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-rw-r--r--src/eap_server/eap_server_gpsk.c633
1 files changed, 633 insertions, 0 deletions
diff --git a/src/eap_server/eap_server_gpsk.c b/src/eap_server/eap_server_gpsk.c
new file mode 100644
index 0000000..d0c7559
--- /dev/null
+++ b/src/eap_server/eap_server_gpsk.c
@@ -0,0 +1,633 @@
+/*
+ * hostapd / EAP-GPSK (RFC 5433) server
+ * Copyright (c) 2006-2007, Jouni Malinen <j@w1.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "eap_server/eap_i.h"
+#include "eap_common/eap_gpsk_common.h"
+
+
+struct eap_gpsk_data {
+ enum { GPSK_1, GPSK_3, SUCCESS, FAILURE } state;
+ u8 rand_server[EAP_GPSK_RAND_LEN];
+ u8 rand_peer[EAP_GPSK_RAND_LEN];
+ u8 msk[EAP_MSK_LEN];
+ u8 emsk[EAP_EMSK_LEN];
+ u8 sk[EAP_GPSK_MAX_SK_LEN];
+ size_t sk_len;
+ u8 pk[EAP_GPSK_MAX_PK_LEN];
+ size_t pk_len;
+ u8 *id_peer;
+ size_t id_peer_len;
+ u8 *id_server;
+ size_t id_server_len;
+#define MAX_NUM_CSUITES 2
+ struct eap_gpsk_csuite csuite_list[MAX_NUM_CSUITES];
+ size_t csuite_count;
+ int vendor; /* CSuite/Vendor */
+ int specifier; /* CSuite/Specifier */
+};
+
+
+static const char * eap_gpsk_state_txt(int state)
+{
+ switch (state) {
+ case GPSK_1:
+ return "GPSK-1";
+ case GPSK_3:
+ return "GPSK-3";
+ case SUCCESS:
+ return "SUCCESS";
+ case FAILURE:
+ return "FAILURE";
+ default:
+ return "?";
+ }
+}
+
+
+static void eap_gpsk_state(struct eap_gpsk_data *data, int state)
+{
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: %s -> %s",
+ eap_gpsk_state_txt(data->state),
+ eap_gpsk_state_txt(state));
+ data->state = state;
+}
+
+
+static void * eap_gpsk_init(struct eap_sm *sm)
+{
+ struct eap_gpsk_data *data;
+
+ data = os_zalloc(sizeof(*data));
+ if (data == NULL)
+ return NULL;
+ data->state = GPSK_1;
+
+ /* TODO: add support for configuring ID_Server */
+ data->id_server = (u8 *) os_strdup("hostapd");
+ if (data->id_server)
+ data->id_server_len = os_strlen((char *) data->id_server);
+
+ data->csuite_count = 0;
+ if (eap_gpsk_supported_ciphersuite(EAP_GPSK_VENDOR_IETF,
+ EAP_GPSK_CIPHER_AES)) {
+ WPA_PUT_BE32(data->csuite_list[data->csuite_count].vendor,
+ EAP_GPSK_VENDOR_IETF);
+ WPA_PUT_BE16(data->csuite_list[data->csuite_count].specifier,
+ EAP_GPSK_CIPHER_AES);
+ data->csuite_count++;
+ }
+ if (eap_gpsk_supported_ciphersuite(EAP_GPSK_VENDOR_IETF,
+ EAP_GPSK_CIPHER_SHA256)) {
+ WPA_PUT_BE32(data->csuite_list[data->csuite_count].vendor,
+ EAP_GPSK_VENDOR_IETF);
+ WPA_PUT_BE16(data->csuite_list[data->csuite_count].specifier,
+ EAP_GPSK_CIPHER_SHA256);
+ data->csuite_count++;
+ }
+
+ return data;
+}
+
+
+static void eap_gpsk_reset(struct eap_sm *sm, void *priv)
+{
+ struct eap_gpsk_data *data = priv;
+ os_free(data->id_server);
+ os_free(data->id_peer);
+ os_free(data);
+}
+
+
+static struct wpabuf * eap_gpsk_build_gpsk_1(struct eap_sm *sm,
+ struct eap_gpsk_data *data, u8 id)
+{
+ size_t len;
+ struct wpabuf *req;
+
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Request/GPSK-1");
+
+ if (os_get_random(data->rand_server, EAP_GPSK_RAND_LEN)) {
+ wpa_printf(MSG_ERROR, "EAP-GPSK: Failed to get random data");
+ eap_gpsk_state(data, FAILURE);
+ return NULL;
+ }
+ wpa_hexdump(MSG_MSGDUMP, "EAP-GPSK: RAND_Server",
+ data->rand_server, EAP_GPSK_RAND_LEN);
+
+ len = 1 + 2 + data->id_server_len + EAP_GPSK_RAND_LEN + 2 +
+ data->csuite_count * sizeof(struct eap_gpsk_csuite);
+ req = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_GPSK, len,
+ EAP_CODE_REQUEST, id);
+ if (req == NULL) {
+ wpa_printf(MSG_ERROR, "EAP-GPSK: Failed to allocate memory "
+ "for request/GPSK-1");
+ eap_gpsk_state(data, FAILURE);
+ return NULL;
+ }
+
+ wpabuf_put_u8(req, EAP_GPSK_OPCODE_GPSK_1);
+ wpabuf_put_be16(req, data->id_server_len);
+ wpabuf_put_data(req, data->id_server, data->id_server_len);
+ wpabuf_put_data(req, data->rand_server, EAP_GPSK_RAND_LEN);
+ wpabuf_put_be16(req,
+ data->csuite_count * sizeof(struct eap_gpsk_csuite));
+ wpabuf_put_data(req, data->csuite_list,
+ data->csuite_count * sizeof(struct eap_gpsk_csuite));
+
+ return req;
+}
+
+
+static struct wpabuf * eap_gpsk_build_gpsk_3(struct eap_sm *sm,
+ struct eap_gpsk_data *data, u8 id)
+{
+ u8 *pos, *start;
+ size_t len, miclen;
+ struct eap_gpsk_csuite *csuite;
+ struct wpabuf *req;
+
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Request/GPSK-3");
+
+ miclen = eap_gpsk_mic_len(data->vendor, data->specifier);
+ len = 1 + 2 * EAP_GPSK_RAND_LEN + 2 + data->id_server_len +
+ sizeof(struct eap_gpsk_csuite) + 2 + miclen;
+ req = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_GPSK, len,
+ EAP_CODE_REQUEST, id);
+ if (req == NULL) {
+ wpa_printf(MSG_ERROR, "EAP-GPSK: Failed to allocate memory "
+ "for request/GPSK-3");
+ eap_gpsk_state(data, FAILURE);
+ return NULL;
+ }
+
+ wpabuf_put_u8(req, EAP_GPSK_OPCODE_GPSK_3);
+ start = wpabuf_put(req, 0);
+
+ wpabuf_put_data(req, data->rand_peer, EAP_GPSK_RAND_LEN);
+ wpabuf_put_data(req, data->rand_server, EAP_GPSK_RAND_LEN);
+ wpabuf_put_be16(req, data->id_server_len);
+ wpabuf_put_data(req, data->id_server, data->id_server_len);
+ csuite = wpabuf_put(req, sizeof(*csuite));
+ WPA_PUT_BE32(csuite->vendor, data->vendor);
+ WPA_PUT_BE16(csuite->specifier, data->specifier);
+
+ /* no PD_Payload_2 */
+ wpabuf_put_be16(req, 0);
+
+ pos = wpabuf_put(req, miclen);
+ if (eap_gpsk_compute_mic(data->sk, data->sk_len, data->vendor,
+ data->specifier, start, pos - start, pos) < 0)
+ {
+ os_free(req);
+ eap_gpsk_state(data, FAILURE);
+ return NULL;
+ }
+
+ return req;
+}
+
+
+static struct wpabuf * eap_gpsk_buildReq(struct eap_sm *sm, void *priv, u8 id)
+{
+ struct eap_gpsk_data *data = priv;
+
+ switch (data->state) {
+ case GPSK_1:
+ return eap_gpsk_build_gpsk_1(sm, data, id);
+ case GPSK_3:
+ return eap_gpsk_build_gpsk_3(sm, data, id);
+ default:
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Unknown state %d in buildReq",
+ data->state);
+ break;
+ }
+ return NULL;
+}
+
+
+static Boolean eap_gpsk_check(struct eap_sm *sm, void *priv,
+ struct wpabuf *respData)
+{
+ struct eap_gpsk_data *data = priv;
+ const u8 *pos;
+ size_t len;
+
+ pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_GPSK, respData, &len);
+ if (pos == NULL || len < 1) {
+ wpa_printf(MSG_INFO, "EAP-GPSK: Invalid frame");
+ return TRUE;
+ }
+
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Received frame: opcode=%d", *pos);
+
+ if (data->state == GPSK_1 && *pos == EAP_GPSK_OPCODE_GPSK_2)
+ return FALSE;
+
+ if (data->state == GPSK_3 && *pos == EAP_GPSK_OPCODE_GPSK_4)
+ return FALSE;
+
+ wpa_printf(MSG_INFO, "EAP-GPSK: Unexpected opcode=%d in state=%d",
+ *pos, data->state);
+
+ return TRUE;
+}
+
+
+static void eap_gpsk_process_gpsk_2(struct eap_sm *sm,
+ struct eap_gpsk_data *data,
+ const u8 *payload, size_t payloadlen)
+{
+ const u8 *pos, *end;
+ u16 alen;
+ const struct eap_gpsk_csuite *csuite;
+ size_t i, miclen;
+ u8 mic[EAP_GPSK_MAX_MIC_LEN];
+
+ if (data->state != GPSK_1)
+ return;
+
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Received Response/GPSK-2");
+
+ pos = payload;
+ end = payload + payloadlen;
+
+ if (end - pos < 2) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "ID_Peer length");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ alen = WPA_GET_BE16(pos);
+ pos += 2;
+ if (end - pos < alen) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "ID_Peer");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ os_free(data->id_peer);
+ data->id_peer = os_malloc(alen);
+ if (data->id_peer == NULL) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Not enough memory to store "
+ "%d-octet ID_Peer", alen);
+ return;
+ }
+ os_memcpy(data->id_peer, pos, alen);
+ data->id_peer_len = alen;
+ wpa_hexdump_ascii(MSG_DEBUG, "EAP-GPSK: ID_Peer",
+ data->id_peer, data->id_peer_len);
+ pos += alen;
+
+ if (end - pos < 2) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "ID_Server length");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ alen = WPA_GET_BE16(pos);
+ pos += 2;
+ if (end - pos < alen) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "ID_Server");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ if (alen != data->id_server_len ||
+ os_memcmp(pos, data->id_server, alen) != 0) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: ID_Server in GPSK-1 and "
+ "GPSK-2 did not match");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ pos += alen;
+
+ if (end - pos < EAP_GPSK_RAND_LEN) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "RAND_Peer");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ os_memcpy(data->rand_peer, pos, EAP_GPSK_RAND_LEN);
+ wpa_hexdump(MSG_DEBUG, "EAP-GPSK: RAND_Peer",
+ data->rand_peer, EAP_GPSK_RAND_LEN);
+ pos += EAP_GPSK_RAND_LEN;
+
+ if (end - pos < EAP_GPSK_RAND_LEN) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "RAND_Server");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ if (os_memcmp(data->rand_server, pos, EAP_GPSK_RAND_LEN) != 0) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: RAND_Server in GPSK-1 and "
+ "GPSK-2 did not match");
+ wpa_hexdump(MSG_DEBUG, "EAP-GPSK: RAND_Server in GPSK-1",
+ data->rand_server, EAP_GPSK_RAND_LEN);
+ wpa_hexdump(MSG_DEBUG, "EAP-GPSK: RAND_Server in GPSK-2",
+ pos, EAP_GPSK_RAND_LEN);
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ pos += EAP_GPSK_RAND_LEN;
+
+ if (end - pos < 2) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "CSuite_List length");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ alen = WPA_GET_BE16(pos);
+ pos += 2;
+ if (end - pos < alen) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "CSuite_List");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ if (alen != data->csuite_count * sizeof(struct eap_gpsk_csuite) ||
+ os_memcmp(pos, data->csuite_list, alen) != 0) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: CSuite_List in GPSK-1 and "
+ "GPSK-2 did not match");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ pos += alen;
+
+ if (end - pos < (int) sizeof(*csuite)) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "CSuite_Sel");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ csuite = (const struct eap_gpsk_csuite *) pos;
+ for (i = 0; i < data->csuite_count; i++) {
+ if (os_memcmp(csuite, &data->csuite_list[i], sizeof(*csuite))
+ == 0)
+ break;
+ }
+ if (i == data->csuite_count) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Peer selected unsupported "
+ "ciphersuite %d:%d",
+ WPA_GET_BE32(csuite->vendor),
+ WPA_GET_BE16(csuite->specifier));
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ data->vendor = WPA_GET_BE32(csuite->vendor);
+ data->specifier = WPA_GET_BE16(csuite->specifier);
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: CSuite_Sel %d:%d",
+ data->vendor, data->specifier);
+ pos += sizeof(*csuite);
+
+ if (end - pos < 2) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "PD_Payload_1 length");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ alen = WPA_GET_BE16(pos);
+ pos += 2;
+ if (end - pos < alen) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "PD_Payload_1");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ wpa_hexdump(MSG_DEBUG, "EAP-GPSK: PD_Payload_1", pos, alen);
+ pos += alen;
+
+ if (sm->user == NULL || sm->user->password == NULL) {
+ wpa_printf(MSG_INFO, "EAP-GPSK: No PSK/password configured "
+ "for the user");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+
+ if (eap_gpsk_derive_keys(sm->user->password, sm->user->password_len,
+ data->vendor, data->specifier,
+ data->rand_peer, data->rand_server,
+ data->id_peer, data->id_peer_len,
+ data->id_server, data->id_server_len,
+ data->msk, data->emsk,
+ data->sk, &data->sk_len,
+ data->pk, &data->pk_len) < 0) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Failed to derive keys");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+
+ miclen = eap_gpsk_mic_len(data->vendor, data->specifier);
+ if (end - pos < (int) miclen) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Message too short for MIC "
+ "(left=%lu miclen=%lu)",
+ (unsigned long) (end - pos),
+ (unsigned long) miclen);
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ if (eap_gpsk_compute_mic(data->sk, data->sk_len, data->vendor,
+ data->specifier, payload, pos - payload, mic)
+ < 0) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Failed to compute MIC");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ if (os_memcmp(mic, pos, miclen) != 0) {
+ wpa_printf(MSG_INFO, "EAP-GPSK: Incorrect MIC in GPSK-2");
+ wpa_hexdump(MSG_DEBUG, "EAP-GPSK: Received MIC", pos, miclen);
+ wpa_hexdump(MSG_DEBUG, "EAP-GPSK: Computed MIC", mic, miclen);
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ pos += miclen;
+
+ if (pos != end) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Ignored %lu bytes of extra "
+ "data in the end of GPSK-2",
+ (unsigned long) (end - pos));
+ }
+
+ eap_gpsk_state(data, GPSK_3);
+}
+
+
+static void eap_gpsk_process_gpsk_4(struct eap_sm *sm,
+ struct eap_gpsk_data *data,
+ const u8 *payload, size_t payloadlen)
+{
+ const u8 *pos, *end;
+ u16 alen;
+ size_t miclen;
+ u8 mic[EAP_GPSK_MAX_MIC_LEN];
+
+ if (data->state != GPSK_3)
+ return;
+
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Received Response/GPSK-4");
+
+ pos = payload;
+ end = payload + payloadlen;
+
+ if (end - pos < 2) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "PD_Payload_1 length");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ alen = WPA_GET_BE16(pos);
+ pos += 2;
+ if (end - pos < alen) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Too short message for "
+ "PD_Payload_1");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ wpa_hexdump(MSG_DEBUG, "EAP-GPSK: PD_Payload_1", pos, alen);
+ pos += alen;
+
+ miclen = eap_gpsk_mic_len(data->vendor, data->specifier);
+ if (end - pos < (int) miclen) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Message too short for MIC "
+ "(left=%lu miclen=%lu)",
+ (unsigned long) (end - pos),
+ (unsigned long) miclen);
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ if (eap_gpsk_compute_mic(data->sk, data->sk_len, data->vendor,
+ data->specifier, payload, pos - payload, mic)
+ < 0) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Failed to compute MIC");
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ if (os_memcmp(mic, pos, miclen) != 0) {
+ wpa_printf(MSG_INFO, "EAP-GPSK: Incorrect MIC in GPSK-4");
+ wpa_hexdump(MSG_DEBUG, "EAP-GPSK: Received MIC", pos, miclen);
+ wpa_hexdump(MSG_DEBUG, "EAP-GPSK: Computed MIC", mic, miclen);
+ eap_gpsk_state(data, FAILURE);
+ return;
+ }
+ pos += miclen;
+
+ if (pos != end) {
+ wpa_printf(MSG_DEBUG, "EAP-GPSK: Ignored %lu bytes of extra "
+ "data in the end of GPSK-4",
+ (unsigned long) (end - pos));
+ }
+
+ eap_gpsk_state(data, SUCCESS);
+}
+
+
+static void eap_gpsk_process(struct eap_sm *sm, void *priv,
+ struct wpabuf *respData)
+{
+ struct eap_gpsk_data *data = priv;
+ const u8 *pos;
+ size_t len;
+
+ pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_GPSK, respData, &len);
+ if (pos == NULL || len < 1)
+ return;
+
+ switch (*pos) {
+ case EAP_GPSK_OPCODE_GPSK_2:
+ eap_gpsk_process_gpsk_2(sm, data, pos + 1, len - 1);
+ break;
+ case EAP_GPSK_OPCODE_GPSK_4:
+ eap_gpsk_process_gpsk_4(sm, data, pos + 1, len - 1);
+ break;
+ }
+}
+
+
+static Boolean eap_gpsk_isDone(struct eap_sm *sm, void *priv)
+{
+ struct eap_gpsk_data *data = priv;
+ return data->state == SUCCESS || data->state == FAILURE;
+}
+
+
+static u8 * eap_gpsk_getKey(struct eap_sm *sm, void *priv, size_t *len)
+{
+ struct eap_gpsk_data *data = priv;
+ u8 *key;
+
+ if (data->state != SUCCESS)
+ return NULL;
+
+ key = os_malloc(EAP_MSK_LEN);
+ if (key == NULL)
+ return NULL;
+ os_memcpy(key, data->msk, EAP_MSK_LEN);
+ *len = EAP_MSK_LEN;
+
+ return key;
+}
+
+
+static u8 * eap_gpsk_get_emsk(struct eap_sm *sm, void *priv, size_t *len)
+{
+ struct eap_gpsk_data *data = priv;
+ u8 *key;
+
+ if (data->state != SUCCESS)
+ return NULL;
+
+ key = os_malloc(EAP_EMSK_LEN);
+ if (key == NULL)
+ return NULL;
+ os_memcpy(key, data->emsk, EAP_EMSK_LEN);
+ *len = EAP_EMSK_LEN;
+
+ return key;
+}
+
+
+static Boolean eap_gpsk_isSuccess(struct eap_sm *sm, void *priv)
+{
+ struct eap_gpsk_data *data = priv;
+ return data->state == SUCCESS;
+}
+
+
+int eap_server_gpsk_register(void)
+{
+ struct eap_method *eap;
+ int ret;
+
+ eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
+ EAP_VENDOR_IETF, EAP_TYPE_GPSK, "GPSK");
+ if (eap == NULL)
+ return -1;
+
+ eap->init = eap_gpsk_init;
+ eap->reset = eap_gpsk_reset;
+ eap->buildReq = eap_gpsk_buildReq;
+ eap->check = eap_gpsk_check;
+ eap->process = eap_gpsk_process;
+ eap->isDone = eap_gpsk_isDone;
+ eap->getKey = eap_gpsk_getKey;
+ eap->isSuccess = eap_gpsk_isSuccess;
+ eap->get_emsk = eap_gpsk_get_emsk;
+
+ ret = eap_server_method_register(eap);
+ if (ret)
+ eap_server_method_free(eap);
+ return ret;
+}