eap_sim.c revision f86232838cf712377867cb42417c1613ab5dc425
1f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner/* 2f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner * EAP peer method: EAP-SIM (RFC 4186) 3f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner * Copyright (c) 2004-2012, Jouni Malinen <j@w1.fi> 4f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner * 5f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner * This software may be distributed under the terms of the BSD license. 6f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner * See README for more details. 7f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner */ 8f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 9f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#include "includes.h" 10f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 11f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#include "common.h" 12f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#include "pcsc_funcs.h" 13f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#include "crypto/milenage.h" 14f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#include "crypto/random.h" 15f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#include "eap_peer/eap_i.h" 16f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#include "eap_config.h" 17f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#include "eap_common/eap_sim_common.h" 18ffef8acc3e3398bdd04e947c7949befdd52faf86Dan Gohman 19f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 20a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattnerstruct eap_sim_data { 218c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner u8 *ver_list; 22f9bdeddb96043559c61f176f8077e3b91a0c544fChris Lattner size_t ver_list_len; 23b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes int selected_version; 248da8d4b12a7e36e219894c256f545ddea66a9c49Chris Lattner size_t min_num_chal, num_chal; 2545111d160cf0910030eeb6a949c69273502e5ad5Chris Lattner 26f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner u8 kc[3][EAP_SIM_KC_LEN]; 275277b22687d3513dd29d5a9c8510cac740f933f6Chris Lattner u8 sres[3][EAP_SIM_SRES_LEN]; 28f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner u8 nonce_mt[EAP_SIM_NONCE_MT_LEN], nonce_s[EAP_SIM_NONCE_S_LEN]; 298f9b0f6e881a63875e7c41319eca31751588799aChris Lattner u8 mk[EAP_SIM_MK_LEN]; 308da8d4b12a7e36e219894c256f545ddea66a9c49Chris Lattner u8 k_aut[EAP_SIM_K_AUT_LEN]; 315dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner u8 k_encr[EAP_SIM_K_ENCR_LEN]; 32f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner u8 msk[EAP_SIM_KEYING_DATA_LEN]; 33f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner u8 emsk[EAP_EMSK_LEN]; 34f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner u8 rand[3][GSM_RAND_LEN]; 35f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 36f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner int num_id_req, num_notification; 37f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner u8 *pseudonym; 38f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner size_t pseudonym_len; 39a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner u8 *reauth_id; 40f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner size_t reauth_id_len; 41f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner int reauth; 42824583844a8f334dd261894a3fac7ad476531667Chris Lattner unsigned int counter, counter_too_small; 43f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner u8 *last_eap_identity; 4480ec2792b2b271eca55743a3cc4c8bca214fa705Chris Lattner size_t last_eap_identity_len; 4580ec2792b2b271eca55743a3cc4c8bca214fa705Chris Lattner enum { 46d5bbb07ec806e6fa1e804afd7073987fdacc83e4Chris Lattner CONTINUE, RESULT_SUCCESS, RESULT_FAILURE, SUCCESS, FAILURE 4735039ac24163e99cfab161620a9fb41f944a63d5Chris Lattner } state; 4818a4c16726db2b8874c7b84d04650dda80746074Chris Lattner int result_ind, use_result_ind; 4918a4c16726db2b8874c7b84d04650dda80746074Chris Lattner}; 5018a4c16726db2b8874c7b84d04650dda80746074Chris Lattner 5118a4c16726db2b8874c7b84d04650dda80746074Chris Lattner 5218a4c16726db2b8874c7b84d04650dda80746074Chris Lattner#ifndef CONFIG_NO_STDOUT_DEBUG 5318a4c16726db2b8874c7b84d04650dda80746074Chris Lattnerstatic const char * eap_sim_state_txt(int state) 5418a4c16726db2b8874c7b84d04650dda80746074Chris Lattner{ 5518a4c16726db2b8874c7b84d04650dda80746074Chris Lattner switch (state) { 5618a4c16726db2b8874c7b84d04650dda80746074Chris Lattner case CONTINUE: 5718a4c16726db2b8874c7b84d04650dda80746074Chris Lattner return "CONTINUE"; 5818a4c16726db2b8874c7b84d04650dda80746074Chris Lattner case RESULT_SUCCESS: 5918a4c16726db2b8874c7b84d04650dda80746074Chris Lattner return "RESULT_SUCCESS"; 6018a4c16726db2b8874c7b84d04650dda80746074Chris Lattner case RESULT_FAILURE: 61f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return "RESULT_FAILURE"; 62f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner case SUCCESS: 63f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return "SUCCESS"; 64f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner case FAILURE: 65f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return "FAILURE"; 66f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner default: 67f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return "?"; 688ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov } 69f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner} 70f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#endif /* CONFIG_NO_STDOUT_DEBUG */ 71f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 728ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 73f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattnerstatic void eap_sim_state(struct eap_sim_data *data, int state) 74f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner{ 75f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: %s -> %s", 768ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov eap_sim_state_txt(data->state), 77f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner eap_sim_state_txt(state)); 78f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->state = state; 79f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner} 808ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 81f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 82f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattnerstatic void * eap_sim_init(struct eap_sm *sm) 83f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner{ 848ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov struct eap_sim_data *data; 85f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner struct eap_peer_config *config = eap_get_config(sm); 86f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 87f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data = os_zalloc(sizeof(*data)); 88f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (data == NULL) 891850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner return NULL; 901850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner 911850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner if (random_get_bytes(data->nonce_mt, EAP_SIM_NONCE_MT_LEN)) { 921850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Failed to get random data " 931850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner "for NONCE_MT"); 948ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov os_free(data); 95f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return NULL; 961850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner } 971850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner 981850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner data->min_num_chal = 2; 991850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner if (config && config->phase1) { 1001850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner char *pos = os_strstr(config->phase1, "sim_min_num_chal="); 1011850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner if (pos) { 1021850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner data->min_num_chal = atoi(pos + 17); 1038ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if (data->min_num_chal < 2 || data->min_num_chal > 3) { 1041850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Invalid " 1051850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner "sim_min_num_chal configuration " 1061850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner "(%lu, expected 2 or 3)", 1071850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner (unsigned long) data->min_num_chal); 1081850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner os_free(data); 1091850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner return NULL; 110f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 1111850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: Set minimum number of " 112f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner "challenges to %lu", 113f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner (unsigned long) data->min_num_chal); 114f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 1151850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner 116f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->result_ind = os_strstr(config->phase1, "result_ind=1") != 117f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner NULL; 118f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 119f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 12058bed8fc29b6e55e7014dcb537808043c946cd73Chris Lattner if (config && config->anonymous_identity) { 121968ff1196768c0b6dbcc5508025a2923bfa73fabChris Lattner data->pseudonym = os_malloc(config->anonymous_identity_len); 122968ff1196768c0b6dbcc5508025a2923bfa73fabChris Lattner if (data->pseudonym) { 123968ff1196768c0b6dbcc5508025a2923bfa73fabChris Lattner os_memcpy(data->pseudonym, config->anonymous_identity, 124968ff1196768c0b6dbcc5508025a2923bfa73fabChris Lattner config->anonymous_identity_len); 12558bed8fc29b6e55e7014dcb537808043c946cd73Chris Lattner data->pseudonym_len = config->anonymous_identity_len; 12658bed8fc29b6e55e7014dcb537808043c946cd73Chris Lattner } 12758bed8fc29b6e55e7014dcb537808043c946cd73Chris Lattner } 12858bed8fc29b6e55e7014dcb537808043c946cd73Chris Lattner 1298ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov eap_sim_state(data, CONTINUE); 130f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 1318ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return data; 132f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner} 133f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 134f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 1352798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattnerstatic void eap_sim_deinit(struct eap_sm *sm, void *priv) 1368ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov{ 137f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner struct eap_sim_data *data = priv; 138f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (data) { 139f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner os_free(data->ver_list); 1402798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner os_free(data->pseudonym); 1412798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner os_free(data->reauth_id); 142f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner os_free(data->last_eap_identity); 143f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner os_free(data); 144a3839bc3714e6a84222f45cf4c0f1a20a88b10cdChris Lattner } 145a3839bc3714e6a84222f45cf4c0f1a20a88b10cdChris Lattner} 146a3839bc3714e6a84222f45cf4c0f1a20a88b10cdChris Lattner 147a3839bc3714e6a84222f45cf4c0f1a20a88b10cdChris Lattner 148f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattnerstatic int eap_sim_gsm_auth(struct eap_sm *sm, struct eap_sim_data *data) 149ce8749e445fdd0493758932874bad50293647df9Chris Lattner{ 150ce8749e445fdd0493758932874bad50293647df9Chris Lattner struct eap_peer_config *conf; 151ce8749e445fdd0493758932874bad50293647df9Chris Lattner 152ce8749e445fdd0493758932874bad50293647df9Chris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: GSM authentication algorithm"); 153ce8749e445fdd0493758932874bad50293647df9Chris Lattner 1542798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner conf = eap_get_config(sm); 155ce8749e445fdd0493758932874bad50293647df9Chris Lattner if (conf == NULL) 156f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return -1; 157f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (conf->pcsc) { 1588ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if (scard_gsm_auth(sm->scard_ctx, data->rand[0], 159f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->sres[0], data->kc[0]) || 160f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner scard_gsm_auth(sm->scard_ctx, data->rand[1], 161f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->sres[1], data->kc[1]) || 162f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner (data->num_chal > 2 && 163f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner scard_gsm_auth(sm->scard_ctx, data->rand[2], 164f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->sres[2], data->kc[2]))) { 165f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: GSM SIM " 1668f9b0f6e881a63875e7c41319eca31751588799aChris Lattner "authentication could not be completed"); 167f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return -1; 168f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 1691850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner return 0; 1701850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner } 1718ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 1721850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner#ifdef CONFIG_SIM_SIMULATOR 1731850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner if (conf->password) { 1741850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner u8 opc[16], k[16]; 1751850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner const char *pos; 1761850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner size_t i; 1771850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: Use internal GSM-Milenage " 1781850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner "implementation for authentication"); 1791850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner if (conf->password_len < 65) { 1808ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_DEBUG, "EAP-SIM: invalid GSM-Milenage " 1811850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner "password"); 1821850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner return -1; 1831850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner } 1841850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner pos = (const char *) conf->password; 1851850e5add1516e945bbabf7e456c305f4bd5cc6fChris Lattner if (hexstr2bin(pos, k, 16)) 1868ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return -1; 187f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner pos += 32; 188f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (*pos != ':') 189f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return -1; 190f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner pos++; 1912798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner 1922798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner if (hexstr2bin(pos, opc, 16)) 1932798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner return -1; 1942798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner 195f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner for (i = 0; i < data->num_chal; i++) { 1968ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if (gsm_milenage(opc, k, data->rand[i], 197f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->sres[i], data->kc[i])) { 198f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: " 199f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner "GSM-Milenage authentication " 200f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner "could not be completed"); 201f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return -1; 202f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 203f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_hexdump(MSG_DEBUG, "EAP-SIM: RAND", 2042798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner data->rand[i], GSM_RAND_LEN); 2058ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: SRES", 206f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->sres[i], EAP_SIM_SRES_LEN); 207f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: Kc", 2082798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner data->kc[i], EAP_SIM_KC_LEN); 2098ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov } 210f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return 0; 211f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 212f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#endif /* CONFIG_SIM_SIMULATOR */ 213f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 214f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#ifdef CONFIG_SIM_HARDCODED 215f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner /* These hardcoded Kc and SRES values are used for testing. RAND to 216f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner * KC/SREC mapping is very bogus as far as real authentication is 2172798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner * concerned, but it is quite useful for cases where the AS is rotating 2188ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov * the order of pre-configured values. */ 219f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner { 220f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner size_t i; 2212798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner 222f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: Use hardcoded Kc and SRES " 223f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner "values for testing"); 224f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 225f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner for (i = 0; i < data->num_chal; i++) { 226f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (data->rand[i][0] == 0xaa) { 227f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner os_memcpy(data->kc[i], 228f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7", 229f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner EAP_SIM_KC_LEN); 230f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner os_memcpy(data->sres[i], "\xd1\xd2\xd3\xd4", 2312798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner EAP_SIM_SRES_LEN); 232f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } else if (data->rand[i][0] == 0xbb) { 233f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner os_memcpy(data->kc[i], 2348f9b0f6e881a63875e7c41319eca31751588799aChris Lattner "\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7", 235f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner EAP_SIM_KC_LEN); 2362798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner os_memcpy(data->sres[i], "\xe1\xe2\xe3\xe4", 237f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner EAP_SIM_SRES_LEN); 2382798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner } else { 239f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner os_memcpy(data->kc[i], 2402798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner "\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7", 241f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner EAP_SIM_KC_LEN); 242f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner os_memcpy(data->sres[i], "\xf1\xf2\xf3\xf4", 243f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner EAP_SIM_SRES_LEN); 244f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 245f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 246f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 247a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner 24858bed8fc29b6e55e7014dcb537808043c946cd73Chris Lattner return 0; 249e53a600f065075731d0aeb9dc8f4f3d75f5a05f8Chris Lattner 250f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner#else /* CONFIG_SIM_HARDCODED */ 25124f654c8a4d14066233480f683d3b0dececf374aChris Lattner 25224f654c8a4d14066233480f683d3b0dececf374aChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: No GSM authentication algorithm " 2538ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov "enabled"); 2548ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return -1; 255f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 256f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner#endif /* CONFIG_SIM_HARDCODED */ 257f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner} 258f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 25958bed8fc29b6e55e7014dcb537808043c946cd73Chris Lattner 260f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattnerstatic int eap_sim_supported_ver(int version) 261a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner{ 262f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return version == EAP_SIM_VERSION; 263f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner} 264e53a600f065075731d0aeb9dc8f4f3d75f5a05f8Chris Lattner 265f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 266f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner#define CLEAR_PSEUDONYM 0x01 2678ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov#define CLEAR_REAUTH_ID 0x02 268f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner#define CLEAR_EAP_ID 0x04 269f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 2708ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikovstatic void eap_sim_clear_identities(struct eap_sm *sm, 271824583844a8f334dd261894a3fac7ad476531667Chris Lattner struct eap_sim_data *data, int id) 272824583844a8f334dd261894a3fac7ad476531667Chris Lattner{ 2738ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if ((id & CLEAR_PSEUDONYM) && data->pseudonym) { 274f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: forgetting old pseudonym"); 275f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner os_free(data->pseudonym); 276f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->pseudonym = NULL; 277f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->pseudonym_len = 0; 278f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner eap_set_anon_id(sm, NULL, 0); 279f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 28083d77faf6e8fc2c1c2377d037283dc162d8667a1Chris Lattner if ((id & CLEAR_REAUTH_ID) && data->reauth_id) { 281f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: forgetting old reauth_id"); 282f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner os_free(data->reauth_id); 283a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner data->reauth_id = NULL; 28483d77faf6e8fc2c1c2377d037283dc162d8667a1Chris Lattner data->reauth_id_len = 0; 285f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 286f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if ((id & CLEAR_EAP_ID) && data->last_eap_identity) { 2878ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_DEBUG, "EAP-SIM: forgetting old eap_id"); 288f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner os_free(data->last_eap_identity); 289f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->last_eap_identity = NULL; 290f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->last_eap_identity_len = 0; 2918c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner } 2928c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner} 2938c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner 2948c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner 2958c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattnerstatic int eap_sim_learn_ids(struct eap_sm *sm, struct eap_sim_data *data, 2968c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner struct eap_sim_attrs *attr) 2978c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner{ 2988c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner if (attr->next_pseudonym) { 2998c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner const u8 *identity = NULL; 3008c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner size_t identity_len = 0; 3018c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner const u8 *realm = NULL; 3028c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner size_t realm_len = 0; 3038c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner 3048c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner wpa_hexdump_ascii(MSG_DEBUG, 3058609c7c931c0213d6d29f665df2110cf3c709e4cChris Lattner "EAP-SIM: (encr) AT_NEXT_PSEUDONYM", 3068c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner attr->next_pseudonym, 3078c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner attr->next_pseudonym_len); 3088c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner os_free(data->pseudonym); 3098c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner /* Look for the realm of the permanent identity */ 3108c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner identity = eap_get_config_identity(sm, &identity_len); 3118c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner if (identity) { 31245111d160cf0910030eeb6a949c69273502e5ad5Chris Lattner for (realm = identity, realm_len = identity_len; 3138c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner realm_len > 0; realm_len--, realm++) { 3148c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner if (*realm == '@') 3158c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner break; 3168c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner } 317f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 318f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->pseudonym = os_malloc(attr->next_pseudonym_len + 319f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner realm_len); 320f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (data->pseudonym == NULL) { 321f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_INFO, "EAP-SIM: (encr) No memory for " 32238cff389af1d78bd80df0479ef258493e0c5897eChris Lattner "next pseudonym"); 32338cff389af1d78bd80df0479ef258493e0c5897eChris Lattner data->pseudonym_len = 0; 32438cff389af1d78bd80df0479ef258493e0c5897eChris Lattner return -1; 32538cff389af1d78bd80df0479ef258493e0c5897eChris Lattner } 32638cff389af1d78bd80df0479ef258493e0c5897eChris Lattner os_memcpy(data->pseudonym, attr->next_pseudonym, 32738cff389af1d78bd80df0479ef258493e0c5897eChris Lattner attr->next_pseudonym_len); 328f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (realm_len) { 329fbf1d271e6a7157c1b5432e84d5633f63869b5a8Chris Lattner os_memcpy(data->pseudonym + attr->next_pseudonym_len, 330b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes realm, realm_len); 331b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } 33238cff389af1d78bd80df0479ef258493e0c5897eChris Lattner data->pseudonym_len = attr->next_pseudonym_len + realm_len; 33338cff389af1d78bd80df0479ef258493e0c5897eChris Lattner eap_set_anon_id(sm, data->pseudonym, data->pseudonym_len); 33438cff389af1d78bd80df0479ef258493e0c5897eChris Lattner } 3358ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 33638cff389af1d78bd80df0479ef258493e0c5897eChris Lattner if (attr->next_reauth_id) { 337b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes os_free(data->reauth_id); 33838cff389af1d78bd80df0479ef258493e0c5897eChris Lattner data->reauth_id = os_malloc(attr->next_reauth_id_len); 3398ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if (data->reauth_id == NULL) { 340fdf229eda95a542fc34d5182e1a91a22789ba122Bruno Cardoso Lopes wpa_printf(MSG_INFO, "EAP-SIM: (encr) No memory for " 341fdf229eda95a542fc34d5182e1a91a22789ba122Bruno Cardoso Lopes "next reauth_id"); 342fbf1d271e6a7157c1b5432e84d5633f63869b5a8Chris Lattner data->reauth_id_len = 0; 343fbf1d271e6a7157c1b5432e84d5633f63869b5a8Chris Lattner return -1; 344f26e03bc7e30162197641406e37e662a15d80f7eChris Lattner } 345f26e03bc7e30162197641406e37e662a15d80f7eChris Lattner os_memcpy(data->reauth_id, attr->next_reauth_id, 34676d5ccf6afd5ae253cf3d5c2cf6acc712643d8cbBenjamin Kramer attr->next_reauth_id_len); 34776d5ccf6afd5ae253cf3d5c2cf6acc712643d8cbBenjamin Kramer data->reauth_id_len = attr->next_reauth_id_len; 348a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner wpa_hexdump_ascii(MSG_DEBUG, 349f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner "EAP-SIM: (encr) AT_NEXT_REAUTH_ID", 3508ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov data->reauth_id, 351b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes data->reauth_id_len); 352b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } 353b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 3548ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return 0; 3558ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov} 356b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 357b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 358b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopesstatic struct wpabuf * eap_sim_client_error(struct eap_sim_data *data, u8 id, 359b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes int err) 3608ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov{ 361b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes struct eap_sim_msg *msg; 362b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 363b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes eap_sim_state(data, FAILURE); 364b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes data->num_id_req = 0; 3658ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov data->num_notification = 0; 3668ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 3678ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_DEBUG, "EAP-SIM: Send Client-Error (error code %d)", 368b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes err); 369b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_SIM, 3708ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov EAP_SIM_SUBTYPE_CLIENT_ERROR); 371b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes eap_sim_msg_add(msg, EAP_SIM_AT_CLIENT_ERROR_CODE, err, NULL, 0); 3728ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return eap_sim_msg_finish(msg, NULL, NULL, 0); 373b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes} 3748ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 3758ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 376b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopesstatic struct wpabuf * eap_sim_response_start(struct eap_sm *sm, 377b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes struct eap_sim_data *data, u8 id, 378b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes enum eap_sim_id_req id_req) 379b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes{ 3808ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov const u8 *identity = NULL; 381b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes size_t identity_len = 0; 382b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes struct eap_sim_msg *msg; 383b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 384b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes data->reauth = 0; 3858ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if (id_req == ANY_ID && data->reauth_id) { 386b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes identity = data->reauth_id; 387b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes identity_len = data->reauth_id_len; 388b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes data->reauth = 1; 389b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } else if ((id_req == ANY_ID || id_req == FULLAUTH_ID) && 3908ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov data->pseudonym) { 391b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes identity = data->pseudonym; 392b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes identity_len = data->pseudonym_len; 393b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes eap_sim_clear_identities(sm, data, CLEAR_REAUTH_ID); 394b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } else if (id_req != NO_ID_REQ) { 3958ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov identity = eap_get_config_identity(sm, &identity_len); 396b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes if (identity) { 397b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes eap_sim_clear_identities(sm, data, CLEAR_PSEUDONYM | 398b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes CLEAR_REAUTH_ID); 3998ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov } 4008ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov } 401b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes if (id_req != NO_ID_REQ) 402b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes eap_sim_clear_identities(sm, data, CLEAR_EAP_ID); 403b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 404b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes wpa_printf(MSG_DEBUG, "Generating EAP-SIM Start (id=%d)", id); 4058ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, 406b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes EAP_TYPE_SIM, EAP_SIM_SUBTYPE_START); 407b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes if (!data->reauth) { 408b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes wpa_hexdump(MSG_DEBUG, " AT_NONCE_MT", 409b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes data->nonce_mt, EAP_SIM_NONCE_MT_LEN); 4108ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov eap_sim_msg_add(msg, EAP_SIM_AT_NONCE_MT, 0, 411b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes data->nonce_mt, EAP_SIM_NONCE_MT_LEN); 412b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes wpa_printf(MSG_DEBUG, " AT_SELECTED_VERSION %d", 413b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes data->selected_version); 41480ec2792b2b271eca55743a3cc4c8bca214fa705Chris Lattner eap_sim_msg_add(msg, EAP_SIM_AT_SELECTED_VERSION, 41580ec2792b2b271eca55743a3cc4c8bca214fa705Chris Lattner data->selected_version, NULL, 0); 4168ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov } 417b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 418b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes if (identity) { 419b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes wpa_hexdump_ascii(MSG_DEBUG, " AT_IDENTITY", 42080ec2792b2b271eca55743a3cc4c8bca214fa705Chris Lattner identity, identity_len); 421b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes eap_sim_msg_add(msg, EAP_SIM_AT_IDENTITY, identity_len, 422b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes identity, identity_len); 423b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } 4248ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 42518a4c16726db2b8874c7b84d04650dda80746074Chris Lattner return eap_sim_msg_finish(msg, NULL, NULL, 0); 4268ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov} 427d5bbb07ec806e6fa1e804afd7073987fdacc83e4Chris Lattner 428d5bbb07ec806e6fa1e804afd7073987fdacc83e4Chris Lattner 429d5bbb07ec806e6fa1e804afd7073987fdacc83e4Chris Lattnerstatic struct wpabuf * eap_sim_response_challenge(struct eap_sim_data *data, 430d5bbb07ec806e6fa1e804afd7073987fdacc83e4Chris Lattner u8 id) 431d5bbb07ec806e6fa1e804afd7073987fdacc83e4Chris Lattner{ 432b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes struct eap_sim_msg *msg; 433b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 43435039ac24163e99cfab161620a9fb41f944a63d5Chris Lattner wpa_printf(MSG_DEBUG, "Generating EAP-SIM Challenge (id=%d)", id); 4358ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_SIM, 436b6ab29940de8ead5b5612ae5414adc4d11e0b2e7Chris Lattner EAP_SIM_SUBTYPE_CHALLENGE); 437b6ab29940de8ead5b5612ae5414adc4d11e0b2e7Chris Lattner if (data->use_result_ind) { 4388ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_DEBUG, " AT_RESULT_IND"); 43918a4c16726db2b8874c7b84d04650dda80746074Chris Lattner eap_sim_msg_add(msg, EAP_SIM_AT_RESULT_IND, 0, NULL, 0); 4408ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov } 4418ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_DEBUG, " AT_MAC"); 442b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 4438ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return eap_sim_msg_finish(msg, data->k_aut, (u8 *) data->sres, 4448ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov data->num_chal * EAP_SIM_SRES_LEN); 445b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes} 4468ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 4478ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 448b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopesstatic struct wpabuf * eap_sim_response_reauth(struct eap_sim_data *data, 4498ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov u8 id, int counter_too_small, 4508ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov const u8 *nonce_s) 451b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes{ 4528ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov struct eap_sim_msg *msg; 4538ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov unsigned int counter; 454b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 4558ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_DEBUG, "Generating EAP-SIM Reauthentication (id=%d)", 4568ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov id); 457b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_SIM, 4588ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov EAP_SIM_SUBTYPE_REAUTHENTICATION); 459b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes wpa_printf(MSG_DEBUG, " AT_IV"); 460b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes wpa_printf(MSG_DEBUG, " AT_ENCR_DATA"); 4618ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov eap_sim_msg_add_encr_start(msg, EAP_SIM_AT_IV, EAP_SIM_AT_ENCR_DATA); 4628ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 463b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes if (counter_too_small) { 4648ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_DEBUG, " *AT_COUNTER_TOO_SMALL"); 4658ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER_TOO_SMALL, 0, NULL, 0); 466b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes counter = data->counter_too_small; 4678ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov } else 4688ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov counter = data->counter; 469b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 4708ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_DEBUG, " *AT_COUNTER %d", counter); 4718ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER, counter, NULL, 0); 472b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 473f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (eap_sim_msg_add_encr_end(msg, data->k_encr, EAP_SIM_AT_PADDING)) { 474f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Failed to encrypt " 475f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner "AT_ENCR_DATA"); 4768ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov eap_sim_msg_free(msg); 47724f654c8a4d14066233480f683d3b0dececf374aChris Lattner return NULL; 478f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 4798ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if (data->use_result_ind) { 480f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_DEBUG, " AT_RESULT_IND"); 4814c0b349253d6de7054fd38fe8492fb32a19f21b6Anton Korobeynikov eap_sim_msg_add(msg, EAP_SIM_AT_RESULT_IND, 0, NULL, 0); 4824c0b349253d6de7054fd38fe8492fb32a19f21b6Anton Korobeynikov } 4834c0b349253d6de7054fd38fe8492fb32a19f21b6Anton Korobeynikov wpa_printf(MSG_DEBUG, " AT_MAC"); 484f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 4854c0b349253d6de7054fd38fe8492fb32a19f21b6Anton Korobeynikov return eap_sim_msg_finish(msg, data->k_aut, nonce_s, 4864c0b349253d6de7054fd38fe8492fb32a19f21b6Anton Korobeynikov EAP_SIM_NONCE_S_LEN); 487f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner} 488f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 4892798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner 4908ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikovstatic struct wpabuf * eap_sim_response_notification(struct eap_sim_data *data, 491f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner u8 id, u16 notification) 492f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner{ 493f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner struct eap_sim_msg *msg; 494f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner u8 *k_aut = (notification & 0x4000) == 0 ? data->k_aut : NULL; 4952798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner 4968ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_DEBUG, "Generating EAP-SIM Notification (id=%d)", id); 497f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, 498f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner EAP_TYPE_SIM, EAP_SIM_SUBTYPE_NOTIFICATION); 499f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (k_aut && data->reauth) { 500f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_DEBUG, " AT_IV"); 5012798119ab4d7e0b42812b3acdf37821f40dee627Chris Lattner wpa_printf(MSG_DEBUG, " AT_ENCR_DATA"); 5028ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov eap_sim_msg_add_encr_start(msg, EAP_SIM_AT_IV, 503f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner EAP_SIM_AT_ENCR_DATA); 504f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_DEBUG, " *AT_COUNTER %d", data->counter); 505f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER, data->counter, 506b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes NULL, 0); 5074813035b726e7f0a3fd17bec437185fc72a50988Chris Lattner if (eap_sim_msg_add_encr_end(msg, data->k_encr, 508b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes EAP_SIM_AT_PADDING)) { 5094813035b726e7f0a3fd17bec437185fc72a50988Chris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Failed to encrypt " 510b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes "AT_ENCR_DATA"); 511b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes eap_sim_msg_free(msg); 5124813035b726e7f0a3fd17bec437185fc72a50988Chris Lattner return NULL; 513b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } 514b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } 5154813035b726e7f0a3fd17bec437185fc72a50988Chris Lattner if (k_aut) { 516b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes wpa_printf(MSG_DEBUG, " AT_MAC"); 517b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 518b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } 519b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes return eap_sim_msg_finish(msg, k_aut, (u8 *) "", 0); 520b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes} 521b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 522b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 523b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopesstatic struct wpabuf * eap_sim_process_start(struct eap_sm *sm, 524b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes struct eap_sim_data *data, u8 id, 525b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes struct eap_sim_attrs *attr) 526b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes{ 527b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes int selected_version = -1, id_error; 528b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes size_t i; 529b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes u8 *pos; 530b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 5318ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_DEBUG, "EAP-SIM: subtype Start"); 532848c29396271b8255653b6c6b61b5482bd72c293Anton Korobeynikov if (attr->version_list == NULL) { 533848c29396271b8255653b6c6b61b5482bd72c293Anton Korobeynikov wpa_printf(MSG_INFO, "EAP-SIM: No AT_VERSION_LIST in " 5348ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov "SIM/Start"); 535b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes return eap_sim_client_error(data, id, 536b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes EAP_SIM_UNSUPPORTED_VERSION); 5378ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov } 538b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes 539b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes os_free(data->ver_list); 5408ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov data->ver_list = os_malloc(attr->version_list_len); 541b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes if (data->ver_list == NULL) { 542b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes wpa_printf(MSG_DEBUG, "EAP-SIM: Failed to allocate " 543b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes "memory for version list"); 544b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes return eap_sim_client_error(data, id, 545b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes EAP_SIM_UNABLE_TO_PROCESS_PACKET); 546b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } 547b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes os_memcpy(data->ver_list, attr->version_list, attr->version_list_len); 548b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes data->ver_list_len = attr->version_list_len; 549b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes pos = data->ver_list; 550b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes for (i = 0; i < data->ver_list_len / 2; i++) { 551b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes int ver = pos[0] * 256 + pos[1]; 552b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes pos += 2; 55324f654c8a4d14066233480f683d3b0dececf374aChris Lattner if (eap_sim_supported_ver(ver)) { 5548ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov selected_version = ver; 55524f654c8a4d14066233480f683d3b0dececf374aChris Lattner break; 556b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } 557b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } 55824f654c8a4d14066233480f683d3b0dececf374aChris Lattner if (selected_version < 0) { 559b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes wpa_printf(MSG_INFO, "EAP-SIM: Could not find a supported " 5608ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov "version"); 5618ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return eap_sim_client_error(data, id, 5628ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov EAP_SIM_UNSUPPORTED_VERSION); 563b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes } 56424f654c8a4d14066233480f683d3b0dececf374aChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: Selected Version %d", 565f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner selected_version); 566f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->selected_version = selected_version; 567f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 568f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner id_error = 0; 5698ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov switch (attr->id_req) { 570f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner case NO_ID_REQ: 571f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner break; 5728ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov case ANY_ID: 573f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (data->num_id_req > 0) 574f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner id_error++; 575f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->num_id_req++; 576f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner break; 5778ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov case FULLAUTH_ID: 578f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (data->num_id_req > 1) 579f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner id_error++; 580f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->num_id_req++; 581f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner break; 582a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner case PERMANENT_ID: 583f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner if (data->num_id_req > 2) 584e53a600f065075731d0aeb9dc8f4f3d75f5a05f8Chris Lattner id_error++; 5858ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov data->num_id_req++; 586f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner break; 587f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 588c7fbe903898ebf322cc375127bca85f4011cb266Chris Lattner if (id_error) { 589f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner wpa_printf(MSG_INFO, "EAP-SIM: Too many ID requests " 590acd03ae6791fc0fb9f1b05247a1dc082b46b8d8bChris Lattner "used within one authentication"); 5914813035b726e7f0a3fd17bec437185fc72a50988Chris Lattner return eap_sim_client_error(data, id, 5928da8d4b12a7e36e219894c256f545ddea66a9c49Chris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 593acd03ae6791fc0fb9f1b05247a1dc082b46b8d8bChris Lattner } 594acd03ae6791fc0fb9f1b05247a1dc082b46b8d8bChris Lattner 595f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return eap_sim_response_start(sm, data, id, attr->id_req); 5968ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov} 597f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner 5988ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 5993b24c0172069a2546cd095e4b91f8b88c1ea0722Chris Lattnerstatic struct wpabuf * eap_sim_process_challenge(struct eap_sm *sm, 6003b24c0172069a2546cd095e4b91f8b88c1ea0722Chris Lattner struct eap_sim_data *data, 6013b24c0172069a2546cd095e4b91f8b88c1ea0722Chris Lattner u8 id, 6028ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov const struct wpabuf *reqData, 603067fe1ae5488764afb8d8fdafba65899dc221887Chris Lattner struct eap_sim_attrs *attr) 604067fe1ae5488764afb8d8fdafba65899dc221887Chris Lattner{ 605067fe1ae5488764afb8d8fdafba65899dc221887Chris Lattner const u8 *identity; 6068ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov size_t identity_len; 607067fe1ae5488764afb8d8fdafba65899dc221887Chris Lattner struct eap_sim_attrs eattr; 6088ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 6097e88a50428377813606c66ac47111d9c3ea44febChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: subtype Challenge"); 6103b24c0172069a2546cd095e4b91f8b88c1ea0722Chris Lattner data->reauth = 0; 6117e88a50428377813606c66ac47111d9c3ea44febChris Lattner if (!attr->mac || !attr->rand) { 6123b24c0172069a2546cd095e4b91f8b88c1ea0722Chris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Challenge message " 6137e88a50428377813606c66ac47111d9c3ea44febChris Lattner "did not include%s%s", 6143b24c0172069a2546cd095e4b91f8b88c1ea0722Chris Lattner !attr->mac ? " AT_MAC" : "", 6153b24c0172069a2546cd095e4b91f8b88c1ea0722Chris Lattner !attr->rand ? " AT_RAND" : ""); 6168ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return eap_sim_client_error(data, id, 6178ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov EAP_SIM_UNABLE_TO_PROCESS_PACKET); 6187e88a50428377813606c66ac47111d9c3ea44febChris Lattner } 6198ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 6208ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_DEBUG, "EAP-SIM: %lu challenges", 6218ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov (unsigned long) attr->num_chal); 6228ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if (attr->num_chal < data->min_num_chal) { 623b808588a3a5febe931896b3779d159ba90d836f7Bruno Cardoso Lopes wpa_printf(MSG_INFO, "EAP-SIM: Insufficient number of " 624f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner "challenges (%lu)", (unsigned long) attr->num_chal); 6258ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return eap_sim_client_error(data, id, 626f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner EAP_SIM_INSUFFICIENT_NUM_OF_CHAL); 627203b3e9e2a61be88e8d36a58c5615712e34c6a47Chris Lattner } 628f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (attr->num_chal > 3) { 629203b3e9e2a61be88e8d36a58c5615712e34c6a47Chris Lattner wpa_printf(MSG_INFO, "EAP-SIM: Too many challenges " 630f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner "(%lu)", (unsigned long) attr->num_chal); 631203b3e9e2a61be88e8d36a58c5615712e34c6a47Chris Lattner return eap_sim_client_error(data, id, 632f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 633f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 634f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 6358ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov /* Verify that RANDs are different */ 636f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner if (os_memcmp(attr->rand, attr->rand + GSM_RAND_LEN, 6378ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov GSM_RAND_LEN) == 0 || 638f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner (attr->num_chal > 2 && 639f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner (os_memcmp(attr->rand, attr->rand + 2 * GSM_RAND_LEN, 6408ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov GSM_RAND_LEN) == 0 || 641c7fbe903898ebf322cc375127bca85f4011cb266Chris Lattner os_memcmp(attr->rand + GSM_RAND_LEN, 642c7fbe903898ebf322cc375127bca85f4011cb266Chris Lattner attr->rand + 2 * GSM_RAND_LEN, 643c7fbe903898ebf322cc375127bca85f4011cb266Chris Lattner GSM_RAND_LEN) == 0))) { 644a3839bc3714e6a84222f45cf4c0f1a20a88b10cdChris Lattner wpa_printf(MSG_INFO, "EAP-SIM: Same RAND used multiple times"); 6458ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return eap_sim_client_error(data, id, 646f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner EAP_SIM_RAND_NOT_FRESH); 647f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner } 648f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner 649f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner os_memcpy(data->rand, attr->rand, attr->num_chal * GSM_RAND_LEN); 6508ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov data->num_chal = attr->num_chal; 651f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner 652f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (eap_sim_gsm_auth(sm, data)) { 653f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: GSM authentication failed"); 654f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return eap_sim_client_error(data, id, 65583d77faf6e8fc2c1c2377d037283dc162d8667a1Chris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 656f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 657f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (data->last_eap_identity) { 658a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner identity = data->last_eap_identity; 65983d77faf6e8fc2c1c2377d037283dc162d8667a1Chris Lattner identity_len = data->last_eap_identity_len; 6602a5e23b44ddf1efde1d98bd3379489d93a90d55aRichard Osborne } else if (data->pseudonym) { 661f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner identity = data->pseudonym; 6622a5e23b44ddf1efde1d98bd3379489d93a90d55aRichard Osborne identity_len = data->pseudonym_len; 663f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } else 6642a5e23b44ddf1efde1d98bd3379489d93a90d55aRichard Osborne identity = eap_get_config_identity(sm, &identity_len); 665f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_hexdump_ascii(MSG_DEBUG, "EAP-SIM: Selected identity for MK " 666f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner "derivation", identity, identity_len); 667f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner eap_sim_derive_mk(identity, identity_len, data->nonce_mt, 6688ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov data->selected_version, data->ver_list, 669f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->ver_list_len, data->num_chal, 670f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner (const u8 *) data->kc, data->mk); 671f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut, data->msk, 672f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->emsk); 673f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, data->nonce_mt, 674f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner EAP_SIM_NONCE_MT_LEN)) { 675f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Challenge message " 676f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner "used invalid AT_MAC"); 677f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return eap_sim_client_error(data, id, 6785dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 6795dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner } 6805dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner 6815dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner /* Old reauthentication identity must not be used anymore. In 6825dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner * other words, if no new reauth identity is received, full 6835dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner * authentication will be used on next reauthentication (using 6840c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner * pseudonym identity or permanent identity). */ 6855dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner eap_sim_clear_identities(sm, data, CLEAR_REAUTH_ID | CLEAR_EAP_ID); 6865dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner 6872928c83b010f7cfdb0f819199d806f6942a7d995Daniel Dunbar if (attr->encr_data) { 688ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner u8 *decrypted; 689ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data, 6905dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner attr->encr_data_len, attr->iv, 6915dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner &eattr, 0); 6925dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner if (decrypted == NULL) { 6938ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return eap_sim_client_error( 6945dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner data, id, EAP_SIM_UNABLE_TO_PROCESS_PACKET); 6955dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner } 6965dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner eap_sim_learn_ids(sm, data, &eattr); 6975dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner os_free(decrypted); 6988ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov } 6995dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner 7005dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner if (data->result_ind && attr->result_ind) 70116df208d4eff8414cf4294f9953caabffed1386bDaniel Dunbar data->use_result_ind = 1; 7025dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner 70316df208d4eff8414cf4294f9953caabffed1386bDaniel Dunbar if (data->state != FAILURE && data->state != RESULT_FAILURE) { 7048ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov eap_sim_state(data, data->use_result_ind ? 7055dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner RESULT_SUCCESS : SUCCESS); 70616df208d4eff8414cf4294f9953caabffed1386bDaniel Dunbar } 7075dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner 7085dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner data->num_id_req = 0; 7095dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner data->num_notification = 0; 7105dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner /* RFC 4186 specifies that counter is initialized to one after 7115dc47ff03975b9adde9dd833db2b646eb4295710Chris Lattner * fullauth, but initializing it to zero makes it easier to implement 712fbf1d271e6a7157c1b5432e84d5633f63869b5a8Chris Lattner * reauth verification. */ 713fbf1d271e6a7157c1b5432e84d5633f63869b5a8Chris Lattner data->counter = 0; 71411e9657eeb76dff6baaab1cbac0b1fb7e1abb439Chris Lattner return eap_sim_response_challenge(data, id); 715f26e03bc7e30162197641406e37e662a15d80f7eChris Lattner} 716f26e03bc7e30162197641406e37e662a15d80f7eChris Lattner 71776d5ccf6afd5ae253cf3d5c2cf6acc712643d8cbBenjamin Kramer 71876d5ccf6afd5ae253cf3d5c2cf6acc712643d8cbBenjamin Kramerstatic int eap_sim_process_notification_reauth(struct eap_sim_data *data, 719a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner struct eap_sim_attrs *attr) 7208ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov{ 721ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner struct eap_sim_attrs eattr; 722ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner u8 *decrypted; 723ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 724ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner if (attr->encr_data == NULL || attr->iv == NULL) { 725ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Notification message after " 726ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner "reauth did not include encrypted data"); 7278ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return -1; 728ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner } 729ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 730ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data, 731ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner attr->encr_data_len, attr->iv, &eattr, 732ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 0); 733ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner if (decrypted == NULL) { 734ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Failed to parse encrypted " 735ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner "data from notification message"); 736ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner return -1; 737ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner } 738ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 739ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner if (eattr.counter < 0 || (size_t) eattr.counter != data->counter) { 7408ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_WARNING, "EAP-SIM: Counter in notification " 7414bb253c60f895131371aa2ad1bfa5a2bea213f78Chris Lattner "message does not match with counter in reauth " 7424bb253c60f895131371aa2ad1bfa5a2bea213f78Chris Lattner "message"); 743ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner os_free(decrypted); 7444bb253c60f895131371aa2ad1bfa5a2bea213f78Chris Lattner return -1; 7454bb253c60f895131371aa2ad1bfa5a2bea213f78Chris Lattner } 746ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 747ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner os_free(decrypted); 7480c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner return 0; 7498ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov} 750ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 751ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 7528ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikovstatic int eap_sim_process_notification_auth(struct eap_sim_data *data, 753ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner const struct wpabuf *reqData, 754ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner struct eap_sim_attrs *attr) 755ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner{ 756ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner if (attr->mac == NULL) { 757ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner wpa_printf(MSG_INFO, "EAP-SIM: no AT_MAC in after_auth " 758ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner "Notification message"); 759ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner return -1; 760ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner } 761ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 762ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, (u8 *) "", 0)) 763ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner { 764aac138e84dee1cb3ffc1035b2a1e4361fe0b4f80Chris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Notification message " 765aac138e84dee1cb3ffc1035b2a1e4361fe0b4f80Chris Lattner "used invalid AT_MAC"); 766aac138e84dee1cb3ffc1035b2a1e4361fe0b4f80Chris Lattner return -1; 767ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner } 768ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 769ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner if (data->reauth && 770ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner eap_sim_process_notification_reauth(data, attr)) { 771ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Invalid notification " 772ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner "message after reauth"); 77380ec2792b2b271eca55743a3cc4c8bca214fa705Chris Lattner return -1; 7748ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov } 775e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner 776e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner return 0; 777e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner} 778e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner 779e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner 780e309cfa0d8945af47dd798357549c815164d53d6Chris Lattnerstatic struct wpabuf * eap_sim_process_notification( 781e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner struct eap_sm *sm, struct eap_sim_data *data, u8 id, 782e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner const struct wpabuf *reqData, struct eap_sim_attrs *attr) 7838ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov{ 78480ec2792b2b271eca55743a3cc4c8bca214fa705Chris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: subtype Notification"); 785ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner if (data->num_notification > 0) { 786ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner wpa_printf(MSG_INFO, "EAP-SIM: too many notification " 787ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner "rounds (only one allowed)"); 788ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner return eap_sim_client_error(data, id, 78980ec2792b2b271eca55743a3cc4c8bca214fa705Chris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 790ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner } 791ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner data->num_notification++; 792ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner if (attr->notification == -1) { 793ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner wpa_printf(MSG_INFO, "EAP-SIM: no AT_NOTIFICATION in " 794ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner "Notification message"); 7958ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return eap_sim_client_error(data, id, 796ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 797ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner } 79880ec2792b2b271eca55743a3cc4c8bca214fa705Chris Lattner 7998ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if ((attr->notification & 0x4000) == 0 && 80018a4c16726db2b8874c7b84d04650dda80746074Chris Lattner eap_sim_process_notification_auth(data, reqData, attr)) { 801fb7634f1c7a804829fc55e3711ba62c8ade818d0Bill Wendling return eap_sim_client_error(data, id, 802fb7634f1c7a804829fc55e3711ba62c8ade818d0Bill Wendling EAP_SIM_UNABLE_TO_PROCESS_PACKET); 80335039ac24163e99cfab161620a9fb41f944a63d5Chris Lattner } 804ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 805ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner eap_sim_report_notification(sm->msg_ctx, attr->notification, 0); 806ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner if (attr->notification >= 0 && attr->notification < 32768) { 807ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner eap_sim_state(data, FAILURE); 808ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner } else if (attr->notification == EAP_SIM_SUCCESS && 809ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner data->state == RESULT_SUCCESS) 81018a4c16726db2b8874c7b84d04650dda80746074Chris Lattner eap_sim_state(data, SUCCESS); 81118a4c16726db2b8874c7b84d04650dda80746074Chris Lattner return eap_sim_response_notification(data, id, attr->notification); 8128ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov} 813ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 8140c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner 8158ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikovstatic struct wpabuf * eap_sim_process_reauthentication( 816ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner struct eap_sm *sm, struct eap_sim_data *data, u8 id, 8170c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner const struct wpabuf *reqData, struct eap_sim_attrs *attr) 8188ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov{ 819ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner struct eap_sim_attrs eattr; 8200c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner u8 *decrypted; 8218ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 822ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: subtype Reauthentication"); 8230c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner 8248ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if (data->reauth_id == NULL) { 825ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Server is trying " 8260c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner "reauthentication, but no reauth_id available"); 8278ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return eap_sim_client_error(data, id, 828ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 8290c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner } 8308ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 831ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner data->reauth = 1; 8320c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, (u8 *) "", 0)) 8338ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov { 834ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Reauthentication " 8350c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner "did not have valid AT_MAC"); 8368ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return eap_sim_client_error(data, id, 837ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 8380c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner } 8398ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 840ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner if (attr->encr_data == NULL || attr->iv == NULL) { 8410c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Reauthentication " 8428ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov "message did not include encrypted data"); 843ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner return eap_sim_client_error(data, id, 8440c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 8458ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov } 846ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 8470c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data, 848f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner attr->encr_data_len, attr->iv, &eattr, 849f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 0); 850a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner if (decrypted == NULL) { 8518ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_WARNING, "EAP-SIM: Failed to parse encrypted " 85224f654c8a4d14066233480f683d3b0dececf374aChris Lattner "data from reauthentication message"); 853ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner return eap_sim_client_error(data, id, 854ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 855ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner } 856ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner 857ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner if (eattr.nonce_s == NULL || eattr.counter < 0) { 858ff4bc460c52c1f285d8a56da173641bf92d49e3fChris Lattner wpa_printf(MSG_INFO, "EAP-SIM: (encr) No%s%s in reauth packet", 859e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner !eattr.nonce_s ? " AT_NONCE_S" : "", 860e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner eattr.counter < 0 ? " AT_COUNTER" : ""); 861e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner os_free(decrypted); 862e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner return eap_sim_client_error(data, id, 863e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 864e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner } 865e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner 866e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner if (eattr.counter < 0 || (size_t) eattr.counter <= data->counter) { 8678ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_INFO, "EAP-SIM: (encr) Invalid counter " 868e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner "(%d <= %d)", eattr.counter, data->counter); 869e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner data->counter_too_small = eattr.counter; 870e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner /* Reply using Re-auth w/ AT_COUNTER_TOO_SMALL. The current 8718ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov * reauth_id must not be used to start a new reauthentication. 872e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner * However, since it was used in the last EAP-Response-Identity 873e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner * packet, it has to saved for the following fullauth to be 874e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner * used in MK derivation. */ 875e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner os_free(data->last_eap_identity); 876e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner data->last_eap_identity = data->reauth_id; 877e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner data->last_eap_identity_len = data->reauth_id_len; 878e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner data->reauth_id = NULL; 879e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner data->reauth_id_len = 0; 880e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner os_free(decrypted); 8818ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return eap_sim_response_reauth(data, id, 1, eattr.nonce_s); 882e309cfa0d8945af47dd798357549c815164d53d6Chris Lattner } 88324f654c8a4d14066233480f683d3b0dececf374aChris Lattner data->counter = eattr.counter; 88424f654c8a4d14066233480f683d3b0dececf374aChris Lattner 88524f654c8a4d14066233480f683d3b0dececf374aChris Lattner os_memcpy(data->nonce_s, eattr.nonce_s, EAP_SIM_NONCE_S_LEN); 886f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner wpa_hexdump(MSG_DEBUG, "EAP-SIM: (encr) AT_NONCE_S", 887e53a600f065075731d0aeb9dc8f4f3d75f5a05f8Chris Lattner data->nonce_s, EAP_SIM_NONCE_S_LEN); 888f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner 8898ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov eap_sim_derive_keys_reauth(data->counter, 890f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner data->reauth_id, data->reauth_id_len, 89127602b82c2a12b9f99c1f7fcbfb4be5ba97dbd7dChris Lattner data->nonce_s, data->mk, data->msk, 8928ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov data->emsk); 893f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner eap_sim_clear_identities(sm, data, CLEAR_REAUTH_ID | CLEAR_EAP_ID); 894f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner eap_sim_learn_ids(sm, data, &eattr); 89527602b82c2a12b9f99c1f7fcbfb4be5ba97dbd7dChris Lattner 896f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner if (data->result_ind && attr->result_ind) 897f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner data->use_result_ind = 1; 898f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 899f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (data->state != FAILURE && data->state != RESULT_FAILURE) { 9008ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov eap_sim_state(data, data->use_result_ind ? 901f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner RESULT_SUCCESS : SUCCESS); 902ec409759e94cc395e4896ba6ade3fa77200c5cfdChris Lattner } 903ec409759e94cc395e4896ba6ade3fa77200c5cfdChris Lattner 904ec409759e94cc395e4896ba6ade3fa77200c5cfdChris Lattner data->num_id_req = 0; 905ec409759e94cc395e4896ba6ade3fa77200c5cfdChris Lattner data->num_notification = 0; 906ec409759e94cc395e4896ba6ade3fa77200c5cfdChris Lattner if (data->counter > EAP_SIM_MAX_FAST_REAUTHS) { 907824583844a8f334dd261894a3fac7ad476531667Chris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: Maximum number of " 908ec409759e94cc395e4896ba6ade3fa77200c5cfdChris Lattner "fast reauths performed - force fullauth"); 909ec409759e94cc395e4896ba6ade3fa77200c5cfdChris Lattner eap_sim_clear_identities(sm, data, 910f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner CLEAR_REAUTH_ID | CLEAR_EAP_ID); 911f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } 9128ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov os_free(decrypted); 913f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner return eap_sim_response_reauth(data, id, 0, data->nonce_s); 914f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner} 915f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 916f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner 917f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattnerstatic struct wpabuf * eap_sim_process(struct eap_sm *sm, void *priv, 918f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner struct eap_method_ret *ret, 919f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner const struct wpabuf *reqData) 920f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner{ 921ec409759e94cc395e4896ba6ade3fa77200c5cfdChris Lattner struct eap_sim_data *data = priv; 922ec409759e94cc395e4896ba6ade3fa77200c5cfdChris Lattner const struct eap_hdr *req; 923ec409759e94cc395e4896ba6ade3fa77200c5cfdChris Lattner u8 subtype, id; 924f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner struct wpabuf *res; 925f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner const u8 *pos; 926f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner struct eap_sim_attrs attr; 927f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner size_t len; 928f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 929f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner wpa_hexdump_buf(MSG_DEBUG, "EAP-SIM: EAP data", reqData); 930f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (eap_get_config_identity(sm, &len) == NULL) { 9318ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov wpa_printf(MSG_INFO, "EAP-SIM: Identity not configured"); 932aac138e84dee1cb3ffc1035b2a1e4361fe0b4f80Chris Lattner eap_sm_request_identity(sm); 933aac138e84dee1cb3ffc1035b2a1e4361fe0b4f80Chris Lattner ret->ignore = TRUE; 934ce8749e445fdd0493758932874bad50293647df9Chris Lattner return NULL; 935aac138e84dee1cb3ffc1035b2a1e4361fe0b4f80Chris Lattner } 936aac138e84dee1cb3ffc1035b2a1e4361fe0b4f80Chris Lattner 937f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_SIM, reqData, &len); 938f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (pos == NULL || len < 1) { 939f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner ret->ignore = TRUE; 940f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return NULL; 941a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner } 94283d77faf6e8fc2c1c2377d037283dc162d8667a1Chris Lattner req = wpabuf_head(reqData); 943f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner id = req->identifier; 944f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner len = be_to_host16(req->length); 945a07b7504050e10508144b294b2c7996fe8794e0cEric Christopher 946f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner ret->ignore = FALSE; 9478ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov ret->methodState = METHOD_MAY_CONT; 948f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner ret->decision = DECISION_FAIL; 949f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner ret->allowNotifications = TRUE; 950f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 951f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner subtype = *pos++; 9524bb253c60f895131371aa2ad1bfa5a2bea213f78Chris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: Subtype=%d", subtype); 953f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner pos += 2; /* Reserved */ 954f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 955f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (eap_sim_parse_attr(pos, wpabuf_head_u8(reqData) + len, &attr, 0, 956f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 0)) { 95726630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner res = eap_sim_client_error(data, id, 95826630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 95926630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner goto done; 96026630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner } 96126630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner 96226630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner switch (subtype) { 96326630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner case EAP_SIM_SUBTYPE_START: 96426630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner res = eap_sim_process_start(sm, data, id, &attr); 9658ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov break; 96626630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner case EAP_SIM_SUBTYPE_CHALLENGE: 96726630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner res = eap_sim_process_challenge(sm, data, id, reqData, &attr); 96826630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner break; 96926630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner case EAP_SIM_SUBTYPE_NOTIFICATION: 97026630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner res = eap_sim_process_notification(sm, data, id, reqData, 9710b3735e65af1cc3ff7fb76e2b30e2ffb2604f400Chris Lattner &attr); 972036d8f9581c76b68cac08876be65b362c3a54bc3Chris Lattner break; 97326630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner case EAP_SIM_SUBTYPE_REAUTHENTICATION: 97426630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner res = eap_sim_process_reauthentication(sm, data, id, reqData, 97526630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner &attr); 9768ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov break; 97726630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner case EAP_SIM_SUBTYPE_CLIENT_ERROR: 97826630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: subtype Client-Error"); 97926630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner res = eap_sim_client_error(data, id, 9808c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 9818c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner break; 9828609c7c931c0213d6d29f665df2110cf3c709e4cChris Lattner default: 9838c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner wpa_printf(MSG_DEBUG, "EAP-SIM: Unknown subtype=%d", subtype); 9848c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner res = eap_sim_client_error(data, id, 9858c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner EAP_SIM_UNABLE_TO_PROCESS_PACKET); 9868c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner break; 9878c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner } 9888c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner 9898c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattnerdone: 9908c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner if (data->state == FAILURE) { 9918c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner ret->decision = DECISION_FAIL; 9928c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner ret->methodState = METHOD_DONE; 9938c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner } else if (data->state == SUCCESS) { 99426630c1180502d07c9b2b4a9a4ba06bc5ddf180bChris Lattner ret->decision = data->use_result_ind ? 995f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner DECISION_UNCOND_SUCC : DECISION_COND_SUCC; 996f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner ret->methodState = data->use_result_ind ? 997f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner METHOD_DONE : METHOD_MAY_CONT; 998f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner } else if (data->state == RESULT_FAILURE) 99938cff389af1d78bd80df0479ef258493e0c5897eChris Lattner ret->methodState = METHOD_CONT; 100038cff389af1d78bd80df0479ef258493e0c5897eChris Lattner else if (data->state == RESULT_SUCCESS) 100138cff389af1d78bd80df0479ef258493e0c5897eChris Lattner ret->methodState = METHOD_CONT; 100238cff389af1d78bd80df0479ef258493e0c5897eChris Lattner 100338cff389af1d78bd80df0479ef258493e0c5897eChris Lattner if (ret->methodState == METHOD_DONE) { 100438cff389af1d78bd80df0479ef258493e0c5897eChris Lattner ret->allowNotifications = FALSE; 10050c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner } 100611e9657eeb76dff6baaab1cbac0b1fb7e1abb439Chris Lattner 10074813035b726e7f0a3fd17bec437185fc72a50988Chris Lattner return res; 100838cff389af1d78bd80df0479ef258493e0c5897eChris Lattner} 100938cff389af1d78bd80df0479ef258493e0c5897eChris Lattner 101038cff389af1d78bd80df0479ef258493e0c5897eChris Lattner 101138cff389af1d78bd80df0479ef258493e0c5897eChris Lattnerstatic Boolean eap_sim_has_reauth_data(struct eap_sm *sm, void *priv) 10128ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov{ 101338cff389af1d78bd80df0479ef258493e0c5897eChris Lattner struct eap_sim_data *data = priv; 101438cff389af1d78bd80df0479ef258493e0c5897eChris Lattner return data->pseudonym || data->reauth_id; 101538cff389af1d78bd80df0479ef258493e0c5897eChris Lattner} 10168ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 101738cff389af1d78bd80df0479ef258493e0c5897eChris Lattner 1018fbf1d271e6a7157c1b5432e84d5633f63869b5a8Chris Lattnerstatic void eap_sim_deinit_for_reauth(struct eap_sm *sm, void *priv) 1019fbf1d271e6a7157c1b5432e84d5633f63869b5a8Chris Lattner{ 1020f26e03bc7e30162197641406e37e662a15d80f7eChris Lattner struct eap_sim_data *data = priv; 1021f26e03bc7e30162197641406e37e662a15d80f7eChris Lattner eap_sim_clear_identities(sm, data, CLEAR_EAP_ID); 102276d5ccf6afd5ae253cf3d5c2cf6acc712643d8cbBenjamin Kramer data->use_result_ind = 0; 102376d5ccf6afd5ae253cf3d5c2cf6acc712643d8cbBenjamin Kramer} 1024a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner 10250c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner 10260c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattnerstatic void * eap_sim_init_for_reauth(struct eap_sm *sm, void *priv) 102780ec2792b2b271eca55743a3cc4c8bca214fa705Chris Lattner{ 10280c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner struct eap_sim_data *data = priv; 102980ec2792b2b271eca55743a3cc4c8bca214fa705Chris Lattner if (random_get_bytes(data->nonce_mt, EAP_SIM_NONCE_MT_LEN)) { 10300c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner wpa_printf(MSG_WARNING, "EAP-SIM: Failed to get random data " 10318ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov "for NONCE_MT"); 103235c3531754c392a533921a465a22f67f7e8fb743Chris Lattner os_free(data); 103335c3531754c392a533921a465a22f67f7e8fb743Chris Lattner return NULL; 103435c3531754c392a533921a465a22f67f7e8fb743Chris Lattner } 103535c3531754c392a533921a465a22f67f7e8fb743Chris Lattner data->num_id_req = 0; 103635c3531754c392a533921a465a22f67f7e8fb743Chris Lattner data->num_notification = 0; 103735c3531754c392a533921a465a22f67f7e8fb743Chris Lattner eap_sim_state(data, CONTINUE); 103835c3531754c392a533921a465a22f67f7e8fb743Chris Lattner return priv; 103935c3531754c392a533921a465a22f67f7e8fb743Chris Lattner} 10408ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 104118a4c16726db2b8874c7b84d04650dda80746074Chris Lattner 104218a4c16726db2b8874c7b84d04650dda80746074Chris Lattnerstatic const u8 * eap_sim_get_identity(struct eap_sm *sm, void *priv, 10438ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov size_t *len) 10440c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner{ 10450c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner struct eap_sim_data *data = priv; 10468ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 10470c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner if (data->reauth_id) { 10480c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner *len = data->reauth_id_len; 10498ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return data->reauth_id; 10500c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner } 10510c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner 10528ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if (data->pseudonym) { 10530c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner *len = data->pseudonym_len; 10540c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner return data->pseudonym; 105518a4c16726db2b8874c7b84d04650dda80746074Chris Lattner } 10560c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner 10570c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner return NULL; 105818a4c16726db2b8874c7b84d04650dda80746074Chris Lattner} 10590c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner 10600c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner 10618ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikovstatic Boolean eap_sim_isKeyAvailable(struct eap_sm *sm, void *priv) 10620c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner{ 10630c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner struct eap_sim_data *data = priv; 10648ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return data->state == SUCCESS; 10650c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner} 10660c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner 10678ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 10680c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattnerstatic u8 * eap_sim_getKey(struct eap_sm *sm, void *priv, size_t *len) 10690c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner{ 10708ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov struct eap_sim_data *data = priv; 10710c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner u8 *key; 10720c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner 10738ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if (data->state != SUCCESS) 10740c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner return NULL; 10750c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner 1076f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner key = os_malloc(EAP_SIM_KEYING_DATA_LEN); 1077f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (key == NULL) 107824f654c8a4d14066233480f683d3b0dececf374aChris Lattner return NULL; 10798ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 108024f654c8a4d14066233480f683d3b0dececf374aChris Lattner *len = EAP_SIM_KEYING_DATA_LEN; 10810c0cb7123346beab4e0d3ad6ce9570560b14971eChris Lattner os_memcpy(key, data->msk, EAP_SIM_KEYING_DATA_LEN); 108224f654c8a4d14066233480f683d3b0dececf374aChris Lattner 108324f654c8a4d14066233480f683d3b0dececf374aChris Lattner return key; 1084f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner} 1085f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 1086f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 1087f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattnerstatic u8 * eap_sim_get_session_id(struct eap_sm *sm, void *priv, size_t *len) 1088f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner{ 1089f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner struct eap_sim_data *data = priv; 1090f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner u8 *id; 1091f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 1092f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner if (data->state != SUCCESS) 1093a87dea4f8c546ca748f1777a8d1cabcc06515d91Chris Lattner return NULL; 1094f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner 1095e53a600f065075731d0aeb9dc8f4f3d75f5a05f8Chris Lattner *len = 1 + data->num_chal * GSM_RAND_LEN + EAP_SIM_NONCE_MT_LEN; 1096f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner id = os_malloc(*len); 10978ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov if (id == NULL) 1098f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner return NULL; 1099f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 110027602b82c2a12b9f99c1f7fcbfb4be5ba97dbd7dChris Lattner id[0] = EAP_TYPE_SIM; 1101f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner os_memcpy(id + 1, data->rand, data->num_chal * GSM_RAND_LEN); 11024813035b726e7f0a3fd17bec437185fc72a50988Chris Lattner os_memcpy(id + 1 + data->num_chal * GSM_RAND_LEN, data->nonce_mt, 1103cab16cc9a34b8a18e9f91c99085b2f0a1d287e12Chris Lattner EAP_SIM_NONCE_MT_LEN); 11044813035b726e7f0a3fd17bec437185fc72a50988Chris Lattner wpa_hexdump(MSG_DEBUG, "EAP-SIM: Derived Session-Id", id, *len); 1105f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 11068ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov return id; 1107f9650c061ee89ac55740555530ca5c2842c28738Chris Lattner} 1108f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner 11098ddb569d8a1831f0e061e2f490d61bccd4166ec4Anton Korobeynikov 1110f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattnerstatic u8 * eap_sim_get_emsk(struct eap_sm *sm, void *priv, size_t *len) 1111f0144127b98425d214e59e4a1a4b342b78e3642bChris Lattner{ 11128c6ed05157e9c97ff8f3ccb211dd797e53228da1Chris Lattner struct eap_sim_data *data = priv; 1113 u8 *key; 1114 1115 if (data->state != SUCCESS) 1116 return NULL; 1117 1118 key = os_malloc(EAP_EMSK_LEN); 1119 if (key == NULL) 1120 return NULL; 1121 1122 *len = EAP_EMSK_LEN; 1123 os_memcpy(key, data->emsk, EAP_EMSK_LEN); 1124 1125 return key; 1126} 1127 1128 1129int eap_peer_sim_register(void) 1130{ 1131 struct eap_method *eap; 1132 int ret; 1133 1134 eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION, 1135 EAP_VENDOR_IETF, EAP_TYPE_SIM, "SIM"); 1136 if (eap == NULL) 1137 return -1; 1138 1139 eap->init = eap_sim_init; 1140 eap->deinit = eap_sim_deinit; 1141 eap->process = eap_sim_process; 1142 eap->isKeyAvailable = eap_sim_isKeyAvailable; 1143 eap->getKey = eap_sim_getKey; 1144 eap->getSessionId = eap_sim_get_session_id; 1145 eap->has_reauth_data = eap_sim_has_reauth_data; 1146 eap->deinit_for_reauth = eap_sim_deinit_for_reauth; 1147 eap->init_for_reauth = eap_sim_init_for_reauth; 1148 eap->get_identity = eap_sim_get_identity; 1149 eap->get_emsk = eap_sim_get_emsk; 1150 1151 ret = eap_peer_method_register(eap); 1152 if (ret) 1153 eap_peer_method_free(eap); 1154 return ret; 1155} 1156