buf, buf_len, hash))
1478 goto err;
1479
1480 os_memcpy(mic, hash, 24);
1481 wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: mic: ", mic, 24);
1482 } else {
1483 wpa_printf(MSG_DEBUG, "PASN: MIC using HMAC-SHA256");
1484
1485 if (hmac_sha256(kck, WPA_PASN_KCK_LEN, buf, buf_len, hash))
1486 goto err;
1487
1488 os_memcpy(mic, hash, 16);
1489 wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: mic: ", mic, 16);
1490 }
1491
1492 ret = 0;
1493 err:
1494 bin_clear_free(buf, buf_len);
1495 return ret;
1496 }
1497
1498
1499 /**
1500 * pasn_auth_frame_hash - Computes a hash of an Authentication frame body
1501 * @akmp: Negotiated AKM
1502 * @cipher: Negotiated pairwise cipher
1503 * @data: Pointer to the Authentication frame body
1504 * @len: Length of the Authentication frame body
1505 * @hash: On return would hold the computed hash. Should be big enough to handle
1506 * SHA384.
1507 * Returns: 0 on success, -1 on failure
1508 */
pasn_auth_frame_hash(int akmp,int cipher,const u8 * data,size_t len,u8 * hash)1509 int pasn_auth_frame_hash(int akmp, int cipher, const u8 *data, size_t len,
1510 u8 *hash)
1511 {
1512 if (pasn_use_sha384(akmp, cipher)) {
1513 wpa_printf(MSG_DEBUG, "PASN: Frame hash using SHA-384");
1514 return sha384_vector(1, &data, &len, hash);
1515 } else {
1516 wpa_printf(MSG_DEBUG, "PASN: Frame hash using SHA-256");
1517 return sha256_vector(1, &data, &len, hash);
1518 }
1519 }
1520
1521 #endif /* CONFIG_PASN */
1522
1523
rsn_selector_to_bitfield(const u8 * s)1524 static int rsn_selector_to_bitfield(const u8 *s)
1525 {
1526 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NONE)
1527 return WPA_CIPHER_NONE;
1528 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_TKIP)
1529 return WPA_CIPHER_TKIP;
1530 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP)
1531 return WPA_CIPHER_CCMP;
1532 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_AES_128_CMAC)
1533 return WPA_CIPHER_AES_128_CMAC;
1534 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP)
1535 return WPA_CIPHER_GCMP;
1536 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP_256)
1537 return WPA_CIPHER_CCMP_256;
1538 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP_256)
1539 return WPA_CIPHER_GCMP_256;
1540 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_128)
1541 return WPA_CIPHER_BIP_GMAC_128;
1542 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_256)
1543 return WPA_CIPHER_BIP_GMAC_256;
1544 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_CMAC_256)
1545 return WPA_CIPHER_BIP_CMAC_256;
1546 if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED)
1547 return WPA_CIPHER_GTK_NOT_USED;
1548 return 0;
1549 }
1550
1551
rsn_key_mgmt_to_bitfield(const u8 * s)1552 static int rsn_key_mgmt_to_bitfield(const u8 *s)
1553 {
1554 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_UNSPEC_802_1X)
1555 return WPA_KEY_MGMT_IEEE8021X;
1556 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X)
1557 return WPA_KEY_MGMT_PSK;
1558 #ifdef CONFIG_IEEE80211R
1559 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_802_1X)
1560 return WPA_KEY_MGMT_FT_IEEE8021X;
1561 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_PSK)
1562 return WPA_KEY_MGMT_FT_PSK;
1563 #ifdef CONFIG_SHA384
1564 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_802_1X_SHA384)
1565 return WPA_KEY_MGMT_FT_IEEE8021X_SHA384;
1566 #endif /* CONFIG_SHA384 */
1567 #endif /* CONFIG_IEEE80211R */
1568 #ifdef LOS_CONFIG_WPA_ENTERPRISE
1569 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SHA256)
1570 return WPA_KEY_MGMT_IEEE8021X_SHA256;
1571 #endif /* LOS_CONFIG_WPA_ENTERPRISE */
1572 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_SHA256)
1573 return WPA_KEY_MGMT_PSK_SHA256;
1574 #ifdef CONFIG_SAE
1575 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_SAE)
1576 return WPA_KEY_MGMT_SAE;
1577 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_SAE)
1578 return WPA_KEY_MGMT_FT_SAE;
1579 #endif /* CONFIG_SAE */
1580 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B)
1581 return WPA_KEY_MGMT_IEEE8021X_SUITE_B;
1582 #if defined(CONFIG_SUITEB192) || defined (LOS_CONFIG_WPA_ENTERPRISE)
1583 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192)
1584 return WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
1585 #endif /* CONFIG_SUITEB192 || LOS_CONFIG_WPA_ENTERPRISE */
1586 #ifndef EXT_WPA_KEY_MGMT_CROP
1587 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FILS_SHA256)
1588 return WPA_KEY_MGMT_FILS_SHA256;
1589 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FILS_SHA384)
1590 return WPA_KEY_MGMT_FILS_SHA384;
1591 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_FILS_SHA256)
1592 return WPA_KEY_MGMT_FT_FILS_SHA256;
1593 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_FILS_SHA384)
1594 return WPA_KEY_MGMT_FT_FILS_SHA384;
1595 #endif /* EXT_WPA_KEY_MGMT_CROP */
1596 #ifdef CONFIG_OWE
1597 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_OWE)
1598 return WPA_KEY_MGMT_OWE;
1599 #endif /* CONFIG_OWE */
1600 #ifndef EXT_WPA_KEY_MGMT_CROP
1601 #ifdef CONFIG_DPP
1602 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_DPP)
1603 return WPA_KEY_MGMT_DPP;
1604 #endif /* CONFIG_DPP */
1605 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_OSEN)
1606 return WPA_KEY_MGMT_OSEN;
1607 #endif /* EXT_WPA_KEY_MGMT_CROP */
1608 #ifdef CONFIG_PASN
1609 if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PASN)
1610 return WPA_KEY_MGMT_PASN;
1611 #endif /* CONFIG_PASN */
1612 return 0;
1613 }
1614
1615
wpa_cipher_valid_group(int cipher)1616 int wpa_cipher_valid_group(int cipher)
1617 {
1618 return wpa_cipher_valid_pairwise(cipher) ||
1619 cipher == WPA_CIPHER_GTK_NOT_USED;
1620 }
1621
1622
wpa_cipher_valid_mgmt_group(int cipher)1623 int wpa_cipher_valid_mgmt_group(int cipher)
1624 {
1625 return cipher == WPA_CIPHER_GTK_NOT_USED ||
1626 cipher == WPA_CIPHER_AES_128_CMAC ||
1627 cipher == WPA_CIPHER_BIP_GMAC_128 ||
1628 cipher == WPA_CIPHER_BIP_GMAC_256 ||
1629 cipher == WPA_CIPHER_BIP_CMAC_256;
1630 }
1631
1632
1633 /**
1634 * wpa_parse_wpa_ie_rsn - Parse RSN IE
1635 * @rsn_ie: Buffer containing RSN IE
1636 * @rsn_ie_len: RSN IE buffer length (including IE number and length octets)
1637 * @data: Pointer to structure that will be filled in with parsed data
1638 * Returns: 0 on success, <0 on failure
1639 */
wpa_parse_wpa_ie_rsn(const u8 * rsn_ie,size_t rsn_ie_len,struct wpa_ie_data * data)1640 int wpa_parse_wpa_ie_rsn(const u8 *rsn_ie, size_t rsn_ie_len,
1641 struct wpa_ie_data *data)
1642 {
1643 const u8 *pos;
1644 int left;
1645 int i, count;
1646
1647 os_memset(data, 0, sizeof(*data));
1648 data->proto = WPA_PROTO_RSN;
1649 data->pairwise_cipher = WPA_CIPHER_CCMP;
1650 data->group_cipher = WPA_CIPHER_CCMP;
1651 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
1652 data->capabilities = 0;
1653 data->pmkid = NULL;
1654 data->num_pmkid = 0;
1655 data->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
1656
1657 if (rsn_ie_len == 0) {
1658 /* No RSN IE - fail silently */
1659 return -1;
1660 }
1661
1662 if (rsn_ie_len < sizeof(struct rsn_ie_hdr)) {
1663 #ifndef CONFIG_PRINT_NOUSE
1664 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
1665 __func__, (unsigned long) rsn_ie_len);
1666 #endif /* CONFIG_PRINT_NOUSE */
1667 return -1;
1668 }
1669
1670 if (rsn_ie_len >= 6 && rsn_ie[1] >= 4 &&
1671 rsn_ie[1] == rsn_ie_len - 2 &&
1672 WPA_GET_BE32(&rsn_ie[2]) == OSEN_IE_VENDOR_TYPE) {
1673 #ifdef CONFIG_HS20
1674 pos = rsn_ie + 6;
1675 left = rsn_ie_len - 6;
1676
1677 data->group_cipher = WPA_CIPHER_GTK_NOT_USED;
1678 data->has_group = 1;
1679 data->key_mgmt = WPA_KEY_MGMT_OSEN;
1680 data->proto = WPA_PROTO_OSEN;
1681 #else
1682 return -1;
1683 #endif /* CONFIG_HS20 */
1684 } else {
1685 const struct rsn_ie_hdr *hdr;
1686
1687 hdr = (const struct rsn_ie_hdr *) rsn_ie;
1688
1689 if (hdr->elem_id != WLAN_EID_RSN ||
1690 hdr->len != rsn_ie_len - 2 ||
1691 WPA_GET_LE16(hdr->version) != RSN_VERSION) {
1692 #ifndef CONFIG_PRINT_NOUSE
1693 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
1694 __func__);
1695 #endif /* CONFIG_PRINT_NOUSE */
1696 return -2;
1697 }
1698
1699 pos = (const u8 *) (hdr + 1);
1700 left = rsn_ie_len - sizeof(*hdr);
1701 }
1702
1703 if (left >= RSN_SELECTOR_LEN) {
1704 data->group_cipher = rsn_selector_to_bitfield(pos);
1705 data->has_group = 1;
1706 if (!wpa_cipher_valid_group(data->group_cipher)) {
1707 #ifndef CONFIG_PRINT_NOUSE
1708 wpa_printf(MSG_DEBUG,
1709 "%s: invalid group cipher 0x%x (%08x)",
1710 __func__, data->group_cipher,
1711 WPA_GET_BE32(pos));
1712 #endif /* CONFIG_PRINT_NOUSE */
1713 return -1;
1714 }
1715 pos += RSN_SELECTOR_LEN;
1716 left -= RSN_SELECTOR_LEN;
1717 } else if (left > 0) {
1718 #ifndef CONFIG_PRINT_NOUSE
1719 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
1720 __func__, left);
1721 #endif /* CONFIG_PRINT_NOUSE */
1722 return -3;
1723 }
1724
1725 if (left >= 2) {
1726 data->pairwise_cipher = 0;
1727 count = WPA_GET_LE16(pos);
1728 pos += 2;
1729 left -= 2;
1730 if (count == 0 || count > left / RSN_SELECTOR_LEN) {
1731 #ifndef CONFIG_PRINT_NOUSE
1732 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
1733 "count %u left %u", __func__, count, left);
1734 #endif /* CONFIG_PRINT_NOUSE */
1735 return -4;
1736 }
1737 if (count)
1738 data->has_pairwise = 1;
1739 for (i = 0; i < count; i++) {
1740 data->pairwise_cipher |= rsn_selector_to_bitfield(pos);
1741 pos += RSN_SELECTOR_LEN;
1742 left -= RSN_SELECTOR_LEN;
1743 }
1744 if (data->pairwise_cipher & WPA_CIPHER_AES_128_CMAC) {
1745 #ifndef CONFIG_PRINT_NOUSE
1746 wpa_printf(MSG_DEBUG, "%s: AES-128-CMAC used as "
1747 "pairwise cipher", __func__);
1748 #endif /* CONFIG_PRINT_NOUSE */
1749 return -1;
1750 }
1751 } else if (left == 1) {
1752 #ifndef CONFIG_PRINT_NOUSE
1753 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
1754 __func__);
1755 #endif /* CONFIG_PRINT_NOUSE */
1756 return -5;
1757 }
1758
1759 if (left >= 2) {
1760 data->key_mgmt = 0;
1761 count = WPA_GET_LE16(pos);
1762 pos += 2;
1763 left -= 2;
1764 if (count == 0 || count > left / RSN_SELECTOR_LEN) {
1765 #ifndef CONFIG_PRINT_NOUSE
1766 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
1767 "count %u left %u", __func__, count, left);
1768 #endif /* CONFIG_PRINT_NOUSE */
1769 return -6;
1770 }
1771 for (i = 0; i < count; i++) {
1772 data->key_mgmt |= rsn_key_mgmt_to_bitfield(pos);
1773 pos += RSN_SELECTOR_LEN;
1774 left -= RSN_SELECTOR_LEN;
1775 }
1776 } else if (left == 1) {
1777 #ifndef CONFIG_PRINT_NOUSE
1778 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
1779 __func__);
1780 #endif /* CONFIG_PRINT_NOUSE */
1781 return -7;
1782 }
1783
1784 if (left >= 2) {
1785 data->capabilities = WPA_GET_LE16(pos);
1786 pos += 2;
1787 left -= 2;
1788 }
1789
1790 if (left >= 2) {
1791 u16 num_pmkid = WPA_GET_LE16(pos);
1792 pos += 2;
1793 left -= 2;
1794 if (num_pmkid > (unsigned int) left / PMKID_LEN) {
1795 #ifndef CONFIG_PRINT_NOUSE
1796 wpa_printf(MSG_DEBUG, "%s: PMKID underflow "
1797 "(num_pmkid=%u left=%d)",
1798 __func__, num_pmkid, left);
1799 #endif /* CONFIG_PRINT_NOUSE */
1800 data->num_pmkid = 0;
1801 return -9;
1802 } else {
1803 data->num_pmkid = num_pmkid;
1804 data->pmkid = pos;
1805 pos += data->num_pmkid * PMKID_LEN;
1806 left -= data->num_pmkid * PMKID_LEN;
1807 }
1808 }
1809
1810 if (left >= 4) {
1811 data->mgmt_group_cipher = rsn_selector_to_bitfield(pos);
1812 if (!wpa_cipher_valid_mgmt_group(data->mgmt_group_cipher)) {
1813 #ifndef CONFIG_PRINT_NOUSE
1814 wpa_printf(MSG_DEBUG,
1815 "%s: Unsupported management group cipher 0x%x (%08x)",
1816 __func__, data->mgmt_group_cipher,
1817 WPA_GET_BE32(pos));
1818 #endif /* CONFIG_PRINT_NOUSE */
1819 return -10;
1820 }
1821 pos += RSN_SELECTOR_LEN;
1822 left -= RSN_SELECTOR_LEN;
1823 }
1824
1825 #ifndef EXT_CODE_CROP
1826 if (left > 0) {
1827 wpa_hexdump(MSG_DEBUG,
1828 "wpa_parse_wpa_ie_rsn: ignore trailing bytes",
1829 pos, left);
1830 }
1831 #endif /* EXT_CODE_CROP */
1832 return 0;
1833 }
1834
1835
wpa_selector_to_bitfield(const u8 * s)1836 static int wpa_selector_to_bitfield(const u8 *s)
1837 {
1838 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_NONE)
1839 return WPA_CIPHER_NONE;
1840 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_TKIP)
1841 return WPA_CIPHER_TKIP;
1842 if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_CCMP)
1843 return WPA_CIPHER_CCMP;
1844 return 0;
1845 }
1846
1847
wpa_key_mgmt_to_bitfield(const u8 * s)1848 static int wpa_key_mgmt_to_bitfield(const u8 *s)
1849 {
1850 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_UNSPEC_802_1X)
1851 return WPA_KEY_MGMT_IEEE8021X;
1852 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X)
1853 return WPA_KEY_MGMT_PSK;
1854 #ifndef EXT_WPA_KEY_MGMT_CROP
1855 if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_NONE)
1856 return WPA_KEY_MGMT_WPA_NONE;
1857 #endif /* EXT_WPA_KEY_MGMT_CROP */
1858 return 0;
1859 }
1860
1861
wpa_parse_wpa_ie_wpa(const u8 * wpa_ie,size_t wpa_ie_len,struct wpa_ie_data * data)1862 int wpa_parse_wpa_ie_wpa(const u8 *wpa_ie, size_t wpa_ie_len,
1863 struct wpa_ie_data *data)
1864 {
1865 const struct wpa_ie_hdr *hdr;
1866 const u8 *pos;
1867 int left;
1868 int i, count;
1869
1870 os_memset(data, 0, sizeof(*data));
1871 data->proto = WPA_PROTO_WPA;
1872 data->pairwise_cipher = WPA_CIPHER_TKIP;
1873 data->group_cipher = WPA_CIPHER_TKIP;
1874 data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
1875 data->capabilities = 0;
1876 data->pmkid = NULL;
1877 data->num_pmkid = 0;
1878 data->mgmt_group_cipher = 0;
1879
1880 if (wpa_ie_len < sizeof(struct wpa_ie_hdr)) {
1881 #ifndef CONFIG_PRINT_NOUSE
1882 wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
1883 __func__, (unsigned long) wpa_ie_len);
1884 #endif /* CONFIG_PRINT_NOUSE */
1885 return -1;
1886 }
1887
1888 hdr = (const struct wpa_ie_hdr *) wpa_ie;
1889
1890 if (hdr->elem_id != WLAN_EID_VENDOR_SPECIFIC ||
1891 hdr->len != wpa_ie_len - 2 ||
1892 RSN_SELECTOR_GET(hdr->oui) != WPA_OUI_TYPE ||
1893 WPA_GET_LE16(hdr->version) != WPA_VERSION) {
1894 #ifndef CONFIG_PRINT_NOUSE
1895 wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
1896 __func__);
1897 #endif /* CONFIG_PRINT_NOUSE */
1898 return -2;
1899 }
1900
1901 pos = (const u8 *) (hdr + 1);
1902 left = wpa_ie_len - sizeof(*hdr);
1903
1904 if (left >= WPA_SELECTOR_LEN) {
1905 data->group_cipher = wpa_selector_to_bitfield(pos);
1906 pos += WPA_SELECTOR_LEN;
1907 left -= WPA_SELECTOR_LEN;
1908 } else if (left > 0) {
1909 #ifndef CONFIG_PRINT_NOUSE
1910 wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
1911 __func__, left);
1912 #endif /* CONFIG_PRINT_NOUSE */
1913 return -3;
1914 }
1915
1916 if (left >= 2) {
1917 data->pairwise_cipher = 0;
1918 count = WPA_GET_LE16(pos);
1919 pos += 2;
1920 left -= 2;
1921 if (count == 0 || count > left / WPA_SELECTOR_LEN) {
1922 #ifndef CONFIG_PRINT_NOUSE
1923 wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
1924 "count %u left %u", __func__, count, left);
1925 #endif /* CONFIG_PRINT_NOUSE */
1926 return -4;
1927 }
1928 for (i = 0; i < count; i++) {
1929 data->pairwise_cipher |= wpa_selector_to_bitfield(pos);
1930 pos += WPA_SELECTOR_LEN;
1931 left -= WPA_SELECTOR_LEN;
1932 }
1933 } else if (left == 1) {
1934 #ifndef CONFIG_PRINT_NOUSE
1935 wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
1936 __func__);
1937 #endif /* CONFIG_PRINT_NOUSE */
1938 return -5;
1939 }
1940
1941 if (left >= 2) {
1942 data->key_mgmt = 0;
1943 count = WPA_GET_LE16(pos);
1944 pos += 2;
1945 left -= 2;
1946 if (count == 0 || count > left / WPA_SELECTOR_LEN) {
1947 #ifndef CONFIG_PRINT_NOUSE
1948 wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
1949 "count %u left %u", __func__, count, left);
1950 #endif /* CONFIG_PRINT_NOUSE */
1951 return -6;
1952 }
1953 for (i = 0; i < count; i++) {
1954 data->key_mgmt |= wpa_key_mgmt_to_bitfield(pos);
1955 pos += WPA_SELECTOR_LEN;
1956 left -= WPA_SELECTOR_LEN;
1957 }
1958 } else if (left == 1) {
1959 #ifndef CONFIG_PRINT_NOUSE
1960 wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
1961 __func__);
1962 #endif /* CONFIG_PRINT_NOUSE */
1963 return -7;
1964 }
1965
1966 if (left >= 2) {
1967 data->capabilities = WPA_GET_LE16(pos);
1968 pos += 2;
1969 left -= 2;
1970 }
1971
1972 #ifndef EXT_CODE_CROP
1973 if (left > 0) {
1974 wpa_hexdump(MSG_DEBUG,
1975 "wpa_parse_wpa_ie_wpa: ignore trailing bytes",
1976 pos, left);
1977 }
1978 #endif /* EXT_CODE_CROP */
1979 return 0;
1980 }
1981
1982
wpa_default_rsn_cipher(int freq)1983 int wpa_default_rsn_cipher(int freq)
1984 {
1985 if (freq > 56160)
1986 return WPA_CIPHER_GCMP; /* DMG */
1987
1988 return WPA_CIPHER_CCMP;
1989 }
1990
1991
1992 #ifdef CONFIG_IEEE80211R
1993
1994 /**
1995 * wpa_derive_pmk_r0 - Derive PMK-R0 and PMKR0Name
1996 *
1997 * IEEE Std 802.11r-2008 - 8.5.1.5.3
1998 */
wpa_derive_pmk_r0(const u8 * xxkey,size_t xxkey_len,const u8 * ssid,size_t ssid_len,const u8 * mdid,const u8 * r0kh_id,size_t r0kh_id_len,const u8 * s0kh_id,u8 * pmk_r0,u8 * pmk_r0_name,int use_sha384)1999 int wpa_derive_pmk_r0(const u8 *xxkey, size_t xxkey_len,
2000 const u8 *ssid, size_t ssid_len,
2001 const u8 *mdid, const u8 *r0kh_id, size_t r0kh_id_len,
2002 const u8 *s0kh_id, u8 *pmk_r0, u8 *pmk_r0_name,
2003 int use_sha384)
2004 {
2005 u8 buf[1 + SSID_MAX_LEN + MOBILITY_DOMAIN_ID_LEN + 1 +
2006 FT_R0KH_ID_MAX_LEN + ETH_ALEN];
2007 u8 *pos, r0_key_data[64], hash[48];
2008 const u8 *addr[2];
2009 size_t len[2];
2010 size_t q = use_sha384 ? 48 : 32;
2011 size_t r0_key_data_len = q + 16;
2012
2013 /*
2014 * R0-Key-Data = KDF-384(XXKey, "FT-R0",
2015 * SSIDlength || SSID || MDID || R0KHlength ||
2016 * R0KH-ID || S0KH-ID)
2017 * XXKey is either the second 256 bits of MSK or PSK; or the first
2018 * 384 bits of MSK for FT-EAP-SHA384.
2019 * PMK-R0 = L(R0-Key-Data, 0, Q)
2020 * PMK-R0Name-Salt = L(R0-Key-Data, Q, 128)
2021 * Q = 384 for FT-EAP-SHA384; otherwise, 256
2022 */
2023 if (ssid_len > SSID_MAX_LEN || r0kh_id_len > FT_R0KH_ID_MAX_LEN)
2024 return -1;
2025 #ifndef EXT_CODE_CROP
2026 wpa_printf(MSG_DEBUG, "FT: Derive PMK-R0 using KDF-%s",
2027 use_sha384 ? "SHA384" : "SHA256");
2028 wpa_hexdump_key(MSG_DEBUG, "FT: XXKey", xxkey, xxkey_len);
2029 wpa_hexdump_ascii(MSG_DEBUG, "FT: SSID", ssid, ssid_len);
2030 wpa_hexdump(MSG_DEBUG, "FT: MDID", mdid, MOBILITY_DOMAIN_ID_LEN);
2031 wpa_hexdump_ascii(MSG_DEBUG, "FT: R0KH-ID", r0kh_id, r0kh_id_len);
2032 wpa_printf(MSG_DEBUG, "FT: S0KH-ID: " MACSTR, MAC2STR(s0kh_id));
2033 #endif /* EXT_CODE_CROP */
2034 pos = buf;
2035 *pos++ = ssid_len;
2036 os_memcpy(pos, ssid, ssid_len);
2037 pos += ssid_len;
2038 os_memcpy(pos, mdid, MOBILITY_DOMAIN_ID_LEN);
2039 pos += MOBILITY_DOMAIN_ID_LEN;
2040 *pos++ = r0kh_id_len;
2041 os_memcpy(pos, r0kh_id, r0kh_id_len);
2042 pos += r0kh_id_len;
2043 os_memcpy(pos, s0kh_id, ETH_ALEN);
2044 pos += ETH_ALEN;
2045
2046 #ifdef CONFIG_SHA384
2047 if (use_sha384) {
2048 if (xxkey_len != SHA384_MAC_LEN) {
2049 wpa_printf(MSG_ERROR,
2050 "FT: Unexpected XXKey length %d (expected %d)",
2051 (int) xxkey_len, SHA384_MAC_LEN);
2052 return -1;
2053 }
2054 if (sha384_prf(xxkey, xxkey_len, "FT-R0", buf, pos - buf,
2055 r0_key_data, r0_key_data_len) < 0)
2056 return -1;
2057 }
2058 #endif /* CONFIG_SHA384 */
2059 if (!use_sha384) {
2060 if (xxkey_len != PMK_LEN) {
2061 wpa_printf(MSG_ERROR,
2062 "FT: Unexpected XXKey length %d (expected %d)",
2063 (int) xxkey_len, PMK_LEN);
2064 return -1;
2065 }
2066 if (sha256_prf(xxkey, xxkey_len, "FT-R0", buf, pos - buf,
2067 r0_key_data, r0_key_data_len) < 0)
2068 return -1;
2069 }
2070 os_memcpy(pmk_r0, r0_key_data, q);
2071 #ifndef EXT_CODE_CROP
2072 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, q);
2073 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0Name-Salt", &r0_key_data[q], 16);
2074 #endif /* EXT_CODE_CROP */
2075 /*
2076 * PMKR0Name = Truncate-128(Hash("FT-R0N" || PMK-R0Name-Salt)
2077 */
2078 addr[0] = (const u8 *) "FT-R0N";
2079 len[0] = 6;
2080 addr[1] = &r0_key_data[q];
2081 len[1] = 16;
2082
2083 #ifdef CONFIG_SHA384
2084 if (use_sha384 && sha384_vector(2, addr, len, hash) < 0)
2085 return -1;
2086 #endif /* CONFIG_SHA384 */
2087 if (!use_sha384 && sha256_vector(2, addr, len, hash) < 0)
2088 return -1;
2089 os_memcpy(pmk_r0_name, hash, WPA_PMK_NAME_LEN);
2090 wpa_hexdump(MSG_DEBUG, "FT: PMKR0Name", pmk_r0_name, WPA_PMK_NAME_LEN);
2091 forced_memzero(r0_key_data, sizeof(r0_key_data));
2092 return 0;
2093 }
2094
2095
2096 /**
2097 * wpa_derive_pmk_r1_name - Derive PMKR1Name
2098 *
2099 * IEEE Std 802.11r-2008 - 8.5.1.5.4
2100 */
wpa_derive_pmk_r1_name(const u8 * pmk_r0_name,const u8 * r1kh_id,const u8 * s1kh_id,u8 * pmk_r1_name,int use_sha384)2101 int wpa_derive_pmk_r1_name(const u8 *pmk_r0_name, const u8 *r1kh_id,
2102 const u8 *s1kh_id, u8 *pmk_r1_name, int use_sha384)
2103 {
2104 u8 hash[48];
2105 const u8 *addr[4];
2106 size_t len[4];
2107
2108 /*
2109 * PMKR1Name = Truncate-128(Hash("FT-R1N" || PMKR0Name ||
2110 * R1KH-ID || S1KH-ID))
2111 */
2112 addr[0] = (const u8 *) "FT-R1N";
2113 len[0] = 6;
2114 addr[1] = pmk_r0_name;
2115 len[1] = WPA_PMK_NAME_LEN;
2116 addr[2] = r1kh_id;
2117 len[2] = FT_R1KH_ID_LEN;
2118 addr[3] = s1kh_id;
2119 len[3] = ETH_ALEN;
2120
2121 #ifdef CONFIG_SHA384
2122 if (use_sha384 && sha384_vector(4, addr, len, hash) < 0)
2123 return -1;
2124 #endif /* CONFIG_SHA384 */
2125 if (!use_sha384 && sha256_vector(4, addr, len, hash) < 0)
2126 return -1;
2127 os_memcpy(pmk_r1_name, hash, WPA_PMK_NAME_LEN);
2128 wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", pmk_r1_name, WPA_PMK_NAME_LEN);
2129 return 0;
2130 }
2131
2132
2133 /**
2134 * wpa_derive_pmk_r1 - Derive PMK-R1 and PMKR1Name from PMK-R0
2135 *
2136 * IEEE Std 802.11r-2008 - 8.5.1.5.4
2137 */
wpa_derive_pmk_r1(const u8 * pmk_r0,size_t pmk_r0_len,const u8 * pmk_r0_name,const u8 * r1kh_id,const u8 * s1kh_id,u8 * pmk_r1,u8 * pmk_r1_name)2138 int wpa_derive_pmk_r1(const u8 *pmk_r0, size_t pmk_r0_len,
2139 const u8 *pmk_r0_name,
2140 const u8 *r1kh_id, const u8 *s1kh_id,
2141 u8 *pmk_r1, u8 *pmk_r1_name)
2142 {
2143 u8 buf[FT_R1KH_ID_LEN + ETH_ALEN];
2144 u8 *pos;
2145
2146 /* PMK-R1 = KDF-256(PMK-R0, "FT-R1", R1KH-ID || S1KH-ID) */
2147 #ifndef EXT_CODE_CROP
2148 wpa_printf(MSG_DEBUG, "FT: Derive PMK-R1 using KDF-%s",
2149 pmk_r0_len == SHA384_MAC_LEN ? "SHA384" : "SHA256");
2150 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, pmk_r0_len);
2151 wpa_hexdump(MSG_DEBUG, "FT: R1KH-ID", r1kh_id, FT_R1KH_ID_LEN);
2152 wpa_printf(MSG_DEBUG, "FT: S1KH-ID: " MACSTR, MAC2STR(s1kh_id));
2153 #endif /* EXT_CODE_CROP */
2154 pos = buf;
2155 os_memcpy(pos, r1kh_id, FT_R1KH_ID_LEN);
2156 pos += FT_R1KH_ID_LEN;
2157 os_memcpy(pos, s1kh_id, ETH_ALEN);
2158 pos += ETH_ALEN;
2159
2160 #ifdef CONFIG_SHA384
2161 if (pmk_r0_len == SHA384_MAC_LEN &&
2162 sha384_prf(pmk_r0, pmk_r0_len, "FT-R1",
2163 buf, pos - buf, pmk_r1, pmk_r0_len) < 0)
2164 return -1;
2165 #endif /* CONFIG_SHA384 */
2166 if (pmk_r0_len == PMK_LEN &&
2167 sha256_prf(pmk_r0, pmk_r0_len, "FT-R1",
2168 buf, pos - buf, pmk_r1, pmk_r0_len) < 0)
2169 return -1;
2170 if (pmk_r0_len != SHA384_MAC_LEN && pmk_r0_len != PMK_LEN) {
2171 wpa_error_log1(MSG_ERROR, "FT: Unexpected PMK-R0 length %d",
2172 (int) pmk_r0_len);
2173 return -1;
2174 }
2175 #ifndef EXT_CODE_CROP
2176 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, pmk_r0_len);
2177 #endif /* EXT_CODE_CROP */
2178 return wpa_derive_pmk_r1_name(pmk_r0_name, r1kh_id, s1kh_id,
2179 pmk_r1_name,
2180 pmk_r0_len == SHA384_MAC_LEN);
2181 }
2182
2183
2184 /**
2185 * wpa_pmk_r1_to_ptk - Derive PTK and PTKName from PMK-R1
2186 *
2187 * IEEE Std 802.11r-2008 - 8.5.1.5.5
2188 */
wpa_pmk_r1_to_ptk(const u8 * pmk_r1,size_t pmk_r1_len,const u8 * snonce,const u8 * anonce,const u8 * sta_addr,const u8 * bssid,const u8 * pmk_r1_name,struct wpa_ptk * ptk,u8 * ptk_name,int akmp,int cipher,size_t kdk_len)2189 int wpa_pmk_r1_to_ptk(const u8 *pmk_r1, size_t pmk_r1_len,
2190 const u8 *snonce, const u8 *anonce,
2191 const u8 *sta_addr, const u8 *bssid,
2192 const u8 *pmk_r1_name,
2193 struct wpa_ptk *ptk, u8 *ptk_name, int akmp, int cipher,
2194 size_t kdk_len)
2195 {
2196 u8 buf[2 * WPA_NONCE_LEN + 2 * ETH_ALEN];
2197 u8 *pos, hash[32];
2198 const u8 *addr[6];
2199 size_t len[6];
2200 u8 tmp[2 * WPA_KCK_MAX_LEN + 2 * WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN +
2201 WPA_KDK_MAX_LEN];
2202 size_t ptk_len, offset;
2203 int use_sha384 = wpa_key_mgmt_sha384(akmp);
2204
2205 if (kdk_len > WPA_KDK_MAX_LEN) {
2206 wpa_printf(MSG_ERROR,
2207 "FT: KDK len=%zu exceeds max supported len",
2208 kdk_len);
2209 return -1;
2210 }
2211
2212 /*
2213 * PTK = KDF-PTKLen(PMK-R1, "FT-PTK", SNonce || ANonce ||
2214 * BSSID || STA-ADDR)
2215 */
2216 #ifndef EXT_CODE_CROP
2217 wpa_printf(MSG_DEBUG, "FT: Derive PTK using KDF-%s",
2218 use_sha384 ? "SHA384" : "SHA256");
2219 wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, pmk_r1_len);
2220 wpa_hexdump(MSG_DEBUG, "FT: SNonce", snonce, WPA_NONCE_LEN);
2221 wpa_hexdump(MSG_DEBUG, "FT: ANonce", anonce, WPA_NONCE_LEN);
2222 wpa_printf(MSG_DEBUG, "FT: BSSID=" MACSTR " STA-ADDR=" MACSTR,
2223 MAC2STR(bssid), MAC2STR(sta_addr));
2224 #endif /* EXT_CODE_CROP */
2225 pos = buf;
2226 os_memcpy(pos, snonce, WPA_NONCE_LEN);
2227 pos += WPA_NONCE_LEN;
2228 os_memcpy(pos, anonce, WPA_NONCE_LEN);
2229 pos += WPA_NONCE_LEN;
2230 os_memcpy(pos, bssid, ETH_ALEN);
2231 pos += ETH_ALEN;
2232 os_memcpy(pos, sta_addr, ETH_ALEN);
2233 pos += ETH_ALEN;
2234
2235 ptk->kck_len = wpa_kck_len(akmp, PMK_LEN);
2236 ptk->kck2_len = wpa_kck2_len(akmp);
2237 ptk->kek_len = wpa_kek_len(akmp, PMK_LEN);
2238 ptk->kek2_len = wpa_kek2_len(akmp);
2239 ptk->tk_len = wpa_cipher_key_len(cipher);
2240 ptk->kdk_len = kdk_len;
2241 ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len +
2242 ptk->kck2_len + ptk->kek2_len + ptk->kdk_len;
2243
2244 #ifdef CONFIG_SHA384
2245 if (use_sha384) {
2246 if (pmk_r1_len != SHA384_MAC_LEN) {
2247 wpa_printf(MSG_ERROR,
2248 "FT: Unexpected PMK-R1 length %d (expected %d)",
2249 (int) pmk_r1_len, SHA384_MAC_LEN);
2250 return -1;
2251 }
2252 if (sha384_prf(pmk_r1, pmk_r1_len, "FT-PTK",
2253 buf, pos - buf, tmp, ptk_len) < 0)
2254 return -1;
2255 }
2256 #endif /* CONFIG_SHA384 */
2257 if (!use_sha384) {
2258 if (pmk_r1_len != PMK_LEN) {
2259 wpa_printf(MSG_ERROR,
2260 "FT: Unexpected PMK-R1 length %d (expected %d)",
2261 (int) pmk_r1_len, PMK_LEN);
2262 return -1;
2263 }
2264 if (sha256_prf(pmk_r1, pmk_r1_len, "FT-PTK",
2265 buf, pos - buf, tmp, ptk_len) < 0)
2266 return -1;
2267 }
2268 #ifndef EXT_CODE_CROP
2269 wpa_hexdump_key(MSG_DEBUG, "FT: PTK", tmp, ptk_len);
2270 #endif /* EXT_CODE_CROP */
2271 /*
2272 * PTKName = Truncate-128(SHA-256(PMKR1Name || "FT-PTKN" || SNonce ||
2273 * ANonce || BSSID || STA-ADDR))
2274 */
2275 #ifndef EXT_CODE_CROP
2276 wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", pmk_r1_name, WPA_PMK_NAME_LEN);
2277 #endif /* EXT_CODE_CROP */
2278 addr[0] = pmk_r1_name;
2279 len[0] = WPA_PMK_NAME_LEN;
2280 addr[1] = (const u8 *) "FT-PTKN";
2281 len[1] = 7;
2282 addr[2] = snonce;
2283 len[2] = WPA_NONCE_LEN;
2284 addr[3] = anonce;
2285 len[3] = WPA_NONCE_LEN;
2286 addr[4] = bssid;
2287 len[4] = ETH_ALEN;
2288 addr[5] = sta_addr;
2289 len[5] = ETH_ALEN;
2290
2291 if (sha256_vector(6, addr, len, hash) < 0)
2292 return -1;
2293 os_memcpy(ptk_name, hash, WPA_PMK_NAME_LEN);
2294
2295 os_memcpy(ptk->kck, tmp, ptk->kck_len);
2296 offset = ptk->kck_len;
2297 os_memcpy(ptk->kek, tmp + offset, ptk->kek_len);
2298 offset += ptk->kek_len;
2299 os_memcpy(ptk->tk, tmp + offset, ptk->tk_len);
2300 offset += ptk->tk_len;
2301 os_memcpy(ptk->kck2, tmp + offset, ptk->kck2_len);
2302 offset += ptk->kck2_len;
2303 os_memcpy(ptk->kek2, tmp + offset, ptk->kek2_len);
2304 offset += ptk->kek2_len;
2305 os_memcpy(ptk->kdk, tmp + offset, ptk->kdk_len);
2306
2307 wpa_hexdump_key(MSG_DEBUG, "FT: KCK", ptk->kck, ptk->kck_len);
2308 wpa_hexdump_key(MSG_DEBUG, "FT: KEK", ptk->kek, ptk->kek_len);
2309 if (ptk->kck2_len)
2310 wpa_hexdump_key(MSG_DEBUG, "FT: KCK2",
2311 ptk->kck2, ptk->kck2_len);
2312 if (ptk->kek2_len)
2313 wpa_hexdump_key(MSG_DEBUG, "FT: KEK2",
2314 ptk->kek2, ptk->kek2_len);
2315 if (ptk->kdk_len)
2316 wpa_hexdump_key(MSG_DEBUG, "FT: KDK", ptk->kdk, ptk->kdk_len);
2317
2318 wpa_hexdump_key(MSG_DEBUG, "FT: TK", ptk->tk, ptk->tk_len);
2319 wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN);
2320
2321 forced_memzero(tmp, sizeof(tmp));
2322
2323 return 0;
2324 }
2325
2326 #endif /* CONFIG_IEEE80211R */
2327
2328
2329 /**
2330 * rsn_pmkid - Calculate PMK identifier
2331 * @pmk: Pairwise master key
2332 * @pmk_len: Length of pmk in bytes
2333 * @aa: Authenticator address
2334 * @spa: Supplicant address
2335 * @pmkid: Buffer for PMKID
2336 * @akmp: Negotiated key management protocol
2337 *
2338 * IEEE Std 802.11-2016 - 12.7.1.3 Pairwise key hierarchy
2339 * AKM: 00-0F-AC:5, 00-0F-AC:6, 00-0F-AC:14, 00-0F-AC:16
2340 * PMKID = Truncate-128(HMAC-SHA-256(PMK, "PMK Name" || AA || SPA))
2341 * AKM: 00-0F-AC:11
2342 * See rsn_pmkid_suite_b()
2343 * AKM: 00-0F-AC:12
2344 * See rsn_pmkid_suite_b_192()
2345 * AKM: 00-0F-AC:13, 00-0F-AC:15, 00-0F-AC:17
2346 * PMKID = Truncate-128(HMAC-SHA-384(PMK, "PMK Name" || AA || SPA))
2347 * Otherwise:
2348 * PMKID = Truncate-128(HMAC-SHA-1(PMK, "PMK Name" || AA || SPA))
2349 */
rsn_pmkid(const u8 * pmk,size_t pmk_len,const u8 * aa,const u8 * spa,u8 * pmkid,int akmp)2350 void rsn_pmkid(const u8 *pmk, size_t pmk_len, const u8 *aa, const u8 *spa,
2351 u8 *pmkid, int akmp)
2352 {
2353 char *title = "PMK Name";
2354 const u8 *addr[3];
2355 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
2356 unsigned char hash[SHA384_MAC_LEN];
2357
2358 addr[0] = (u8 *) title;
2359 addr[1] = aa;
2360 addr[2] = spa;
2361
2362 if (0) {
2363 #if defined(CONFIG_FILS) || defined(CONFIG_SHA384)
2364 } else if (wpa_key_mgmt_sha384(akmp)) {
2365 wpa_warning_log0(MSG_DEBUG, "RSN: Derive PMKID using HMAC-SHA-384");
2366 hmac_sha384_vector(pmk, pmk_len, 3, addr, len, hash);
2367 #endif /* CONFIG_FILS || CONFIG_SHA384 */
2368 } else if (wpa_key_mgmt_sha256(akmp)) {
2369 wpa_warning_log0(MSG_DEBUG, "RSN: Derive PMKID using HMAC-SHA-256");
2370 hmac_sha256_vector(pmk, pmk_len, 3, addr, len, hash);
2371 } else {
2372 wpa_warning_log0(MSG_DEBUG, "RSN: Derive PMKID using HMAC-SHA-1");
2373 hmac_sha1_vector(pmk, pmk_len, 3, addr, len, hash);
2374 }
2375 wpa_hexdump(MSG_DEBUG, "RSN: Derived PMKID", hash, PMKID_LEN);
2376 os_memcpy(pmkid, hash, PMKID_LEN);
2377 }
2378
2379
2380 #ifdef CONFIG_SUITEB
2381 /**
2382 * rsn_pmkid_suite_b - Calculate PMK identifier for Suite B AKM
2383 * @kck: Key confirmation key
2384 * @kck_len: Length of kck in bytes
2385 * @aa: Authenticator address
2386 * @spa: Supplicant address
2387 * @pmkid: Buffer for PMKID
2388 * Returns: 0 on success, -1 on failure
2389 *
2390 * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
2391 * PMKID = Truncate(HMAC-SHA-256(KCK, "PMK Name" || AA || SPA))
2392 */
rsn_pmkid_suite_b(const u8 * kck,size_t kck_len,const u8 * aa,const u8 * spa,u8 * pmkid)2393 int rsn_pmkid_suite_b(const u8 *kck, size_t kck_len, const u8 *aa,
2394 const u8 *spa, u8 *pmkid)
2395 {
2396 char *title = "PMK Name";
2397 const u8 *addr[3];
2398 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
2399 unsigned char hash[SHA256_MAC_LEN];
2400
2401 addr[0] = (u8 *) title;
2402 addr[1] = aa;
2403 addr[2] = spa;
2404
2405 if (hmac_sha256_vector(kck, kck_len, 3, addr, len, hash) < 0)
2406 return -1;
2407 os_memcpy(pmkid, hash, PMKID_LEN);
2408 return 0;
2409 }
2410 #endif /* CONFIG_SUITEB */
2411
2412
2413 #ifdef CONFIG_SUITEB192
2414 /**
2415 * rsn_pmkid_suite_b_192 - Calculate PMK identifier for Suite B AKM
2416 * @kck: Key confirmation key
2417 * @kck_len: Length of kck in bytes
2418 * @aa: Authenticator address
2419 * @spa: Supplicant address
2420 * @pmkid: Buffer for PMKID
2421 * Returns: 0 on success, -1 on failure
2422 *
2423 * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
2424 * PMKID = Truncate(HMAC-SHA-384(KCK, "PMK Name" || AA || SPA))
2425 */
rsn_pmkid_suite_b_192(const u8 * kck,size_t kck_len,const u8 * aa,const u8 * spa,u8 * pmkid)2426 int rsn_pmkid_suite_b_192(const u8 *kck, size_t kck_len, const u8 *aa,
2427 const u8 *spa, u8 *pmkid)
2428 {
2429 char *title = "PMK Name";
2430 const u8 *addr[3];
2431 const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
2432 unsigned char hash[SHA384_MAC_LEN];
2433
2434 addr[0] = (u8 *) title;
2435 addr[1] = aa;
2436 addr[2] = spa;
2437
2438 if (hmac_sha384_vector(kck, kck_len, 3, addr, len, hash) < 0)
2439 return -1;
2440 os_memcpy(pmkid, hash, PMKID_LEN);
2441 return 0;
2442 }
2443 #endif /* CONFIG_SUITEB192 */
2444
2445 #ifdef CONFIG_WPA_DUMP_DEBUG
2446 /**
2447 * wpa_cipher_txt - Convert cipher suite to a text string
2448 * @cipher: Cipher suite (WPA_CIPHER_* enum)
2449 * Returns: Pointer to a text string of the cipher suite name
2450 */
wpa_cipher_txt(int cipher)2451 const char * wpa_cipher_txt(int cipher)
2452 {
2453 switch (cipher) {
2454 case WPA_CIPHER_NONE:
2455 return "NONE";
2456 #ifdef CONFIG_WEP
2457 case WPA_CIPHER_WEP40:
2458 return "WEP-40";
2459 case WPA_CIPHER_WEP104:
2460 return "WEP-104";
2461 #endif /* CONFIG_WEP */
2462 case WPA_CIPHER_TKIP:
2463 return "TKIP";
2464 case WPA_CIPHER_CCMP:
2465 return "CCMP";
2466 case WPA_CIPHER_CCMP | WPA_CIPHER_TKIP:
2467 return "CCMP+TKIP";
2468 case WPA_CIPHER_GCMP:
2469 return "GCMP";
2470 case WPA_CIPHER_GCMP_256:
2471 return "GCMP-256";
2472 case WPA_CIPHER_CCMP_256:
2473 return "CCMP-256";
2474 case WPA_CIPHER_AES_128_CMAC:
2475 return "BIP";
2476 case WPA_CIPHER_BIP_GMAC_128:
2477 return "BIP-GMAC-128";
2478 case WPA_CIPHER_BIP_GMAC_256:
2479 return "BIP-GMAC-256";
2480 case WPA_CIPHER_BIP_CMAC_256:
2481 return "BIP-CMAC-256";
2482 case WPA_CIPHER_GTK_NOT_USED:
2483 return "GTK_NOT_USED";
2484 default:
2485 return "UNKNOWN";
2486 }
2487 }
2488 #endif /* CONFIG_WPA_DUMP_DEBUG */
2489
2490 /**
2491 * wpa_key_mgmt_txt - Convert key management suite to a text string
2492 * @key_mgmt: Key management suite (WPA_KEY_MGMT_* enum)
2493 * @proto: WPA/WPA2 version (WPA_PROTO_*)
2494 * Returns: Pointer to a text string of the key management suite name
2495 */
wpa_key_mgmt_txt(int key_mgmt,int proto)2496 const char * wpa_key_mgmt_txt(int key_mgmt, int proto)
2497 {
2498 switch (key_mgmt) {
2499 #ifndef EXT_CODE_CROP
2500 case WPA_KEY_MGMT_IEEE8021X:
2501 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
2502 return "WPA2+WPA/IEEE 802.1X/EAP";
2503 return proto == WPA_PROTO_RSN ?
2504 "WPA2/IEEE 802.1X/EAP" : "WPA/IEEE 802.1X/EAP";
2505 case WPA_KEY_MGMT_PSK:
2506 if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
2507 return "WPA2-PSK+WPA-PSK";
2508 return proto == WPA_PROTO_RSN ?
2509 "WPA2-PSK" : "WPA-PSK";
2510 case WPA_KEY_MGMT_NONE:
2511 return "NONE";
2512 case WPA_KEY_MGMT_WPA_NONE:
2513 return "WPA-NONE";
2514 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
2515 return "IEEE 802.1X (no WPA)";
2516 #endif /* EXT_CODE_CROP */
2517 #ifdef CONFIG_IEEE80211R
2518 case WPA_KEY_MGMT_FT_IEEE8021X:
2519 return "FT-EAP";
2520 case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
2521 return "FT-EAP-SHA384";
2522 case WPA_KEY_MGMT_FT_PSK:
2523 return "FT-PSK";
2524 #endif /* CONFIG_IEEE80211R */
2525 #ifndef EXT_CODE_CROP
2526 case WPA_KEY_MGMT_IEEE8021X_SHA256:
2527 return "WPA2-EAP-SHA256";
2528 case WPA_KEY_MGMT_PSK_SHA256:
2529 return "WPA2-PSK-SHA256";
2530 case WPA_KEY_MGMT_WPS:
2531 return "WPS";
2532 case WPA_KEY_MGMT_SAE:
2533 return "SAE";
2534 case WPA_KEY_MGMT_FT_SAE:
2535 return "FT-SAE";
2536 case WPA_KEY_MGMT_OSEN:
2537 return "OSEN";
2538 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
2539 return "WPA2-EAP-SUITE-B";
2540 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
2541 return "WPA2-EAP-SUITE-B-192";
2542 case WPA_KEY_MGMT_FILS_SHA256:
2543 return "FILS-SHA256";
2544 case WPA_KEY_MGMT_FILS_SHA384:
2545 return "FILS-SHA384";
2546 case WPA_KEY_MGMT_FT_FILS_SHA256:
2547 return "FT-FILS-SHA256";
2548 case WPA_KEY_MGMT_FT_FILS_SHA384:
2549 return "FT-FILS-SHA384";
2550 case WPA_KEY_MGMT_OWE:
2551 return "OWE";
2552 case WPA_KEY_MGMT_DPP:
2553 return "DPP";
2554 case WPA_KEY_MGMT_PASN:
2555 return "PASN";
2556 #endif /* EXT_CODE_CROP */
2557 default:
2558 return "UNKNOWN";
2559 }
2560 }
2561
2562
wpa_akm_to_suite(int akm)2563 u32 wpa_akm_to_suite(int akm)
2564 {
2565 #ifndef EXT_WPA_KEY_MGMT_CROP
2566 if (akm & WPA_KEY_MGMT_FT_IEEE8021X_SHA384)
2567 return RSN_AUTH_KEY_MGMT_FT_802_1X_SHA384;
2568 if (akm & WPA_KEY_MGMT_FT_IEEE8021X)
2569 return RSN_AUTH_KEY_MGMT_FT_802_1X;
2570 if (akm & WPA_KEY_MGMT_FT_PSK)
2571 return RSN_AUTH_KEY_MGMT_FT_PSK;
2572 if (akm & WPA_KEY_MGMT_IEEE8021X_SHA256)
2573 return RSN_AUTH_KEY_MGMT_802_1X_SHA256;
2574 if (akm & WPA_KEY_MGMT_IEEE8021X)
2575 return RSN_AUTH_KEY_MGMT_UNSPEC_802_1X;
2576 #endif /* EXT_WPA_KEY_MGMT_CROP */
2577 if (akm & WPA_KEY_MGMT_PSK_SHA256)
2578 return RSN_AUTH_KEY_MGMT_PSK_SHA256;
2579 if (akm & WPA_KEY_MGMT_PSK)
2580 return RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X;
2581 #ifndef EXT_WPA_KEY_MGMT_CROP
2582 if (akm & WPA_KEY_MGMT_CCKM)
2583 return RSN_AUTH_KEY_MGMT_CCKM;
2584 if (akm & WPA_KEY_MGMT_OSEN)
2585 return RSN_AUTH_KEY_MGMT_OSEN;
2586 if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B)
2587 return RSN_AUTH_KEY_MGMT_802_1X_SUITE_B;
2588 if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
2589 return RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192;
2590 if (akm & WPA_KEY_MGMT_FILS_SHA256)
2591 return RSN_AUTH_KEY_MGMT_FILS_SHA256;
2592 if (akm & WPA_KEY_MGMT_FILS_SHA384)
2593 return RSN_AUTH_KEY_MGMT_FILS_SHA384;
2594 if (akm & WPA_KEY_MGMT_FT_FILS_SHA256)
2595 return RSN_AUTH_KEY_MGMT_FT_FILS_SHA256;
2596 if (akm & WPA_KEY_MGMT_FT_FILS_SHA384)
2597 return RSN_AUTH_KEY_MGMT_FT_FILS_SHA384;
2598 if (akm & WPA_KEY_MGMT_SAE)
2599 return RSN_AUTH_KEY_MGMT_SAE;
2600 if (akm & WPA_KEY_MGMT_FT_SAE)
2601 return RSN_AUTH_KEY_MGMT_FT_SAE;
2602 #endif /* EXT_WPA_KEY_MGMT_CROP */
2603 if (akm & WPA_KEY_MGMT_OWE)
2604 return RSN_AUTH_KEY_MGMT_OWE;
2605 #ifndef EXT_WPA_KEY_MGMT_CROP
2606 if (akm & WPA_KEY_MGMT_DPP)
2607 return RSN_AUTH_KEY_MGMT_DPP;
2608 #endif /* EXT_WPA_KEY_MGMT_CROP */
2609 return 0;
2610 }
2611
2612
wpa_compare_rsn_ie(int ft_initial_assoc,const u8 * ie1,size_t ie1len,const u8 * ie2,size_t ie2len)2613 int wpa_compare_rsn_ie(int ft_initial_assoc,
2614 const u8 *ie1, size_t ie1len,
2615 const u8 *ie2, size_t ie2len)
2616 {
2617 if (ie1 == NULL || ie2 == NULL)
2618 return -1;
2619
2620 if (ie1len == ie2len && os_memcmp(ie1, ie2, ie1len) == 0)
2621 return 0; /* identical IEs */
2622
2623 #ifdef CONFIG_IEEE80211R
2624 if (ft_initial_assoc) {
2625 struct wpa_ie_data ie1d, ie2d;
2626 /*
2627 * The PMKID-List in RSN IE is different between Beacon/Probe
2628 * Response/(Re)Association Request frames and EAPOL-Key
2629 * messages in FT initial mobility domain association. Allow
2630 * for this, but verify that other parts of the RSN IEs are
2631 * identical.
2632 */
2633 if (wpa_parse_wpa_ie_rsn(ie1, ie1len, &ie1d) < 0 ||
2634 wpa_parse_wpa_ie_rsn(ie2, ie2len, &ie2d) < 0)
2635 return -1;
2636 if (ie1d.proto == ie2d.proto &&
2637 ie1d.pairwise_cipher == ie2d.pairwise_cipher &&
2638 ie1d.group_cipher == ie2d.group_cipher &&
2639 ie1d.key_mgmt == ie2d.key_mgmt &&
2640 ie1d.capabilities == ie2d.capabilities &&
2641 ie1d.mgmt_group_cipher == ie2d.mgmt_group_cipher)
2642 return 0;
2643 }
2644 #endif /* CONFIG_IEEE80211R */
2645
2646 return -1;
2647 }
2648
2649
wpa_insert_pmkid(u8 * ies,size_t * ies_len,const u8 * pmkid)2650 int wpa_insert_pmkid(u8 *ies, size_t *ies_len, const u8 *pmkid)
2651 {
2652 u8 *start, *end, *rpos, *rend;
2653 int added = 0;
2654
2655 start = ies;
2656 end = ies + *ies_len;
2657
2658 while (start < end) {
2659 if (*start == WLAN_EID_RSN)
2660 break;
2661 start += 2 + start[1];
2662 }
2663 if (start >= end) {
2664 wpa_error_log0(MSG_ERROR, "FT: Could not find RSN IE in "
2665 "IEs data");
2666 return -1;
2667 }
2668 wpa_hexdump(MSG_DEBUG, "RSN: RSNE before modification",
2669 start, 2 + start[1]);
2670
2671 /* Find start of PMKID-Count */
2672 rpos = start + 2;
2673 rend = rpos + start[1];
2674
2675 /* Skip Version and Group Data Cipher Suite */
2676 rpos += 2 + 4;
2677 /* Skip Pairwise Cipher Suite Count and List */
2678 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
2679 /* Skip AKM Suite Count and List */
2680 rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
2681
2682 if (rpos == rend) {
2683 /* Add RSN Capabilities */
2684 os_memmove(rpos + 2, rpos, end - rpos);
2685 *rpos++ = 0;
2686 *rpos++ = 0;
2687 added += 2;
2688 start[1] += 2;
2689 rend = rpos;
2690 } else {
2691 /* Skip RSN Capabilities */
2692 rpos += 2;
2693 if (rpos > rend) {
2694 wpa_error_log0(MSG_ERROR, "FT: Could not parse RSN IE in "
2695 "IEs data");
2696 return -1;
2697 }
2698 }
2699
2700 if (rpos == rend) {
2701 /* No PMKID-Count field included; add it */
2702 os_memmove(rpos + 2 + PMKID_LEN, rpos, end + added - rpos);
2703 WPA_PUT_LE16(rpos, 1);
2704 rpos += 2;
2705 os_memcpy(rpos, pmkid, PMKID_LEN);
2706 added += 2 + PMKID_LEN;
2707 start[1] += 2 + PMKID_LEN;
2708 } else {
2709 u16 num_pmkid;
2710
2711 if (rend - rpos < 2)
2712 return -1;
2713 num_pmkid = WPA_GET_LE16(rpos);
2714 /* PMKID-Count was included; use it */
2715 if (num_pmkid != 0) {
2716 u8 *after;
2717
2718 if (num_pmkid * PMKID_LEN > rend - rpos - 2)
2719 return -1;
2720 /*
2721 * PMKID may have been included in RSN IE in
2722 * (Re)Association Request frame, so remove the old
2723 * PMKID(s) first before adding the new one.
2724 */
2725 wpa_printf(MSG_DEBUG,
2726 "RSN: Remove %u old PMKID(s) from RSNE",
2727 num_pmkid);
2728 after = rpos + 2 + num_pmkid * PMKID_LEN;
2729 os_memmove(rpos + 2, after, end - after);
2730 start[1] -= num_pmkid * PMKID_LEN;
2731 added -= num_pmkid * PMKID_LEN;
2732 }
2733 WPA_PUT_LE16(rpos, 1);
2734 rpos += 2;
2735 os_memmove(rpos + PMKID_LEN, rpos, end + added - rpos);
2736 os_memcpy(rpos, pmkid, PMKID_LEN);
2737 added += PMKID_LEN;
2738 start[1] += PMKID_LEN;
2739 }
2740
2741 wpa_hexdump(MSG_DEBUG, "RSN: RSNE after modification (PMKID inserted)",
2742 start, 2 + start[1]);
2743
2744 *ies_len += added;
2745
2746 return 0;
2747 }
2748
2749
wpa_cipher_key_len(int cipher)2750 int wpa_cipher_key_len(int cipher)
2751 {
2752 switch (cipher) {
2753 case WPA_CIPHER_CCMP_256:
2754 case WPA_CIPHER_GCMP_256:
2755 case WPA_CIPHER_BIP_GMAC_256:
2756 case WPA_CIPHER_BIP_CMAC_256:
2757 return 32;
2758 case WPA_CIPHER_CCMP:
2759 case WPA_CIPHER_GCMP:
2760 case WPA_CIPHER_AES_128_CMAC:
2761 case WPA_CIPHER_BIP_GMAC_128:
2762 return 16;
2763 case WPA_CIPHER_TKIP:
2764 return 32;
2765 }
2766
2767 return 0;
2768 }
2769
2770
wpa_cipher_rsc_len(int cipher)2771 int wpa_cipher_rsc_len(int cipher)
2772 {
2773 switch (cipher) {
2774 case WPA_CIPHER_CCMP_256:
2775 case WPA_CIPHER_GCMP_256:
2776 case WPA_CIPHER_CCMP:
2777 case WPA_CIPHER_GCMP:
2778 case WPA_CIPHER_TKIP:
2779 return 6;
2780 }
2781
2782 return 0;
2783 }
2784
2785
wpa_cipher_to_alg(int cipher)2786 enum wpa_alg wpa_cipher_to_alg(int cipher)
2787 {
2788 switch (cipher) {
2789 case WPA_CIPHER_CCMP_256:
2790 return WPA_ALG_CCMP_256;
2791 case WPA_CIPHER_GCMP_256:
2792 return WPA_ALG_GCMP_256;
2793 case WPA_CIPHER_CCMP:
2794 return WPA_ALG_CCMP;
2795 case WPA_CIPHER_GCMP:
2796 return WPA_ALG_GCMP;
2797 case WPA_CIPHER_TKIP:
2798 return WPA_ALG_TKIP;
2799 case WPA_CIPHER_AES_128_CMAC:
2800 return WPA_ALG_BIP_CMAC_128;
2801 case WPA_CIPHER_BIP_GMAC_128:
2802 return WPA_ALG_BIP_GMAC_128;
2803 case WPA_CIPHER_BIP_GMAC_256:
2804 return WPA_ALG_BIP_GMAC_256;
2805 case WPA_CIPHER_BIP_CMAC_256:
2806 return WPA_ALG_BIP_CMAC_256;
2807 }
2808 return WPA_ALG_NONE;
2809 }
2810
2811
wpa_cipher_valid_pairwise(int cipher)2812 int wpa_cipher_valid_pairwise(int cipher)
2813 {
2814 #ifdef CONFIG_NO_TKIP
2815 return cipher == WPA_CIPHER_CCMP_256 ||
2816 cipher == WPA_CIPHER_GCMP_256 ||
2817 cipher == WPA_CIPHER_CCMP ||
2818 cipher == WPA_CIPHER_GCMP;
2819 #else /* CONFIG_NO_TKIP */
2820 return cipher == WPA_CIPHER_CCMP_256 ||
2821 cipher == WPA_CIPHER_GCMP_256 ||
2822 cipher == WPA_CIPHER_CCMP ||
2823 cipher == WPA_CIPHER_GCMP ||
2824 cipher == WPA_CIPHER_TKIP;
2825 #endif /* CONFIG_NO_TKIP */
2826 }
2827
2828
wpa_cipher_to_suite(int proto,int cipher)2829 u32 wpa_cipher_to_suite(int proto, int cipher)
2830 {
2831 if (cipher & WPA_CIPHER_CCMP_256)
2832 return RSN_CIPHER_SUITE_CCMP_256;
2833 if (cipher & WPA_CIPHER_GCMP_256)
2834 return RSN_CIPHER_SUITE_GCMP_256;
2835 if (cipher & WPA_CIPHER_CCMP)
2836 return (proto == WPA_PROTO_RSN ?
2837 RSN_CIPHER_SUITE_CCMP : WPA_CIPHER_SUITE_CCMP);
2838 if (cipher & WPA_CIPHER_GCMP)
2839 return RSN_CIPHER_SUITE_GCMP;
2840 if (cipher & WPA_CIPHER_TKIP)
2841 return (proto == WPA_PROTO_RSN ?
2842 RSN_CIPHER_SUITE_TKIP : WPA_CIPHER_SUITE_TKIP);
2843 if (cipher & WPA_CIPHER_NONE)
2844 return (proto == WPA_PROTO_RSN ?
2845 RSN_CIPHER_SUITE_NONE : WPA_CIPHER_SUITE_NONE);
2846 if (cipher & WPA_CIPHER_GTK_NOT_USED)
2847 return RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED;
2848 if (cipher & WPA_CIPHER_AES_128_CMAC)
2849 return RSN_CIPHER_SUITE_AES_128_CMAC;
2850 if (cipher & WPA_CIPHER_BIP_GMAC_128)
2851 return RSN_CIPHER_SUITE_BIP_GMAC_128;
2852 if (cipher & WPA_CIPHER_BIP_GMAC_256)
2853 return RSN_CIPHER_SUITE_BIP_GMAC_256;
2854 if (cipher & WPA_CIPHER_BIP_CMAC_256)
2855 return RSN_CIPHER_SUITE_BIP_CMAC_256;
2856 return 0;
2857 }
2858
2859
rsn_cipher_put_suites(u8 * start,int ciphers)2860 int rsn_cipher_put_suites(u8 *start, int ciphers)
2861 {
2862 u8 *pos = start;
2863
2864 if (ciphers & WPA_CIPHER_CCMP_256) {
2865 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP_256);
2866 pos += RSN_SELECTOR_LEN;
2867 }
2868 if (ciphers & WPA_CIPHER_GCMP_256) {
2869 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP_256);
2870 pos += RSN_SELECTOR_LEN;
2871 }
2872 if (ciphers & WPA_CIPHER_CCMP) {
2873 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP);
2874 pos += RSN_SELECTOR_LEN;
2875 }
2876 if (ciphers & WPA_CIPHER_GCMP) {
2877 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP);
2878 pos += RSN_SELECTOR_LEN;
2879 }
2880 if (ciphers & WPA_CIPHER_TKIP) {
2881 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_TKIP);
2882 pos += RSN_SELECTOR_LEN;
2883 }
2884 if (ciphers & WPA_CIPHER_NONE) {
2885 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NONE);
2886 pos += RSN_SELECTOR_LEN;
2887 }
2888
2889 return (pos - start) / RSN_SELECTOR_LEN;
2890 }
2891
2892
wpa_cipher_put_suites(u8 * start,int ciphers)2893 int wpa_cipher_put_suites(u8 *start, int ciphers)
2894 {
2895 u8 *pos = start;
2896
2897 if (ciphers & WPA_CIPHER_CCMP) {
2898 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_CCMP);
2899 pos += WPA_SELECTOR_LEN;
2900 }
2901 if (ciphers & WPA_CIPHER_TKIP) {
2902 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_TKIP);
2903 pos += WPA_SELECTOR_LEN;
2904 }
2905 if (ciphers & WPA_CIPHER_NONE) {
2906 RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_NONE);
2907 pos += WPA_SELECTOR_LEN;
2908 }
2909
2910 return (pos - start) / RSN_SELECTOR_LEN;
2911 }
2912
2913
wpa_pick_pairwise_cipher(int ciphers,int none_allowed)2914 int wpa_pick_pairwise_cipher(int ciphers, int none_allowed)
2915 {
2916 if (ciphers & WPA_CIPHER_CCMP_256)
2917 return WPA_CIPHER_CCMP_256;
2918 if (ciphers & WPA_CIPHER_GCMP_256)
2919 return WPA_CIPHER_GCMP_256;
2920 if (ciphers & WPA_CIPHER_CCMP)
2921 return WPA_CIPHER_CCMP;
2922 if (ciphers & WPA_CIPHER_GCMP)
2923 return WPA_CIPHER_GCMP;
2924 if (ciphers & WPA_CIPHER_TKIP)
2925 return WPA_CIPHER_TKIP;
2926 #ifdef CONFIG_WAPI
2927 if (ciphers & WPA_CIPHER_SMS4)
2928 return WPA_CIPHER_SMS4;
2929 #endif /* CONFIG_WAPI */
2930 if (none_allowed && (ciphers & WPA_CIPHER_NONE))
2931 return WPA_CIPHER_NONE;
2932 return -1;
2933 }
2934
2935
wpa_pick_group_cipher(int ciphers)2936 int wpa_pick_group_cipher(int ciphers)
2937 {
2938 if (ciphers & WPA_CIPHER_CCMP_256)
2939 return WPA_CIPHER_CCMP_256;
2940 if (ciphers & WPA_CIPHER_GCMP_256)
2941 return WPA_CIPHER_GCMP_256;
2942 if (ciphers & WPA_CIPHER_CCMP)
2943 return WPA_CIPHER_CCMP;
2944 if (ciphers & WPA_CIPHER_GCMP)
2945 return WPA_CIPHER_GCMP;
2946 if (ciphers & WPA_CIPHER_GTK_NOT_USED)
2947 return WPA_CIPHER_GTK_NOT_USED;
2948 if (ciphers & WPA_CIPHER_TKIP)
2949 return WPA_CIPHER_TKIP;
2950 #ifdef CONFIG_WAPI
2951 if (ciphers & WPA_CIPHER_SMS4)
2952 return WPA_CIPHER_SMS4;
2953 #endif /* CONFIG_WAPI */
2954 return -1;
2955 }
2956
2957
wpa_parse_cipher(const char * value)2958 int wpa_parse_cipher(const char *value)
2959 {
2960 int val = 0, last;
2961 char *start, *end, *buf;
2962
2963 buf = os_strdup(value);
2964 if (buf == NULL)
2965 return -1;
2966 start = buf;
2967
2968 while (*start != '\0') {
2969 while (*start == ' ' || *start == '\t')
2970 start++;
2971 if (*start == '\0')
2972 break;
2973 end = start;
2974 while (*end != ' ' && *end != '\t' && *end != '\0')
2975 end++;
2976 last = *end == '\0';
2977 *end = '\0';
2978 if (os_strcmp(start, "CCMP-256") == 0)
2979 val |= WPA_CIPHER_CCMP_256;
2980 else if (os_strcmp(start, "GCMP-256") == 0)
2981 val |= WPA_CIPHER_GCMP_256;
2982 else if (os_strcmp(start, "CCMP") == 0)
2983 val |= WPA_CIPHER_CCMP;
2984 else if (os_strcmp(start, "GCMP") == 0)
2985 val |= WPA_CIPHER_GCMP;
2986 #ifndef CONFIG_NO_TKIP
2987 else if (os_strcmp(start, "TKIP") == 0)
2988 val |= WPA_CIPHER_TKIP;
2989 #endif /* CONFIG_NO_TKIP */
2990 #ifdef CONFIG_WEP
2991 else if (os_strcmp(start, "WEP104") == 0)
2992 val |= WPA_CIPHER_WEP104;
2993 else if (os_strcmp(start, "WEP40") == 0)
2994 val |= WPA_CIPHER_WEP40;
2995 #endif /* CONFIG_WEP */
2996 else if (os_strcmp(start, "NONE") == 0)
2997 val |= WPA_CIPHER_NONE;
2998 else if (os_strcmp(start, "GTK_NOT_USED") == 0)
2999 val |= WPA_CIPHER_GTK_NOT_USED;
3000 else if (os_strcmp(start, "AES-128-CMAC") == 0)
3001 val |= WPA_CIPHER_AES_128_CMAC;
3002 else if (os_strcmp(start, "BIP-GMAC-128") == 0)
3003 val |= WPA_CIPHER_BIP_GMAC_128;
3004 else if (os_strcmp(start, "BIP-GMAC-256") == 0)
3005 val |= WPA_CIPHER_BIP_GMAC_256;
3006 else if (os_strcmp(start, "BIP-CMAC-256") == 0)
3007 val |= WPA_CIPHER_BIP_CMAC_256;
3008 #ifdef CONFIG_WAPI
3009 else if (os_strcmp(start, "SMS4") == 0)
3010 val |= WPA_CIPHER_SMS4;
3011 #endif /* CONFIG_WAPI */
3012 else {
3013 os_free(buf);
3014 return -1;
3015 }
3016
3017 if (last)
3018 break;
3019 start = end + 1;
3020 }
3021 os_free(buf);
3022
3023 return val;
3024 }
3025
3026 #ifdef EXT_WPA_MINI
wpa_write_ciphers(char * start,char * end,int ciphers,const char * delim)3027 int wpa_write_ciphers(char *start, char *end, int ciphers, const char *delim)
3028 {
3029 char *pos = start;
3030 int ret;
3031 unsigned int index;
3032 struct cipher_Types cipherTypes[] = { { WPA_CIPHER_CCMP_256, "\"%sCCMP-256\"" },
3033 { WPA_CIPHER_GCMP_256, "\"%sGCMP-256\""},
3034 { WPA_CIPHER_CCMP, "\"%sCCMP\"" },
3035 { WPA_CIPHER_GCMP, "\"%sGCMP\"" },
3036 { WPA_CIPHER_TKIP, "\"%sTKIP\"" },
3037 { WPA_CIPHER_AES_128_CMAC, "\"%sAES-128-CMAC\"" },
3038 { WPA_CIPHER_BIP_GMAC_128, "\"%sBIP-GMAC-128\"" },
3039 { WPA_CIPHER_BIP_GMAC_256, "\"%sBIP-GMAC-256\"" },
3040 { WPA_CIPHER_BIP_CMAC_256, "\"%sBIP-CMAC-256\"" },
3041 { WPA_CIPHER_NONE, "\"%sNONE\"" } };
3042
3043 for (index = 0; index < sizeof(cipherTypes) / sizeof(struct cipher_Types); index++) {
3044 if ((unsigned int)ciphers & (unsigned int)cipherTypes[index].cipher_type) {
3045 ret = os_snprintf(pos, end - pos, cipherTypes[index].cipherTypesString,
3046 pos == start ? "" : delim);
3047 if (os_snprintf_error(end - pos, ret))
3048 return -1;
3049 pos += ret;
3050 }
3051 }
3052 return pos - start;
3053 }
3054 #else
wpa_write_ciphers(char * start,char * end,int ciphers,const char * delim)3055 int wpa_write_ciphers(char *start, char *end, int ciphers, const char *delim)
3056 {
3057 char *pos = start;
3058 int ret;
3059
3060 if (ciphers & WPA_CIPHER_CCMP_256) {
3061 ret = os_snprintf(pos, end - pos, "%sCCMP-256",
3062 pos == start ? "" : delim);
3063 if (os_snprintf_error(end - pos, ret))
3064 return -1;
3065 pos += ret;
3066 }
3067 if (ciphers & WPA_CIPHER_GCMP_256) {
3068 ret = os_snprintf(pos, end - pos, "%sGCMP-256",
3069 pos == start ? "" : delim);
3070 if (os_snprintf_error(end - pos, ret))
3071 return -1;
3072 pos += ret;
3073 }
3074 if (ciphers & WPA_CIPHER_CCMP) {
3075 ret = os_snprintf(pos, end - pos, "%sCCMP",
3076 pos == start ? "" : delim);
3077 if (os_snprintf_error(end - pos, ret))
3078 return -1;
3079 pos += ret;
3080 }
3081 if (ciphers & WPA_CIPHER_GCMP) {
3082 ret = os_snprintf(pos, end - pos, "%sGCMP",
3083 pos == start ? "" : delim);
3084 if (os_snprintf_error(end - pos, ret))
3085 return -1;
3086 pos += ret;
3087 }
3088 if (ciphers & WPA_CIPHER_TKIP) {
3089 ret = os_snprintf(pos, end - pos, "%sTKIP",
3090 pos == start ? "" : delim);
3091 if (os_snprintf_error(end - pos, ret))
3092 return -1;
3093 pos += ret;
3094 }
3095 if (ciphers & WPA_CIPHER_AES_128_CMAC) {
3096 ret = os_snprintf(pos, end - pos, "%sAES-128-CMAC",
3097 pos == start ? "" : delim);
3098 if (os_snprintf_error(end - pos, ret))
3099 return -1;
3100 pos += ret;
3101 }
3102 if (ciphers & WPA_CIPHER_BIP_GMAC_128) {
3103 ret = os_snprintf(pos, end - pos, "%sBIP-GMAC-128",
3104 pos == start ? "" : delim);
3105 if (os_snprintf_error(end - pos, ret))
3106 return -1;
3107 pos += ret;
3108 }
3109 if (ciphers & WPA_CIPHER_BIP_GMAC_256) {
3110 ret = os_snprintf(pos, end - pos, "%sBIP-GMAC-256",
3111 pos == start ? "" : delim);
3112 if (os_snprintf_error(end - pos, ret))
3113 return -1;
3114 pos += ret;
3115 }
3116 if (ciphers & WPA_CIPHER_BIP_CMAC_256) {
3117 ret = os_snprintf(pos, end - pos, "%sBIP-CMAC-256",
3118 pos == start ? "" : delim);
3119 if (os_snprintf_error(end - pos, ret))
3120 return -1;
3121 pos += ret;
3122 }
3123 if (ciphers & WPA_CIPHER_NONE) {
3124 ret = os_snprintf(pos, end - pos, "%sNONE",
3125 pos == start ? "" : delim);
3126 if (os_snprintf_error(end - pos, ret))
3127 return -1;
3128 pos += ret;
3129 }
3130
3131 return pos - start;
3132 }
3133 #endif
3134
wpa_select_ap_group_cipher(int wpa,int wpa_pairwise,int rsn_pairwise)3135 int wpa_select_ap_group_cipher(int wpa, int wpa_pairwise, int rsn_pairwise)
3136 {
3137 int pairwise = 0;
3138
3139 /* Select group cipher based on the enabled pairwise cipher suites */
3140 if (wpa & 1)
3141 pairwise |= wpa_pairwise;
3142 if (wpa & 2)
3143 pairwise |= rsn_pairwise;
3144
3145 if (pairwise & WPA_CIPHER_TKIP)
3146 return WPA_CIPHER_TKIP;
3147 if ((pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP)
3148 return WPA_CIPHER_GCMP;
3149 if ((pairwise & (WPA_CIPHER_GCMP_256 | WPA_CIPHER_CCMP |
3150 WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP_256)
3151 return WPA_CIPHER_GCMP_256;
3152 if ((pairwise & (WPA_CIPHER_CCMP_256 | WPA_CIPHER_CCMP |
3153 WPA_CIPHER_GCMP)) == WPA_CIPHER_CCMP_256)
3154 return WPA_CIPHER_CCMP_256;
3155 return WPA_CIPHER_CCMP;
3156 }
3157
3158
3159 #ifdef CONFIG_FILS
fils_domain_name_hash(const char * domain,u8 * hash)3160 int fils_domain_name_hash(const char *domain, u8 *hash)
3161 {
3162 char buf[255], *wpos = buf;
3163 const char *pos = domain;
3164 size_t len;
3165 const u8 *addr[1];
3166 u8 mac[SHA256_MAC_LEN];
3167
3168 for (len = 0; len < sizeof(buf) && *pos; len++) {
3169 if (isalpha(*pos) && isupper(*pos))
3170 *wpos++ = tolower(*pos);
3171 else
3172 *wpos++ = *pos;
3173 pos++;
3174 }
3175
3176 addr[0] = (const u8 *) buf;
3177 if (sha256_vector(1, addr, &len, mac) < 0)
3178 return -1;
3179 os_memcpy(hash, mac, 2);
3180 return 0;
3181 }
3182 #endif /* CONFIG_FILS */
3183
3184
3185 /**
3186 * wpa_parse_vendor_specific - Parse Vendor Specific IEs
3187 * @pos: Pointer to the IE header
3188 * @end: Pointer to the end of the Key Data buffer
3189 * @ie: Pointer to parsed IE data
3190 */
wpa_parse_vendor_specific(const u8 * pos,const u8 * end,struct wpa_eapol_ie_parse * ie)3191 static void wpa_parse_vendor_specific(const u8 *pos, const u8 *end,
3192 struct wpa_eapol_ie_parse *ie)
3193 {
3194 unsigned int oui;
3195
3196 if (pos[1] < 4) {
3197 wpa_printf(MSG_MSGDUMP,
3198 "Too short vendor specific IE ignored (len=%u)",
3199 pos[1]);
3200 return;
3201 }
3202
3203 oui = WPA_GET_BE24(&pos[2]);
3204 if (oui == OUI_MICROSOFT && pos[5] == WMM_OUI_TYPE && pos[1] > 4) {
3205 if (pos[6] == WMM_OUI_SUBTYPE_INFORMATION_ELEMENT) {
3206 ie->wmm = &pos[2];
3207 ie->wmm_len = pos[1];
3208 wpa_hexdump(MSG_DEBUG, "WPA: WMM IE",
3209 ie->wmm, ie->wmm_len);
3210 } else if (pos[6] == WMM_OUI_SUBTYPE_PARAMETER_ELEMENT) {
3211 ie->wmm = &pos[2];
3212 ie->wmm_len = pos[1];
3213 wpa_hexdump(MSG_DEBUG, "WPA: WMM Parameter Element",
3214 ie->wmm, ie->wmm_len);
3215 }
3216 }
3217 }
3218
3219
3220 /**
3221 * wpa_parse_generic - Parse EAPOL-Key Key Data Generic IEs
3222 * @pos: Pointer to the IE header
3223 * @ie: Pointer to parsed IE data
3224 * Returns: 0 on success, 1 if end mark is found, 2 if KDE is not recognized
3225 */
wpa_parse_generic(const u8 * pos,struct wpa_eapol_ie_parse * ie)3226 static int wpa_parse_generic(const u8 *pos, struct wpa_eapol_ie_parse *ie)
3227 {
3228 if (pos[1] == 0)
3229 return 1;
3230
3231 if (pos[1] >= 6 &&
3232 RSN_SELECTOR_GET(pos + 2) == WPA_OUI_TYPE &&
3233 pos[2 + WPA_SELECTOR_LEN] == 1 &&
3234 pos[2 + WPA_SELECTOR_LEN + 1] == 0) {
3235 ie->wpa_ie = pos;
3236 ie->wpa_ie_len = pos[1] + 2;
3237 wpa_hexdump(MSG_DEBUG, "WPA: WPA IE in EAPOL-Key",
3238 ie->wpa_ie, ie->wpa_ie_len);
3239 return 0;
3240 }
3241
3242 if (pos[1] >= 4 && WPA_GET_BE32(pos + 2) == OSEN_IE_VENDOR_TYPE) {
3243 ie->osen = pos;
3244 ie->osen_len = pos[1] + 2;
3245 return 0;
3246 }
3247
3248 if (pos[1] >= RSN_SELECTOR_LEN + PMKID_LEN &&
3249 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_PMKID) {
3250 ie->pmkid = pos + 2 + RSN_SELECTOR_LEN;
3251 wpa_hexdump(MSG_DEBUG, "WPA: PMKID in EAPOL-Key",
3252 pos, pos[1] + 2);
3253 return 0;
3254 }
3255
3256 if (pos[1] >= RSN_SELECTOR_LEN + 2 &&
3257 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_KEYID) {
3258 ie->key_id = pos + 2 + RSN_SELECTOR_LEN;
3259 wpa_hexdump(MSG_DEBUG, "WPA: KeyID in EAPOL-Key",
3260 pos, pos[1] + 2);
3261 return 0;
3262 }
3263
3264 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
3265 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_GROUPKEY) {
3266 ie->gtk = pos + 2 + RSN_SELECTOR_LEN;
3267 ie->gtk_len = pos[1] - RSN_SELECTOR_LEN;
3268 wpa_hexdump_key(MSG_DEBUG, "WPA: GTK in EAPOL-Key",
3269 pos, pos[1] + 2);
3270 return 0;
3271 }
3272
3273 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
3274 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_MAC_ADDR) {
3275 ie->mac_addr = pos + 2 + RSN_SELECTOR_LEN;
3276 ie->mac_addr_len = pos[1] - RSN_SELECTOR_LEN;
3277 wpa_hexdump(MSG_DEBUG, "WPA: MAC Address in EAPOL-Key",
3278 pos, pos[1] + 2);
3279 return 0;
3280 }
3281
3282 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
3283 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_IGTK) {
3284 ie->igtk = pos + 2 + RSN_SELECTOR_LEN;
3285 ie->igtk_len = pos[1] - RSN_SELECTOR_LEN;
3286 wpa_hexdump_key(MSG_DEBUG, "WPA: IGTK in EAPOL-Key",
3287 pos, pos[1] + 2);
3288 return 0;
3289 }
3290
3291 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
3292 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_BIGTK) {
3293 ie->bigtk = pos + 2 + RSN_SELECTOR_LEN;
3294 ie->bigtk_len = pos[1] - RSN_SELECTOR_LEN;
3295 wpa_hexdump_key(MSG_DEBUG, "WPA: BIGTK in EAPOL-Key",
3296 pos, pos[1] + 2);
3297 return 0;
3298 }
3299
3300 if (pos[1] >= RSN_SELECTOR_LEN + 1 &&
3301 RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_REQ) {
3302 ie->ip_addr_req = pos + 2 + RSN_SELECTOR_LEN;
3303 wpa_hexdump(MSG_DEBUG, "WPA: IP Address Request in EAPOL-Key",
3304 ie->ip_addr_req, pos[1] - RSN_SELECTOR_LEN);
3305 return 0;
3306 }
3307
3308 if (pos[1] >= RSN_SELECTOR_LEN + 3 * 4 &&
3309 RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_ALLOC) {
3310 ie->ip_addr_alloc = pos + 2 + RSN_SELECTOR_LEN;
3311 wpa_hexdump(MSG_DEBUG,
3312 "WPA: IP Address Allocation in EAPOL-Key",
3313 ie->ip_addr_alloc, pos[1] - RSN_SELECTOR_LEN);
3314 return 0;
3315 }
3316
3317 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
3318 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_OCI) {
3319 ie->oci = pos + 2 + RSN_SELECTOR_LEN;
3320 ie->oci_len = pos[1] - RSN_SELECTOR_LEN;
3321 wpa_hexdump(MSG_DEBUG, "WPA: OCI KDE in EAPOL-Key",
3322 pos, pos[1] + 2);
3323 return 0;
3324 }
3325
3326 if (pos[1] >= RSN_SELECTOR_LEN + 1 &&
3327 RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_TRANSITION_DISABLE) {
3328 ie->transition_disable = pos + 2 + RSN_SELECTOR_LEN;
3329 ie->transition_disable_len = pos[1] - RSN_SELECTOR_LEN;
3330 wpa_hexdump(MSG_DEBUG,
3331 "WPA: Transition Disable KDE in EAPOL-Key",
3332 pos, pos[1] + 2);
3333 return 0;
3334 }
3335
3336 if (pos[1] >= RSN_SELECTOR_LEN + 2 &&
3337 RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_DPP) {
3338 ie->dpp_kde = pos + 2 + RSN_SELECTOR_LEN;
3339 ie->dpp_kde_len = pos[1] - RSN_SELECTOR_LEN;
3340 wpa_hexdump(MSG_DEBUG, "WPA: DPP KDE in EAPOL-Key",
3341 pos, pos[1] + 2);
3342 return 0;
3343 }
3344
3345 return 2;
3346 }
3347
3348
3349 /**
3350 * wpa_parse_kde_ies - Parse EAPOL-Key Key Data IEs
3351 * @buf: Pointer to the Key Data buffer
3352 * @len: Key Data Length
3353 * @ie: Pointer to parsed IE data
3354 * Returns: 0 on success, -1 on failure
3355 */
wpa_parse_kde_ies(const u8 * buf,size_t len,struct wpa_eapol_ie_parse * ie)3356 int wpa_parse_kde_ies(const u8 *buf, size_t len, struct wpa_eapol_ie_parse *ie)
3357 {
3358 const u8 *pos, *end;
3359 int ret = 0;
3360
3361 os_memset(ie, 0, sizeof(*ie));
3362 for (pos = buf, end = pos + len; end - pos > 1; pos += 2 + pos[1]) {
3363 if (pos[0] == 0xdd &&
3364 ((pos == buf + len - 1) || pos[1] == 0)) {
3365 /* Ignore padding */
3366 break;
3367 }
3368 if (2 + pos[1] > end - pos) {
3369 wpa_printf(MSG_DEBUG,
3370 "WPA: EAPOL-Key Key Data underflow (ie=%d len=%d pos=%d)",
3371 pos[0], pos[1], (int) (pos - buf));
3372 wpa_hexdump_key(MSG_DEBUG, "WPA: Key Data", buf, len);
3373 ret = -1;
3374 break;
3375 }
3376 if (*pos == WLAN_EID_RSN) {
3377 ie->rsn_ie = pos;
3378 ie->rsn_ie_len = pos[1] + 2;
3379 wpa_hexdump(MSG_DEBUG, "WPA: RSN IE in EAPOL-Key",
3380 ie->rsn_ie, ie->rsn_ie_len);
3381 } else if (*pos == WLAN_EID_RSNX) {
3382 ie->rsnxe = pos;
3383 ie->rsnxe_len = pos[1] + 2;
3384 wpa_hexdump(MSG_DEBUG, "WPA: RSNXE in EAPOL-Key",
3385 ie->rsnxe, ie->rsnxe_len);
3386 } else if (*pos == WLAN_EID_MOBILITY_DOMAIN) {
3387 ie->mdie = pos;
3388 ie->mdie_len = pos[1] + 2;
3389 wpa_hexdump(MSG_DEBUG, "WPA: MDIE in EAPOL-Key",
3390 ie->mdie, ie->mdie_len);
3391 } else if (*pos == WLAN_EID_FAST_BSS_TRANSITION) {
3392 ie->ftie = pos;
3393 ie->ftie_len = pos[1] + 2;
3394 wpa_hexdump(MSG_DEBUG, "WPA: FTIE in EAPOL-Key",
3395 ie->ftie, ie->ftie_len);
3396 } else if (*pos == WLAN_EID_TIMEOUT_INTERVAL && pos[1] >= 5) {
3397 if (pos[2] == WLAN_TIMEOUT_REASSOC_DEADLINE) {
3398 ie->reassoc_deadline = pos;
3399 wpa_hexdump(MSG_DEBUG, "WPA: Reassoc Deadline "
3400 "in EAPOL-Key",
3401 ie->reassoc_deadline, pos[1] + 2);
3402 } else if (pos[2] == WLAN_TIMEOUT_KEY_LIFETIME) {
3403 ie->key_lifetime = pos;
3404 wpa_hexdump(MSG_DEBUG, "WPA: KeyLifetime "
3405 "in EAPOL-Key",
3406 ie->key_lifetime, pos[1] + 2);
3407 } else {
3408 wpa_hexdump(MSG_DEBUG, "WPA: Unrecognized "
3409 "EAPOL-Key Key Data IE",
3410 pos, 2 + pos[1]);
3411 }
3412 } else if (*pos == WLAN_EID_LINK_ID) {
3413 if (pos[1] >= 18) {
3414 ie->lnkid = pos;
3415 ie->lnkid_len = pos[1] + 2;
3416 }
3417 } else if (*pos == WLAN_EID_EXT_CAPAB) {
3418 ie->ext_capab = pos;
3419 ie->ext_capab_len = pos[1] + 2;
3420 } else if (*pos == WLAN_EID_SUPP_RATES) {
3421 ie->supp_rates = pos;
3422 ie->supp_rates_len = pos[1] + 2;
3423 } else if (*pos == WLAN_EID_EXT_SUPP_RATES) {
3424 ie->ext_supp_rates = pos;
3425 ie->ext_supp_rates_len = pos[1] + 2;
3426 } else if (*pos == WLAN_EID_HT_CAP &&
3427 pos[1] >= sizeof(struct ieee80211_ht_capabilities)) {
3428 ie->ht_capabilities = pos + 2;
3429 } else if (*pos == WLAN_EID_VHT_AID) {
3430 if (pos[1] >= 2)
3431 ie->aid = WPA_GET_LE16(pos + 2) & 0x3fff;
3432 } else if (*pos == WLAN_EID_VHT_CAP &&
3433 pos[1] >= sizeof(struct ieee80211_vht_capabilities))
3434 {
3435 ie->vht_capabilities = pos + 2;
3436 } else if (*pos == WLAN_EID_EXTENSION &&
3437 pos[1] >= 1 + IEEE80211_HE_CAPAB_MIN_LEN &&
3438 pos[2] == WLAN_EID_EXT_HE_CAPABILITIES) {
3439 ie->he_capabilities = pos + 3;
3440 ie->he_capab_len = pos[1] - 1;
3441 } else if (*pos == WLAN_EID_EXTENSION &&
3442 pos[1] >= 1 +
3443 sizeof(struct ieee80211_he_6ghz_band_cap) &&
3444 pos[2] == WLAN_EID_EXT_HE_6GHZ_BAND_CAP) {
3445 ie->he_6ghz_capabilities = pos + 3;
3446 } else if (*pos == WLAN_EID_QOS && pos[1] >= 1) {
3447 ie->qosinfo = pos[2];
3448 } else if (*pos == WLAN_EID_SUPPORTED_CHANNELS) {
3449 ie->supp_channels = pos + 2;
3450 ie->supp_channels_len = pos[1];
3451 } else if (*pos == WLAN_EID_SUPPORTED_OPERATING_CLASSES) {
3452 /*
3453 * The value of the Length field of the Supported
3454 * Operating Classes element is between 2 and 253.
3455 * Silently skip invalid elements to avoid interop
3456 * issues when trying to use the value.
3457 */
3458 if (pos[1] >= 2 && pos[1] <= 253) {
3459 ie->supp_oper_classes = pos + 2;
3460 ie->supp_oper_classes_len = pos[1];
3461 }
3462 } else if (*pos == WLAN_EID_VENDOR_SPECIFIC) {
3463 ret = wpa_parse_generic(pos, ie);
3464 if (ret == 1) {
3465 /* end mark found */
3466 ret = 0;
3467 break;
3468 }
3469
3470 if (ret == 2) {
3471 /* not a known KDE */
3472 wpa_parse_vendor_specific(pos, end, ie);
3473 }
3474
3475 ret = 0;
3476 } else {
3477 wpa_hexdump(MSG_DEBUG,
3478 "WPA: Unrecognized EAPOL-Key Key Data IE",
3479 pos, 2 + pos[1]);
3480 }
3481 }
3482
3483 return ret;
3484 }
3485
3486
3487 #ifdef CONFIG_PASN
3488
3489 /*
3490 * wpa_pasn_build_auth_header - Add the MAC header and initialize Authentication
3491 * frame for PASN
3492 *
3493 * @buf: Buffer in which the header will be added
3494 * @bssid: The BSSID of the AP
3495 * @src: Source address
3496 * @dst: Destination address
3497 * @trans_seq: Authentication transaction sequence number
3498 * @status: Authentication status
3499 */
wpa_pasn_build_auth_header(struct wpabuf * buf,const u8 * bssid,const u8 * src,const u8 * dst,u8 trans_seq,u16 status)3500 void wpa_pasn_build_auth_header(struct wpabuf *buf, const u8 *bssid,
3501 const u8 *src, const u8 *dst,
3502 u8 trans_seq, u16 status)
3503 {
3504 struct ieee80211_mgmt *auth;
3505
3506 wpa_printf(MSG_DEBUG, "PASN: Add authentication header. trans_seq=%u",
3507 trans_seq);
3508
3509 auth = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
3510 u.auth.variable));
3511
3512 auth->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
3513 (WLAN_FC_STYPE_AUTH << 4));
3514
3515 os_memcpy(auth->da, dst, ETH_ALEN);
3516 os_memcpy(auth->sa, src, ETH_ALEN);
3517 os_memcpy(auth->bssid, bssid, ETH_ALEN);
3518 auth->seq_ctrl = 0;
3519
3520 auth->u.auth.auth_alg = host_to_le16(WLAN_AUTH_PASN);
3521 auth->u.auth.auth_transaction = host_to_le16(trans_seq);
3522 auth->u.auth.status_code = host_to_le16(status);
3523 }
3524
3525
3526 /*
3527 * wpa_pasn_add_rsne - Add an RSNE for PASN authentication
3528 * @buf: Buffer in which the IE will be added
3529 * @pmkid: Optional PMKID. Can be NULL.
3530 * @akmp: Authentication and key management protocol
3531 * @cipher: The cipher suite
3532 */
wpa_pasn_add_rsne(struct wpabuf * buf,const u8 * pmkid,int akmp,int cipher)3533 int wpa_pasn_add_rsne(struct wpabuf *buf, const u8 *pmkid, int akmp, int cipher)
3534 {
3535 struct rsn_ie_hdr *hdr;
3536 u32 suite;
3537 u16 capab;
3538 u8 *pos;
3539 u8 rsne_len;
3540
3541 wpa_printf(MSG_DEBUG, "PASN: Add RSNE");
3542
3543 rsne_len = sizeof(*hdr) + RSN_SELECTOR_LEN +
3544 2 + RSN_SELECTOR_LEN + 2 + RSN_SELECTOR_LEN +
3545 2 + RSN_SELECTOR_LEN + 2 + (pmkid ? PMKID_LEN : 0);
3546
3547 if (wpabuf_tailroom(buf) < rsne_len)
3548 return -1;
3549 hdr = wpabuf_put(buf, rsne_len);
3550 hdr->elem_id = WLAN_EID_RSN;
3551 hdr->len = rsne_len - 2;
3552 WPA_PUT_LE16(hdr->version, RSN_VERSION);
3553 pos = (u8 *) (hdr + 1);
3554
3555 /* Group addressed data is not allowed */
3556 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED);
3557 pos += RSN_SELECTOR_LEN;
3558
3559 /* Add the pairwise cipher */
3560 WPA_PUT_LE16(pos, 1);
3561 pos += 2;
3562 suite = wpa_cipher_to_suite(WPA_PROTO_RSN, cipher);
3563 RSN_SELECTOR_PUT(pos, suite);
3564 pos += RSN_SELECTOR_LEN;
3565
3566 /* Add the AKM suite */
3567 WPA_PUT_LE16(pos, 1);
3568 pos += 2;
3569
3570 switch (akmp) {
3571 case WPA_KEY_MGMT_PASN:
3572 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PASN);
3573 break;
3574 #ifdef CONFIG_SAE
3575 case WPA_KEY_MGMT_SAE:
3576 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_SAE);
3577 break;
3578 #endif /* CONFIG_SAE */
3579 #ifdef CONFIG_FILS
3580 case WPA_KEY_MGMT_FILS_SHA256:
3581 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FILS_SHA256);
3582 break;
3583 case WPA_KEY_MGMT_FILS_SHA384:
3584 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FILS_SHA384);
3585 break;
3586 #endif /* CONFIG_FILS */
3587 #ifdef CONFIG_IEEE80211R
3588 case WPA_KEY_MGMT_FT_PSK:
3589 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_PSK);
3590 break;
3591 case WPA_KEY_MGMT_FT_IEEE8021X:
3592 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_802_1X);
3593 break;
3594 case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
3595 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_802_1X_SHA384);
3596 break;
3597 #endif /* CONFIG_IEEE80211R */
3598 default:
3599 wpa_printf(MSG_ERROR, "PASN: Invalid AKMP=0x%x", akmp);
3600 return -1;
3601 }
3602 pos += RSN_SELECTOR_LEN;
3603
3604 /* RSN Capabilities: PASN mandates both MFP capable and required */
3605 capab = WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR;
3606 WPA_PUT_LE16(pos, capab);
3607 pos += 2;
3608
3609 if (pmkid) {
3610 wpa_printf(MSG_DEBUG, "PASN: Adding PMKID");
3611
3612 WPA_PUT_LE16(pos, 1);
3613 pos += 2;
3614 os_memcpy(pos, pmkid, PMKID_LEN);
3615 pos += PMKID_LEN;
3616 } else {
3617 WPA_PUT_LE16(pos, 0);
3618 pos += 2;
3619 }
3620
3621 /* Group addressed management is not allowed */
3622 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED);
3623
3624 return 0;
3625 }
3626
3627
3628 /*
3629 * wpa_pasn_add_parameter_ie - Add PASN Parameters IE for PASN authentication
3630 * @buf: Buffer in which the IE will be added
3631 * @pasn_group: Finite Cyclic Group ID for PASN authentication
3632 * @wrapped_data_format: Format of the data in the Wrapped Data IE
3633 * @pubkey: A buffer holding the local public key. Can be NULL
3634 * @compressed: In case pubkey is included, indicates if the public key is
3635 * compressed (only x coordinate is included) or not (both x and y
3636 * coordinates are included)
3637 * @comeback: A buffer holding the comeback token. Can be NULL
3638 * @after: If comeback is set, defined the comeback time in seconds. -1 to not
3639 * include the Comeback After field (frames from non-AP STA).
3640 */
wpa_pasn_add_parameter_ie(struct wpabuf * buf,u16 pasn_group,u8 wrapped_data_format,const struct wpabuf * pubkey,bool compressed,const struct wpabuf * comeback,int after)3641 void wpa_pasn_add_parameter_ie(struct wpabuf *buf, u16 pasn_group,
3642 u8 wrapped_data_format,
3643 const struct wpabuf *pubkey, bool compressed,
3644 const struct wpabuf *comeback, int after)
3645 {
3646 struct pasn_parameter_ie *params;
3647
3648 wpa_printf(MSG_DEBUG, "PASN: Add PASN Parameters element");
3649
3650 params = wpabuf_put(buf, sizeof(*params));
3651
3652 params->id = WLAN_EID_EXTENSION;
3653 params->len = sizeof(*params) - 2;
3654 params->id_ext = WLAN_EID_EXT_PASN_PARAMS;
3655 params->control = 0;
3656 params->wrapped_data_format = wrapped_data_format;
3657
3658 if (comeback) {
3659 wpa_printf(MSG_DEBUG, "PASN: Adding comeback data");
3660
3661 /*
3662 * 2 octets for the 'after' field + 1 octet for the length +
3663 * actual cookie data
3664 */
3665 if (after >= 0)
3666 params->len += 2;
3667 params->len += 1 + wpabuf_len(comeback);
3668 params->control |= WPA_PASN_CTRL_COMEBACK_INFO_PRESENT;
3669
3670 if (after >= 0)
3671 wpabuf_put_le16(buf, after);
3672 wpabuf_put_u8(buf, wpabuf_len(comeback));
3673 wpabuf_put_buf(buf, comeback);
3674 }
3675
3676 if (pubkey) {
3677 wpa_printf(MSG_DEBUG,
3678 "PASN: Adding public key and group ID %u",
3679 pasn_group);
3680
3681 /*
3682 * 2 octets for the finite cyclic group + 2 octets public key
3683 * length + 1 octet for the compressed/uncompressed indication +
3684 * the actual key.
3685 */
3686 params->len += 2 + 1 + 1 + wpabuf_len(pubkey);
3687 params->control |= WPA_PASN_CTRL_GROUP_AND_KEY_PRESENT;
3688
3689 wpabuf_put_le16(buf, pasn_group);
3690
3691 /*
3692 * The first octet indicates whether the public key is
3693 * compressed, as defined in RFC 5480 section 2.2.
3694 */
3695 wpabuf_put_u8(buf, wpabuf_len(pubkey) + 1);
3696 wpabuf_put_u8(buf, compressed ? WPA_PASN_PUBKEY_COMPRESSED_0 :
3697 WPA_PASN_PUBKEY_UNCOMPRESSED);
3698
3699 wpabuf_put_buf(buf, pubkey);
3700 }
3701 }
3702
3703 /*
3704 * wpa_pasn_add_wrapped_data - Add a Wrapped Data IE to PASN Authentication
3705 * frame. If needed, the Wrapped Data IE would be fragmented.
3706 *
3707 * @buf: Buffer in which the IE will be added
3708 * @wrapped_data_buf: Buffer holding the wrapped data
3709 */
wpa_pasn_add_wrapped_data(struct wpabuf * buf,struct wpabuf * wrapped_data_buf)3710 int wpa_pasn_add_wrapped_data(struct wpabuf *buf,
3711 struct wpabuf *wrapped_data_buf)
3712 {
3713 const u8 *data;
3714 size_t data_len;
3715 u8 len;
3716
3717 if (!wrapped_data_buf)
3718 return 0;
3719
3720 wpa_printf(MSG_DEBUG, "PASN: Add wrapped data");
3721
3722 data = wpabuf_head_u8(wrapped_data_buf);
3723 data_len = wpabuf_len(wrapped_data_buf);
3724
3725 /* nothing to add */
3726 if (!data_len)
3727 return 0;
3728
3729 if (data_len <= 254)
3730 len = 1 + data_len;
3731 else
3732 len = 255;
3733
3734 if (wpabuf_tailroom(buf) < 3 + data_len)
3735 return -1;
3736
3737 wpabuf_put_u8(buf, WLAN_EID_EXTENSION);
3738 wpabuf_put_u8(buf, len);
3739 wpabuf_put_u8(buf, WLAN_EID_EXT_WRAPPED_DATA);
3740 wpabuf_put_data(buf, data, len - 1);
3741
3742 data += len - 1;
3743 data_len -= len - 1;
3744
3745 while (data_len) {
3746 if (wpabuf_tailroom(buf) < 1 + data_len)
3747 return -1;
3748 wpabuf_put_u8(buf, WLAN_EID_FRAGMENT);
3749 len = data_len > 255 ? 255 : data_len;
3750 wpabuf_put_u8(buf, len);
3751 wpabuf_put_data(buf, data, len);
3752 data += len;
3753 data_len -= len;
3754 }
3755
3756 return 0;
3757 }
3758
3759
3760 /*
3761 * wpa_pasn_validate_rsne - Validate PSAN specific data of RSNE
3762 * @data: Parsed representation of an RSNE
3763 * Returns -1 for invalid data; otherwise 0
3764 */
wpa_pasn_validate_rsne(const struct wpa_ie_data * data)3765 int wpa_pasn_validate_rsne(const struct wpa_ie_data *data)
3766 {
3767 u16 capab = WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR;
3768
3769 if (data->proto != WPA_PROTO_RSN)
3770 return -1;
3771
3772 if ((data->capabilities & capab) != capab) {
3773 wpa_printf(MSG_DEBUG, "PASN: Invalid RSNE capabilities");
3774 return -1;
3775 }
3776
3777 if (!data->has_group || data->group_cipher != WPA_CIPHER_GTK_NOT_USED) {
3778 wpa_printf(MSG_DEBUG, "PASN: Invalid group data cipher");
3779 return -1;
3780 }
3781
3782 if (!data->has_pairwise || !data->pairwise_cipher ||
3783 (data->pairwise_cipher & (data->pairwise_cipher - 1))) {
3784 wpa_printf(MSG_DEBUG, "PASN: No valid pairwise suite");
3785 return -1;
3786 }
3787
3788 switch (data->key_mgmt) {
3789 #ifdef CONFIG_SAE
3790 case WPA_KEY_MGMT_SAE:
3791 /* fall through */
3792 #endif /* CONFIG_SAE */
3793 #ifdef CONFIG_FILS
3794 case WPA_KEY_MGMT_FILS_SHA256:
3795 case WPA_KEY_MGMT_FILS_SHA384:
3796 /* fall through */
3797 #endif /* CONFIG_FILS */
3798 #ifdef CONFIG_IEEE80211R
3799 case WPA_KEY_MGMT_FT_PSK:
3800 case WPA_KEY_MGMT_FT_IEEE8021X:
3801 case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
3802 /* fall through */
3803 #endif /* CONFIG_IEEE80211R */
3804 case WPA_KEY_MGMT_PASN:
3805 break;
3806 default:
3807 wpa_printf(MSG_ERROR, "PASN: invalid key_mgmt: 0x%0x",
3808 data->key_mgmt);
3809 return -1;
3810 }
3811
3812 if (data->mgmt_group_cipher != WPA_CIPHER_GTK_NOT_USED) {
3813 wpa_printf(MSG_DEBUG, "PASN: Invalid group mgmt cipher");
3814 return -1;
3815 }
3816
3817 if (data->num_pmkid > 1) {
3818 wpa_printf(MSG_DEBUG, "PASN: Invalid number of PMKIDs");
3819 return -1;
3820 }
3821
3822 return 0;
3823 }
3824
3825
3826 /*
3827 * wpa_pasn_parse_parameter_ie - Validates PASN Parameters IE
3828 * @data: Pointer to the PASN Parameters IE (starting with the EID).
3829 * @len: Length of the data in the PASN Parameters IE
3830 * @from_ap: Whether this was received from an AP
3831 * @pasn_params: On successful return would hold the parsed PASN parameters.
3832 * Returns: -1 for invalid data; otherwise 0
3833 *
3834 * Note: On successful return, the pointers in &pasn_params point to the data in
3835 * the IE and are not locally allocated (so they should not be freed etc.).
3836 */
wpa_pasn_parse_parameter_ie(const u8 * data,u8 len,bool from_ap,struct wpa_pasn_params_data * pasn_params)3837 int wpa_pasn_parse_parameter_ie(const u8 *data, u8 len, bool from_ap,
3838 struct wpa_pasn_params_data *pasn_params)
3839 {
3840 struct pasn_parameter_ie *params = (struct pasn_parameter_ie *) data;
3841 const u8 *pos = (const u8 *) (params + 1);
3842
3843 if (!pasn_params) {
3844 wpa_printf(MSG_DEBUG, "PASN: Invalid params");
3845 return -1;
3846 }
3847
3848 if (!params || ((size_t) (params->len + 2) < sizeof(*params)) ||
3849 len < sizeof(*params) || params->len + 2 != len) {
3850 wpa_printf(MSG_DEBUG,
3851 "PASN: Invalid parameters IE. len=(%u, %u)",
3852 params ? params->len : 0, len);
3853 return -1;
3854 }
3855
3856 os_memset(pasn_params, 0, sizeof(*pasn_params));
3857
3858 switch (params->wrapped_data_format) {
3859 case WPA_PASN_WRAPPED_DATA_NO:
3860 case WPA_PASN_WRAPPED_DATA_SAE:
3861 case WPA_PASN_WRAPPED_DATA_FILS_SK:
3862 case WPA_PASN_WRAPPED_DATA_FT:
3863 break;
3864 default:
3865 wpa_printf(MSG_DEBUG, "PASN: Invalid wrapped data format");
3866 return -1;
3867 }
3868
3869 pasn_params->wrapped_data_format = params->wrapped_data_format;
3870
3871 len -= sizeof(*params);
3872
3873 if (params->control & WPA_PASN_CTRL_COMEBACK_INFO_PRESENT) {
3874 if (from_ap) {
3875 if (len < 2) {
3876 wpa_printf(MSG_DEBUG,
3877 "PASN: Invalid Parameters IE: Truncated Comeback After");
3878 return -1;
3879 }
3880 pasn_params->after = WPA_GET_LE16(pos);
3881 pos += 2;
3882 len -= 2;
3883 }
3884
3885 if (len < 1 || len < 1 + *pos) {
3886 wpa_printf(MSG_DEBUG,
3887 "PASN: Invalid Parameters IE: comeback len");
3888 return -1;
3889 }
3890
3891 pasn_params->comeback_len = *pos++;
3892 len--;
3893 pasn_params->comeback = pos;
3894 len -= pasn_params->comeback_len;
3895 pos += pasn_params->comeback_len;
3896 }
3897
3898 if (params->control & WPA_PASN_CTRL_GROUP_AND_KEY_PRESENT) {
3899 if (len < 3 || len < 3 + pos[2]) {
3900 wpa_printf(MSG_DEBUG,
3901 "PASN: Invalid Parameters IE: group and key");
3902 return -1;
3903 }
3904
3905 pasn_params->group = WPA_GET_LE16(pos);
3906 pos += 2;
3907 len -= 2;
3908 pasn_params->pubkey_len = *pos++;
3909 len--;
3910 pasn_params->pubkey = pos;
3911 len -= pasn_params->pubkey_len;
3912 pos += pasn_params->pubkey_len;
3913 }
3914
3915 if (len) {
3916 wpa_printf(MSG_DEBUG,
3917 "PASN: Invalid Parameters IE. Bytes left=%u", len);
3918 return -1;
3919 }
3920
3921 return 0;
3922 }
3923
3924
wpa_pasn_add_rsnxe(struct wpabuf * buf,u16 capab)3925 void wpa_pasn_add_rsnxe(struct wpabuf *buf, u16 capab)
3926 {
3927 size_t flen;
3928
3929 flen = (capab & 0xff00) ? 2 : 1;
3930 if (!capab)
3931 return; /* no supported extended RSN capabilities */
3932 if (wpabuf_tailroom(buf) < 2 + flen)
3933 return;
3934 capab |= flen - 1; /* bit 0-3 = Field length (n - 1) */
3935
3936 wpabuf_put_u8(buf, WLAN_EID_RSNX);
3937 wpabuf_put_u8(buf, flen);
3938 wpabuf_put_u8(buf, capab & 0x00ff);
3939 capab >>= 8;
3940 if (capab)
3941 wpabuf_put_u8(buf, capab);
3942 }
3943
3944 #endif /* CONFIG_PASN */
3945