2 * EAP peer method: EAP-SIM (RFC 4186)
3 * Copyright (c) 2004-2012, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
12 #include "pcsc_funcs.h"
13 #include "crypto/milenage.h"
14 #include "crypto/random.h"
15 #include "eap_peer/eap_i.h"
16 #include "eap_config.h"
17 #include "eap_common/eap_sim_common.h"
24 size_t min_num_chal
, num_chal
;
26 u8 kc
[3][EAP_SIM_KC_LEN
];
27 u8 sres
[3][EAP_SIM_SRES_LEN
];
28 u8 nonce_mt
[EAP_SIM_NONCE_MT_LEN
], nonce_s
[EAP_SIM_NONCE_S_LEN
];
29 u8 mk
[EAP_SIM_MK_LEN
];
30 u8 k_aut
[EAP_SIM_K_AUT_LEN
];
31 u8 k_encr
[EAP_SIM_K_ENCR_LEN
];
32 u8 msk
[EAP_SIM_KEYING_DATA_LEN
];
33 u8 emsk
[EAP_EMSK_LEN
];
34 u8 rand
[3][GSM_RAND_LEN
];
35 u8 reauth_mac
[EAP_SIM_MAC_LEN
];
37 int num_id_req
, num_notification
;
43 unsigned int counter
, counter_too_small
;
44 u8
*last_eap_identity
;
45 size_t last_eap_identity_len
;
47 CONTINUE
, RESULT_SUCCESS
, SUCCESS
, FAILURE
49 int result_ind
, use_result_ind
;
55 #ifndef CONFIG_NO_STDOUT_DEBUG
56 static const char * eap_sim_state_txt(int state
)
62 return "RESULT_SUCCESS";
71 #endif /* CONFIG_NO_STDOUT_DEBUG */
74 static void eap_sim_state(struct eap_sim_data
*data
, int state
)
76 wpa_printf(MSG_DEBUG
, "EAP-SIM: %s -> %s",
77 eap_sim_state_txt(data
->state
),
78 eap_sim_state_txt(state
));
83 static void * eap_sim_init(struct eap_sm
*sm
)
85 struct eap_sim_data
*data
;
86 struct eap_peer_config
*config
= eap_get_config(sm
);
88 data
= os_zalloc(sizeof(*data
));
92 if (random_get_bytes(data
->nonce_mt
, EAP_SIM_NONCE_MT_LEN
)) {
93 wpa_printf(MSG_WARNING
, "EAP-SIM: Failed to get random data "
99 /* Zero is a valid error code, so we need to initialize */
100 data
->error_code
= NO_EAP_METHOD_ERROR
;
102 data
->min_num_chal
= 2;
103 if (config
&& config
->phase1
) {
104 char *pos
= os_strstr(config
->phase1
, "sim_min_num_chal=");
106 data
->min_num_chal
= atoi(pos
+ 17);
107 if (data
->min_num_chal
< 2 || data
->min_num_chal
> 3) {
108 wpa_printf(MSG_WARNING
, "EAP-SIM: Invalid "
109 "sim_min_num_chal configuration "
110 "(%lu, expected 2 or 3)",
111 (unsigned long) data
->min_num_chal
);
115 wpa_printf(MSG_DEBUG
, "EAP-SIM: Set minimum number of "
117 (unsigned long) data
->min_num_chal
);
120 data
->result_ind
= os_strstr(config
->phase1
, "result_ind=1") !=
124 data
->use_pseudonym
= !sm
->init_phase2
;
125 if (config
&& config
->anonymous_identity
&& data
->use_pseudonym
) {
126 data
->pseudonym
= os_malloc(config
->anonymous_identity_len
);
127 if (data
->pseudonym
) {
128 os_memcpy(data
->pseudonym
, config
->anonymous_identity
,
129 config
->anonymous_identity_len
);
130 data
->pseudonym_len
= config
->anonymous_identity_len
;
134 eap_sim_state(data
, CONTINUE
);
140 static void eap_sim_clear_keys(struct eap_sim_data
*data
, int reauth
)
143 os_memset(data
->mk
, 0, EAP_SIM_MK_LEN
);
144 os_memset(data
->k_aut
, 0, EAP_SIM_K_AUT_LEN
);
145 os_memset(data
->k_encr
, 0, EAP_SIM_K_ENCR_LEN
);
147 os_memset(data
->kc
, 0, 3 * EAP_SIM_KC_LEN
);
148 os_memset(data
->sres
, 0, 3 * EAP_SIM_SRES_LEN
);
149 os_memset(data
->msk
, 0, EAP_SIM_KEYING_DATA_LEN
);
150 os_memset(data
->emsk
, 0, EAP_EMSK_LEN
);
154 static void eap_sim_deinit(struct eap_sm
*sm
, void *priv
)
156 struct eap_sim_data
*data
= priv
;
158 os_free(data
->ver_list
);
159 os_free(data
->pseudonym
);
160 os_free(data
->reauth_id
);
161 os_free(data
->last_eap_identity
);
162 eap_sim_clear_keys(data
, 0);
168 static int eap_sim_ext_sim_req(struct eap_sm
*sm
, struct eap_sim_data
*data
)
170 char req
[200], *pos
, *end
;
173 wpa_printf(MSG_DEBUG
, "EAP-SIM: Use external SIM processing");
175 end
= pos
+ sizeof(req
);
176 pos
+= os_snprintf(pos
, end
- pos
, "GSM-AUTH");
177 for (i
= 0; i
< data
->num_chal
; i
++) {
178 pos
+= os_snprintf(pos
, end
- pos
, ":");
179 pos
+= wpa_snprintf_hex(pos
, end
- pos
, data
->rand
[i
],
183 eap_sm_request_sim(sm
, req
);
188 static int eap_sim_ext_sim_result(struct eap_sm
*sm
, struct eap_sim_data
*data
,
189 struct eap_peer_config
*conf
)
194 wpa_printf(MSG_DEBUG
,
195 "EAP-SIM: Use result from external SIM processing");
197 resp
= conf
->external_sim_resp
;
198 conf
->external_sim_resp
= NULL
;
200 if (os_strncmp(resp
, "GSM-AUTH:", 9) != 0) {
201 wpa_printf(MSG_DEBUG
, "EAP-SIM: Unrecognized external SIM processing response");
207 for (i
= 0; i
< data
->num_chal
; i
++) {
208 wpa_hexdump(MSG_DEBUG
, "EAP-SIM: RAND",
209 data
->rand
[i
], GSM_RAND_LEN
);
211 if (hexstr2bin(pos
, data
->kc
[i
], EAP_SIM_KC_LEN
) < 0)
213 wpa_hexdump_key(MSG_DEBUG
, "EAP-SIM: Kc",
214 data
->kc
[i
], EAP_SIM_KC_LEN
);
215 pos
+= EAP_SIM_KC_LEN
* 2;
220 if (hexstr2bin(pos
, data
->sres
[i
], EAP_SIM_SRES_LEN
) < 0)
222 wpa_hexdump_key(MSG_DEBUG
, "EAP-SIM: SRES",
223 data
->sres
[i
], EAP_SIM_SRES_LEN
);
224 pos
+= EAP_SIM_SRES_LEN
* 2;
225 if (i
+ 1 < data
->num_chal
) {
236 wpa_printf(MSG_DEBUG
, "EAP-SIM: Invalid external SIM processing GSM-AUTH response");
242 static int eap_sim_gsm_auth(struct eap_sm
*sm
, struct eap_sim_data
*data
)
244 struct eap_peer_config
*conf
;
246 wpa_printf(MSG_DEBUG
, "EAP-SIM: GSM authentication algorithm");
248 conf
= eap_get_config(sm
);
252 if (sm
->external_sim
) {
253 if (conf
->external_sim_resp
)
254 return eap_sim_ext_sim_result(sm
, data
, conf
);
256 return eap_sim_ext_sim_req(sm
, data
);
261 if (scard_gsm_auth(sm
->scard_ctx
, data
->rand
[0],
262 data
->sres
[0], data
->kc
[0]) ||
263 scard_gsm_auth(sm
->scard_ctx
, data
->rand
[1],
264 data
->sres
[1], data
->kc
[1]) ||
265 (data
->num_chal
> 2 &&
266 scard_gsm_auth(sm
->scard_ctx
, data
->rand
[2],
267 data
->sres
[2], data
->kc
[2]))) {
268 wpa_printf(MSG_DEBUG
, "EAP-SIM: GSM SIM "
269 "authentication could not be completed");
274 #endif /* PCSC_FUNCS */
276 #ifdef CONFIG_SIM_SIMULATOR
277 if (conf
->password
) {
281 wpa_printf(MSG_DEBUG
, "EAP-SIM: Use internal GSM-Milenage "
282 "implementation for authentication");
283 if (conf
->password_len
< 65) {
284 wpa_printf(MSG_DEBUG
, "EAP-SIM: invalid GSM-Milenage "
288 pos
= (const char *) conf
->password
;
289 if (hexstr2bin(pos
, k
, 16))
296 if (hexstr2bin(pos
, opc
, 16))
299 for (i
= 0; i
< data
->num_chal
; i
++) {
300 if (gsm_milenage(opc
, k
, data
->rand
[i
],
301 data
->sres
[i
], data
->kc
[i
])) {
302 wpa_printf(MSG_DEBUG
, "EAP-SIM: "
303 "GSM-Milenage authentication "
304 "could not be completed");
307 wpa_hexdump(MSG_DEBUG
, "EAP-SIM: RAND",
308 data
->rand
[i
], GSM_RAND_LEN
);
309 wpa_hexdump_key(MSG_DEBUG
, "EAP-SIM: SRES",
310 data
->sres
[i
], EAP_SIM_SRES_LEN
);
311 wpa_hexdump_key(MSG_DEBUG
, "EAP-SIM: Kc",
312 data
->kc
[i
], EAP_SIM_KC_LEN
);
316 #endif /* CONFIG_SIM_SIMULATOR */
318 #ifdef CONFIG_SIM_HARDCODED
319 /* These hardcoded Kc and SRES values are used for testing. RAND to
320 * KC/SREC mapping is very bogus as far as real authentication is
321 * concerned, but it is quite useful for cases where the AS is rotating
322 * the order of pre-configured values. */
326 wpa_printf(MSG_DEBUG
, "EAP-SIM: Use hardcoded Kc and SRES "
327 "values for testing");
329 for (i
= 0; i
< data
->num_chal
; i
++) {
330 if (data
->rand
[i
][0] == 0xaa) {
331 os_memcpy(data
->kc
[i
],
332 "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7",
334 os_memcpy(data
->sres
[i
], "\xd1\xd2\xd3\xd4",
336 } else if (data
->rand
[i
][0] == 0xbb) {
337 os_memcpy(data
->kc
[i
],
338 "\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7",
340 os_memcpy(data
->sres
[i
], "\xe1\xe2\xe3\xe4",
343 os_memcpy(data
->kc
[i
],
344 "\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7",
346 os_memcpy(data
->sres
[i
], "\xf1\xf2\xf3\xf4",
354 #else /* CONFIG_SIM_HARDCODED */
356 wpa_printf(MSG_DEBUG
, "EAP-SIM: No GSM authentication algorithm "
360 #endif /* CONFIG_SIM_HARDCODED */
364 static int eap_sim_supported_ver(int version
)
366 return version
== EAP_SIM_VERSION
;
370 #define CLEAR_PSEUDONYM 0x01
371 #define CLEAR_REAUTH_ID 0x02
372 #define CLEAR_EAP_ID 0x04
374 static void eap_sim_clear_identities(struct eap_sm
*sm
,
375 struct eap_sim_data
*data
, int id
)
377 if ((id
& CLEAR_PSEUDONYM
) && data
->pseudonym
) {
378 wpa_printf(MSG_DEBUG
, "EAP-SIM: forgetting old pseudonym");
379 os_free(data
->pseudonym
);
380 data
->pseudonym
= NULL
;
381 data
->pseudonym_len
= 0;
382 if (data
->use_pseudonym
)
383 eap_set_anon_id(sm
, NULL
, 0);
385 if ((id
& CLEAR_REAUTH_ID
) && data
->reauth_id
) {
386 wpa_printf(MSG_DEBUG
, "EAP-SIM: forgetting old reauth_id");
387 os_free(data
->reauth_id
);
388 data
->reauth_id
= NULL
;
389 data
->reauth_id_len
= 0;
391 if ((id
& CLEAR_EAP_ID
) && data
->last_eap_identity
) {
392 wpa_printf(MSG_DEBUG
, "EAP-SIM: forgetting old eap_id");
393 os_free(data
->last_eap_identity
);
394 data
->last_eap_identity
= NULL
;
395 data
->last_eap_identity_len
= 0;
400 static int eap_sim_learn_ids(struct eap_sm
*sm
, struct eap_sim_data
*data
,
401 struct eap_sim_attrs
*attr
)
403 if (attr
->next_pseudonym
) {
404 const u8
*identity
= NULL
;
405 size_t identity_len
= 0;
406 const u8
*realm
= NULL
;
407 size_t realm_len
= 0;
409 wpa_hexdump_ascii(MSG_DEBUG
,
410 "EAP-SIM: (encr) AT_NEXT_PSEUDONYM",
411 attr
->next_pseudonym
,
412 attr
->next_pseudonym_len
);
413 os_free(data
->pseudonym
);
414 /* Look for the realm of the permanent identity */
415 identity
= eap_get_config_identity(sm
, &identity_len
);
417 for (realm
= identity
, realm_len
= identity_len
;
418 realm_len
> 0; realm_len
--, realm
++) {
423 data
->pseudonym
= os_malloc(attr
->next_pseudonym_len
+
425 if (data
->pseudonym
== NULL
) {
426 wpa_printf(MSG_INFO
, "EAP-SIM: (encr) No memory for "
428 data
->pseudonym_len
= 0;
431 os_memcpy(data
->pseudonym
, attr
->next_pseudonym
,
432 attr
->next_pseudonym_len
);
434 os_memcpy(data
->pseudonym
+ attr
->next_pseudonym_len
,
437 data
->pseudonym_len
= attr
->next_pseudonym_len
+ realm_len
;
438 if (data
->use_pseudonym
)
439 eap_set_anon_id(sm
, data
->pseudonym
,
440 data
->pseudonym_len
);
443 if (attr
->next_reauth_id
) {
444 os_free(data
->reauth_id
);
445 data
->reauth_id
= os_memdup(attr
->next_reauth_id
,
446 attr
->next_reauth_id_len
);
447 if (data
->reauth_id
== NULL
) {
448 wpa_printf(MSG_INFO
, "EAP-SIM: (encr) No memory for "
450 data
->reauth_id_len
= 0;
453 data
->reauth_id_len
= attr
->next_reauth_id_len
;
454 wpa_hexdump_ascii(MSG_DEBUG
,
455 "EAP-SIM: (encr) AT_NEXT_REAUTH_ID",
457 data
->reauth_id_len
);
464 static struct wpabuf
* eap_sim_client_error(struct eap_sim_data
*data
, u8 id
,
467 struct eap_sim_msg
*msg
;
469 eap_sim_state(data
, FAILURE
);
470 data
->num_id_req
= 0;
471 data
->num_notification
= 0;
473 wpa_printf(MSG_DEBUG
, "EAP-SIM: Send Client-Error (error code %d)",
475 msg
= eap_sim_msg_init(EAP_CODE_RESPONSE
, id
, EAP_TYPE_SIM
,
476 EAP_SIM_SUBTYPE_CLIENT_ERROR
);
477 eap_sim_msg_add(msg
, EAP_SIM_AT_CLIENT_ERROR_CODE
, err
, NULL
, 0);
478 return eap_sim_msg_finish(msg
, EAP_TYPE_SIM
, NULL
, NULL
, 0);
482 static struct wpabuf
* eap_sim_response_start(struct eap_sm
*sm
,
483 struct eap_sim_data
*data
, u8 id
,
484 enum eap_sim_id_req id_req
)
486 const u8
*identity
= NULL
;
487 size_t identity_len
= 0;
488 struct eap_sim_msg
*msg
;
491 if (id_req
== ANY_ID
&& data
->reauth_id
) {
492 identity
= data
->reauth_id
;
493 identity_len
= data
->reauth_id_len
;
495 } else if ((id_req
== ANY_ID
|| id_req
== FULLAUTH_ID
) &&
497 !eap_sim_anonymous_username(data
->pseudonym
,
498 data
->pseudonym_len
)) {
499 identity
= data
->pseudonym
;
500 identity_len
= data
->pseudonym_len
;
501 eap_sim_clear_identities(sm
, data
, CLEAR_REAUTH_ID
);
502 } else if (id_req
!= NO_ID_REQ
) {
503 identity
= eap_get_config_identity(sm
, &identity_len
);
505 int ids
= CLEAR_PSEUDONYM
| CLEAR_REAUTH_ID
;
507 if (data
->pseudonym
&&
508 eap_sim_anonymous_username(data
->pseudonym
,
509 data
->pseudonym_len
))
510 ids
&= ~CLEAR_PSEUDONYM
;
511 eap_sim_clear_identities(sm
, data
, ids
);
514 if (id_req
!= NO_ID_REQ
)
515 eap_sim_clear_identities(sm
, data
, CLEAR_EAP_ID
);
517 wpa_printf(MSG_DEBUG
, "Generating EAP-SIM Start (id=%d)", id
);
518 msg
= eap_sim_msg_init(EAP_CODE_RESPONSE
, id
,
519 EAP_TYPE_SIM
, EAP_SIM_SUBTYPE_START
);
521 wpa_hexdump(MSG_DEBUG
, " AT_NONCE_MT",
522 data
->nonce_mt
, EAP_SIM_NONCE_MT_LEN
);
523 eap_sim_msg_add(msg
, EAP_SIM_AT_NONCE_MT
, 0,
524 data
->nonce_mt
, EAP_SIM_NONCE_MT_LEN
);
525 wpa_printf(MSG_DEBUG
, " AT_SELECTED_VERSION %d",
526 data
->selected_version
);
527 eap_sim_msg_add(msg
, EAP_SIM_AT_SELECTED_VERSION
,
528 data
->selected_version
, NULL
, 0);
532 wpa_hexdump_ascii(MSG_DEBUG
, " AT_IDENTITY",
533 identity
, identity_len
);
534 eap_sim_msg_add(msg
, EAP_SIM_AT_IDENTITY
, identity_len
,
535 identity
, identity_len
);
538 return eap_sim_msg_finish(msg
, EAP_TYPE_SIM
, NULL
, NULL
, 0);
542 static struct wpabuf
* eap_sim_response_challenge(struct eap_sim_data
*data
,
545 struct eap_sim_msg
*msg
;
547 wpa_printf(MSG_DEBUG
, "Generating EAP-SIM Challenge (id=%d)", id
);
548 msg
= eap_sim_msg_init(EAP_CODE_RESPONSE
, id
, EAP_TYPE_SIM
,
549 EAP_SIM_SUBTYPE_CHALLENGE
);
550 if (data
->use_result_ind
) {
551 wpa_printf(MSG_DEBUG
, " AT_RESULT_IND");
552 eap_sim_msg_add(msg
, EAP_SIM_AT_RESULT_IND
, 0, NULL
, 0);
554 wpa_printf(MSG_DEBUG
, " AT_MAC");
555 eap_sim_msg_add_mac(msg
, EAP_SIM_AT_MAC
);
556 return eap_sim_msg_finish(msg
, EAP_TYPE_SIM
, data
->k_aut
,
558 data
->num_chal
* EAP_SIM_SRES_LEN
);
562 static struct wpabuf
* eap_sim_response_reauth(struct eap_sim_data
*data
,
563 u8 id
, int counter_too_small
,
566 struct eap_sim_msg
*msg
;
567 unsigned int counter
;
569 wpa_printf(MSG_DEBUG
, "Generating EAP-SIM Reauthentication (id=%d)",
571 msg
= eap_sim_msg_init(EAP_CODE_RESPONSE
, id
, EAP_TYPE_SIM
,
572 EAP_SIM_SUBTYPE_REAUTHENTICATION
);
573 wpa_printf(MSG_DEBUG
, " AT_IV");
574 wpa_printf(MSG_DEBUG
, " AT_ENCR_DATA");
575 eap_sim_msg_add_encr_start(msg
, EAP_SIM_AT_IV
, EAP_SIM_AT_ENCR_DATA
);
577 if (counter_too_small
) {
578 wpa_printf(MSG_DEBUG
, " *AT_COUNTER_TOO_SMALL");
579 eap_sim_msg_add(msg
, EAP_SIM_AT_COUNTER_TOO_SMALL
, 0, NULL
, 0);
580 counter
= data
->counter_too_small
;
582 counter
= data
->counter
;
584 wpa_printf(MSG_DEBUG
, " *AT_COUNTER %d", counter
);
585 eap_sim_msg_add(msg
, EAP_SIM_AT_COUNTER
, counter
, NULL
, 0);
587 if (eap_sim_msg_add_encr_end(msg
, data
->k_encr
, EAP_SIM_AT_PADDING
)) {
588 wpa_printf(MSG_WARNING
, "EAP-SIM: Failed to encrypt "
590 eap_sim_msg_free(msg
);
593 if (data
->use_result_ind
) {
594 wpa_printf(MSG_DEBUG
, " AT_RESULT_IND");
595 eap_sim_msg_add(msg
, EAP_SIM_AT_RESULT_IND
, 0, NULL
, 0);
597 wpa_printf(MSG_DEBUG
, " AT_MAC");
598 eap_sim_msg_add_mac(msg
, EAP_SIM_AT_MAC
);
599 return eap_sim_msg_finish(msg
, EAP_TYPE_SIM
, data
->k_aut
, nonce_s
,
600 EAP_SIM_NONCE_S_LEN
);
604 static struct wpabuf
* eap_sim_response_notification(struct eap_sim_data
*data
,
605 u8 id
, u16 notification
)
607 struct eap_sim_msg
*msg
;
608 u8
*k_aut
= (notification
& 0x4000) == 0 ? data
->k_aut
: NULL
;
610 wpa_printf(MSG_DEBUG
, "Generating EAP-SIM Notification (id=%d)", id
);
611 msg
= eap_sim_msg_init(EAP_CODE_RESPONSE
, id
,
612 EAP_TYPE_SIM
, EAP_SIM_SUBTYPE_NOTIFICATION
);
613 if (k_aut
&& data
->reauth
) {
614 wpa_printf(MSG_DEBUG
, " AT_IV");
615 wpa_printf(MSG_DEBUG
, " AT_ENCR_DATA");
616 eap_sim_msg_add_encr_start(msg
, EAP_SIM_AT_IV
,
617 EAP_SIM_AT_ENCR_DATA
);
618 wpa_printf(MSG_DEBUG
, " *AT_COUNTER %d", data
->counter
);
619 eap_sim_msg_add(msg
, EAP_SIM_AT_COUNTER
, data
->counter
,
621 if (eap_sim_msg_add_encr_end(msg
, data
->k_encr
,
622 EAP_SIM_AT_PADDING
)) {
623 wpa_printf(MSG_WARNING
, "EAP-SIM: Failed to encrypt "
625 eap_sim_msg_free(msg
);
630 wpa_printf(MSG_DEBUG
, " AT_MAC");
631 eap_sim_msg_add_mac(msg
, EAP_SIM_AT_MAC
);
633 return eap_sim_msg_finish(msg
, EAP_TYPE_SIM
, k_aut
, (u8
*) "", 0);
637 static struct wpabuf
* eap_sim_process_start(struct eap_sm
*sm
,
638 struct eap_sim_data
*data
, u8 id
,
639 struct eap_sim_attrs
*attr
)
641 int selected_version
= -1, id_error
;
645 wpa_printf(MSG_DEBUG
, "EAP-SIM: subtype Start");
646 if (attr
->version_list
== NULL
) {
647 wpa_printf(MSG_INFO
, "EAP-SIM: No AT_VERSION_LIST in "
649 return eap_sim_client_error(data
, id
,
650 EAP_SIM_UNSUPPORTED_VERSION
);
653 os_free(data
->ver_list
);
654 data
->ver_list
= os_memdup(attr
->version_list
, attr
->version_list_len
);
655 if (data
->ver_list
== NULL
) {
656 wpa_printf(MSG_DEBUG
, "EAP-SIM: Failed to allocate "
657 "memory for version list");
658 return eap_sim_client_error(data
, id
,
659 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
661 data
->ver_list_len
= attr
->version_list_len
;
662 pos
= data
->ver_list
;
663 for (i
= 0; i
< data
->ver_list_len
/ 2; i
++) {
664 int ver
= pos
[0] * 256 + pos
[1];
666 if (eap_sim_supported_ver(ver
)) {
667 selected_version
= ver
;
671 if (selected_version
< 0) {
672 wpa_printf(MSG_INFO
, "EAP-SIM: Could not find a supported "
674 return eap_sim_client_error(data
, id
,
675 EAP_SIM_UNSUPPORTED_VERSION
);
677 wpa_printf(MSG_DEBUG
, "EAP-SIM: Selected Version %d",
679 data
->selected_version
= selected_version
;
682 switch (attr
->id_req
) {
686 if (data
->num_id_req
> 0)
691 if (data
->num_id_req
> 1)
696 if (data
->num_id_req
> 2)
702 wpa_printf(MSG_INFO
, "EAP-SIM: Too many ID requests "
703 "used within one authentication");
704 return eap_sim_client_error(data
, id
,
705 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
708 return eap_sim_response_start(sm
, data
, id
, attr
->id_req
);
712 static struct wpabuf
* eap_sim_process_challenge(struct eap_sm
*sm
,
713 struct eap_sim_data
*data
,
715 const struct wpabuf
*reqData
,
716 struct eap_sim_attrs
*attr
)
720 struct eap_sim_attrs eattr
;
723 wpa_printf(MSG_DEBUG
, "EAP-SIM: subtype Challenge");
725 if (!attr
->mac
|| !attr
->rand
) {
726 wpa_printf(MSG_WARNING
, "EAP-SIM: Challenge message "
727 "did not include%s%s",
728 !attr
->mac
? " AT_MAC" : "",
729 !attr
->rand
? " AT_RAND" : "");
730 return eap_sim_client_error(data
, id
,
731 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
734 wpa_printf(MSG_DEBUG
, "EAP-SIM: %lu challenges",
735 (unsigned long) attr
->num_chal
);
736 if (attr
->num_chal
< data
->min_num_chal
) {
737 wpa_printf(MSG_INFO
, "EAP-SIM: Insufficient number of "
738 "challenges (%lu)", (unsigned long) attr
->num_chal
);
739 return eap_sim_client_error(data
, id
,
740 EAP_SIM_INSUFFICIENT_NUM_OF_CHAL
);
742 if (attr
->num_chal
> 3) {
743 wpa_printf(MSG_INFO
, "EAP-SIM: Too many challenges "
744 "(%lu)", (unsigned long) attr
->num_chal
);
745 return eap_sim_client_error(data
, id
,
746 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
749 /* Verify that RANDs are different */
750 if (os_memcmp(attr
->rand
, attr
->rand
+ GSM_RAND_LEN
,
751 GSM_RAND_LEN
) == 0 ||
752 (attr
->num_chal
> 2 &&
753 (os_memcmp(attr
->rand
, attr
->rand
+ 2 * GSM_RAND_LEN
,
754 GSM_RAND_LEN
) == 0 ||
755 os_memcmp(attr
->rand
+ GSM_RAND_LEN
,
756 attr
->rand
+ 2 * GSM_RAND_LEN
,
757 GSM_RAND_LEN
) == 0))) {
758 wpa_printf(MSG_INFO
, "EAP-SIM: Same RAND used multiple times");
759 return eap_sim_client_error(data
, id
,
760 EAP_SIM_RAND_NOT_FRESH
);
763 os_memcpy(data
->rand
, attr
->rand
, attr
->num_chal
* GSM_RAND_LEN
);
764 data
->num_chal
= attr
->num_chal
;
766 res
= eap_sim_gsm_auth(sm
, data
);
768 wpa_printf(MSG_DEBUG
, "EAP-SIM: Wait for external SIM processing");
772 wpa_printf(MSG_WARNING
, "EAP-SIM: GSM authentication failed");
773 return eap_sim_client_error(data
, id
,
774 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
776 if (data
->last_eap_identity
) {
777 identity
= data
->last_eap_identity
;
778 identity_len
= data
->last_eap_identity_len
;
779 } else if (data
->pseudonym
&&
780 !eap_sim_anonymous_username(data
->pseudonym
,
781 data
->pseudonym_len
)) {
782 identity
= data
->pseudonym
;
783 identity_len
= data
->pseudonym_len
;
785 struct eap_peer_config
*config
;
787 config
= eap_get_config(sm
);
788 if (config
&& config
->imsi_identity
) {
789 identity
= config
->imsi_identity
;
790 identity_len
= config
->imsi_identity_len
;
792 identity
= eap_get_config_identity(sm
, &identity_len
);
795 wpa_hexdump_ascii(MSG_DEBUG
, "EAP-SIM: Selected identity for MK "
796 "derivation", identity
, identity_len
);
797 eap_sim_derive_mk(identity
, identity_len
, data
->nonce_mt
,
798 data
->selected_version
, data
->ver_list
,
799 data
->ver_list_len
, data
->num_chal
,
800 (const u8
*) data
->kc
, data
->mk
);
801 eap_sim_derive_keys(data
->mk
, data
->k_encr
, data
->k_aut
, data
->msk
,
803 if (eap_sim_verify_mac(data
->k_aut
, reqData
, attr
->mac
, data
->nonce_mt
,
804 EAP_SIM_NONCE_MT_LEN
)) {
805 wpa_printf(MSG_WARNING
, "EAP-SIM: Challenge message "
806 "used invalid AT_MAC");
809 "TEST: Ignore AT_MAC mismatch for fuzz testing");
810 #else /* TEST_FUZZ */
811 return eap_sim_client_error(data
, id
,
812 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
813 #endif /* TEST_FUZZ */
816 /* Old reauthentication identity must not be used anymore. In
817 * other words, if no new reauth identity is received, full
818 * authentication will be used on next reauthentication (using
819 * pseudonym identity or permanent identity). */
820 eap_sim_clear_identities(sm
, data
, CLEAR_REAUTH_ID
| CLEAR_EAP_ID
);
822 if (attr
->encr_data
) {
824 decrypted
= eap_sim_parse_encr(data
->k_encr
, attr
->encr_data
,
825 attr
->encr_data_len
, attr
->iv
,
827 if (decrypted
== NULL
) {
828 return eap_sim_client_error(
829 data
, id
, EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
831 eap_sim_learn_ids(sm
, data
, &eattr
);
835 if (data
->result_ind
&& attr
->result_ind
)
836 data
->use_result_ind
= 1;
838 if (data
->state
!= FAILURE
) {
839 eap_sim_state(data
, data
->use_result_ind
?
840 RESULT_SUCCESS
: SUCCESS
);
843 data
->num_id_req
= 0;
844 data
->num_notification
= 0;
845 /* RFC 4186 specifies that counter is initialized to one after
846 * fullauth, but initializing it to zero makes it easier to implement
847 * reauth verification. */
849 return eap_sim_response_challenge(data
, id
);
853 static int eap_sim_process_notification_reauth(struct eap_sim_data
*data
,
854 struct eap_sim_attrs
*attr
)
856 struct eap_sim_attrs eattr
;
859 if (attr
->encr_data
== NULL
|| attr
->iv
== NULL
) {
860 wpa_printf(MSG_WARNING
, "EAP-SIM: Notification message after "
861 "reauth did not include encrypted data");
865 decrypted
= eap_sim_parse_encr(data
->k_encr
, attr
->encr_data
,
866 attr
->encr_data_len
, attr
->iv
, &eattr
,
868 if (decrypted
== NULL
) {
869 wpa_printf(MSG_WARNING
, "EAP-SIM: Failed to parse encrypted "
870 "data from notification message");
874 if (eattr
.counter
< 0 || (size_t) eattr
.counter
!= data
->counter
) {
875 wpa_printf(MSG_WARNING
, "EAP-SIM: Counter in notification "
876 "message does not match with counter in reauth "
887 static int eap_sim_process_notification_auth(struct eap_sim_data
*data
,
888 const struct wpabuf
*reqData
,
889 struct eap_sim_attrs
*attr
)
891 if (attr
->mac
== NULL
) {
892 wpa_printf(MSG_INFO
, "EAP-SIM: no AT_MAC in after_auth "
893 "Notification message");
897 if (eap_sim_verify_mac(data
->k_aut
, reqData
, attr
->mac
, (u8
*) "", 0))
899 wpa_printf(MSG_WARNING
, "EAP-SIM: Notification message "
900 "used invalid AT_MAC");
905 eap_sim_process_notification_reauth(data
, attr
)) {
906 wpa_printf(MSG_WARNING
, "EAP-SIM: Invalid notification "
907 "message after reauth");
915 static struct wpabuf
* eap_sim_process_notification(
916 struct eap_sm
*sm
, struct eap_sim_data
*data
, u8 id
,
917 const struct wpabuf
*reqData
, struct eap_sim_attrs
*attr
)
919 wpa_printf(MSG_DEBUG
, "EAP-SIM: subtype Notification");
920 if (data
->num_notification
> 0) {
921 wpa_printf(MSG_INFO
, "EAP-SIM: too many notification "
922 "rounds (only one allowed)");
923 return eap_sim_client_error(data
, id
,
924 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
926 data
->num_notification
++;
927 if (attr
->notification
== -1) {
928 wpa_printf(MSG_INFO
, "EAP-SIM: no AT_NOTIFICATION in "
929 "Notification message");
930 return eap_sim_client_error(data
, id
,
931 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
934 if ((attr
->notification
& 0x4000) == 0 &&
935 eap_sim_process_notification_auth(data
, reqData
, attr
)) {
936 return eap_sim_client_error(data
, id
,
937 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
940 eap_sim_report_notification(sm
->msg_ctx
, attr
->notification
, 0);
941 if (attr
->notification
>= 0 && attr
->notification
< 32768) {
942 data
->error_code
= attr
->notification
;
943 eap_sim_state(data
, FAILURE
);
944 } else if (attr
->notification
== EAP_SIM_SUCCESS
&&
945 data
->state
== RESULT_SUCCESS
)
946 eap_sim_state(data
, SUCCESS
);
947 return eap_sim_response_notification(data
, id
, attr
->notification
);
951 static struct wpabuf
* eap_sim_process_reauthentication(
952 struct eap_sm
*sm
, struct eap_sim_data
*data
, u8 id
,
953 const struct wpabuf
*reqData
, struct eap_sim_attrs
*attr
)
955 struct eap_sim_attrs eattr
;
958 wpa_printf(MSG_DEBUG
, "EAP-SIM: subtype Reauthentication");
960 if (data
->reauth_id
== NULL
) {
961 wpa_printf(MSG_WARNING
, "EAP-SIM: Server is trying "
962 "reauthentication, but no reauth_id available");
963 return eap_sim_client_error(data
, id
,
964 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
968 if (eap_sim_verify_mac(data
->k_aut
, reqData
, attr
->mac
, (u8
*) "", 0))
970 wpa_printf(MSG_WARNING
, "EAP-SIM: Reauthentication "
971 "did not have valid AT_MAC");
974 "TEST: Ignore AT_MAC mismatch for fuzz testing");
975 #else /* TEST_FUZZ */
976 return eap_sim_client_error(data
, id
,
977 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
978 #endif /* TEST_FUZZ */
981 /* At this stage the received MAC has been verified. Use this MAC for
982 * reauth Session-Id calculation if all other checks pass.
983 * The peer does not use the local MAC but the received MAC in deriving
987 os_memcpy(data
->reauth_mac
, attr
->mac
, EAP_SIM_MAC_LEN
);
989 os_memset(data
->reauth_mac
, 0x12, EAP_SIM_MAC_LEN
);
990 #else /* TEST_FUZZ */
991 os_memcpy(data
->reauth_mac
, attr
->mac
, EAP_SIM_MAC_LEN
);
992 #endif /* TEST_FUZZ */
993 wpa_hexdump(MSG_DEBUG
, "EAP-SIM: Server MAC",
994 data
->reauth_mac
, EAP_SIM_MAC_LEN
);
996 if (attr
->encr_data
== NULL
|| attr
->iv
== NULL
) {
997 wpa_printf(MSG_WARNING
, "EAP-SIM: Reauthentication "
998 "message did not include encrypted data");
999 return eap_sim_client_error(data
, id
,
1000 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
1003 decrypted
= eap_sim_parse_encr(data
->k_encr
, attr
->encr_data
,
1004 attr
->encr_data_len
, attr
->iv
, &eattr
,
1006 if (decrypted
== NULL
) {
1007 wpa_printf(MSG_WARNING
, "EAP-SIM: Failed to parse encrypted "
1008 "data from reauthentication message");
1009 return eap_sim_client_error(data
, id
,
1010 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
1013 if (eattr
.nonce_s
== NULL
|| eattr
.counter
< 0) {
1014 wpa_printf(MSG_INFO
, "EAP-SIM: (encr) No%s%s in reauth packet",
1015 !eattr
.nonce_s
? " AT_NONCE_S" : "",
1016 eattr
.counter
< 0 ? " AT_COUNTER" : "");
1018 return eap_sim_client_error(data
, id
,
1019 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
1022 if (eattr
.counter
< 0 || (size_t) eattr
.counter
<= data
->counter
) {
1024 wpa_printf(MSG_INFO
, "EAP-SIM: (encr) Invalid counter "
1025 "(%d <= %d)", eattr
.counter
, data
->counter
);
1026 data
->counter_too_small
= eattr
.counter
;
1028 /* Reply using Re-auth w/ AT_COUNTER_TOO_SMALL. The current
1029 * reauth_id must not be used to start a new reauthentication.
1030 * However, since it was used in the last EAP-Response-Identity
1031 * packet, it has to saved for the following fullauth to be
1032 * used in MK derivation. */
1033 os_free(data
->last_eap_identity
);
1034 data
->last_eap_identity
= data
->reauth_id
;
1035 data
->last_eap_identity_len
= data
->reauth_id_len
;
1036 data
->reauth_id
= NULL
;
1037 data
->reauth_id_len
= 0;
1039 res
= eap_sim_response_reauth(data
, id
, 1, eattr
.nonce_s
);
1044 data
->counter
= eattr
.counter
;
1046 os_memcpy(data
->nonce_s
, eattr
.nonce_s
, EAP_SIM_NONCE_S_LEN
);
1047 wpa_hexdump(MSG_DEBUG
, "EAP-SIM: (encr) AT_NONCE_S",
1048 data
->nonce_s
, EAP_SIM_NONCE_S_LEN
);
1050 eap_sim_derive_keys_reauth(data
->counter
,
1051 data
->reauth_id
, data
->reauth_id_len
,
1052 data
->nonce_s
, data
->mk
, data
->msk
,
1054 eap_sim_clear_identities(sm
, data
, CLEAR_REAUTH_ID
| CLEAR_EAP_ID
);
1055 eap_sim_learn_ids(sm
, data
, &eattr
);
1057 if (data
->result_ind
&& attr
->result_ind
)
1058 data
->use_result_ind
= 1;
1060 if (data
->state
!= FAILURE
) {
1061 eap_sim_state(data
, data
->use_result_ind
?
1062 RESULT_SUCCESS
: SUCCESS
);
1065 data
->num_id_req
= 0;
1066 data
->num_notification
= 0;
1067 if (data
->counter
> EAP_SIM_MAX_FAST_REAUTHS
) {
1068 wpa_printf(MSG_DEBUG
, "EAP-SIM: Maximum number of "
1069 "fast reauths performed - force fullauth");
1070 eap_sim_clear_identities(sm
, data
,
1071 CLEAR_REAUTH_ID
| CLEAR_EAP_ID
);
1074 return eap_sim_response_reauth(data
, id
, 0, data
->nonce_s
);
1078 static struct wpabuf
* eap_sim_process(struct eap_sm
*sm
, void *priv
,
1079 struct eap_method_ret
*ret
,
1080 const struct wpabuf
*reqData
)
1082 struct eap_sim_data
*data
= priv
;
1083 const struct eap_hdr
*req
;
1087 struct eap_sim_attrs attr
;
1090 wpa_hexdump_buf(MSG_DEBUG
, "EAP-SIM: EAP data", reqData
);
1091 if (eap_get_config_identity(sm
, &len
) == NULL
) {
1092 wpa_printf(MSG_INFO
, "EAP-SIM: Identity not configured");
1093 eap_sm_request_identity(sm
);
1098 pos
= eap_hdr_validate(EAP_VENDOR_IETF
, EAP_TYPE_SIM
, reqData
, &len
);
1099 if (pos
== NULL
|| len
< 3) {
1103 req
= wpabuf_head(reqData
);
1104 id
= req
->identifier
;
1105 len
= be_to_host16(req
->length
);
1107 ret
->ignore
= FALSE
;
1108 ret
->methodState
= METHOD_MAY_CONT
;
1109 ret
->decision
= DECISION_FAIL
;
1110 ret
->allowNotifications
= TRUE
;
1113 wpa_printf(MSG_DEBUG
, "EAP-SIM: Subtype=%d", subtype
);
1114 pos
+= 2; /* Reserved */
1116 if (eap_sim_parse_attr(pos
, wpabuf_head_u8(reqData
) + len
, &attr
, 0,
1118 res
= eap_sim_client_error(data
, id
,
1119 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
1124 case EAP_SIM_SUBTYPE_START
:
1125 res
= eap_sim_process_start(sm
, data
, id
, &attr
);
1127 case EAP_SIM_SUBTYPE_CHALLENGE
:
1128 res
= eap_sim_process_challenge(sm
, data
, id
, reqData
, &attr
);
1130 case EAP_SIM_SUBTYPE_NOTIFICATION
:
1131 res
= eap_sim_process_notification(sm
, data
, id
, reqData
,
1134 case EAP_SIM_SUBTYPE_REAUTHENTICATION
:
1135 res
= eap_sim_process_reauthentication(sm
, data
, id
, reqData
,
1138 case EAP_SIM_SUBTYPE_CLIENT_ERROR
:
1139 wpa_printf(MSG_DEBUG
, "EAP-SIM: subtype Client-Error");
1140 res
= eap_sim_client_error(data
, id
,
1141 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
1144 wpa_printf(MSG_DEBUG
, "EAP-SIM: Unknown subtype=%d", subtype
);
1145 res
= eap_sim_client_error(data
, id
,
1146 EAP_SIM_UNABLE_TO_PROCESS_PACKET
);
1151 if (data
->state
== FAILURE
) {
1152 ret
->decision
= DECISION_FAIL
;
1153 ret
->methodState
= METHOD_DONE
;
1154 } else if (data
->state
== SUCCESS
) {
1155 ret
->decision
= data
->use_result_ind
?
1156 DECISION_UNCOND_SUCC
: DECISION_COND_SUCC
;
1157 ret
->methodState
= data
->use_result_ind
?
1158 METHOD_DONE
: METHOD_MAY_CONT
;
1159 } else if (data
->state
== RESULT_SUCCESS
)
1160 ret
->methodState
= METHOD_CONT
;
1162 if (ret
->methodState
== METHOD_DONE
) {
1163 ret
->allowNotifications
= FALSE
;
1170 static Boolean
eap_sim_has_reauth_data(struct eap_sm
*sm
, void *priv
)
1172 struct eap_sim_data
*data
= priv
;
1173 return data
->pseudonym
|| data
->reauth_id
;
1177 static void eap_sim_deinit_for_reauth(struct eap_sm
*sm
, void *priv
)
1179 struct eap_sim_data
*data
= priv
;
1180 eap_sim_clear_identities(sm
, data
, CLEAR_EAP_ID
);
1181 data
->use_result_ind
= 0;
1182 eap_sim_clear_keys(data
, 1);
1186 static void * eap_sim_init_for_reauth(struct eap_sm
*sm
, void *priv
)
1188 struct eap_sim_data
*data
= priv
;
1189 if (random_get_bytes(data
->nonce_mt
, EAP_SIM_NONCE_MT_LEN
)) {
1190 wpa_printf(MSG_WARNING
, "EAP-SIM: Failed to get random data "
1192 eap_sim_deinit(sm
, data
);
1195 data
->num_id_req
= 0;
1196 data
->num_notification
= 0;
1197 eap_sim_state(data
, CONTINUE
);
1202 static const u8
* eap_sim_get_identity(struct eap_sm
*sm
, void *priv
,
1205 struct eap_sim_data
*data
= priv
;
1207 if (data
->reauth_id
) {
1208 *len
= data
->reauth_id_len
;
1209 return data
->reauth_id
;
1212 if (data
->pseudonym
) {
1213 *len
= data
->pseudonym_len
;
1214 return data
->pseudonym
;
1221 static Boolean
eap_sim_isKeyAvailable(struct eap_sm
*sm
, void *priv
)
1223 struct eap_sim_data
*data
= priv
;
1224 return data
->state
== SUCCESS
;
1228 static u8
* eap_sim_getKey(struct eap_sm
*sm
, void *priv
, size_t *len
)
1230 struct eap_sim_data
*data
= priv
;
1233 if (data
->state
!= SUCCESS
)
1236 key
= os_memdup(data
->msk
, EAP_SIM_KEYING_DATA_LEN
);
1240 *len
= EAP_SIM_KEYING_DATA_LEN
;
1246 static u8
* eap_sim_get_session_id(struct eap_sm
*sm
, void *priv
, size_t *len
)
1248 struct eap_sim_data
*data
= priv
;
1251 if (data
->state
!= SUCCESS
)
1255 *len
= 1 + data
->num_chal
* GSM_RAND_LEN
+ EAP_SIM_NONCE_MT_LEN
;
1257 *len
= 1 + EAP_SIM_NONCE_S_LEN
+ EAP_SIM_MAC_LEN
;
1258 id
= os_malloc(*len
);
1262 id
[0] = EAP_TYPE_SIM
;
1263 if (!data
->reauth
) {
1264 os_memcpy(id
+ 1, data
->rand
, data
->num_chal
* GSM_RAND_LEN
);
1265 os_memcpy(id
+ 1 + data
->num_chal
* GSM_RAND_LEN
,
1266 data
->nonce_mt
, EAP_SIM_NONCE_MT_LEN
);
1268 os_memcpy(id
+ 1, data
->nonce_s
, EAP_SIM_NONCE_S_LEN
);
1269 os_memcpy(id
+ 1 + EAP_SIM_NONCE_S_LEN
, data
->reauth_mac
,
1272 wpa_hexdump(MSG_DEBUG
, "EAP-SIM: Derived Session-Id", id
, *len
);
1278 static u8
* eap_sim_get_emsk(struct eap_sm
*sm
, void *priv
, size_t *len
)
1280 struct eap_sim_data
*data
= priv
;
1283 if (data
->state
!= SUCCESS
)
1286 key
= os_memdup(data
->emsk
, EAP_EMSK_LEN
);
1290 *len
= EAP_EMSK_LEN
;
1296 static int eap_sim_get_error_code(void *priv
)
1298 struct eap_sim_data
*data
= priv
;
1299 int current_data_error
;
1302 return NO_EAP_METHOD_ERROR
;
1304 current_data_error
= data
->error_code
;
1306 /* Now reset for next transaction */
1307 data
->error_code
= NO_EAP_METHOD_ERROR
;
1309 return current_data_error
;
1313 int eap_peer_sim_register(void)
1315 struct eap_method
*eap
;
1317 eap
= eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION
,
1318 EAP_VENDOR_IETF
, EAP_TYPE_SIM
, "SIM");
1322 eap
->init
= eap_sim_init
;
1323 eap
->deinit
= eap_sim_deinit
;
1324 eap
->process
= eap_sim_process
;
1325 eap
->isKeyAvailable
= eap_sim_isKeyAvailable
;
1326 eap
->getKey
= eap_sim_getKey
;
1327 eap
->getSessionId
= eap_sim_get_session_id
;
1328 eap
->has_reauth_data
= eap_sim_has_reauth_data
;
1329 eap
->deinit_for_reauth
= eap_sim_deinit_for_reauth
;
1330 eap
->init_for_reauth
= eap_sim_init_for_reauth
;
1331 eap
->get_identity
= eap_sim_get_identity
;
1332 eap
->get_emsk
= eap_sim_get_emsk
;
1333 eap
->get_error_code
= eap_sim_get_error_code
;
1335 return eap_peer_method_register(eap
);