2 * EAP peer: EAP-SIM/AKA shared routines
3 * Copyright (c) 2004-2006, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
22 #include "eap_sim_common.h"
25 static int eap_sim_prf(const u8 *key, u8 *x, size_t xlen)
27 return fips186_2_prf(key, EAP_SIM_MK_LEN, x, xlen);
31 void eap_sim_derive_mk(const u8 *identity, size_t identity_len,
32 const u8 *nonce_mt, u16 selected_version,
33 const u8 *ver_list, size_t ver_list_len,
34 int num_chal, const u8 *kc, u8 *mk)
37 const unsigned char *addr[5];
41 len[0] = identity_len;
43 len[1] = num_chal * EAP_SIM_KC_LEN;
45 len[2] = EAP_SIM_NONCE_MT_LEN;
47 len[3] = ver_list_len;
51 WPA_PUT_BE16(sel_ver, selected_version);
53 /* MK = SHA1(Identity|n*Kc|NONCE_MT|Version List|Selected Version) */
54 sha1_vector(5, addr, len, mk);
55 wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: MK", mk, EAP_SIM_MK_LEN);
59 void eap_aka_derive_mk(const u8 *identity, size_t identity_len,
60 const u8 *ik, const u8 *ck, u8 *mk)
66 len[0] = identity_len;
68 len[1] = EAP_AKA_IK_LEN;
70 len[2] = EAP_AKA_CK_LEN;
72 /* MK = SHA1(Identity|IK|CK) */
73 sha1_vector(3, addr, len, mk);
74 wpa_hexdump_key(MSG_DEBUG, "EAP-AKA: IK", ik, EAP_AKA_IK_LEN);
75 wpa_hexdump_key(MSG_DEBUG, "EAP-AKA: CK", ck, EAP_AKA_CK_LEN);
76 wpa_hexdump_key(MSG_DEBUG, "EAP-AKA: MK", mk, EAP_SIM_MK_LEN);
80 int eap_sim_derive_keys(const u8 *mk, u8 *k_encr, u8 *k_aut, u8 *msk, u8 *emsk)
82 u8 buf[EAP_SIM_K_ENCR_LEN + EAP_SIM_K_AUT_LEN +
83 EAP_SIM_KEYING_DATA_LEN + EAP_EMSK_LEN], *pos;
84 if (eap_sim_prf(mk, buf, sizeof(buf)) < 0) {
85 wpa_printf(MSG_ERROR, "EAP-SIM: Failed to derive keys");
89 os_memcpy(k_encr, pos, EAP_SIM_K_ENCR_LEN);
90 pos += EAP_SIM_K_ENCR_LEN;
91 os_memcpy(k_aut, pos, EAP_SIM_K_AUT_LEN);
92 pos += EAP_SIM_K_AUT_LEN;
93 os_memcpy(msk, pos, EAP_SIM_KEYING_DATA_LEN);
94 pos += EAP_SIM_KEYING_DATA_LEN;
95 os_memcpy(emsk, pos, EAP_EMSK_LEN);
97 wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: K_encr",
98 k_encr, EAP_SIM_K_ENCR_LEN);
99 wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: K_aut",
100 k_aut, EAP_SIM_K_AUT_LEN);
101 wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: keying material (MSK)",
102 msk, EAP_SIM_KEYING_DATA_LEN);
103 wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: EMSK", emsk, EAP_EMSK_LEN);
104 os_memset(buf, 0, sizeof(buf));
110 int eap_sim_derive_keys_reauth(u16 _counter,
111 const u8 *identity, size_t identity_len,
112 const u8 *nonce_s, const u8 *mk, u8 *msk,
115 u8 xkey[SHA1_MAC_LEN];
116 u8 buf[EAP_SIM_KEYING_DATA_LEN + EAP_EMSK_LEN + 32];
122 len[0] = identity_len;
126 len[2] = EAP_SIM_NONCE_S_LEN;
128 len[3] = EAP_SIM_MK_LEN;
130 WPA_PUT_BE16(counter, _counter);
132 wpa_printf(MSG_DEBUG, "EAP-SIM: Deriving keying data from reauth");
133 wpa_hexdump_ascii(MSG_DEBUG, "EAP-SIM: Identity",
134 identity, identity_len);
135 wpa_hexdump(MSG_DEBUG, "EAP-SIM: counter", counter, 2);
136 wpa_hexdump(MSG_DEBUG, "EAP-SIM: NONCE_S", nonce_s,
137 EAP_SIM_NONCE_S_LEN);
138 wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: MK", mk, EAP_SIM_MK_LEN);
140 /* XKEY' = SHA1(Identity|counter|NONCE_S|MK) */
141 sha1_vector(4, addr, len, xkey);
142 wpa_hexdump(MSG_DEBUG, "EAP-SIM: XKEY'", xkey, SHA1_MAC_LEN);
144 if (eap_sim_prf(xkey, buf, sizeof(buf)) < 0) {
145 wpa_printf(MSG_ERROR, "EAP-SIM: Failed to derive keys");
149 os_memcpy(msk, buf, EAP_SIM_KEYING_DATA_LEN);
150 wpa_hexdump(MSG_DEBUG, "EAP-SIM: keying material (MSK)",
151 msk, EAP_SIM_KEYING_DATA_LEN);
154 os_memcpy(emsk, buf + EAP_SIM_KEYING_DATA_LEN, EAP_EMSK_LEN);
155 wpa_hexdump(MSG_DEBUG, "EAP-SIM: EMSK", emsk, EAP_EMSK_LEN);
157 os_memset(buf, 0, sizeof(buf));
163 int eap_sim_verify_mac(const u8 *k_aut, const u8 *req, size_t req_len,
164 const u8 *mac, const u8 *extra, size_t extra_len)
166 unsigned char hmac[SHA1_MAC_LEN];
171 if (mac == NULL || req_len < EAP_SIM_MAC_LEN || mac < req ||
172 mac > req + req_len - EAP_SIM_MAC_LEN)
175 tmp = os_malloc(req_len);
185 os_memcpy(tmp, req, req_len);
186 os_memset(tmp + (mac - req), 0, EAP_SIM_MAC_LEN);
187 wpa_hexdump(MSG_MSGDUMP, "EAP-SIM: Verify MAC - msg", tmp, req_len);
188 wpa_hexdump(MSG_MSGDUMP, "EAP-SIM: Verify MAC - extra data",
190 wpa_hexdump_key(MSG_MSGDUMP, "EAP-SIM: Verify MAC - K_aut",
191 k_aut, EAP_SIM_K_AUT_LEN);
192 hmac_sha1_vector(k_aut, EAP_SIM_K_AUT_LEN, 2, addr, len, hmac);
193 wpa_hexdump(MSG_MSGDUMP, "EAP-SIM: Verify MAC: MAC",
194 hmac, EAP_SIM_MAC_LEN);
197 return (os_memcmp(hmac, mac, EAP_SIM_MAC_LEN) == 0) ? 0 : 1;
201 void eap_sim_add_mac(const u8 *k_aut, u8 *msg, size_t msg_len, u8 *mac,
202 const u8 *extra, size_t extra_len)
204 unsigned char hmac[SHA1_MAC_LEN];
214 os_memset(mac, 0, EAP_SIM_MAC_LEN);
215 wpa_hexdump(MSG_MSGDUMP, "EAP-SIM: Add MAC - msg", msg, msg_len);
216 wpa_hexdump(MSG_MSGDUMP, "EAP-SIM: Add MAC - extra data",
218 wpa_hexdump_key(MSG_MSGDUMP, "EAP-SIM: Add MAC - K_aut",
219 k_aut, EAP_SIM_K_AUT_LEN);
220 hmac_sha1_vector(k_aut, EAP_SIM_K_AUT_LEN, 2, addr, len, hmac);
221 os_memcpy(mac, hmac, EAP_SIM_MAC_LEN);
222 wpa_hexdump(MSG_MSGDUMP, "EAP-SIM: Add MAC: MAC",
223 mac, EAP_SIM_MAC_LEN);
227 int eap_sim_parse_attr(const u8 *start, const u8 *end,
228 struct eap_sim_attrs *attr, int aka, int encr)
230 const u8 *pos = start, *apos;
231 size_t alen, plen, i, list_len;
233 os_memset(attr, 0, sizeof(*attr));
234 attr->id_req = NO_ID_REQ;
235 attr->notification = -1;
237 attr->selected_version = -1;
238 attr->client_error_code = -1;
242 wpa_printf(MSG_INFO, "EAP-SIM: Attribute overflow(1)");
245 wpa_printf(MSG_MSGDUMP, "EAP-SIM: Attribute: Type=%d Len=%d",
247 if (pos + pos[1] * 4 > end) {
248 wpa_printf(MSG_INFO, "EAP-SIM: Attribute overflow "
249 "(pos=%p len=%d end=%p)",
250 pos, pos[1] * 4, end);
254 alen = pos[1] * 4 - 2;
255 wpa_hexdump(MSG_MSGDUMP, "EAP-SIM: Attribute data",
259 case EAP_SIM_AT_RAND:
260 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_RAND");
263 if ((!aka && (alen % GSM_RAND_LEN)) ||
264 (aka && alen != EAP_AKA_RAND_LEN)) {
265 wpa_printf(MSG_INFO, "EAP-SIM: Invalid AT_RAND"
267 (unsigned long) alen);
271 attr->num_chal = alen / GSM_RAND_LEN;
273 case EAP_SIM_AT_AUTN:
274 wpa_printf(MSG_DEBUG, "EAP-AKA: AT_AUTN");
276 wpa_printf(MSG_DEBUG, "EAP-SIM: "
277 "Unexpected AT_AUTN");
282 if (alen != EAP_AKA_AUTN_LEN) {
283 wpa_printf(MSG_INFO, "EAP-AKA: Invalid AT_AUTN"
285 (unsigned long) alen);
290 case EAP_SIM_AT_PADDING:
292 wpa_printf(MSG_ERROR, "EAP-SIM: Unencrypted "
296 wpa_printf(MSG_DEBUG, "EAP-SIM: (encr) AT_PADDING");
297 for (i = 2; i < alen; i++) {
299 wpa_printf(MSG_INFO, "EAP-SIM: (encr) "
300 "AT_PADDING used a non-zero"
302 wpa_hexdump(MSG_DEBUG, "EAP-SIM: "
303 "(encr) padding bytes",
309 case EAP_SIM_AT_NONCE_MT:
310 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_NONCE_MT");
311 if (alen != 2 + EAP_SIM_NONCE_MT_LEN) {
312 wpa_printf(MSG_INFO, "EAP-SIM: Invalid "
313 "AT_NONCE_MT length");
316 attr->nonce_mt = apos + 2;
318 case EAP_SIM_AT_PERMANENT_ID_REQ:
319 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_PERMANENT_ID_REQ");
320 attr->id_req = PERMANENT_ID;
323 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_MAC");
324 if (alen != 2 + EAP_SIM_MAC_LEN) {
325 wpa_printf(MSG_INFO, "EAP-SIM: Invalid AT_MAC "
329 attr->mac = apos + 2;
331 case EAP_SIM_AT_NOTIFICATION:
333 wpa_printf(MSG_INFO, "EAP-SIM: Invalid "
334 "AT_NOTIFICATION length %lu",
335 (unsigned long) alen);
338 attr->notification = apos[0] * 256 + apos[1];
339 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_NOTIFICATION %d",
342 case EAP_SIM_AT_ANY_ID_REQ:
343 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_ANY_ID_REQ");
344 attr->id_req = ANY_ID;
346 case EAP_SIM_AT_IDENTITY:
347 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_IDENTITY");
348 attr->identity = apos + 2;
349 attr->identity_len = alen - 2;
351 case EAP_SIM_AT_VERSION_LIST:
353 wpa_printf(MSG_DEBUG, "EAP-AKA: "
354 "Unexpected AT_VERSION_LIST");
357 list_len = apos[0] * 256 + apos[1];
358 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_VERSION_LIST");
359 if (list_len < 2 || list_len > alen - 2) {
360 wpa_printf(MSG_WARNING, "EAP-SIM: Invalid "
361 "AT_VERSION_LIST (list_len=%lu "
363 (unsigned long) list_len,
364 (unsigned long) alen);
367 attr->version_list = apos + 2;
368 attr->version_list_len = list_len;
370 case EAP_SIM_AT_SELECTED_VERSION:
371 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_SELECTED_VERSION");
373 wpa_printf(MSG_INFO, "EAP-SIM: Invalid "
374 "AT_SELECTED_VERSION length %lu",
375 (unsigned long) alen);
378 attr->selected_version = apos[0] * 256 + apos[1];
379 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_SELECTED_VERSION "
380 "%d", attr->selected_version);
382 case EAP_SIM_AT_FULLAUTH_ID_REQ:
383 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_FULLAUTH_ID_REQ");
384 attr->id_req = FULLAUTH_ID;
386 case EAP_SIM_AT_COUNTER:
388 wpa_printf(MSG_ERROR, "EAP-SIM: Unencrypted "
393 wpa_printf(MSG_INFO, "EAP-SIM: (encr) Invalid "
394 "AT_COUNTER (alen=%lu)",
395 (unsigned long) alen);
398 attr->counter = apos[0] * 256 + apos[1];
399 wpa_printf(MSG_DEBUG, "EAP-SIM: (encr) AT_COUNTER %d",
402 case EAP_SIM_AT_COUNTER_TOO_SMALL:
404 wpa_printf(MSG_ERROR, "EAP-SIM: Unencrypted "
405 "AT_COUNTER_TOO_SMALL");
409 wpa_printf(MSG_INFO, "EAP-SIM: (encr) Invalid "
410 "AT_COUNTER_TOO_SMALL (alen=%lu)",
411 (unsigned long) alen);
414 wpa_printf(MSG_DEBUG, "EAP-SIM: (encr) "
415 "AT_COUNTER_TOO_SMALL");
416 attr->counter_too_small = 1;
418 case EAP_SIM_AT_NONCE_S:
420 wpa_printf(MSG_ERROR, "EAP-SIM: Unencrypted "
424 wpa_printf(MSG_DEBUG, "EAP-SIM: (encr) "
426 if (alen != 2 + EAP_SIM_NONCE_S_LEN) {
427 wpa_printf(MSG_INFO, "EAP-SIM: (encr) Invalid "
428 "AT_NONCE_S (alen=%lu)",
429 (unsigned long) alen);
432 attr->nonce_s = apos + 2;
434 case EAP_SIM_AT_CLIENT_ERROR_CODE:
436 wpa_printf(MSG_INFO, "EAP-SIM: Invalid "
437 "AT_CLIENT_ERROR_CODE length %lu",
438 (unsigned long) alen);
441 attr->client_error_code = apos[0] * 256 + apos[1];
442 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_CLIENT_ERROR_CODE "
443 "%d", attr->client_error_code);
446 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_IV");
447 if (alen != 2 + EAP_SIM_MAC_LEN) {
448 wpa_printf(MSG_INFO, "EAP-SIM: Invalid AT_IV "
449 "length %lu", (unsigned long) alen);
454 case EAP_SIM_AT_ENCR_DATA:
455 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_ENCR_DATA");
456 attr->encr_data = apos + 2;
457 attr->encr_data_len = alen - 2;
458 if (attr->encr_data_len % 16) {
459 wpa_printf(MSG_INFO, "EAP-SIM: Invalid "
460 "AT_ENCR_DATA length %lu",
462 attr->encr_data_len);
466 case EAP_SIM_AT_NEXT_PSEUDONYM:
468 wpa_printf(MSG_ERROR, "EAP-SIM: Unencrypted "
469 "AT_NEXT_PSEUDONYM");
472 wpa_printf(MSG_DEBUG, "EAP-SIM: (encr) "
473 "AT_NEXT_PSEUDONYM");
474 plen = apos[0] * 256 + apos[1];
475 if (plen > alen - 2) {
476 wpa_printf(MSG_INFO, "EAP-SIM: (encr) Invalid"
477 " AT_NEXT_PSEUDONYM (actual"
478 " len %lu, attr len %lu)",
479 (unsigned long) plen,
480 (unsigned long) alen);
483 attr->next_pseudonym = pos + 4;
484 attr->next_pseudonym_len = plen;
486 case EAP_SIM_AT_NEXT_REAUTH_ID:
488 wpa_printf(MSG_ERROR, "EAP-SIM: Unencrypted "
489 "AT_NEXT_REAUTH_ID");
492 wpa_printf(MSG_DEBUG, "EAP-SIM: (encr) "
493 "AT_NEXT_REAUTH_ID");
494 plen = apos[0] * 256 + apos[1];
495 if (plen > alen - 2) {
496 wpa_printf(MSG_INFO, "EAP-SIM: (encr) Invalid"
497 " AT_NEXT_REAUTH_ID (actual"
498 " len %lu, attr len %lu)",
499 (unsigned long) plen,
500 (unsigned long) alen);
503 attr->next_reauth_id = pos + 4;
504 attr->next_reauth_id_len = plen;
507 wpa_printf(MSG_DEBUG, "EAP-SIM: AT_RES");
510 if (!aka || alen < EAP_AKA_MIN_RES_LEN ||
511 alen > EAP_AKA_MAX_RES_LEN) {
512 wpa_printf(MSG_INFO, "EAP-SIM: Invalid AT_RES "
514 (unsigned long) alen);
518 attr->res_len = alen;
520 case EAP_SIM_AT_AUTS:
521 wpa_printf(MSG_DEBUG, "EAP-AKA: AT_AUTS");
523 wpa_printf(MSG_DEBUG, "EAP-SIM: "
524 "Unexpected AT_AUTS");
527 if (alen != EAP_AKA_AUTS_LEN) {
528 wpa_printf(MSG_INFO, "EAP-AKA: Invalid AT_AUTS"
530 (unsigned long) alen);
537 wpa_printf(MSG_INFO, "EAP-SIM: Unrecognized "
538 "non-skippable attribute %d",
543 wpa_printf(MSG_DEBUG, "EAP-SIM: Unrecognized skippable"
544 " attribute %d ignored", pos[0]);
551 wpa_printf(MSG_DEBUG, "EAP-SIM: Attributes parsed successfully "
552 "(aka=%d encr=%d)", aka, encr);
558 u8 * eap_sim_parse_encr(const u8 *k_encr, const u8 *encr_data,
559 size_t encr_data_len, const u8 *iv,
560 struct eap_sim_attrs *attr, int aka)
565 wpa_printf(MSG_INFO, "EAP-SIM: Encrypted data, but no IV");
569 decrypted = os_malloc(encr_data_len);
570 if (decrypted == NULL)
572 os_memcpy(decrypted, encr_data, encr_data_len);
574 aes_128_cbc_decrypt(k_encr, iv, decrypted, encr_data_len);
575 wpa_hexdump(MSG_MSGDUMP, "EAP-SIM: Decrypted AT_ENCR_DATA",
576 decrypted, encr_data_len);
578 if (eap_sim_parse_attr(decrypted, decrypted + encr_data_len, attr,
580 wpa_printf(MSG_INFO, "EAP-SIM: (encr) Failed to parse "
581 "decrypted AT_ENCR_DATA");
590 #define EAP_SIM_INIT_LEN 128
594 size_t buf_len, used;
595 size_t mac, iv, encr; /* index from buf */
599 struct eap_sim_msg * eap_sim_msg_init(int code, int id, int type, int subtype)
601 struct eap_sim_msg *msg;
605 msg = os_zalloc(sizeof(*msg));
609 msg->buf = os_zalloc(EAP_SIM_INIT_LEN);
610 if (msg->buf == NULL) {
614 msg->buf_len = EAP_SIM_INIT_LEN;
615 eap = (struct eap_hdr *) msg->buf;
617 eap->identifier = id;
618 msg->used = sizeof(*eap);
620 pos = (u8 *) (eap + 1);
623 *pos++ = 0; /* Reserved */
624 *pos++ = 0; /* Reserved */
631 u8 * eap_sim_msg_finish(struct eap_sim_msg *msg, size_t *len, const u8 *k_aut,
632 const u8 *extra, size_t extra_len)
640 eap = (struct eap_hdr *) msg->buf;
641 eap->length = host_to_be16(msg->used);
643 if (k_aut && msg->mac) {
644 eap_sim_add_mac(k_aut, msg->buf, msg->used,
645 msg->buf + msg->mac, extra, extra_len);
655 void eap_sim_msg_free(struct eap_sim_msg *msg)
664 static int eap_sim_msg_resize(struct eap_sim_msg *msg, size_t add_len)
666 if (msg->used + add_len > msg->buf_len) {
667 u8 *nbuf = os_realloc(msg->buf, msg->used + add_len);
671 msg->buf_len = msg->used + add_len;
677 u8 * eap_sim_msg_add_full(struct eap_sim_msg *msg, u8 attr,
678 const u8 *data, size_t len)
680 int attr_len = 2 + len;
687 pad_len = (4 - attr_len % 4) % 4;
689 if (eap_sim_msg_resize(msg, attr_len))
691 start = pos = msg->buf + msg->used;
693 *pos++ = attr_len / 4;
694 os_memcpy(pos, data, len);
697 os_memset(pos, 0, pad_len);
699 msg->used += attr_len;
704 u8 * eap_sim_msg_add(struct eap_sim_msg *msg, u8 attr, u16 value,
705 const u8 *data, size_t len)
707 int attr_len = 4 + len;
714 pad_len = (4 - attr_len % 4) % 4;
716 if (eap_sim_msg_resize(msg, attr_len))
718 start = pos = msg->buf + msg->used;
720 *pos++ = attr_len / 4;
721 WPA_PUT_BE16(pos, value);
724 os_memcpy(pos, data, len);
727 os_memset(pos, 0, pad_len);
729 msg->used += attr_len;
734 u8 * eap_sim_msg_add_mac(struct eap_sim_msg *msg, u8 attr)
736 u8 *pos = eap_sim_msg_add(msg, attr, 0, NULL, EAP_SIM_MAC_LEN);
738 msg->mac = (pos - msg->buf) + 4;
743 int eap_sim_msg_add_encr_start(struct eap_sim_msg *msg, u8 attr_iv,
746 u8 *pos = eap_sim_msg_add(msg, attr_iv, 0, NULL, EAP_SIM_IV_LEN);
749 msg->iv = (pos - msg->buf) + 4;
750 if (hostapd_get_rand(msg->buf + msg->iv, EAP_SIM_IV_LEN)) {
755 pos = eap_sim_msg_add(msg, attr_encr, 0, NULL, 0);
760 msg->encr = pos - msg->buf;
766 int eap_sim_msg_add_encr_end(struct eap_sim_msg *msg, u8 *k_encr, int attr_pad)
770 if (msg == NULL || k_encr == NULL || msg->iv == 0 || msg->encr == 0)
773 encr_len = msg->used - msg->encr - 4;
776 int pad_len = 16 - (encr_len % 16);
778 wpa_printf(MSG_WARNING, "EAP-SIM: "
779 "eap_sim_msg_add_encr_end - invalid pad_len"
783 wpa_printf(MSG_DEBUG, " *AT_PADDING");
784 pos = eap_sim_msg_add(msg, attr_pad, 0, NULL, pad_len - 4);
787 os_memset(pos + 4, 0, pad_len - 4);
790 wpa_printf(MSG_DEBUG, " (AT_ENCR_DATA data len %lu)",
791 (unsigned long) encr_len);
792 msg->buf[msg->encr + 1] = encr_len / 4 + 1;
793 aes_128_cbc_encrypt(k_encr, msg->buf + msg->iv,
794 msg->buf + msg->encr + 4, encr_len);
800 void eap_sim_report_notification(void *msg_ctx, int notification, int aka)
802 #ifndef CONFIG_NO_STDOUT_DEBUG
803 const char *type = aka ? "AKA" : "SIM";
804 #endif /* CONFIG_NO_STDOUT_DEBUG */
806 switch (notification) {
807 case EAP_SIM_GENERAL_FAILURE_AFTER_AUTH:
808 wpa_printf(MSG_WARNING, "EAP-%s: General failure "
809 "notification (after authentication)", type);
811 case EAP_SIM_TEMPORARILY_DENIED:
812 wpa_printf(MSG_WARNING, "EAP-%s: Failure notification: "
813 "User has been temporarily denied access to the "
814 "requested service", type);
816 case EAP_SIM_NOT_SUBSCRIBED:
817 wpa_printf(MSG_WARNING, "EAP-%s: Failure notification: "
818 "User has not subscribed to the requested service",
821 case EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH:
822 wpa_printf(MSG_WARNING, "EAP-%s: General failure "
823 "notification (before authentication)", type);
825 case EAP_SIM_SUCCESS:
826 wpa_printf(MSG_INFO, "EAP-%s: Successful authentication "
827 "notification", type);
830 if (notification >= 32768) {
831 wpa_printf(MSG_INFO, "EAP-%s: Unrecognized "
832 "non-failure notification %d",
835 wpa_printf(MSG_WARNING, "EAP-%s: Unrecognized "
836 "failure notification %d",