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  • Committer: Bazaar Package Importer
  • Author(s): Reinhard Tartler
  • Date: 2008-12-02 20:52:16 UTC
  • mfrom: (2.1.30 intrepid)
  • Revision ID: james.westby@ubuntu.com-20081202205216-72fqozu84sdt89a8
Tags: 0.6.4-3
http://bugs.debian.org/506328
Bugfix: "Missing -d in testing for a directory in init script". 
Thanks to Braun Gábor <braung@renyi.hu> for reporting and the patch.
(Closes: #506328)

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eap_sake.c
1
 
/*
2
 
 * EAP peer method: EAP-SAKE (draft-vanderveen-eap-sake-01.txt)
3
 
 * Copyright (c) 2006, Jouni Malinen <jkmaline@cc.hut.fi>
4
 
 *
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.
8
 
 *
9
 
 * Alternatively, this software may be distributed under the terms of BSD
10
 
 * license.
11
 
 *
12
 
 * See README and COPYING for more details.
13
 
 */
14
 
 
15
 
#include "includes.h"
16
 
 
17
 
#include "common.h"
18
 
#include "eap_i.h"
19
 
#include "wpa_supplicant.h"
20
 
#include "config_ssid.h"
21
 
#include "eap_sake_common.h"
22
 
 
23
 
struct eap_sake_data {
24
 
        enum { IDENTITY, CHALLENGE, CONFIRM, SUCCESS, FAILURE } state;
25
 
        u8 root_secret_a[EAP_SAKE_ROOT_SECRET_LEN];
26
 
        u8 root_secret_b[EAP_SAKE_ROOT_SECRET_LEN];
27
 
        u8 rand_s[EAP_SAKE_RAND_LEN];
28
 
        u8 rand_p[EAP_SAKE_RAND_LEN];
29
 
        struct {
30
 
                u8 auth[EAP_SAKE_TEK_AUTH_LEN];
31
 
                u8 cipher[EAP_SAKE_TEK_CIPHER_LEN];
32
 
        } tek;
33
 
        u8 msk[EAP_MSK_LEN];
34
 
        u8 session_id;
35
 
        int session_id_set;
36
 
        int expanded_eap;
37
 
        u8 *peerid;
38
 
        size_t peerid_len;
39
 
        u8 *serverid;
40
 
        size_t serverid_len;
41
 
};
42
 
 
43
 
 
44
 
static const char * eap_sake_state_txt(int state)
45
 
{
46
 
        switch (state) {
47
 
        case IDENTITY:
48
 
                return "IDENTITY";
49
 
        case CHALLENGE:
50
 
                return "CHALLENGE";
51
 
        case CONFIRM:
52
 
                return "CONFIRM";
53
 
        case SUCCESS:
54
 
                return "SUCCESS";
55
 
        case FAILURE:
56
 
                return "FAILURE";
57
 
        default:
58
 
                return "?";
59
 
        }
60
 
}
61
 
 
62
 
 
63
 
static void eap_sake_state(struct eap_sake_data *data, int state)
64
 
{
65
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: %s -> %s",
66
 
                   eap_sake_state_txt(data->state),
67
 
                   eap_sake_state_txt(state));
68
 
        data->state = state;
69
 
}
70
 
 
71
 
 
72
 
static void eap_sake_deinit(struct eap_sm *sm, void *priv);
73
 
 
74
 
 
75
 
static void * eap_sake_init(struct eap_sm *sm)
76
 
{
77
 
        struct wpa_ssid *config = eap_get_config(sm);
78
 
        struct eap_sake_data *data;
79
 
 
80
 
        if (config == NULL) {
81
 
                wpa_printf(MSG_INFO, "EAP-SAKE: No configuration found");
82
 
                return NULL;
83
 
        }
84
 
 
85
 
        if (!config->eappsk ||
86
 
            config->eappsk_len != 2 * EAP_SAKE_ROOT_SECRET_LEN) {
87
 
                wpa_printf(MSG_INFO, "EAP-SAKE: No key (eappsk) of correct "
88
 
                           "length configured");
89
 
                return NULL;
90
 
        }
91
 
 
92
 
        data = wpa_zalloc(sizeof(*data));
93
 
        if (data == NULL)
94
 
                return NULL;
95
 
        data->state = IDENTITY;
96
 
 
97
 
        if (config->nai) {
98
 
                data->peerid = malloc(config->nai_len);
99
 
                if (data->peerid == NULL) {
100
 
                        eap_sake_deinit(sm, data);
101
 
                        return NULL;
102
 
                }
103
 
                memcpy(data->peerid, config->nai, config->nai_len);
104
 
                data->peerid_len = config->nai_len;
105
 
        }
106
 
 
107
 
        memcpy(data->root_secret_a, config->eappsk, EAP_SAKE_ROOT_SECRET_LEN);
108
 
        memcpy(data->root_secret_b, config->eappsk + EAP_SAKE_ROOT_SECRET_LEN,
109
 
               EAP_SAKE_ROOT_SECRET_LEN);
110
 
 
111
 
        return data;
112
 
}
113
 
 
114
 
 
115
 
static void eap_sake_deinit(struct eap_sm *sm, void *priv)
116
 
{
117
 
        struct eap_sake_data *data = priv;
118
 
        free(data->serverid);
119
 
        free(data->peerid);
120
 
        free(data);
121
 
}
122
 
 
123
 
 
124
 
static u8 * eap_sake_build_msg(struct eap_sake_data *data, u8 **payload,
125
 
                               int id, size_t *length, u8 subtype)
126
 
{
127
 
        struct eap_sake_hdr *req;
128
 
        struct eap_sake_exp_hdr *ereq;
129
 
        size_t pad;
130
 
        u8 *msg;
131
 
 
132
 
        *length += data->expanded_eap ? sizeof(struct eap_sake_exp_hdr) :
133
 
                sizeof(struct eap_sake_hdr);
134
 
 
135
 
        /* Pad to 32-bit boundary; minimum pad length is 2. */
136
 
        pad = *length % 4;
137
 
        switch (pad) {
138
 
        case 1:
139
 
                pad = 3;
140
 
                break;
141
 
        case 2:
142
 
                pad = 2;
143
 
                break;
144
 
        case 3:
145
 
                pad = 5;
146
 
                break;
147
 
        default:
148
 
                pad = 0;
149
 
                break;
150
 
        }
151
 
        *length += pad;
152
 
 
153
 
        msg = wpa_zalloc(*length);
154
 
        if (msg == NULL) {
155
 
                wpa_printf(MSG_ERROR, "EAP-SAKE: Failed to allocate memory "
156
 
                           "request");
157
 
                return NULL;
158
 
        }
159
 
 
160
 
        if (data->expanded_eap) {
161
 
                ereq = (struct eap_sake_exp_hdr *) msg;
162
 
                ereq->code = EAP_CODE_RESPONSE;
163
 
                ereq->identifier = id;
164
 
                ereq->length = htons((u16) *length);
165
 
                ereq->type = EAP_TYPE_EXPANDED;
166
 
                WPA_PUT_BE24(ereq->vendor_id, EAP_VENDOR_IETF);
167
 
                WPA_PUT_BE32(ereq->vendor_type, EAP_TYPE_SAKE);
168
 
                ereq->pad = 0;
169
 
                ereq->version = EAP_SAKE_VERSION;
170
 
                ereq->session_id = data->session_id;
171
 
                ereq->subtype = subtype;
172
 
                *payload = (u8 *) (ereq + 1);
173
 
        } else {
174
 
                req = (struct eap_sake_hdr *) msg;
175
 
                req->code = EAP_CODE_RESPONSE;
176
 
                req->identifier = id;
177
 
                req->length = htons((u16) *length);
178
 
                req->type = EAP_TYPE_SAKE;
179
 
                req->version = EAP_SAKE_VERSION;
180
 
                req->session_id = data->session_id;
181
 
                req->subtype = subtype;
182
 
                *payload = (u8 *) (req + 1);
183
 
        }
184
 
 
185
 
        if (pad) {
186
 
                u8 *pos = &msg[*length - pad];
187
 
                *pos++ = EAP_SAKE_AT_PADDING;
188
 
                *pos++ = pad;
189
 
        }
190
 
 
191
 
        return msg;
192
 
}
193
 
 
194
 
 
195
 
static u8 * eap_sake_process_identity(struct eap_sm *sm,
196
 
                                      struct eap_sake_data *data,
197
 
                                      struct eap_method_ret *ret,
198
 
                                      const u8 *reqData, size_t reqDataLen,
199
 
                                      const u8 *payload, size_t payload_len,
200
 
                                      size_t *respDataLen)
201
 
{
202
 
        struct eap_sake_parse_attr attr;
203
 
        u8 *resp, *rpos;
204
 
        const struct eap_hdr *hdr = (const struct eap_hdr *) reqData;
205
 
 
206
 
        if (data->state != IDENTITY) {
207
 
                ret->ignore = TRUE;
208
 
                return NULL;
209
 
        }
210
 
 
211
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: Received Request/Identity");
212
 
 
213
 
        if (eap_sake_parse_attributes(payload, payload_len, &attr))
214
 
                return NULL;
215
 
 
216
 
        if (!attr.perm_id_req && !attr.any_id_req) {
217
 
                wpa_printf(MSG_INFO, "EAP-SAKE: No AT_PERM_ID_REQ or "
218
 
                           "AT_ANY_ID_REQ in Request/Identity");
219
 
                return NULL;
220
 
        }
221
 
 
222
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: Sending Response/Identity");
223
 
 
224
 
        *respDataLen = 2 + data->peerid_len;
225
 
        resp = eap_sake_build_msg(data, &rpos, hdr->identifier, respDataLen,
226
 
                                  EAP_SAKE_SUBTYPE_IDENTITY);
227
 
        if (resp == NULL)
228
 
                return NULL;
229
 
 
230
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: * AT_PEERID");
231
 
        *rpos++ = EAP_SAKE_AT_PEERID;
232
 
        *rpos++ = 2 + data->peerid_len;
233
 
        if (data->peerid)
234
 
                memcpy(rpos, data->peerid, data->peerid_len);
235
 
 
236
 
        eap_sake_state(data, CHALLENGE);
237
 
 
238
 
        return resp;
239
 
}
240
 
 
241
 
 
242
 
static u8 * eap_sake_process_challenge(struct eap_sm *sm,
243
 
                                       struct eap_sake_data *data,
244
 
                                       struct eap_method_ret *ret,
245
 
                                       const u8 *reqData, size_t reqDataLen,
246
 
                                       const u8 *payload, size_t payload_len,
247
 
                                       size_t *respDataLen)
248
 
{
249
 
        struct eap_sake_parse_attr attr;
250
 
        u8 *resp, *rpos;
251
 
        const struct eap_hdr *hdr = (const struct eap_hdr *) reqData;
252
 
 
253
 
        if (data->state != IDENTITY && data->state != CHALLENGE) {
254
 
                wpa_printf(MSG_DEBUG, "EAP-SAKE: Request/Challenge received "
255
 
                           "in unexpected state (%d)", data->state);
256
 
                ret->ignore = TRUE;
257
 
                return NULL;
258
 
        }
259
 
        if (data->state == IDENTITY)
260
 
                eap_sake_state(data, CHALLENGE);
261
 
 
262
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: Received Request/Challenge");
263
 
 
264
 
        if (eap_sake_parse_attributes(payload, payload_len, &attr))
265
 
                return NULL;
266
 
 
267
 
        if (!attr.rand_s) {
268
 
                wpa_printf(MSG_INFO, "EAP-SAKE: Request/Challenge did not "
269
 
                           "include AT_RAND_S");
270
 
                return NULL;
271
 
        }
272
 
 
273
 
        memcpy(data->rand_s, attr.rand_s, EAP_SAKE_RAND_LEN);
274
 
        wpa_hexdump(MSG_MSGDUMP, "EAP-SAKE: RAND_S (server rand)",
275
 
                    data->rand_s, EAP_SAKE_RAND_LEN);
276
 
 
277
 
        if (hostapd_get_rand(data->rand_p, EAP_SAKE_RAND_LEN)) {
278
 
                wpa_printf(MSG_ERROR, "EAP-SAKE: Failed to get random data");
279
 
                return NULL;
280
 
        }
281
 
        wpa_hexdump(MSG_MSGDUMP, "EAP-SAKE: RAND_P (peer rand)",
282
 
                    data->rand_p, EAP_SAKE_RAND_LEN);
283
 
 
284
 
        free(data->serverid);
285
 
        data->serverid = NULL;
286
 
        data->serverid_len = 0;
287
 
        if (attr.serverid) {
288
 
                wpa_hexdump_ascii(MSG_MSGDUMP, "EAP-SAKE: SERVERID",
289
 
                                  attr.serverid, attr.serverid_len);
290
 
                data->serverid = malloc(attr.serverid_len);
291
 
                if (data->serverid == NULL)
292
 
                        return NULL;
293
 
                memcpy(data->serverid, attr.serverid, attr.serverid_len);
294
 
                data->serverid_len = attr.serverid_len;
295
 
        }
296
 
 
297
 
        eap_sake_derive_keys(data->root_secret_a, data->root_secret_b,
298
 
                             data->rand_s, data->rand_p,
299
 
                             (u8 *) &data->tek, data->msk);
300
 
 
301
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: Sending Response/Challenge");
302
 
 
303
 
        *respDataLen = 2 + EAP_SAKE_RAND_LEN + 2 + EAP_SAKE_MIC_LEN;
304
 
        if (data->peerid)
305
 
                *respDataLen += 2 + data->peerid_len;
306
 
        resp = eap_sake_build_msg(data, &rpos, hdr->identifier, respDataLen,
307
 
                                  EAP_SAKE_SUBTYPE_CHALLENGE);
308
 
        if (resp == NULL)
309
 
                return NULL;
310
 
 
311
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: * AT_RAND_P");
312
 
        *rpos++ = EAP_SAKE_AT_RAND_P;
313
 
        *rpos++ = 2 + EAP_SAKE_RAND_LEN;
314
 
        memcpy(rpos, data->rand_p, EAP_SAKE_RAND_LEN);
315
 
        rpos += EAP_SAKE_RAND_LEN;
316
 
 
317
 
        if (data->peerid) {
318
 
                wpa_printf(MSG_DEBUG, "EAP-SAKE: * AT_PEERID");
319
 
                *rpos++ = EAP_SAKE_AT_PEERID;
320
 
                *rpos++ = 2 + data->peerid_len;
321
 
                memcpy(rpos, data->peerid, data->peerid_len);
322
 
                rpos += data->peerid_len;
323
 
        }
324
 
 
325
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: * AT_MIC_P");
326
 
        *rpos++ = EAP_SAKE_AT_MIC_P;
327
 
        *rpos++ = 2 + EAP_SAKE_MIC_LEN;
328
 
        if (eap_sake_compute_mic(data->tek.auth, data->rand_s, data->rand_p,
329
 
                                 data->serverid, data->serverid_len,
330
 
                                 data->peerid, data->peerid_len, 1,
331
 
                                 resp, *respDataLen, rpos, rpos)) {
332
 
                wpa_printf(MSG_INFO, "EAP-SAKE: Failed to compute MIC");
333
 
                free(resp);
334
 
                return NULL;
335
 
        }
336
 
 
337
 
        eap_sake_state(data, CONFIRM);
338
 
 
339
 
        return resp;
340
 
}
341
 
 
342
 
 
343
 
static u8 * eap_sake_process_confirm(struct eap_sm *sm,
344
 
                                     struct eap_sake_data *data,
345
 
                                     struct eap_method_ret *ret,
346
 
                                     const u8 *reqData, size_t reqDataLen,
347
 
                                     const u8 *payload, size_t payload_len,
348
 
                                     size_t *respDataLen)
349
 
{
350
 
        struct eap_sake_parse_attr attr;
351
 
        u8 mic_s[EAP_SAKE_MIC_LEN];
352
 
        u8 *resp, *rpos;
353
 
        const struct eap_hdr *hdr = (const struct eap_hdr *) reqData;
354
 
 
355
 
        if (data->state != CONFIRM) {
356
 
                ret->ignore = TRUE;
357
 
                return NULL;
358
 
        }
359
 
 
360
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: Received Request/Confirm");
361
 
 
362
 
        if (eap_sake_parse_attributes(payload, payload_len, &attr))
363
 
                return NULL;
364
 
 
365
 
        if (!attr.mic_s) {
366
 
                wpa_printf(MSG_INFO, "EAP-SAKE: Request/Confirm did not "
367
 
                           "include AT_MIC_S");
368
 
                return NULL;
369
 
        }
370
 
 
371
 
        eap_sake_compute_mic(data->tek.auth, data->rand_s, data->rand_p,
372
 
                             data->serverid, data->serverid_len,
373
 
                             data->peerid, data->peerid_len, 0,
374
 
                             reqData, reqDataLen, attr.mic_s, mic_s);
375
 
        if (memcmp(attr.mic_s, mic_s, EAP_SAKE_MIC_LEN) != 0) {
376
 
                wpa_printf(MSG_INFO, "EAP-SAKE: Incorrect AT_MIC_S");
377
 
                eap_sake_state(data, FAILURE);
378
 
                ret->methodState = METHOD_DONE;
379
 
                ret->decision = DECISION_FAIL;
380
 
                ret->allowNotifications = FALSE;
381
 
                *respDataLen = 0;
382
 
                wpa_printf(MSG_DEBUG, "EAP-SAKE: Sending "
383
 
                           "Response/Auth-Reject");
384
 
                return eap_sake_build_msg(data, &rpos, hdr->identifier,
385
 
                                          respDataLen,
386
 
                                          EAP_SAKE_SUBTYPE_AUTH_REJECT);
387
 
        }
388
 
 
389
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: Sending Response/Confirm");
390
 
 
391
 
        *respDataLen = 2 + EAP_SAKE_MIC_LEN;
392
 
        resp = eap_sake_build_msg(data, &rpos, hdr->identifier, respDataLen,
393
 
                                  EAP_SAKE_SUBTYPE_CONFIRM);
394
 
        if (resp == NULL)
395
 
                return NULL;
396
 
 
397
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: * AT_MIC_P");
398
 
        *rpos++ = EAP_SAKE_AT_MIC_P;
399
 
        *rpos++ = 2 + EAP_SAKE_MIC_LEN;
400
 
        if (eap_sake_compute_mic(data->tek.auth, data->rand_s, data->rand_p,
401
 
                                 data->serverid, data->serverid_len,
402
 
                                 data->peerid, data->peerid_len, 1,
403
 
                                 resp, *respDataLen, rpos, rpos)) {
404
 
                wpa_printf(MSG_INFO, "EAP-SAKE: Failed to compute MIC");
405
 
                free(resp);
406
 
                return NULL;
407
 
        }
408
 
 
409
 
        eap_sake_state(data, SUCCESS);
410
 
        ret->methodState = METHOD_DONE;
411
 
        ret->decision = DECISION_UNCOND_SUCC;
412
 
        ret->allowNotifications = FALSE;
413
 
 
414
 
        return resp;
415
 
}
416
 
 
417
 
 
418
 
static u8 * eap_sake_process(struct eap_sm *sm, void *priv,
419
 
                            struct eap_method_ret *ret,
420
 
                            const u8 *reqData, size_t reqDataLen,
421
 
                            size_t *respDataLen)
422
 
{
423
 
        struct eap_sake_data *data = priv;
424
 
        const struct eap_sake_hdr *req;
425
 
        const struct eap_sake_exp_hdr *ereq;
426
 
        u8 *resp;
427
 
        const u8 *pos, *end;
428
 
        size_t len;
429
 
        u8 subtype, session_id;
430
 
 
431
 
        pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_SAKE,
432
 
                               reqData, reqDataLen, &len);
433
 
        if (pos == NULL || len < (data->expanded_eap ? 4 : 3)) {
434
 
                ret->ignore = TRUE;
435
 
                return NULL;
436
 
        }
437
 
 
438
 
        if (data->expanded_eap) {
439
 
                ereq = (const struct eap_sake_exp_hdr *) reqData;
440
 
                subtype = ereq->subtype;
441
 
                session_id = ereq->session_id;
442
 
                pos = (const u8 *) (ereq + 1);
443
 
                end = reqData + be_to_host16(ereq->length);
444
 
        } else {
445
 
                req = (const struct eap_sake_hdr *) reqData;
446
 
                subtype = req->subtype;
447
 
                session_id = req->session_id;
448
 
                pos = (const u8 *) (req + 1);
449
 
                end = reqData + be_to_host16(req->length);
450
 
        }
451
 
 
452
 
        wpa_printf(MSG_DEBUG, "EAP-SAKE: Received frame: subtype %d "
453
 
                   "session_id %d", subtype, session_id);
454
 
        wpa_hexdump(MSG_DEBUG, "EAP-SAKE: Received attributes",
455
 
                    pos, end - pos);
456
 
 
457
 
        if (data->session_id_set && data->session_id != session_id) {
458
 
                wpa_printf(MSG_INFO, "EAP-SAKE: Session ID mismatch (%d,%d)",
459
 
                           session_id, data->session_id);
460
 
                ret->ignore = TRUE;
461
 
                return NULL;
462
 
        }
463
 
        data->session_id = session_id;
464
 
        data->session_id_set = 1;
465
 
 
466
 
        ret->ignore = FALSE;
467
 
        ret->methodState = METHOD_MAY_CONT;
468
 
        ret->decision = DECISION_FAIL;
469
 
        ret->allowNotifications = TRUE;
470
 
 
471
 
        switch (subtype) {
472
 
        case EAP_SAKE_SUBTYPE_IDENTITY:
473
 
                resp = eap_sake_process_identity(sm, data, ret, reqData,
474
 
                                                 reqDataLen, pos, end - pos,
475
 
                                                 respDataLen);
476
 
                break;
477
 
        case EAP_SAKE_SUBTYPE_CHALLENGE:
478
 
                resp = eap_sake_process_challenge(sm, data, ret, reqData,
479
 
                                                  reqDataLen, pos, end - pos,
480
 
                                                  respDataLen);
481
 
                break;
482
 
        case EAP_SAKE_SUBTYPE_CONFIRM:
483
 
                resp = eap_sake_process_confirm(sm, data, ret, reqData,
484
 
                                                reqDataLen, pos, end - pos,
485
 
                                                respDataLen);
486
 
                break;
487
 
        default:
488
 
                wpa_printf(MSG_DEBUG, "EAP-SAKE: Ignoring message with "
489
 
                           "unknown subtype %d", subtype);
490
 
                ret->ignore = TRUE;
491
 
                return NULL;
492
 
        }
493
 
 
494
 
        if (ret->methodState == METHOD_DONE)
495
 
                ret->allowNotifications = FALSE;
496
 
 
497
 
        return resp;
498
 
}
499
 
 
500
 
 
501
 
static Boolean eap_sake_isKeyAvailable(struct eap_sm *sm, void *priv)
502
 
{
503
 
        struct eap_sake_data *data = priv;
504
 
        return data->state == SUCCESS;
505
 
}
506
 
 
507
 
 
508
 
static u8 * eap_sake_getKey(struct eap_sm *sm, void *priv, size_t *len)
509
 
{
510
 
        struct eap_sake_data *data = priv;
511
 
        u8 *key;
512
 
 
513
 
        if (data->state != SUCCESS)
514
 
                return NULL;
515
 
 
516
 
        key = malloc(EAP_MSK_LEN);
517
 
        if (key == NULL)
518
 
                return NULL;
519
 
        memcpy(key, data->msk, EAP_MSK_LEN);
520
 
        *len = EAP_MSK_LEN;
521
 
 
522
 
        return key;
523
 
}
524
 
 
525
 
 
526
 
int eap_peer_sake_register(void)
527
 
{
528
 
        struct eap_method *eap;
529
 
        int ret;
530
 
 
531
 
        eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION,
532
 
                                    EAP_VENDOR_IETF, EAP_TYPE_SAKE, "SAKE");
533
 
        if (eap == NULL)
534
 
                return -1;
535
 
 
536
 
        eap->init = eap_sake_init;
537
 
        eap->deinit = eap_sake_deinit;
538
 
        eap->process = eap_sake_process;
539
 
        eap->isKeyAvailable = eap_sake_isKeyAvailable;
540
 
        eap->getKey = eap_sake_getKey;
541
 
 
542
 
        ret = eap_peer_method_register(eap);
543
 
        if (ret)
544
 
                eap_peer_method_free(eap);
545
 
        return ret;
546
 
}