eap_aka.c revision 051af73b8f8014eff33330aead0f36944b3403e6
18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * EAP peer method: EAP-AKA (RFC 4187) and EAP-AKA' (RFC 5448) 304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Copyright (c) 2004-2012, Jouni Malinen <j@w1.fi> 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * This software may be distributed under the terms of the BSD license. 6c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * See README for more details. 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "pcsc_funcs.h" 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/crypto.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/sha1.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/sha256.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/milenage.h" 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_common/eap_sim_common.h" 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_config.h" 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_i.h" 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct eap_aka_data { 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ik[EAP_AKA_IK_LEN], ck[EAP_AKA_CK_LEN], res[EAP_AKA_RES_MAX_LEN]; 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t res_len; 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 nonce_s[EAP_SIM_NONCE_S_LEN]; 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mk[EAP_SIM_MK_LEN]; 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 k_aut[EAP_AKA_PRIME_K_AUT_LEN]; 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 k_encr[EAP_SIM_K_ENCR_LEN]; 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 k_re[EAP_AKA_PRIME_K_RE_LEN]; /* EAP-AKA' only */ 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 msk[EAP_SIM_KEYING_DATA_LEN]; 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 emsk[EAP_EMSK_LEN]; 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 rand[EAP_AKA_RAND_LEN], autn[EAP_AKA_AUTN_LEN]; 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 auts[EAP_AKA_AUTS_LEN]; 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int num_id_req, num_notification; 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pseudonym; 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t pseudonym_len; 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *reauth_id; 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t reauth_id_len; 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int reauth; 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt unsigned int counter, counter_too_small; 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *last_eap_identity; 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t last_eap_identity_len; 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum { 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt CONTINUE, RESULT_SUCCESS, RESULT_FAILURE, SUCCESS, FAILURE 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } state; 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *id_msgs; 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int prev_id; 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int result_ind, use_result_ind; 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 eap_method; 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *network_name; 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t network_name_len; 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 kdf; 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int kdf_negotiation; 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifndef CONFIG_NO_STDOUT_DEBUG 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic const char * eap_aka_state_txt(int state) 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (state) { 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case CONTINUE: 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "CONTINUE"; 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RESULT_SUCCESS: 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "RESULT_SUCCESS"; 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RESULT_FAILURE: 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "RESULT_FAILURE"; 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SUCCESS: 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "SUCCESS"; 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case FAILURE: 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "FAILURE"; 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "?"; 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_NO_STDOUT_DEBUG */ 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_aka_state(struct eap_aka_data *data, int state) 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: %s -> %s", 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state_txt(data->state), 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state_txt(state)); 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->state = state; 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void * eap_aka_init(struct eap_sm *sm) 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data; 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const char *phase1 = eap_get_config_phase1(sm); 934530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt struct eap_peer_config *config = eap_get_config(sm); 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data = os_zalloc(sizeof(*data)); 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data == NULL) 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->eap_method = EAP_TYPE_AKA; 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, CONTINUE); 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->prev_id = -1; 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->result_ind = phase1 && os_strstr(phase1, "result_ind=1") != NULL; 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1064530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (config && config->anonymous_identity) { 1074530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt data->pseudonym = os_malloc(config->anonymous_identity_len); 1084530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (data->pseudonym) { 1094530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt os_memcpy(data->pseudonym, config->anonymous_identity, 1104530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt config->anonymous_identity_len); 1114530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt data->pseudonym_len = config->anonymous_identity_len; 1124530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt } 1134530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt } 1144530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data; 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void * eap_aka_prime_init(struct eap_sm *sm) 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = eap_aka_init(sm); 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data == NULL) 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->eap_method = EAP_TYPE_AKA_PRIME; 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data; 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_aka_deinit(struct eap_sm *sm, void *priv) 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data) { 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->pseudonym); 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->reauth_id); 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->last_eap_identity); 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(data->id_msgs); 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->network_name); 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data); 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 145051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidtstatic int eap_aka_ext_sim_req(struct eap_sm *sm, struct eap_aka_data *data) 146051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt{ 147051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt char req[200], *pos, *end; 148051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 149051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Use external USIM processing"); 150051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos = req; 151051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt end = pos + sizeof(req); 152051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos += os_snprintf(pos, end - pos, "UMTS-AUTH"); 153051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos += os_snprintf(pos, end - pos, ":"); 154051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos += wpa_snprintf_hex(pos, end - pos, data->rand, EAP_AKA_RAND_LEN); 155051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos += os_snprintf(pos, end - pos, ":"); 156051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos += wpa_snprintf_hex(pos, end - pos, data->autn, EAP_AKA_AUTN_LEN); 157051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 158051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt eap_sm_request_sim(sm, req); 159051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt return 1; 160051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt} 161051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 162051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 163051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidtstatic int eap_aka_ext_sim_result(struct eap_sm *sm, struct eap_aka_data *data, 164051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt struct eap_peer_config *conf) 165051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt{ 166051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt char *resp, *pos; 167051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 168051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt wpa_printf(MSG_DEBUG, 169051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt "EAP-AKA: Use result from external USIM processing"); 170051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 171051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt resp = conf->external_sim_resp; 172051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt conf->external_sim_resp = NULL; 173051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 174051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt if (os_strncmp(resp, "UMTS-AUTS:", 10) == 0) { 175051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos = resp + 10; 176051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt if (hexstr2bin(pos, data->auts, EAP_AKA_AUTS_LEN) < 0) 177051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt goto invalid; 178051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-AKA: AUTS", data->auts, 179051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt EAP_AKA_AUTS_LEN); 180051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt os_free(resp); 181051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt return -2; 182051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt } 183051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 184051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt if (os_strncmp(resp, "UMTS-AUTH:", 10) != 0) { 185051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Unrecognized external USIM processing response"); 186051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt os_free(resp); 187051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt return -1; 188051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt } 189051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 190051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos = resp + 10; 191051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-AKA: RAND", data->rand, EAP_AKA_RAND_LEN); 192051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 193051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt if (hexstr2bin(pos, data->ik, EAP_AKA_IK_LEN) < 0) 194051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt goto invalid; 195051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-AKA: IK", data->ik, EAP_AKA_IK_LEN); 196051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos += EAP_AKA_IK_LEN * 2; 197051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt if (*pos != ':') 198051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt goto invalid; 199051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos++; 200051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 201051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt if (hexstr2bin(pos, data->ck, EAP_AKA_CK_LEN) < 0) 202051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt goto invalid; 203051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-AKA: CK", data->ck, EAP_AKA_CK_LEN); 204051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos += EAP_AKA_CK_LEN * 2; 205051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt if (*pos != ':') 206051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt goto invalid; 207051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt pos++; 208051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 209051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt data->res_len = os_strlen(pos) / 2; 210051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt if (data->res_len > EAP_AKA_RES_MAX_LEN) { 211051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt data->res_len = 0; 212051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt goto invalid; 213051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt } 214051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt if (hexstr2bin(pos, data->res, data->res_len) < 0) 215051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt goto invalid; 216051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-AKA: RES", data->res, data->res_len); 217051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 218051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt os_free(resp); 219051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt return 0; 220051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 221051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidtinvalid: 222051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Invalid external USIM processing UMTS-AUTH response"); 223051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt os_free(resp); 224051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt return -1; 225051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt} 226051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 227051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_umts_auth(struct eap_sm *sm, struct eap_aka_data *data) 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peer_config *conf; 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: UMTS authentication algorithm"); 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt conf = eap_get_config(sm); 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf == NULL) 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 237051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 238051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt if (sm->external_sim) { 239051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt if (conf->external_sim_resp) 240051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt return eap_aka_ext_sim_result(sm, data, conf); 241051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt else 242051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt return eap_aka_ext_sim_req(sm, data); 243051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt } 244051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf->pcsc) { 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return scard_umts_auth(sm->scard_ctx, data->rand, 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->autn, data->res, &data->res_len, 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->ik, data->ck, data->auts); 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_USIM_SIMULATOR 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf->password) { 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 opc[16], k[16], sqn[6]; 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const char *pos; 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Use internal Milenage " 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "implementation for UMTS authentication"); 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf->password_len < 78) { 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: invalid Milenage " 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "password"); 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (const char *) conf->password; 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (hexstr2bin(pos, k, 16)) 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 32; 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*pos != ':') 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos++; 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (hexstr2bin(pos, opc, 16)) 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 32; 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*pos != ':') 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos++; 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (hexstr2bin(pos, sqn, 6)) 2788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return milenage_check(opc, k, sqn, data->rand, data->autn, 2818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->ik, data->ck, 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->res, &data->res_len, data->auts); 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_USIM_SIMULATOR */ 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_USIM_HARDCODED 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Use hardcoded Kc and SRES values for " 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "testing"); 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* These hardcoded Kc and SRES values are used for testing. 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Could consider making them configurable. */ 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(data->res, '2', EAP_AKA_RES_MAX_LEN); 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->res_len = EAP_AKA_RES_MAX_LEN; 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(data->ik, '3', EAP_AKA_IK_LEN); 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(data->ck, '4', EAP_AKA_CK_LEN); 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 autn[EAP_AKA_AUTN_LEN]; 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(autn, '1', EAP_AKA_AUTN_LEN); 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(autn, data->autn, EAP_AKA_AUTN_LEN) != 0) { 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: AUTN did not match " 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "with expected value"); 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#if 0 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt static int test_resync = 1; 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (test_resync) { 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Test Resynchronization */ 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt test_resync = 0; 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -2; 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#else /* CONFIG_USIM_HARDCODED */ 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: No UMTS authentication algorith " 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "enabled"); 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_USIM_HARDCODED */ 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define CLEAR_PSEUDONYM 0x01 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define CLEAR_REAUTH_ID 0x02 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define CLEAR_EAP_ID 0x04 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3314530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidtstatic void eap_aka_clear_identities(struct eap_sm *sm, 3324530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt struct eap_aka_data *data, int id) 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 33404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if ((id & CLEAR_PSEUDONYM) && data->pseudonym) { 3351f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: forgetting old pseudonym"); 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->pseudonym); 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym = NULL; 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym_len = 0; 3394530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_set_anon_id(sm, NULL, 0); 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 34104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if ((id & CLEAR_REAUTH_ID) && data->reauth_id) { 3421f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: forgetting old reauth_id"); 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->reauth_id); 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id = NULL; 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len = 0; 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 34704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if ((id & CLEAR_EAP_ID) && data->last_eap_identity) { 3481f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: forgetting old eap_id"); 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->last_eap_identity); 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity = NULL; 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity_len = 0; 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 356c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidtstatic int eap_aka_learn_ids(struct eap_sm *sm, struct eap_aka_data *data, 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->next_pseudonym) { 360c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt const u8 *identity = NULL; 361c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt size_t identity_len = 0; 362c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt const u8 *realm = NULL; 363c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt size_t realm_len = 0; 364c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt 365c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, 366c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt "EAP-AKA: (encr) AT_NEXT_PSEUDONYM", 367c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt attr->next_pseudonym, 368c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt attr->next_pseudonym_len); 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->pseudonym); 370c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt /* Look for the realm of the permanent identity */ 371c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt identity = eap_get_config_identity(sm, &identity_len); 372c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (identity) { 373c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt for (realm = identity, realm_len = identity_len; 374c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt realm_len > 0; realm_len--, realm++) { 375c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (*realm == '@') 376c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt break; 377c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt } 378c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt } 379c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt data->pseudonym = os_malloc(attr->next_pseudonym_len + 380c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt realm_len); 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->pseudonym == NULL) { 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: (encr) No memory for " 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "next pseudonym"); 384c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt data->pseudonym_len = 0; 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->pseudonym, attr->next_pseudonym, 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->next_pseudonym_len); 389c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (realm_len) { 390c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt os_memcpy(data->pseudonym + attr->next_pseudonym_len, 391c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt realm, realm_len); 392c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt } 393c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt data->pseudonym_len = attr->next_pseudonym_len + realm_len; 3944530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_set_anon_id(sm, data->pseudonym, data->pseudonym_len); 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->next_reauth_id) { 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->reauth_id); 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id = os_malloc(attr->next_reauth_id_len); 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth_id == NULL) { 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: (encr) No memory for " 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "next reauth_id"); 403c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt data->reauth_id_len = 0; 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->reauth_id, attr->next_reauth_id, 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->next_reauth_id_len); 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len = attr->next_reauth_id_len; 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP-AKA: (encr) AT_NEXT_REAUTH_ID", 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id, 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len); 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_add_id_msg(struct eap_aka_data *data, 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->id_msgs == NULL) { 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->id_msgs = wpabuf_dup(msg); 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->id_msgs == NULL ? -1 : 0; 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpabuf_resize(&data->id_msgs, wpabuf_len(msg)) < 0) 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_buf(data->id_msgs, msg); 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_aka_add_checkcode(struct eap_aka_data *data, 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg) 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr; 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len; 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_CHECKCODE"); 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->id_msgs == NULL) { 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * No EAP-AKA/Identity packets were exchanged - send empty 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * checkcode. 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_CHECKCODE, 0, NULL, 0); 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Checkcode is SHA1/SHA256 hash over all EAP-AKA/Identity packets. */ 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr = wpabuf_head(data->id_msgs); 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = wpabuf_len(data->id_msgs); 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "EAP-AKA: AT_CHECKCODE data", addr, len); 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha256_vector(1, &addr, &len, hash); 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha1_vector(1, &addr, &len, hash); 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_CHECKCODE, 0, hash, 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->eap_method == EAP_TYPE_AKA_PRIME ? 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN); 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_verify_checkcode(struct eap_aka_data *data, 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *checkcode, size_t checkcode_len) 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr; 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len; 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t hash_len; 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (checkcode == NULL) 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->id_msgs == NULL) { 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (checkcode_len != 0) { 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Checkcode from server " 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "indicates that AKA/Identity messages were " 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used, but they were not"); 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hash_len = data->eap_method == EAP_TYPE_AKA_PRIME ? 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN; 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (checkcode_len != hash_len) { 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Checkcode from server " 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "indicates that AKA/Identity message were not " 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used, but they were"); 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Checkcode is SHA1/SHA256 hash over all EAP-AKA/Identity packets. */ 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr = wpabuf_head(data->id_msgs); 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = wpabuf_len(data->id_msgs); 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha256_vector(1, &addr, &len, hash); 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha1_vector(1, &addr, &len, hash); 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(hash, checkcode, hash_len) != 0) { 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Mismatch in AT_CHECKCODE"); 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_client_error(struct eap_aka_data *data, u8 id, 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int err) 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, FAILURE); 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5324530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Send Client-Error (error code %d)", 5334530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt err); 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_CLIENT_ERROR); 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_CLIENT_ERROR_CODE, err, NULL, 0); 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_authentication_reject(struct eap_aka_data *data, 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id) 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, FAILURE); 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Authentication-Reject " 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(id=%d)", id); 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_AUTHENTICATION_REJECT); 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_synchronization_failure( 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data, u8 id) 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Synchronization-Failure " 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(id=%d)", id); 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_SYNCHRONIZATION_FAILURE); 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_AUTS"); 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_full(msg, EAP_SIM_AT_AUTS, data->auts, 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_AUTS_LEN); 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_response_identity(struct eap_sm *sm, 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data, 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum eap_sim_id_req id_req) 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *identity = NULL; 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t identity_len = 0; 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 0; 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id_req == ANY_ID && data->reauth_id) { 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->reauth_id; 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->reauth_id_len; 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 1; 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if ((id_req == ANY_ID || id_req == FULLAUTH_ID) && 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pseudonym) { 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->pseudonym; 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->pseudonym_len; 5954530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_aka_clear_identities(sm, data, CLEAR_REAUTH_ID); 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (id_req != NO_ID_REQ) { 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = eap_get_config_identity(sm, &identity_len); 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (identity) { 5994530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_aka_clear_identities(sm, data, CLEAR_PSEUDONYM | 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt CLEAR_REAUTH_ID); 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id_req != NO_ID_REQ) 6044530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_aka_clear_identities(sm, data, CLEAR_EAP_ID); 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Identity (id=%d)", id); 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_IDENTITY); 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (identity) { 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, " AT_IDENTITY", 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity, identity_len); 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_IDENTITY, identity_len, 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity, identity_len); 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_response_challenge(struct eap_aka_data *data, 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id) 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Challenge (id=%d)", id); 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_CHALLENGE); 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_RES"); 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_RES, data->res_len * 8, 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->res, data->res_len); 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_add_checkcode(data, msg); 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->use_result_ind) { 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_RESULT_IND"); 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_RESULT_IND, 0, NULL, 0); 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_MAC"); 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, data->k_aut, (u8 *) "", 0); 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_response_reauth(struct eap_aka_data *data, 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, int counter_too_small, 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *nonce_s) 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt unsigned int counter; 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Reauthentication (id=%d)", 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id); 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_REAUTHENTICATION); 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_IV"); 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_ENCR_DATA"); 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_encr_start(msg, EAP_SIM_AT_IV, EAP_SIM_AT_ENCR_DATA); 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (counter_too_small) { 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " *AT_COUNTER_TOO_SMALL"); 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER_TOO_SMALL, 0, NULL, 0); 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt counter = data->counter_too_small; 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt counter = data->counter; 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " *AT_COUNTER %d", counter); 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER, counter, NULL, 0); 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_msg_add_encr_end(msg, data->k_encr, EAP_SIM_AT_PADDING)) { 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Failed to encrypt " 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AT_ENCR_DATA"); 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_free(msg); 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_add_checkcode(data, msg); 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->use_result_ind) { 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_RESULT_IND"); 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_RESULT_IND, 0, NULL, 0); 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_MAC"); 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, data->k_aut, nonce_s, 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_NONCE_S_LEN); 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_response_notification(struct eap_aka_data *data, 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, u16 notification) 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *k_aut = (notification & 0x4000) == 0 ? data->k_aut : NULL; 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Notification (id=%d)", id); 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_NOTIFICATION); 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (k_aut && data->reauth) { 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_IV"); 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_ENCR_DATA"); 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_encr_start(msg, EAP_SIM_AT_IV, 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_AT_ENCR_DATA); 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " *AT_COUNTER %d", data->counter); 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER, data->counter, 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt NULL, 0); 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_msg_add_encr_end(msg, data->k_encr, 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_SIM_AT_PADDING)) { 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Failed to encrypt " 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AT_ENCR_DATA"); 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_free(msg); 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (k_aut) { 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_MAC"); 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC); 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, k_aut, (u8 *) "", 0); 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_process_identity(struct eap_sm *sm, 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data, 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int id_error; 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Identity"); 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error = 0; 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (attr->id_req) { 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case NO_ID_REQ: 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case ANY_ID: 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_id_req > 0) 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error++; 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req++; 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case FULLAUTH_ID: 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_id_req > 1) 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error++; 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req++; 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case PERMANENT_ID: 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_id_req > 2) 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id_error++; 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req++; 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (id_error) { 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: Too many ID requests " 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used within one authentication"); 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf = eap_aka_response_identity(sm, data, id, attr->id_req); 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->prev_id != id) { 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_add_id_msg(data, reqData); 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_add_id_msg(data, buf); 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->prev_id = id; 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_verify_mac(struct eap_aka_data *data, 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *req, 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *mac, const u8 *extra, 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t extra_len) 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_verify_mac_sha256(data->k_aut, req, mac, extra, 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt extra_len); 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_verify_mac(data->k_aut, req, mac, extra, extra_len); 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_prime_kdf_select(struct eap_aka_data *data, 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, u16 kdf) 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_msg *msg; 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->kdf_negotiation = 1; 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->kdf = kdf; 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "Generating EAP-AKA Challenge (id=%d) (KDF " 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "select)", id); 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method, 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_SUBTYPE_CHALLENGE); 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, " AT_KDF"); 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_msg_add(msg, EAP_SIM_AT_KDF, kdf, NULL, 0); 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_sim_msg_finish(msg, NULL, NULL, 0); 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_prime_kdf_neg(struct eap_aka_data *data, 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, struct eap_sim_attrs *attr) 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < attr->kdf_count; i++) { 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf[i] == EAP_AKA_PRIME_KDF) 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_prime_kdf_select(data, id, 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_PRIME_KDF); 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* No matching KDF found - fail authentication as if AUTN had been 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * incorrect */ 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_prime_kdf_valid(struct eap_aka_data *data, 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i, j; 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf_count == 0) 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* The only allowed (and required) duplication of a KDF is the addition 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * of the selected KDF into the beginning of the list. */ 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->kdf_negotiation) { 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf[0] != data->kdf) { 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': The server did not " 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "accept the selected KDF"); 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 1; i < attr->kdf_count; i++) { 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf[i] == data->kdf) 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (i == attr->kdf_count && 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->kdf_count < EAP_AKA_PRIME_KDF_MAX) { 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': The server did not " 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "duplicate the selected KDF"); 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: should check that the list is identical to the one 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * used in the previous Challenge message apart from the added 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * entry in the beginning. */ 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = data->kdf ? 1 : 0; i < attr->kdf_count; i++) { 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (j = i + 1; j < attr->kdf_count; j++) { 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf[i] == attr->kdf[j]) { 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': The server " 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "included a duplicated KDF"); 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 1; 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_process_challenge(struct eap_sm *sm, 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data, 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 id, 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *identity; 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t identity_len; 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs eattr; 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Challenge"); 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->checkcode && 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_verify_checkcode(data, attr->checkcode, 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->checkcode_len)) { 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Invalid AT_CHECKCODE in the " 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message"); 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) { 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!attr->kdf_input || attr->kdf_input_len == 0) { 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': Challenge message " 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "did not include non-empty AT_KDF_INPUT"); 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Fail authentication as if AUTN had been incorrect */ 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 8948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->network_name); 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->network_name = os_malloc(attr->kdf_input_len); 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->network_name == NULL) { 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': No memory for " 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "storing Network Name"); 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->network_name, attr->kdf_input, 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->kdf_input_len); 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->network_name_len = attr->kdf_input_len; 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA': Network Name " 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(AT_KDF_INPUT)", 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->network_name, data->network_name_len); 9088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: check Network Name per 3GPP.33.402 */ 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!eap_aka_prime_kdf_valid(data, attr)) 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->kdf[0] != EAP_AKA_PRIME_KDF) 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_prime_kdf_neg(data, id, attr); 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->kdf = EAP_AKA_PRIME_KDF; 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA': KDF %d selected", data->kdf); 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA && attr->bidding) { 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 flags = WPA_GET_BE16(attr->bidding); 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((flags & EAP_AKA_BIDDING_FLAG_D) && 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_allowed_method(sm, EAP_VENDOR_IETF, 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_TYPE_AKA_PRIME)) { 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Bidding down from " 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AKA' to AKA detected"); 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Fail authentication as if AUTN had been incorrect */ 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 0; 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!attr->mac || !attr->rand || !attr->autn) { 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message " 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "did not include%s%s%s", 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !attr->mac ? " AT_MAC" : "", 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !attr->rand ? " AT_RAND" : "", 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !attr->autn ? " AT_AUTN" : ""); 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->rand, attr->rand, EAP_AKA_RAND_LEN); 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->autn, attr->autn, EAP_AKA_AUTN_LEN); 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_umts_auth(sm, data); 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res == -1) { 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: UMTS authentication " 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "failed (AUTN)"); 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (res == -2) { 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: UMTS authentication " 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "failed (AUTN seq# -> AUTS)"); 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_synchronization_failure(data, id); 955051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt } else if (res > 0) { 956051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Wait for external USIM processing"); 957051af73b8f8014eff33330aead0f36944b3403e6Dmitry Shmidt return NULL; 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (res) { 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: UMTS authentication failed"); 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) { 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Note: AUTN = (SQN ^ AK) || AMF || MAC which gives us the 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * needed 6-octet SQN ^ AK for CK',IK' derivation */ 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 amf = WPA_GET_BE16(data->autn + 6); 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(amf & 0x8000)) { 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA': AMF separation bit " 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not set (AMF=0x%4x)", amf); 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_authentication_reject(data, id); 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_prime_derive_ck_ik_prime(data->ck, data->ik, 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->autn, 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->network_name, 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->network_name_len); 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->last_eap_identity) { 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->last_eap_identity; 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->last_eap_identity_len; 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (data->pseudonym) { 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = data->pseudonym; 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity_len = data->pseudonym_len; 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt identity = eap_get_config_identity(sm, &identity_len); 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA: Selected identity for MK " 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "derivation", identity, identity_len); 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) { 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_prime_derive_keys(identity, identity_len, data->ik, 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->ck, data->k_encr, data->k_aut, 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->k_re, data->msk, data->emsk); 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_derive_mk(identity, identity_len, data->ik, data->ck, 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->mk); 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut, 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->msk, data->emsk); 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) { 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message " 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used invalid AT_MAC"); 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10061f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt /* Old reauthentication identity must not be used anymore. In 10071f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * other words, if no new identities are received, full 10081f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * authentication will be used on next reauthentication (using 10091f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt * pseudonym identity or permanent identity). */ 10104530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_aka_clear_identities(sm, data, CLEAR_REAUTH_ID | CLEAR_EAP_ID); 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->encr_data) { 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *decrypted; 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data, 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_data_len, attr->iv, 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &eattr, 0); 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error( 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data, id, EAP_AKA_UNABLE_TO_PROCESS_PACKET); 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1021c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt eap_aka_learn_ids(sm, data, &eattr); 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->result_ind && attr->result_ind) 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->use_result_ind = 1; 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != FAILURE && data->state != RESULT_FAILURE) { 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, data->use_result_ind ? 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RESULT_SUCCESS : SUCCESS); 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* RFC 4187 specifies that counter is initialized to one after 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * fullauth, but initializing it to zero makes it easier to implement 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reauth verification. */ 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->counter = 0; 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_response_challenge(data, id); 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_process_notification_reauth(struct eap_aka_data *data, 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs eattr; 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *decrypted; 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->encr_data == NULL || attr->iv == NULL) { 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Notification message after " 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "reauth did not include encrypted data"); 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 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 notification message"); 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eattr.counter < 0 || (size_t) eattr.counter != data->counter) { 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Counter in notification " 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message does not match with counter in reauth " 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message"); 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_aka_process_notification_auth(struct eap_aka_data *data, 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs *attr) 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->mac == NULL) { 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: no AT_MAC in after_auth " 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Notification message"); 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) { 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Notification message " 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "used invalid AT_MAC"); 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth && 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_process_notification_reauth(data, attr)) { 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Invalid notification " 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message after reauth"); 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_process_notification( 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sm *sm, struct eap_aka_data *data, u8 id, 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, struct eap_sim_attrs *attr) 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Notification"); 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->num_notification > 0) { 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: too many notification " 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "rounds (only one allowed)"); 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification++; 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->notification == -1) { 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: no AT_NOTIFICATION in " 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Notification message"); 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((attr->notification & 0x4000) == 0 && 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_process_notification_auth(data, reqData, attr)) { 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_report_notification(sm->msg_ctx, attr->notification, 1); 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->notification >= 0 && attr->notification < 32768) { 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, FAILURE); 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (attr->notification == EAP_SIM_SUCCESS && 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->state == RESULT_SUCCESS) 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, SUCCESS); 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_response_notification(data, id, attr->notification); 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_process_reauthentication( 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sm *sm, struct eap_aka_data *data, u8 id, 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData, struct eap_sim_attrs *attr) 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs eattr; 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *decrypted; 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Reauthentication"); 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->checkcode && 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_verify_checkcode(data, attr->checkcode, 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->checkcode_len)) { 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Invalid AT_CHECKCODE in the " 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message"); 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth_id == NULL) { 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Server is trying " 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "reauthentication, but no reauth_id available"); 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 1; 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) { 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Reauthentication " 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "did not have valid AT_MAC"); 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->encr_data == NULL || attr->iv == NULL) { 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Reauthentication " 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "message did not include encrypted data"); 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data, 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_data_len, attr->iv, &eattr, 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0); 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-AKA: Failed to parse encrypted " 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "data from reauthentication message"); 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eattr.nonce_s == NULL || eattr.counter < 0) { 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: (encr) No%s%s in reauth packet", 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !eattr.nonce_s ? " AT_NONCE_S" : "", 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eattr.counter < 0 ? " AT_COUNTER" : ""); 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_client_error(data, id, 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eattr.counter < 0 || (size_t) eattr.counter <= data->counter) { 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *res; 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: (encr) Invalid counter " 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(%d <= %d)", eattr.counter, data->counter); 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->counter_too_small = eattr.counter; 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Reply using Re-auth w/ AT_COUNTER_TOO_SMALL. The current 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reauth_id must not be used to start a new reauthentication. 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * However, since it was used in the last EAP-Response-Identity 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * packet, it has to saved for the following fullauth to be 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * used in MK derivation. */ 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->last_eap_identity); 12108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity = data->reauth_id; 12118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->last_eap_identity_len = data->reauth_id_len; 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id = NULL; 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len = 0; 12148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_response_reauth(data, id, 1, eattr.nonce_s); 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 12178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return res; 12198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->counter = eattr.counter; 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->nonce_s, eattr.nonce_s, EAP_SIM_NONCE_S_LEN); 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-AKA: (encr) AT_NONCE_S", 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->nonce_s, EAP_SIM_NONCE_S_LEN); 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->eap_method == EAP_TYPE_AKA_PRIME) { 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_prime_derive_keys_reauth(data->k_re, data->counter, 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id, 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len, 12308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->nonce_s, 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->msk, data->emsk); 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sim_derive_keys_reauth(data->counter, data->reauth_id, 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth_id_len, 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->nonce_s, data->mk, 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->msk, data->emsk); 12378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12384530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_aka_clear_identities(sm, data, CLEAR_REAUTH_ID | CLEAR_EAP_ID); 1239c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt eap_aka_learn_ids(sm, data, &eattr); 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->result_ind && attr->result_ind) 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->use_result_ind = 1; 12438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != FAILURE && data->state != RESULT_FAILURE) { 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, data->use_result_ind ? 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RESULT_SUCCESS : SUCCESS); 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->counter > EAP_AKA_MAX_FAST_REAUTHS) { 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Maximum number of " 12538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "fast reauths performed - force fullauth"); 12544530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_aka_clear_identities(sm, data, 12554530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt CLEAR_REAUTH_ID | CLEAR_EAP_ID); 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(decrypted); 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_aka_response_reauth(data, id, 0, data->nonce_s); 12598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_aka_process(struct eap_sm *sm, void *priv, 12638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method_ret *ret, 12648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData) 12658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 12678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct eap_hdr *req; 12688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 subtype, id; 12698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *res; 12708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 12718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sim_attrs attr; 12728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len; 12738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_buf(MSG_DEBUG, "EAP-AKA: EAP data", reqData); 12758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_get_config_identity(sm, &len) == NULL) { 12768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-AKA: Identity not configured"); 12778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_sm_request_identity(sm); 12788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->ignore = TRUE; 12798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 12808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = eap_hdr_validate(EAP_VENDOR_IETF, data->eap_method, reqData, 12838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &len); 12848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos == NULL || len < 1) { 12858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->ignore = TRUE; 12868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 12878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req = wpabuf_head(reqData); 12898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id = req->identifier; 12908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = be_to_host16(req->length); 12918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->ignore = FALSE; 12938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_MAY_CONT; 12948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 12958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->allowNotifications = TRUE; 12968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subtype = *pos++; 12988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Subtype=%d", subtype); 12998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; /* Reserved */ 13008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_sim_parse_attr(pos, wpabuf_head_u8(reqData) + len, &attr, 13028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->eap_method == EAP_TYPE_AKA_PRIME ? 2 : 1, 13038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0)) { 13048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_client_error(data, id, 13058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 13068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto done; 13078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (subtype) { 13108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_AKA_SUBTYPE_IDENTITY: 13118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_process_identity(sm, data, id, reqData, &attr); 13128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_AKA_SUBTYPE_CHALLENGE: 13148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_process_challenge(sm, data, id, reqData, &attr); 13158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_AKA_SUBTYPE_NOTIFICATION: 13178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_process_notification(sm, data, id, reqData, 13188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &attr); 13198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_AKA_SUBTYPE_REAUTHENTICATION: 13218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_process_reauthentication(sm, data, id, reqData, 13228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &attr); 13238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_AKA_SUBTYPE_CLIENT_ERROR: 13258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Client-Error"); 13268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_client_error(data, id, 13278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 13288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 13308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-AKA: Unknown subtype=%d", subtype); 13318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_aka_client_error(data, id, 13328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_AKA_UNABLE_TO_PROCESS_PACKET); 13338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtdone: 13378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state == FAILURE) { 13388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 13398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_DONE; 13408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (data->state == SUCCESS) { 13418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = data->use_result_ind ? 13428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt DECISION_UNCOND_SUCC : DECISION_COND_SUCC; 13438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 13448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * It is possible for the server to reply with AKA 13458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Notification, so we must allow the method to continue and 13468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * not only accept EAP-Success at this point. 13478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 13488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = data->use_result_ind ? 13498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt METHOD_DONE : METHOD_MAY_CONT; 13508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (data->state == RESULT_FAILURE) 13518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_CONT; 13528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (data->state == RESULT_SUCCESS) 13538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_CONT; 13548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret->methodState == METHOD_DONE) { 13568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->allowNotifications = FALSE; 13578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return res; 13608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic Boolean eap_aka_has_reauth_data(struct eap_sm *sm, void *priv) 13648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 13668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->pseudonym || data->reauth_id; 13678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_aka_deinit_for_reauth(struct eap_sm *sm, void *priv) 13718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 13734530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt eap_aka_clear_identities(sm, data, CLEAR_EAP_ID); 13748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->prev_id = -1; 13758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(data->id_msgs); 13768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->id_msgs = NULL; 13778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->use_result_ind = 0; 13788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->kdf_negotiation = 0; 13798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void * eap_aka_init_for_reauth(struct eap_sm *sm, void *priv) 13838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 13858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_id_req = 0; 13868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_notification = 0; 13878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_aka_state(data, CONTINUE); 13888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return priv; 13898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic const u8 * eap_aka_get_identity(struct eap_sm *sm, void *priv, 13938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t *len) 13948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 13968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth_id) { 13988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = data->reauth_id_len; 13998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->reauth_id; 14008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->pseudonym) { 14038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = data->pseudonym_len; 14048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->pseudonym; 14058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 14088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 14098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic Boolean eap_aka_isKeyAvailable(struct eap_sm *sm, void *priv) 14128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 14138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 14148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->state == SUCCESS; 14158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 14168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * eap_aka_getKey(struct eap_sm *sm, void *priv, size_t *len) 14198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 14208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 14218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *key; 14228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != SUCCESS) 14248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 14258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key = os_malloc(EAP_SIM_KEYING_DATA_LEN); 14278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key == NULL) 14288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 14298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = EAP_SIM_KEYING_DATA_LEN; 14318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(key, data->msk, EAP_SIM_KEYING_DATA_LEN); 14328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return key; 14348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 14358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1437f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidtstatic u8 * eap_aka_get_session_id(struct eap_sm *sm, void *priv, size_t *len) 1438f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt{ 1439f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt struct eap_aka_data *data = priv; 1440f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt u8 *id; 1441f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1442f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (data->state != SUCCESS) 1443f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return NULL; 1444f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1445f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt *len = 1 + EAP_AKA_RAND_LEN + EAP_AKA_AUTN_LEN; 1446f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt id = os_malloc(*len); 1447f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (id == NULL) 1448f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return NULL; 1449f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1450f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt id[0] = data->eap_method; 1451f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_memcpy(id + 1, data->rand, EAP_AKA_RAND_LEN); 1452f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt os_memcpy(id + 1 + EAP_AKA_RAND_LEN, data->autn, EAP_AKA_AUTN_LEN); 1453f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-AKA: Derived Session-Id", id, *len); 1454f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1455f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return id; 1456f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt} 1457f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 1458f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 14598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * eap_aka_get_emsk(struct eap_sm *sm, void *priv, size_t *len) 14608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 14618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_aka_data *data = priv; 14628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *key; 14638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->state != SUCCESS) 14658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 14668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key = os_malloc(EAP_EMSK_LEN); 14688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key == NULL) 14698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 14708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = EAP_EMSK_LEN; 14728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(key, data->emsk, EAP_EMSK_LEN); 14738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return key; 14758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 14768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint eap_peer_aka_register(void) 14798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 14808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method *eap; 14818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 14828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION, 14848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_VENDOR_IETF, EAP_TYPE_AKA, "AKA"); 14858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap == NULL) 14868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init = eap_aka_init; 14898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit = eap_aka_deinit; 14908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->process = eap_aka_process; 14918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->isKeyAvailable = eap_aka_isKeyAvailable; 14928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->getKey = eap_aka_getKey; 1493f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt eap->getSessionId = eap_aka_get_session_id; 14948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->has_reauth_data = eap_aka_has_reauth_data; 14958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit_for_reauth = eap_aka_deinit_for_reauth; 14968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init_for_reauth = eap_aka_init_for_reauth; 14978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->get_identity = eap_aka_get_identity; 14988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->get_emsk = eap_aka_get_emsk; 14998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = eap_peer_method_register(eap); 15018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret) 15028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peer_method_free(eap); 15038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 15048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 15058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_AKA_PRIME 15088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint eap_peer_aka_prime_register(void) 15098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 15108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method *eap; 15118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 15128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION, 15148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME, 15158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AKA'"); 15168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap == NULL) 15178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init = eap_aka_prime_init; 15208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit = eap_aka_deinit; 15218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->process = eap_aka_process; 15228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->isKeyAvailable = eap_aka_isKeyAvailable; 15238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->getKey = eap_aka_getKey; 1524f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt eap->getSessionId = eap_aka_get_session_id; 15258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->has_reauth_data = eap_aka_has_reauth_data; 15268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit_for_reauth = eap_aka_deinit_for_reauth; 15278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init_for_reauth = eap_aka_init_for_reauth; 15288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->get_identity = eap_aka_get_identity; 15298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->get_emsk = eap_aka_get_emsk; 15308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = eap_peer_method_register(eap); 15328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret) 15338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peer_method_free(eap); 15348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 15368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 15378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_AKA_PRIME */ 1538