18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * EAP peer method: EAP-SIM (RFC 4186) 34530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt * Copyright (c) 2004-2012, Jouni Malinen <j@w1.fi> 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * This software may be distributed under the terms of the BSD license. 6c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * See README for more details. 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "pcsc_funcs.h" 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/milenage.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/random.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_peer/eap_i.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_config.h" 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_common/eap_sim_common.h" 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct eap_sim_data { 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *ver_list; 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t ver_list_len; 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int selected_version; 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t min_num_chal, num_chal; 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 kc[3][EAP_SIM_KC_LEN]; 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 sres[3][EAP_SIM_SRES_LEN]; 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 nonce_mt[EAP_SIM_NONCE_MT_LEN], nonce_s[EAP_SIM_NONCE_S_LEN]; 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mk[EAP_SIM_MK_LEN]; 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 k_aut[EAP_SIM_K_AUT_LEN]; 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 k_encr[EAP_SIM_K_ENCR_LEN]; 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 msk[EAP_SIM_KEYING_DATA_LEN]; 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 emsk[EAP_EMSK_LEN]; 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 rand[3][GSM_RAND_LEN]; 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int num_id_req, num_notification; 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pseudonym; 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t pseudonym_len; 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *reauth_id; 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t reauth_id_len; 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int reauth; 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt unsigned int counter, counter_too_small; 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *last_eap_identity; 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t last_eap_identity_len; 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum { 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt CONTINUE, RESULT_SUCCESS, RESULT_FAILURE, SUCCESS, FAILURE 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } state; 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int result_ind, use_result_ind; 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifndef CONFIG_NO_STDOUT_DEBUG 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic const char * eap_sim_state_txt(int state) 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (state) { 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case CONTINUE: 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "CONTINUE"; 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RESULT_SUCCESS: 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "RESULT_SUCCESS"; 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RESULT_FAILURE: 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "RESULT_FAILURE"; 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SUCCESS: 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "SUCCESS"; 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case FAILURE: 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "FAILURE"; 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "?"; 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_NO_STDOUT_DEBUG */ 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_sim_state(struct eap_sim_data *data, int state) 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: %s -> %s", 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_state_txt(data->state), 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_state_txt(state)); 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->state = state; 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void * eap_sim_init(struct eap_sm *sm) 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data; 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peer_config *config = eap_get_config(sm); 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data = os_zalloc(sizeof(*data)); 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data == NULL) 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (random_get_bytes(data->nonce_mt, EAP_SIM_NONCE_MT_LEN)) { 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Failed to get random data " 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "for NONCE_MT"); 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data); 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->min_num_chal = 2; 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (config && config->phase1) { 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt char *pos = os_strstr(config->phase1, "sim_min_num_chal="); 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos) { 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->min_num_chal = atoi(pos + 17); 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->min_num_chal < 2 || data->min_num_chal > 3) { 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Invalid " 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "sim_min_num_chal configuration " 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(%lu, expected 2 or 3)", 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) data->min_num_chal); 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data); 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: Set minimum number of " 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "challenges to %lu", 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) data->min_num_chal); 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->result_ind = os_strstr(config->phase1, "result_ind=1") != 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt NULL; 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1204530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (config && config->anonymous_identity) { 1214530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt data->pseudonym = os_malloc(config->anonymous_identity_len); 1224530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (data->pseudonym) { 1234530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt os_memcpy(data->pseudonym, config->anonymous_identity, 1244530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt config->anonymous_identity_len); 1254530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt data->pseudonym_len = config->anonymous_identity_len; 1264530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt } 1274530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt } 1284530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_state(data, CONTINUE); 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data; 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_sim_deinit(struct eap_sm *sm, void *priv) 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data = priv; 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data) { 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->ver_list); 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->pseudonym); 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->reauth_id); 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->last_eap_identity); 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data); 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_sim_gsm_auth(struct eap_sm *sm, struct eap_sim_data *data) 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peer_config *conf; 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: GSM authentication algorithm"); 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt conf = eap_get_config(sm); 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf == NULL) 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf->pcsc) { 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (scard_gsm_auth(sm->scard_ctx, data->rand[0], 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->sres[0], data->kc[0]) || 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt scard_gsm_auth(sm->scard_ctx, data->rand[1], 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->sres[1], data->kc[1]) || 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (data->num_chal > 2 && 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt scard_gsm_auth(sm->scard_ctx, data->rand[2], 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->sres[2], data->kc[2]))) { 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: GSM SIM " 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "authentication could not be completed"); 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_SIM_SIMULATOR 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf->password) { 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 opc[16], k[16]; 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const char *pos; 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: Use internal GSM-Milenage " 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "implementation for authentication"); 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf->password_len < 65) { 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: invalid GSM-Milenage " 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "password"); 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (const char *) conf->password; 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (hexstr2bin(pos, k, 16)) 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 32; 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*pos != ':') 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos++; 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (hexstr2bin(pos, opc, 16)) 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < data->num_chal; i++) { 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (gsm_milenage(opc, k, data->rand[i], 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->sres[i], data->kc[i])) { 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: " 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GSM-Milenage authentication " 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "could not be completed"); 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-SIM: RAND", 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->rand[i], GSM_RAND_LEN); 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: SRES", 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->sres[i], EAP_SIM_SRES_LEN); 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: Kc", 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->kc[i], EAP_SIM_KC_LEN); 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_SIM_SIMULATOR */ 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_SIM_HARDCODED 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* These hardcoded Kc and SRES values are used for testing. RAND to 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * KC/SREC mapping is very bogus as far as real authentication is 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * concerned, but it is quite useful for cases where the AS is rotating 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * the order of pre-configured values. */ 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: Use hardcoded Kc and SRES " 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "values for testing"); 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < data->num_chal; i++) { 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->rand[i][0] == 0xaa) { 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->kc[i], 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7", 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_KC_LEN); 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->sres[i], "\xd1\xd2\xd3\xd4", 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_SRES_LEN); 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (data->rand[i][0] == 0xbb) { 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->kc[i], 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7", 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_KC_LEN); 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->sres[i], "\xe1\xe2\xe3\xe4", 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_SRES_LEN); 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->kc[i], 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7", 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_KC_LEN); 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->sres[i], "\xf1\xf2\xf3\xf4", 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_SRES_LEN); 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#else /* CONFIG_SIM_HARDCODED */ 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: No GSM authentication algorithm " 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "enabled"); 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_SIM_HARDCODED */ 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_sim_supported_ver(int version) 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return version == EAP_SIM_VERSION; 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define CLEAR_PSEUDONYM 0x01 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define CLEAR_REAUTH_ID 0x02 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define CLEAR_EAP_ID 0x04 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2704530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidtstatic void eap_sim_clear_identities(struct eap_sm *sm, 2714530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt struct eap_sim_data *data, int id) 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2731f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if ((id & CLEAR_PSEUDONYM) && data->pseudonym) { 2741f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: forgetting old pseudonym"); 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->pseudonym); 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym = NULL; 2778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym_len = 0; 2784530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_set_anon_id(sm, NULL, 0); 2798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2801f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if ((id & CLEAR_REAUTH_ID) && data->reauth_id) { 2811f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: forgetting old reauth_id"); 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->reauth_id); 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id = NULL; 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len = 0; 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2861f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if ((id & CLEAR_EAP_ID) && data->last_eap_identity) { 2871f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: forgetting old eap_id"); 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->last_eap_identity); 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity = NULL; 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity_len = 0; 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 295c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidtstatic int eap_sim_learn_ids(struct eap_sm *sm, struct eap_sim_data *data, 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->next_pseudonym) { 299c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt const u8 *identity = NULL; 300c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt size_t identity_len = 0; 301c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt const u8 *realm = NULL; 302c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt size_t realm_len = 0; 303c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt 304c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, 305c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt "EAP-SIM: (encr) AT_NEXT_PSEUDONYM", 306c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt attr->next_pseudonym, 307c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt attr->next_pseudonym_len); 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->pseudonym); 309c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt /* Look for the realm of the permanent identity */ 310c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt identity = eap_get_config_identity(sm, &identity_len); 311c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (identity) { 312c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt for (realm = identity, realm_len = identity_len; 313c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt realm_len > 0; realm_len--, realm++) { 314c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (*realm == '@') 315c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt break; 316c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt } 317c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt } 318c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt data->pseudonym = os_malloc(attr->next_pseudonym_len + 319c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt realm_len); 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->pseudonym == NULL) { 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: (encr) No memory for " 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "next pseudonym"); 323c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt data->pseudonym_len = 0; 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->pseudonym, attr->next_pseudonym, 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->next_pseudonym_len); 328c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (realm_len) { 329c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt os_memcpy(data->pseudonym + attr->next_pseudonym_len, 330c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt realm, realm_len); 331c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt } 332c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt data->pseudonym_len = attr->next_pseudonym_len + realm_len; 3334530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_set_anon_id(sm, data->pseudonym, data->pseudonym_len); 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->next_reauth_id) { 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->reauth_id); 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id = os_malloc(attr->next_reauth_id_len); 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth_id == NULL) { 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: (encr) No memory for " 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "next reauth_id"); 342c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt data->reauth_id_len = 0; 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->reauth_id, attr->next_reauth_id, 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->next_reauth_id_len); 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len = attr->next_reauth_id_len; 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP-SIM: (encr) AT_NEXT_REAUTH_ID", 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id, 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len); 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_sim_client_error(struct eap_sim_data *data, u8 id, 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int err) 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_state(data, FAILURE); 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3674530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: Send Client-Error (error code %d)", 3684530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt err); 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_SIM, 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_SUBTYPE_CLIENT_ERROR); 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_CLIENT_ERROR_CODE, err, NULL, 0); 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_sim_response_start(struct eap_sm *sm, 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data, u8 id, 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum eap_sim_id_req id_req) 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *identity = NULL; 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t identity_len = 0; 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 0; 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id_req == ANY_ID && data->reauth_id) { 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->reauth_id; 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->reauth_id_len; 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 1; 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if ((id_req == ANY_ID || id_req == FULLAUTH_ID) && 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym) { 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->pseudonym; 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->pseudonym_len; 3934530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_sim_clear_identities(sm, data, CLEAR_REAUTH_ID); 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (id_req != NO_ID_REQ) { 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = eap_get_config_identity(sm, &identity_len); 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (identity) { 3974530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_sim_clear_identities(sm, data, CLEAR_PSEUDONYM | 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt CLEAR_REAUTH_ID); 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id_req != NO_ID_REQ) 4024530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_sim_clear_identities(sm, data, CLEAR_EAP_ID); 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-SIM Start (id=%d)", id); 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_TYPE_SIM, EAP_SIM_SUBTYPE_START); 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!data->reauth) { 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, " AT_NONCE_MT", 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->nonce_mt, EAP_SIM_NONCE_MT_LEN); 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_NONCE_MT, 0, 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->nonce_mt, EAP_SIM_NONCE_MT_LEN); 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_SELECTED_VERSION %d", 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->selected_version); 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_SELECTED_VERSION, 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->selected_version, NULL, 0); 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (identity) { 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, " AT_IDENTITY", 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity, identity_len); 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_IDENTITY, identity_len, 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity, identity_len); 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_sim_response_challenge(struct eap_sim_data *data, 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id) 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-SIM Challenge (id=%d)", id); 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_SIM, 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_SUBTYPE_CHALLENGE); 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->use_result_ind) { 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_RESULT_IND"); 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_RESULT_IND, 0, NULL, 0); 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_MAC"); 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, data->k_aut, (u8 *) data->sres, 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_chal * EAP_SIM_SRES_LEN); 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_sim_response_reauth(struct eap_sim_data *data, 4494530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt u8 id, int counter_too_small, 4504530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt const u8 *nonce_s) 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt unsigned int counter; 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-SIM Reauthentication (id=%d)", 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id); 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_SIM, 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_SUBTYPE_REAUTHENTICATION); 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_IV"); 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_ENCR_DATA"); 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_encr_start(msg, EAP_SIM_AT_IV, EAP_SIM_AT_ENCR_DATA); 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (counter_too_small) { 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " *AT_COUNTER_TOO_SMALL"); 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER_TOO_SMALL, 0, NULL, 0); 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt counter = data->counter_too_small; 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt counter = data->counter; 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " *AT_COUNTER %d", counter); 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER, counter, NULL, 0); 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_msg_add_encr_end(msg, data->k_encr, EAP_SIM_AT_PADDING)) { 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Failed to encrypt " 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AT_ENCR_DATA"); 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_free(msg); 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->use_result_ind) { 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_RESULT_IND"); 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_RESULT_IND, 0, NULL, 0); 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_MAC"); 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 4854530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt return eap_sim_msg_finish(msg, data->k_aut, nonce_s, 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_NONCE_S_LEN); 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_sim_response_notification(struct eap_sim_data *data, 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, u16 notification) 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *k_aut = (notification & 0x4000) == 0 ? data->k_aut : NULL; 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-SIM Notification (id=%d)", id); 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_TYPE_SIM, EAP_SIM_SUBTYPE_NOTIFICATION); 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (k_aut && data->reauth) { 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_IV"); 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_ENCR_DATA"); 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_encr_start(msg, EAP_SIM_AT_IV, 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_AT_ENCR_DATA); 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " *AT_COUNTER %d", data->counter); 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER, data->counter, 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt NULL, 0); 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_msg_add_encr_end(msg, data->k_encr, 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_AT_PADDING)) { 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Failed to encrypt " 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AT_ENCR_DATA"); 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_free(msg); 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (k_aut) { 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_MAC"); 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, k_aut, (u8 *) "", 0); 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_sim_process_start(struct eap_sm *sm, 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data, u8 id, 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int selected_version = -1, id_error; 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos; 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: subtype Start"); 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->version_list == NULL) { 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: No AT_VERSION_LIST in " 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "SIM/Start"); 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNSUPPORTED_VERSION); 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->ver_list); 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->ver_list = os_malloc(attr->version_list_len); 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->ver_list == NULL) { 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: Failed to allocate " 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "memory for version list"); 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->ver_list, attr->version_list, attr->version_list_len); 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->ver_list_len = attr->version_list_len; 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = data->ver_list; 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < data->ver_list_len / 2; i++) { 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ver = pos[0] * 256 + pos[1]; 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_supported_ver(ver)) { 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt selected_version = ver; 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (selected_version < 0) { 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: Could not find a supported " 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "version"); 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNSUPPORTED_VERSION); 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: Selected Version %d", 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt selected_version); 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->selected_version = selected_version; 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error = 0; 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (attr->id_req) { 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case NO_ID_REQ: 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case ANY_ID: 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_id_req > 0) 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error++; 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req++; 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case FULLAUTH_ID: 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_id_req > 1) 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error++; 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req++; 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case PERMANENT_ID: 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_id_req > 2) 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error++; 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req++; 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id_error) { 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: Too many ID requests " 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used within one authentication"); 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_response_start(sm, data, id, attr->id_req); 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_sim_process_challenge(struct eap_sm *sm, 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data, 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *identity; 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t identity_len; 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs eattr; 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: subtype Challenge"); 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 0; 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!attr->mac || !attr->rand) { 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Challenge message " 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "did not include%s%s", 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !attr->mac ? " AT_MAC" : "", 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !attr->rand ? " AT_RAND" : ""); 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: %lu challenges", 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) attr->num_chal); 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->num_chal < data->min_num_chal) { 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: Insufficient number of " 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "challenges (%lu)", (unsigned long) attr->num_chal); 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_INSUFFICIENT_NUM_OF_CHAL); 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->num_chal > 3) { 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: Too many challenges " 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(%lu)", (unsigned long) attr->num_chal); 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Verify that RANDs are different */ 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(attr->rand, attr->rand + GSM_RAND_LEN, 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt GSM_RAND_LEN) == 0 || 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (attr->num_chal > 2 && 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (os_memcmp(attr->rand, attr->rand + 2 * GSM_RAND_LEN, 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt GSM_RAND_LEN) == 0 || 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(attr->rand + GSM_RAND_LEN, 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->rand + 2 * GSM_RAND_LEN, 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt GSM_RAND_LEN) == 0))) { 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: Same RAND used multiple times"); 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_RAND_NOT_FRESH); 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->rand, attr->rand, attr->num_chal * GSM_RAND_LEN); 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_chal = attr->num_chal; 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_gsm_auth(sm, data)) { 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: GSM authentication failed"); 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->last_eap_identity) { 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->last_eap_identity; 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->last_eap_identity_len; 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (data->pseudonym) { 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->pseudonym; 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->pseudonym_len; 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = eap_get_config_identity(sm, &identity_len); 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "EAP-SIM: Selected identity for MK " 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "derivation", identity, identity_len); 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_derive_mk(identity, identity_len, data->nonce_mt, 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->selected_version, data->ver_list, 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->ver_list_len, data->num_chal, 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (const u8 *) data->kc, data->mk); 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut, data->msk, 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->emsk); 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, data->nonce_mt, 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_NONCE_MT_LEN)) { 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Challenge message " 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used invalid AT_MAC"); 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6811f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* Old reauthentication identity must not be used anymore. In 6821f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * other words, if no new reauth identity is received, full 6831f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * authentication will be used on next reauthentication (using 6841f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * pseudonym identity or permanent identity). */ 6854530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_sim_clear_identities(sm, data, CLEAR_REAUTH_ID | CLEAR_EAP_ID); 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->encr_data) { 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *decrypted; 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data, 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_data_len, attr->iv, 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &eattr, 0); 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error( 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data, id, EAP_SIM_UNABLE_TO_PROCESS_PACKET); 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 696c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt eap_sim_learn_ids(sm, data, &eattr); 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->result_ind && attr->result_ind) 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->use_result_ind = 1; 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != FAILURE && data->state != RESULT_FAILURE) { 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_state(data, data->use_result_ind ? 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RESULT_SUCCESS : SUCCESS); 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* RFC 4186 specifies that counter is initialized to one after 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * fullauth, but initializing it to zero makes it easier to implement 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reauth verification. */ 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->counter = 0; 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_response_challenge(data, id); 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_sim_process_notification_reauth(struct eap_sim_data *data, 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs eattr; 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *decrypted; 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->encr_data == NULL || attr->iv == NULL) { 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Notification message after " 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "reauth did not include encrypted data"); 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data, 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_data_len, attr->iv, &eattr, 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0); 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Failed to parse encrypted " 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "data from notification message"); 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eattr.counter < 0 || (size_t) eattr.counter != data->counter) { 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Counter in notification " 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message does not match with counter in reauth " 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message"); 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_sim_process_notification_auth(struct eap_sim_data *data, 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->mac == NULL) { 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: no AT_MAC in after_auth " 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Notification message"); 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, (u8 *) "", 0)) 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Notification message " 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used invalid AT_MAC"); 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth && 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_process_notification_reauth(data, attr)) { 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Invalid notification " 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message after reauth"); 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_sim_process_notification( 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sm *sm, struct eap_sim_data *data, u8 id, 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, struct eap_sim_attrs *attr) 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: subtype Notification"); 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_notification > 0) { 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: too many notification " 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "rounds (only one allowed)"); 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification++; 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->notification == -1) { 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: no AT_NOTIFICATION in " 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Notification message"); 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((attr->notification & 0x4000) == 0 && 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_process_notification_auth(data, reqData, attr)) { 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_report_notification(sm->msg_ctx, attr->notification, 0); 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->notification >= 0 && attr->notification < 32768) { 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_state(data, FAILURE); 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (attr->notification == EAP_SIM_SUCCESS && 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->state == RESULT_SUCCESS) 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_state(data, SUCCESS); 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_response_notification(data, id, attr->notification); 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_sim_process_reauthentication( 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sm *sm, struct eap_sim_data *data, u8 id, 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, struct eap_sim_attrs *attr) 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs eattr; 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *decrypted; 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: subtype Reauthentication"); 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth_id == NULL) { 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Server is trying " 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "reauthentication, but no reauth_id available"); 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 1; 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, (u8 *) "", 0)) 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Reauthentication " 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "did not have valid AT_MAC"); 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->encr_data == NULL || attr->iv == NULL) { 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Reauthentication " 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message did not include encrypted data"); 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data, 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_data_len, attr->iv, &eattr, 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0); 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Failed to parse encrypted " 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "data from reauthentication message"); 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eattr.nonce_s == NULL || eattr.counter < 0) { 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: (encr) No%s%s in reauth packet", 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !eattr.nonce_s ? " AT_NONCE_S" : "", 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eattr.counter < 0 ? " AT_COUNTER" : ""); 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_client_error(data, id, 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eattr.counter < 0 || (size_t) eattr.counter <= data->counter) { 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: (encr) Invalid counter " 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(%d <= %d)", eattr.counter, data->counter); 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->counter_too_small = eattr.counter; 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Reply using Re-auth w/ AT_COUNTER_TOO_SMALL. The current 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reauth_id must not be used to start a new reauthentication. 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * However, since it was used in the last EAP-Response-Identity 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * packet, it has to saved for the following fullauth to be 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * used in MK derivation. */ 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->last_eap_identity); 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity = data->reauth_id; 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity_len = data->reauth_id_len; 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id = NULL; 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len = 0; 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 8814530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt return eap_sim_response_reauth(data, id, 1, eattr.nonce_s); 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->counter = eattr.counter; 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->nonce_s, eattr.nonce_s, EAP_SIM_NONCE_S_LEN); 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-SIM: (encr) AT_NONCE_S", 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->nonce_s, EAP_SIM_NONCE_S_LEN); 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_derive_keys_reauth(data->counter, 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id, data->reauth_id_len, 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->nonce_s, data->mk, data->msk, 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->emsk); 8934530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_sim_clear_identities(sm, data, CLEAR_REAUTH_ID | CLEAR_EAP_ID); 894c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt eap_sim_learn_ids(sm, data, &eattr); 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->result_ind && attr->result_ind) 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->use_result_ind = 1; 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != FAILURE && data->state != RESULT_FAILURE) { 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_state(data, data->use_result_ind ? 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RESULT_SUCCESS : SUCCESS); 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->counter > EAP_SIM_MAX_FAST_REAUTHS) { 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: Maximum number of " 9088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "fast reauths performed - force fullauth"); 9094530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_sim_clear_identities(sm, data, 9104530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt CLEAR_REAUTH_ID | CLEAR_EAP_ID); 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 9134530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt return eap_sim_response_reauth(data, id, 0, data->nonce_s); 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_sim_process(struct eap_sm *sm, void *priv, 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method_ret *ret, 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData) 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data = priv; 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct eap_hdr *req; 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 subtype, id; 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *res; 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs attr; 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len; 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_buf(MSG_DEBUG, "EAP-SIM: EAP data", reqData); 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_get_config_identity(sm, &len) == NULL) { 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-SIM: Identity not configured"); 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sm_request_identity(sm); 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->ignore = TRUE; 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_SIM, reqData, &len); 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos == NULL || len < 1) { 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->ignore = TRUE; 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req = wpabuf_head(reqData); 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id = req->identifier; 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = be_to_host16(req->length); 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->ignore = FALSE; 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_MAY_CONT; 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->allowNotifications = TRUE; 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subtype = *pos++; 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: Subtype=%d", subtype); 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; /* Reserved */ 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_parse_attr(pos, wpabuf_head_u8(reqData) + len, &attr, 0, 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0)) { 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_sim_client_error(data, id, 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto done; 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (subtype) { 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_SIM_SUBTYPE_START: 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_sim_process_start(sm, data, id, &attr); 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_SIM_SUBTYPE_CHALLENGE: 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_sim_process_challenge(sm, data, id, reqData, &attr); 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_SIM_SUBTYPE_NOTIFICATION: 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_sim_process_notification(sm, data, id, reqData, 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &attr); 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_SIM_SUBTYPE_REAUTHENTICATION: 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_sim_process_reauthentication(sm, data, id, reqData, 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &attr); 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_SIM_SUBTYPE_CLIENT_ERROR: 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: subtype Client-Error"); 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_sim_client_error(data, id, 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-SIM: Unknown subtype=%d", subtype); 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_sim_client_error(data, id, 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_UNABLE_TO_PROCESS_PACKET); 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtdone: 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state == FAILURE) { 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_DONE; 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (data->state == SUCCESS) { 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = data->use_result_ind ? 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DECISION_UNCOND_SUCC : DECISION_COND_SUCC; 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = data->use_result_ind ? 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt METHOD_DONE : METHOD_MAY_CONT; 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (data->state == RESULT_FAILURE) 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_CONT; 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (data->state == RESULT_SUCCESS) 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_CONT; 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret->methodState == METHOD_DONE) { 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->allowNotifications = FALSE; 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return res; 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic Boolean eap_sim_has_reauth_data(struct eap_sm *sm, void *priv) 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data = priv; 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->pseudonym || data->reauth_id; 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_sim_deinit_for_reauth(struct eap_sm *sm, void *priv) 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data = priv; 10214530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_sim_clear_identities(sm, data, CLEAR_EAP_ID); 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->use_result_ind = 0; 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void * eap_sim_init_for_reauth(struct eap_sm *sm, void *priv) 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data = priv; 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (random_get_bytes(data->nonce_mt, EAP_SIM_NONCE_MT_LEN)) { 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-SIM: Failed to get random data " 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "for NONCE_MT"); 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data); 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_state(data, CONTINUE); 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return priv; 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic const u8 * eap_sim_get_identity(struct eap_sm *sm, void *priv, 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t *len) 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data = priv; 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth_id) { 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = data->reauth_id_len; 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->reauth_id; 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->pseudonym) { 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = data->pseudonym_len; 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->pseudonym; 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic Boolean eap_sim_isKeyAvailable(struct eap_sm *sm, void *priv) 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data = priv; 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->state == SUCCESS; 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * eap_sim_getKey(struct eap_sm *sm, void *priv, size_t *len) 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data = priv; 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *key; 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != SUCCESS) 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key = os_malloc(EAP_SIM_KEYING_DATA_LEN); 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key == NULL) 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = EAP_SIM_KEYING_DATA_LEN; 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(key, data->msk, EAP_SIM_KEYING_DATA_LEN); 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return key; 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1087f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidtstatic u8 * eap_sim_get_session_id(struct eap_sm *sm, void *priv, size_t *len) 1088f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt{ 1089f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt struct eap_sim_data *data = priv; 1090f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt u8 *id; 1091f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1092f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (data->state != SUCCESS) 1093f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return NULL; 1094f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1095f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt *len = 1 + data->num_chal * GSM_RAND_LEN + EAP_SIM_NONCE_MT_LEN; 1096f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt id = os_malloc(*len); 1097f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (id == NULL) 1098f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return NULL; 1099f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1100f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt id[0] = EAP_TYPE_SIM; 1101f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_memcpy(id + 1, data->rand, data->num_chal * GSM_RAND_LEN); 1102f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_memcpy(id + 1 + data->num_chal * GSM_RAND_LEN, data->nonce_mt, 1103f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt EAP_SIM_NONCE_MT_LEN); 1104f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-SIM: Derived Session-Id", id, *len); 1105f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1106f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return id; 1107f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt} 1108f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1109f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * eap_sim_get_emsk(struct eap_sm *sm, void *priv, size_t *len) 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_data *data = priv; 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *key; 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != SUCCESS) 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key = os_malloc(EAP_EMSK_LEN); 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key == NULL) 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = EAP_EMSK_LEN; 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(key, data->emsk, EAP_EMSK_LEN); 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return key; 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint eap_peer_sim_register(void) 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method *eap; 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION, 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_VENDOR_IETF, EAP_TYPE_SIM, "SIM"); 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap == NULL) 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init = eap_sim_init; 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit = eap_sim_deinit; 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->process = eap_sim_process; 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->isKeyAvailable = eap_sim_isKeyAvailable; 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->getKey = eap_sim_getKey; 1144f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt eap->getSessionId = eap_sim_get_session_id; 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->has_reauth_data = eap_sim_has_reauth_data; 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit_for_reauth = eap_sim_deinit_for_reauth; 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init_for_reauth = eap_sim_init_for_reauth; 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->get_identity = eap_sim_get_identity; 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->get_emsk = eap_sim_get_emsk; 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = eap_peer_method_register(eap); 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret) 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peer_method_free(eap); 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1156