eap_aka.c revision 1f69aa52ea2e0a73ac502565df8c666ee49cab6a
18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * EAP peer method: EAP-AKA (RFC 4187) and EAP-AKA' (draft-arkko-eap-aka-kdf) 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi> 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 58d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This program is free software; you can redistribute it and/or modify 68d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * it under the terms of the GNU General Public License version 2 as 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * published by the Free Software Foundation. 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Alternatively, this software may be distributed under the terms of BSD 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * license. 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * See README and COPYING for more details. 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "pcsc_funcs.h" 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/crypto.h" 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/sha1.h" 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/sha256.h" 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/milenage.h" 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_common/eap_sim_common.h" 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_config.h" 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_i.h" 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct eap_aka_data { 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ik[EAP_AKA_IK_LEN], ck[EAP_AKA_CK_LEN], res[EAP_AKA_RES_MAX_LEN]; 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t res_len; 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 nonce_s[EAP_SIM_NONCE_S_LEN]; 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mk[EAP_SIM_MK_LEN]; 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 k_aut[EAP_AKA_PRIME_K_AUT_LEN]; 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 k_encr[EAP_SIM_K_ENCR_LEN]; 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 k_re[EAP_AKA_PRIME_K_RE_LEN]; /* EAP-AKA' only */ 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 msk[EAP_SIM_KEYING_DATA_LEN]; 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 emsk[EAP_EMSK_LEN]; 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 rand[EAP_AKA_RAND_LEN], autn[EAP_AKA_AUTN_LEN]; 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 auts[EAP_AKA_AUTS_LEN]; 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int num_id_req, num_notification; 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pseudonym; 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t pseudonym_len; 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *reauth_id; 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t reauth_id_len; 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int reauth; 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt unsigned int counter, counter_too_small; 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *last_eap_identity; 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t last_eap_identity_len; 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum { 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt CONTINUE, RESULT_SUCCESS, RESULT_FAILURE, SUCCESS, FAILURE 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } state; 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *id_msgs; 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int prev_id; 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int result_ind, use_result_ind; 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 eap_method; 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *network_name; 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t network_name_len; 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 kdf; 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int kdf_negotiation; 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifndef CONFIG_NO_STDOUT_DEBUG 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic const char * eap_aka_state_txt(int state) 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (state) { 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case CONTINUE: 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "CONTINUE"; 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RESULT_SUCCESS: 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "RESULT_SUCCESS"; 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RESULT_FAILURE: 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "RESULT_FAILURE"; 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SUCCESS: 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "SUCCESS"; 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case FAILURE: 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "FAILURE"; 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "?"; 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_NO_STDOUT_DEBUG */ 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_aka_state(struct eap_aka_data *data, int state) 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: %s -> %s", 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state_txt(data->state), 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state_txt(state)); 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->state = state; 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void * eap_aka_init(struct eap_sm *sm) 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data; 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const char *phase1 = eap_get_config_phase1(sm); 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data = os_zalloc(sizeof(*data)); 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data == NULL) 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->eap_method = EAP_TYPE_AKA; 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, CONTINUE); 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->prev_id = -1; 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->result_ind = phase1 && os_strstr(phase1, "result_ind=1") != NULL; 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data; 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void * eap_aka_prime_init(struct eap_sm *sm) 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = eap_aka_init(sm); 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data == NULL) 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->eap_method = EAP_TYPE_AKA_PRIME; 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data; 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_aka_deinit(struct eap_sm *sm, void *priv) 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data) { 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->pseudonym); 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->reauth_id); 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->last_eap_identity); 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(data->id_msgs); 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->network_name); 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data); 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_umts_auth(struct eap_sm *sm, struct eap_aka_data *data) 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peer_config *conf; 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: UMTS authentication algorithm"); 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt conf = eap_get_config(sm); 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf == NULL) 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf->pcsc) { 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return scard_umts_auth(sm->scard_ctx, data->rand, 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->autn, data->res, &data->res_len, 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->ik, data->ck, data->auts); 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_USIM_SIMULATOR 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf->password) { 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 opc[16], k[16], sqn[6]; 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const char *pos; 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Use internal Milenage " 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "implementation for UMTS authentication"); 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf->password_len < 78) { 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: invalid Milenage " 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "password"); 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (const char *) conf->password; 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (hexstr2bin(pos, k, 16)) 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 32; 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*pos != ':') 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos++; 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (hexstr2bin(pos, opc, 16)) 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 32; 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*pos != ':') 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos++; 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (hexstr2bin(pos, sqn, 6)) 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return milenage_check(opc, k, sqn, data->rand, data->autn, 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->ik, data->ck, 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->res, &data->res_len, data->auts); 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_USIM_SIMULATOR */ 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_USIM_HARDCODED 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Use hardcoded Kc and SRES values for " 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "testing"); 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* These hardcoded Kc and SRES values are used for testing. 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Could consider making them configurable. */ 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(data->res, '2', EAP_AKA_RES_MAX_LEN); 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->res_len = EAP_AKA_RES_MAX_LEN; 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(data->ik, '3', EAP_AKA_IK_LEN); 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(data->ck, '4', EAP_AKA_CK_LEN); 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 autn[EAP_AKA_AUTN_LEN]; 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(autn, '1', EAP_AKA_AUTN_LEN); 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(autn, data->autn, EAP_AKA_AUTN_LEN) != 0) { 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: AUTN did not match " 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "with expected value"); 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#if 0 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt static int test_resync = 1; 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (test_resync) { 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Test Resynchronization */ 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt test_resync = 0; 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -2; 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#else /* CONFIG_USIM_HARDCODED */ 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: No UMTS authentication algorith " 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "enabled"); 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_USIM_HARDCODED */ 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define CLEAR_PSEUDONYM 0x01 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define CLEAR_REAUTH_ID 0x02 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define CLEAR_EAP_ID 0x04 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_aka_clear_identities(struct eap_aka_data *data, int id) 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id & CLEAR_PSEUDONYM) { 2391f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: forgetting old pseudonym"); 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->pseudonym); 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym = NULL; 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym_len = 0; 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id & CLEAR_REAUTH_ID) { 2451f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: forgetting old reauth_id"); 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->reauth_id); 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id = NULL; 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len = 0; 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id & CLEAR_EAP_ID) { 2511f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: forgetting old eap_id"); 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->last_eap_identity); 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity = NULL; 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity_len = 0; 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_learn_ids(struct eap_aka_data *data, 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->next_pseudonym) { 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->pseudonym); 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym = os_malloc(attr->next_pseudonym_len); 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->pseudonym == NULL) { 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: (encr) No memory for " 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "next pseudonym"); 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->pseudonym, attr->next_pseudonym, 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->next_pseudonym_len); 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym_len = attr->next_pseudonym_len; 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP-AKA: (encr) AT_NEXT_PSEUDONYM", 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym, 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym_len); 2778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->next_reauth_id) { 2808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->reauth_id); 2818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id = os_malloc(attr->next_reauth_id_len); 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth_id == NULL) { 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: (encr) No memory for " 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "next reauth_id"); 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->reauth_id, attr->next_reauth_id, 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->next_reauth_id_len); 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len = attr->next_reauth_id_len; 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP-AKA: (encr) AT_NEXT_REAUTH_ID", 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id, 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len); 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_add_id_msg(struct eap_aka_data *data, 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->id_msgs == NULL) { 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->id_msgs = wpabuf_dup(msg); 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->id_msgs == NULL ? -1 : 0; 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpabuf_resize(&data->id_msgs, wpabuf_len(msg)) < 0) 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_buf(data->id_msgs, msg); 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_aka_add_checkcode(struct eap_aka_data *data, 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg) 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr; 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len; 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_CHECKCODE"); 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->id_msgs == NULL) { 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * No EAP-AKA/Identity packets were exchanged - send empty 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * checkcode. 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_CHECKCODE, 0, NULL, 0); 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Checkcode is SHA1/SHA256 hash over all EAP-AKA/Identity packets. */ 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr = wpabuf_head(data->id_msgs); 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = wpabuf_len(data->id_msgs); 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "EAP-AKA: AT_CHECKCODE data", addr, len); 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha256_vector(1, &addr, &len, hash); 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha1_vector(1, &addr, &len, hash); 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_CHECKCODE, 0, hash, 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->eap_method == EAP_TYPE_AKA_PRIME ? 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN); 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_verify_checkcode(struct eap_aka_data *data, 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *checkcode, size_t checkcode_len) 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr; 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len; 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t hash_len; 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (checkcode == NULL) 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->id_msgs == NULL) { 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (checkcode_len != 0) { 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Checkcode from server " 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "indicates that AKA/Identity messages were " 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used, but they were not"); 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hash_len = data->eap_method == EAP_TYPE_AKA_PRIME ? 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN; 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (checkcode_len != hash_len) { 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Checkcode from server " 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "indicates that AKA/Identity message were not " 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used, but they were"); 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Checkcode is SHA1/SHA256 hash over all EAP-AKA/Identity packets. */ 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr = wpabuf_head(data->id_msgs); 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = wpabuf_len(data->id_msgs); 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha256_vector(1, &addr, &len, hash); 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha1_vector(1, &addr, &len, hash); 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(hash, checkcode, hash_len) != 0) { 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Mismatch in AT_CHECKCODE"); 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_client_error(struct eap_aka_data *data, u8 id, 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int err) 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, FAILURE); 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_CLIENT_ERROR); 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_CLIENT_ERROR_CODE, err, NULL, 0); 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_authentication_reject(struct eap_aka_data *data, 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id) 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, FAILURE); 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Authentication-Reject " 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(id=%d)", id); 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_AUTHENTICATION_REJECT); 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_synchronization_failure( 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data, u8 id) 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Synchronization-Failure " 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(id=%d)", id); 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_SYNCHRONIZATION_FAILURE); 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_AUTS"); 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_full(msg, EAP_SIM_AT_AUTS, data->auts, 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_AUTS_LEN); 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_response_identity(struct eap_sm *sm, 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data, 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum eap_sim_id_req id_req) 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *identity = NULL; 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t identity_len = 0; 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 0; 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id_req == ANY_ID && data->reauth_id) { 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->reauth_id; 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->reauth_id_len; 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 1; 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if ((id_req == ANY_ID || id_req == FULLAUTH_ID) && 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym) { 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->pseudonym; 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->pseudonym_len; 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_clear_identities(data, CLEAR_REAUTH_ID); 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (id_req != NO_ID_REQ) { 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = eap_get_config_identity(sm, &identity_len); 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (identity) { 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_clear_identities(data, CLEAR_PSEUDONYM | 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt CLEAR_REAUTH_ID); 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id_req != NO_ID_REQ) 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_clear_identities(data, CLEAR_EAP_ID); 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Identity (id=%d)", id); 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_IDENTITY); 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (identity) { 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, " AT_IDENTITY", 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity, identity_len); 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_IDENTITY, identity_len, 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity, identity_len); 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_response_challenge(struct eap_aka_data *data, 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id) 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Challenge (id=%d)", id); 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_CHALLENGE); 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_RES"); 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_RES, data->res_len * 8, 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->res, data->res_len); 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_add_checkcode(data, msg); 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->use_result_ind) { 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_RESULT_IND"); 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_RESULT_IND, 0, NULL, 0); 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_MAC"); 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, data->k_aut, (u8 *) "", 0); 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_response_reauth(struct eap_aka_data *data, 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, int counter_too_small, 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *nonce_s) 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt unsigned int counter; 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Reauthentication (id=%d)", 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id); 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_REAUTHENTICATION); 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_IV"); 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_ENCR_DATA"); 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_encr_start(msg, EAP_SIM_AT_IV, EAP_SIM_AT_ENCR_DATA); 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (counter_too_small) { 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " *AT_COUNTER_TOO_SMALL"); 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER_TOO_SMALL, 0, NULL, 0); 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt counter = data->counter_too_small; 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt counter = data->counter; 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " *AT_COUNTER %d", counter); 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER, counter, NULL, 0); 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_msg_add_encr_end(msg, data->k_encr, EAP_SIM_AT_PADDING)) { 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Failed to encrypt " 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AT_ENCR_DATA"); 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_free(msg); 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_add_checkcode(data, msg); 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->use_result_ind) { 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_RESULT_IND"); 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_RESULT_IND, 0, NULL, 0); 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_MAC"); 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, data->k_aut, nonce_s, 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_NONCE_S_LEN); 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_response_notification(struct eap_aka_data *data, 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, u16 notification) 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *k_aut = (notification & 0x4000) == 0 ? data->k_aut : NULL; 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Notification (id=%d)", id); 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_NOTIFICATION); 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (k_aut && data->reauth) { 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_IV"); 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_ENCR_DATA"); 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_encr_start(msg, EAP_SIM_AT_IV, 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_AT_ENCR_DATA); 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " *AT_COUNTER %d", data->counter); 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER, data->counter, 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt NULL, 0); 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_msg_add_encr_end(msg, data->k_encr, 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_AT_PADDING)) { 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Failed to encrypt " 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AT_ENCR_DATA"); 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_free(msg); 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (k_aut) { 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_MAC"); 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, k_aut, (u8 *) "", 0); 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_process_identity(struct eap_sm *sm, 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data, 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int id_error; 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Identity"); 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error = 0; 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (attr->id_req) { 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case NO_ID_REQ: 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case ANY_ID: 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_id_req > 0) 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error++; 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req++; 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case FULLAUTH_ID: 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_id_req > 1) 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error++; 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req++; 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case PERMANENT_ID: 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_id_req > 2) 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error++; 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req++; 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id_error) { 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: Too many ID requests " 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used within one authentication"); 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf = eap_aka_response_identity(sm, data, id, attr->id_req); 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->prev_id != id) { 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_add_id_msg(data, reqData); 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_add_id_msg(data, buf); 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->prev_id = id; 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_verify_mac(struct eap_aka_data *data, 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *req, 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *mac, const u8 *extra, 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t extra_len) 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_verify_mac_sha256(data->k_aut, req, mac, extra, 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt extra_len); 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_verify_mac(data->k_aut, req, mac, extra, extra_len); 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_prime_kdf_select(struct eap_aka_data *data, 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, u16 kdf) 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->kdf_negotiation = 1; 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->kdf = kdf; 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Challenge (id=%d) (KDF " 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "select)", id); 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_CHALLENGE); 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_KDF"); 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_KDF, kdf, NULL, 0); 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_prime_kdf_neg(struct eap_aka_data *data, 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, struct eap_sim_attrs *attr) 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < attr->kdf_count; i++) { 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf[i] == EAP_AKA_PRIME_KDF) 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_prime_kdf_select(data, id, 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_PRIME_KDF); 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* No matching KDF found - fail authentication as if AUTN had been 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * incorrect */ 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_prime_kdf_valid(struct eap_aka_data *data, 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i, j; 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf_count == 0) 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* The only allowed (and required) duplication of a KDF is the addition 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * of the selected KDF into the beginning of the list. */ 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->kdf_negotiation) { 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf[0] != data->kdf) { 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': The server did not " 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "accept the selected KDF"); 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 1; i < attr->kdf_count; i++) { 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf[i] == data->kdf) 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (i == attr->kdf_count && 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->kdf_count < EAP_AKA_PRIME_KDF_MAX) { 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': The server did not " 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "duplicate the selected KDF"); 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: should check that the list is identical to the one 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * used in the previous Challenge message apart from the added 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * entry in the beginning. */ 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = data->kdf ? 1 : 0; i < attr->kdf_count; i++) { 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (j = i + 1; j < attr->kdf_count; j++) { 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf[i] == attr->kdf[j]) { 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': The server " 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "included a duplicated KDF"); 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 1; 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_process_challenge(struct eap_sm *sm, 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data, 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *identity; 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t identity_len; 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs eattr; 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Challenge"); 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->checkcode && 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_verify_checkcode(data, attr->checkcode, 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->checkcode_len)) { 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Invalid AT_CHECKCODE in the " 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message"); 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) { 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!attr->kdf_input || attr->kdf_input_len == 0) { 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': Challenge message " 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "did not include non-empty AT_KDF_INPUT"); 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Fail authentication as if AUTN had been incorrect */ 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->network_name); 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->network_name = os_malloc(attr->kdf_input_len); 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->network_name == NULL) { 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': No memory for " 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "storing Network Name"); 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->network_name, attr->kdf_input, 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->kdf_input_len); 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->network_name_len = attr->kdf_input_len; 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA': Network Name " 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(AT_KDF_INPUT)", 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->network_name, data->network_name_len); 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: check Network Name per 3GPP.33.402 */ 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!eap_aka_prime_kdf_valid(data, attr)) 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf[0] != EAP_AKA_PRIME_KDF) 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_prime_kdf_neg(data, id, attr); 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->kdf = EAP_AKA_PRIME_KDF; 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA': KDF %d selected", data->kdf); 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA && attr->bidding) { 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 flags = WPA_GET_BE16(attr->bidding); 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((flags & EAP_AKA_BIDDING_FLAG_D) && 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_allowed_method(sm, EAP_VENDOR_IETF, 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_TYPE_AKA_PRIME)) { 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Bidding down from " 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AKA' to AKA detected"); 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Fail authentication as if AUTN had been incorrect */ 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 0; 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!attr->mac || !attr->rand || !attr->autn) { 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message " 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "did not include%s%s%s", 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !attr->mac ? " AT_MAC" : "", 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !attr->rand ? " AT_RAND" : "", 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !attr->autn ? " AT_AUTN" : ""); 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->rand, attr->rand, EAP_AKA_RAND_LEN); 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->autn, attr->autn, EAP_AKA_AUTN_LEN); 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_umts_auth(sm, data); 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res == -1) { 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: UMTS authentication " 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "failed (AUTN)"); 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (res == -2) { 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: UMTS authentication " 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "failed (AUTN seq# -> AUTS)"); 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_synchronization_failure(data, id); 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (res) { 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: UMTS authentication failed"); 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) { 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Note: AUTN = (SQN ^ AK) || AMF || MAC which gives us the 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * needed 6-octet SQN ^ AK for CK',IK' derivation */ 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 amf = WPA_GET_BE16(data->autn + 6); 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(amf & 0x8000)) { 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': AMF separation bit " 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not set (AMF=0x%4x)", amf); 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_prime_derive_ck_ik_prime(data->ck, data->ik, 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->autn, 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->network_name, 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->network_name_len); 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->last_eap_identity) { 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->last_eap_identity; 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->last_eap_identity_len; 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (data->pseudonym) { 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->pseudonym; 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->pseudonym_len; 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = eap_get_config_identity(sm, &identity_len); 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA: Selected identity for MK " 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "derivation", identity, identity_len); 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) { 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_prime_derive_keys(identity, identity_len, data->ik, 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->ck, data->k_encr, data->k_aut, 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->k_re, data->msk, data->emsk); 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_derive_mk(identity, identity_len, data->ik, data->ck, 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->mk); 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut, 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->msk, data->emsk); 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) { 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message " 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used invalid AT_MAC"); 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8821f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* Old reauthentication identity must not be used anymore. In 8831f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * other words, if no new identities are received, full 8841f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * authentication will be used on next reauthentication (using 8851f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * pseudonym identity or permanent identity). */ 8861f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt eap_aka_clear_identities(data, CLEAR_REAUTH_ID | CLEAR_EAP_ID); 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->encr_data) { 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *decrypted; 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data, 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_data_len, attr->iv, 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &eattr, 0); 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 8948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error( 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data, id, EAP_AKA_UNABLE_TO_PROCESS_PACKET); 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_learn_ids(data, &eattr); 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->result_ind && attr->result_ind) 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->use_result_ind = 1; 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != FAILURE && data->state != RESULT_FAILURE) { 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, data->use_result_ind ? 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RESULT_SUCCESS : SUCCESS); 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* RFC 4187 specifies that counter is initialized to one after 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * fullauth, but initializing it to zero makes it easier to implement 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reauth verification. */ 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->counter = 0; 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_response_challenge(data, id); 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_process_notification_reauth(struct eap_aka_data *data, 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs eattr; 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *decrypted; 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->encr_data == NULL || attr->iv == NULL) { 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Notification message after " 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "reauth did not include encrypted data"); 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data, 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_data_len, attr->iv, &eattr, 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0); 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Failed to parse encrypted " 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "data from notification message"); 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eattr.counter < 0 || (size_t) eattr.counter != data->counter) { 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Counter in notification " 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message does not match with counter in reauth " 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message"); 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_process_notification_auth(struct eap_aka_data *data, 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->mac == NULL) { 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: no AT_MAC in after_auth " 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Notification message"); 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) { 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Notification message " 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used invalid AT_MAC"); 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth && 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_process_notification_reauth(data, attr)) { 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Invalid notification " 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message after reauth"); 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_process_notification( 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sm *sm, struct eap_aka_data *data, u8 id, 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, struct eap_sim_attrs *attr) 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Notification"); 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_notification > 0) { 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: too many notification " 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "rounds (only one allowed)"); 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification++; 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->notification == -1) { 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: no AT_NOTIFICATION in " 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Notification message"); 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((attr->notification & 0x4000) == 0 && 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_process_notification_auth(data, reqData, attr)) { 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_report_notification(sm->msg_ctx, attr->notification, 1); 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->notification >= 0 && attr->notification < 32768) { 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, FAILURE); 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (attr->notification == EAP_SIM_SUCCESS && 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->state == RESULT_SUCCESS) 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, SUCCESS); 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_response_notification(data, id, attr->notification); 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_process_reauthentication( 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sm *sm, struct eap_aka_data *data, u8 id, 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, struct eap_sim_attrs *attr) 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs eattr; 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *decrypted; 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Reauthentication"); 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->checkcode && 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_verify_checkcode(data, attr->checkcode, 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->checkcode_len)) { 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Invalid AT_CHECKCODE in the " 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message"); 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth_id == NULL) { 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Server is trying " 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "reauthentication, but no reauth_id available"); 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 1; 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) { 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Reauthentication " 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "did not have valid AT_MAC"); 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->encr_data == NULL || attr->iv == NULL) { 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Reauthentication " 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message did not include encrypted data"); 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data, 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_data_len, attr->iv, &eattr, 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0); 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Failed to parse encrypted " 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "data from reauthentication message"); 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eattr.nonce_s == NULL || eattr.counter < 0) { 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: (encr) No%s%s in reauth packet", 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !eattr.nonce_s ? " AT_NONCE_S" : "", 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eattr.counter < 0 ? " AT_COUNTER" : ""); 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eattr.counter < 0 || (size_t) eattr.counter <= data->counter) { 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *res; 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: (encr) Invalid counter " 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(%d <= %d)", eattr.counter, data->counter); 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->counter_too_small = eattr.counter; 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Reply using Re-auth w/ AT_COUNTER_TOO_SMALL. The current 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reauth_id must not be used to start a new reauthentication. 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * However, since it was used in the last EAP-Response-Identity 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * packet, it has to saved for the following fullauth to be 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * used in MK derivation. */ 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->last_eap_identity); 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity = data->reauth_id; 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity_len = data->reauth_id_len; 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id = NULL; 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len = 0; 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_response_reauth(data, id, 1, eattr.nonce_s); 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return res; 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->counter = eattr.counter; 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->nonce_s, eattr.nonce_s, EAP_SIM_NONCE_S_LEN); 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-AKA: (encr) AT_NONCE_S", 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->nonce_s, EAP_SIM_NONCE_S_LEN); 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) { 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_prime_derive_keys_reauth(data->k_re, data->counter, 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id, 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len, 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->nonce_s, 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->msk, data->emsk); 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_derive_keys_reauth(data->counter, data->reauth_id, 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len, 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->nonce_s, data->mk, 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->msk, data->emsk); 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_clear_identities(data, CLEAR_REAUTH_ID | CLEAR_EAP_ID); 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_learn_ids(data, &eattr); 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->result_ind && attr->result_ind) 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->use_result_ind = 1; 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != FAILURE && data->state != RESULT_FAILURE) { 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, data->use_result_ind ? 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RESULT_SUCCESS : SUCCESS); 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->counter > EAP_AKA_MAX_FAST_REAUTHS) { 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Maximum number of " 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "fast reauths performed - force fullauth"); 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_clear_identities(data, CLEAR_REAUTH_ID | CLEAR_EAP_ID); 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_response_reauth(data, id, 0, data->nonce_s); 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_process(struct eap_sm *sm, void *priv, 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method_ret *ret, 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData) 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct eap_hdr *req; 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 subtype, id; 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *res; 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs attr; 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len; 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_buf(MSG_DEBUG, "EAP-AKA: EAP data", reqData); 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_get_config_identity(sm, &len) == NULL) { 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: Identity not configured"); 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sm_request_identity(sm); 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->ignore = TRUE; 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = eap_hdr_validate(EAP_VENDOR_IETF, data->eap_method, reqData, 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &len); 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos == NULL || len < 1) { 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->ignore = TRUE; 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req = wpabuf_head(reqData); 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id = req->identifier; 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = be_to_host16(req->length); 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->ignore = FALSE; 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_MAY_CONT; 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->allowNotifications = TRUE; 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subtype = *pos++; 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Subtype=%d", subtype); 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; /* Reserved */ 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_parse_attr(pos, wpabuf_head_u8(reqData) + len, &attr, 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->eap_method == EAP_TYPE_AKA_PRIME ? 2 : 1, 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0)) { 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_client_error(data, id, 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto done; 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (subtype) { 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_AKA_SUBTYPE_IDENTITY: 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_process_identity(sm, data, id, reqData, &attr); 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_AKA_SUBTYPE_CHALLENGE: 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_process_challenge(sm, data, id, reqData, &attr); 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_AKA_SUBTYPE_NOTIFICATION: 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_process_notification(sm, data, id, reqData, 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &attr); 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_AKA_SUBTYPE_REAUTHENTICATION: 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_process_reauthentication(sm, data, id, reqData, 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &attr); 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_AKA_SUBTYPE_CLIENT_ERROR: 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Client-Error"); 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_client_error(data, id, 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Unknown subtype=%d", subtype); 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_client_error(data, id, 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtdone: 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state == FAILURE) { 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 12148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_DONE; 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (data->state == SUCCESS) { 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = data->use_result_ind ? 12178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DECISION_UNCOND_SUCC : DECISION_COND_SUCC; 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 12198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * It is possible for the server to reply with AKA 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Notification, so we must allow the method to continue and 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * not only accept EAP-Success at this point. 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = data->use_result_ind ? 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt METHOD_DONE : METHOD_MAY_CONT; 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (data->state == RESULT_FAILURE) 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_CONT; 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (data->state == RESULT_SUCCESS) 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_CONT; 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret->methodState == METHOD_DONE) { 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->allowNotifications = FALSE; 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return res; 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic Boolean eap_aka_has_reauth_data(struct eap_sm *sm, void *priv) 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->pseudonym || data->reauth_id; 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_aka_deinit_for_reauth(struct eap_sm *sm, void *priv) 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 12488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_clear_identities(data, CLEAR_EAP_ID); 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->prev_id = -1; 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(data->id_msgs); 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->id_msgs = NULL; 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->use_result_ind = 0; 12538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->kdf_negotiation = 0; 12548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void * eap_aka_init_for_reauth(struct eap_sm *sm, void *priv) 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 12608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 12618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 12628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, CONTINUE); 12638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return priv; 12648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic const u8 * eap_aka_get_identity(struct eap_sm *sm, void *priv, 12688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t *len) 12698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 12718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth_id) { 12738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = data->reauth_id_len; 12748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->reauth_id; 12758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->pseudonym) { 12788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = data->pseudonym_len; 12798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->pseudonym; 12808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 12838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic Boolean eap_aka_isKeyAvailable(struct eap_sm *sm, void *priv) 12878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 12898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->state == SUCCESS; 12908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * eap_aka_getKey(struct eap_sm *sm, void *priv, size_t *len) 12948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 12968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *key; 12978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != SUCCESS) 12998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 13008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key = os_malloc(EAP_SIM_KEYING_DATA_LEN); 13028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key == NULL) 13038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 13048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = EAP_SIM_KEYING_DATA_LEN; 13068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(key, data->msk, EAP_SIM_KEYING_DATA_LEN); 13078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return key; 13098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * eap_aka_get_emsk(struct eap_sm *sm, void *priv, size_t *len) 13138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 13158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *key; 13168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != SUCCESS) 13188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 13198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key = os_malloc(EAP_EMSK_LEN); 13218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key == NULL) 13228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 13238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = EAP_EMSK_LEN; 13258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(key, data->emsk, EAP_EMSK_LEN); 13268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return key; 13288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint eap_peer_aka_register(void) 13328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method *eap; 13348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 13358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION, 13378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_VENDOR_IETF, EAP_TYPE_AKA, "AKA"); 13388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap == NULL) 13398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init = eap_aka_init; 13428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit = eap_aka_deinit; 13438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->process = eap_aka_process; 13448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->isKeyAvailable = eap_aka_isKeyAvailable; 13458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->getKey = eap_aka_getKey; 13468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->has_reauth_data = eap_aka_has_reauth_data; 13478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit_for_reauth = eap_aka_deinit_for_reauth; 13488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init_for_reauth = eap_aka_init_for_reauth; 13498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->get_identity = eap_aka_get_identity; 13508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->get_emsk = eap_aka_get_emsk; 13518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = eap_peer_method_register(eap); 13538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret) 13548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peer_method_free(eap); 13558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 13568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 13608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint eap_peer_aka_prime_register(void) 13618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method *eap; 13638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 13648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION, 13668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME, 13678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AKA'"); 13688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap == NULL) 13698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init = eap_aka_prime_init; 13728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit = eap_aka_deinit; 13738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->process = eap_aka_process; 13748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->isKeyAvailable = eap_aka_isKeyAvailable; 13758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->getKey = eap_aka_getKey; 13768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->has_reauth_data = eap_aka_has_reauth_data; 13778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit_for_reauth = eap_aka_deinit_for_reauth; 13788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init_for_reauth = eap_aka_init_for_reauth; 13798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->get_identity = eap_aka_get_identity; 13808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->get_emsk = eap_aka_get_emsk; 13818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = eap_peer_method_register(eap); 13838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret) 13848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peer_method_free(eap); 13858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 13878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 1389