03da66bd59
In addition, start ordering header file includes to be in more consistent order: system header files, src/utils, src/*, same directory as the *.c file.
1277 lines
33 KiB
C
1277 lines
33 KiB
C
/*
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* hostapd / EAP-AKA (RFC 4187) and EAP-AKA' (draft-arkko-eap-aka-kdf)
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* Copyright (c) 2005-2008, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "crypto/sha256.h"
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#include "crypto/crypto.h"
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#include "eap_common/eap_sim_common.h"
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#include "eap_server/eap_i.h"
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#include "eap_server/eap_sim_db.h"
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struct eap_aka_data {
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u8 mk[EAP_SIM_MK_LEN];
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u8 nonce_s[EAP_SIM_NONCE_S_LEN];
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u8 k_aut[EAP_AKA_PRIME_K_AUT_LEN];
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u8 k_encr[EAP_SIM_K_ENCR_LEN];
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u8 k_re[EAP_AKA_PRIME_K_RE_LEN]; /* EAP-AKA' only */
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u8 msk[EAP_SIM_KEYING_DATA_LEN];
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u8 emsk[EAP_EMSK_LEN];
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u8 rand[EAP_AKA_RAND_LEN];
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u8 autn[EAP_AKA_AUTN_LEN];
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u8 ck[EAP_AKA_CK_LEN];
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u8 ik[EAP_AKA_IK_LEN];
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u8 res[EAP_AKA_RES_MAX_LEN];
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size_t res_len;
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enum {
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IDENTITY, CHALLENGE, REAUTH, NOTIFICATION, SUCCESS, FAILURE
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} state;
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char *next_pseudonym;
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char *next_reauth_id;
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u16 counter;
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struct eap_sim_reauth *reauth;
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int auts_reported; /* whether the current AUTS has been reported to the
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* eap_sim_db */
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u16 notification;
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int use_result_ind;
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struct wpabuf *id_msgs;
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int pending_id;
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u8 eap_method;
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u8 *network_name;
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size_t network_name_len;
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u16 kdf;
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};
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static void eap_aka_determine_identity(struct eap_sm *sm,
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struct eap_aka_data *data,
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int before_identity, int after_reauth);
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static const char * eap_aka_state_txt(int state)
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{
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switch (state) {
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case IDENTITY:
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return "IDENTITY";
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case CHALLENGE:
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return "CHALLENGE";
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case REAUTH:
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return "REAUTH";
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case SUCCESS:
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return "SUCCESS";
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case FAILURE:
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return "FAILURE";
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case NOTIFICATION:
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return "NOTIFICATION";
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default:
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return "Unknown?!";
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}
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}
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static void eap_aka_state(struct eap_aka_data *data, int state)
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{
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wpa_printf(MSG_DEBUG, "EAP-AKA: %s -> %s",
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eap_aka_state_txt(data->state),
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eap_aka_state_txt(state));
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data->state = state;
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}
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static void * eap_aka_init(struct eap_sm *sm)
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{
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struct eap_aka_data *data;
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if (sm->eap_sim_db_priv == NULL) {
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wpa_printf(MSG_WARNING, "EAP-AKA: eap_sim_db not configured");
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return NULL;
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}
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data = os_zalloc(sizeof(*data));
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if (data == NULL)
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return NULL;
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data->eap_method = EAP_TYPE_AKA;
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data->state = IDENTITY;
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eap_aka_determine_identity(sm, data, 1, 0);
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data->pending_id = -1;
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return data;
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}
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#ifdef EAP_SERVER_AKA_PRIME
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static void * eap_aka_prime_init(struct eap_sm *sm)
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{
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struct eap_aka_data *data;
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/* TODO: make ANID configurable; see 3GPP TS 24.302 */
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char *network_name = "WLAN";
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if (sm->eap_sim_db_priv == NULL) {
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wpa_printf(MSG_WARNING, "EAP-AKA: eap_sim_db not configured");
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return NULL;
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}
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data = os_zalloc(sizeof(*data));
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if (data == NULL)
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return NULL;
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data->eap_method = EAP_TYPE_AKA_PRIME;
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data->network_name = os_malloc(os_strlen(network_name));
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if (data->network_name == NULL) {
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os_free(data);
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return NULL;
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}
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data->network_name_len = os_strlen(network_name);
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os_memcpy(data->network_name, network_name, data->network_name_len);
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data->state = IDENTITY;
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eap_aka_determine_identity(sm, data, 1, 0);
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data->pending_id = -1;
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return data;
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}
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#endif /* EAP_SERVER_AKA_PRIME */
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static void eap_aka_reset(struct eap_sm *sm, void *priv)
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{
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struct eap_aka_data *data = priv;
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os_free(data->next_pseudonym);
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os_free(data->next_reauth_id);
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wpabuf_free(data->id_msgs);
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os_free(data->network_name);
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os_free(data);
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}
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static int eap_aka_add_id_msg(struct eap_aka_data *data,
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const struct wpabuf *msg)
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{
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if (msg == NULL)
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return -1;
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if (data->id_msgs == NULL) {
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data->id_msgs = wpabuf_dup(msg);
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return data->id_msgs == NULL ? -1 : 0;
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}
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if (wpabuf_resize(&data->id_msgs, wpabuf_len(msg)) < 0)
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return -1;
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wpabuf_put_buf(data->id_msgs, msg);
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return 0;
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}
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static void eap_aka_add_checkcode(struct eap_aka_data *data,
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struct eap_sim_msg *msg)
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{
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const u8 *addr;
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size_t len;
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u8 hash[SHA256_MAC_LEN];
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wpa_printf(MSG_DEBUG, " AT_CHECKCODE");
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if (data->id_msgs == NULL) {
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/*
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* No EAP-AKA/Identity packets were exchanged - send empty
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* checkcode.
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*/
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eap_sim_msg_add(msg, EAP_SIM_AT_CHECKCODE, 0, NULL, 0);
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return;
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}
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/* Checkcode is SHA1 hash over all EAP-AKA/Identity packets. */
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addr = wpabuf_head(data->id_msgs);
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len = wpabuf_len(data->id_msgs);
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wpa_hexdump(MSG_MSGDUMP, "EAP-AKA: AT_CHECKCODE data", addr, len);
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if (data->eap_method == EAP_TYPE_AKA_PRIME)
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sha256_vector(1, &addr, &len, hash);
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else
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sha1_vector(1, &addr, &len, hash);
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eap_sim_msg_add(msg, EAP_SIM_AT_CHECKCODE, 0, hash,
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data->eap_method == EAP_TYPE_AKA_PRIME ?
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EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN);
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}
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static int eap_aka_verify_checkcode(struct eap_aka_data *data,
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const u8 *checkcode, size_t checkcode_len)
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{
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const u8 *addr;
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size_t len;
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u8 hash[SHA256_MAC_LEN];
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size_t hash_len;
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if (checkcode == NULL)
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return -1;
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if (data->id_msgs == NULL) {
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if (checkcode_len != 0) {
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wpa_printf(MSG_DEBUG, "EAP-AKA: Checkcode from peer "
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"indicates that AKA/Identity messages were "
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"used, but they were not");
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return -1;
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}
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return 0;
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}
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hash_len = data->eap_method == EAP_TYPE_AKA_PRIME ?
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EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN;
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if (checkcode_len != hash_len) {
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wpa_printf(MSG_DEBUG, "EAP-AKA: Checkcode from peer indicates "
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"that AKA/Identity message were not used, but they "
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"were");
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return -1;
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}
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/* Checkcode is SHA1 hash over all EAP-AKA/Identity packets. */
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addr = wpabuf_head(data->id_msgs);
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len = wpabuf_len(data->id_msgs);
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if (data->eap_method == EAP_TYPE_AKA_PRIME)
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sha256_vector(1, &addr, &len, hash);
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else
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sha1_vector(1, &addr, &len, hash);
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if (os_memcmp(hash, checkcode, hash_len) != 0) {
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wpa_printf(MSG_DEBUG, "EAP-AKA: Mismatch in AT_CHECKCODE");
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return -1;
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}
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return 0;
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}
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static struct wpabuf * eap_aka_build_identity(struct eap_sm *sm,
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struct eap_aka_data *data, u8 id)
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{
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struct eap_sim_msg *msg;
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struct wpabuf *buf;
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wpa_printf(MSG_DEBUG, "EAP-AKA: Generating Identity");
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msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, data->eap_method,
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EAP_AKA_SUBTYPE_IDENTITY);
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if (eap_sim_db_identity_known(sm->eap_sim_db_priv, sm->identity,
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sm->identity_len)) {
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wpa_printf(MSG_DEBUG, " AT_PERMANENT_ID_REQ");
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eap_sim_msg_add(msg, EAP_SIM_AT_PERMANENT_ID_REQ, 0, NULL, 0);
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} else {
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/*
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* RFC 4187, Chap. 4.1.4 recommends that identity from EAP is
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* ignored and the AKA/Identity is used to request the
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* identity.
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*/
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wpa_printf(MSG_DEBUG, " AT_ANY_ID_REQ");
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eap_sim_msg_add(msg, EAP_SIM_AT_ANY_ID_REQ, 0, NULL, 0);
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}
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buf = eap_sim_msg_finish(msg, NULL, NULL, 0);
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if (eap_aka_add_id_msg(data, buf) < 0) {
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wpabuf_free(buf);
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return NULL;
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}
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data->pending_id = id;
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return buf;
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}
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static int eap_aka_build_encr(struct eap_sm *sm, struct eap_aka_data *data,
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struct eap_sim_msg *msg, u16 counter,
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const u8 *nonce_s)
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{
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os_free(data->next_pseudonym);
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data->next_pseudonym =
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eap_sim_db_get_next_pseudonym(sm->eap_sim_db_priv, 1);
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os_free(data->next_reauth_id);
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if (data->counter <= EAP_AKA_MAX_FAST_REAUTHS) {
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data->next_reauth_id =
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eap_sim_db_get_next_reauth_id(sm->eap_sim_db_priv, 1);
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} else {
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wpa_printf(MSG_DEBUG, "EAP-AKA: Max fast re-authentication "
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"count exceeded - force full authentication");
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data->next_reauth_id = NULL;
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}
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if (data->next_pseudonym == NULL && data->next_reauth_id == NULL &&
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counter == 0 && nonce_s == NULL)
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return 0;
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wpa_printf(MSG_DEBUG, " AT_IV");
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wpa_printf(MSG_DEBUG, " AT_ENCR_DATA");
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eap_sim_msg_add_encr_start(msg, EAP_SIM_AT_IV, EAP_SIM_AT_ENCR_DATA);
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if (counter > 0) {
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wpa_printf(MSG_DEBUG, " *AT_COUNTER (%u)", counter);
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eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER, counter, NULL, 0);
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}
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if (nonce_s) {
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wpa_printf(MSG_DEBUG, " *AT_NONCE_S");
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eap_sim_msg_add(msg, EAP_SIM_AT_NONCE_S, 0, nonce_s,
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EAP_SIM_NONCE_S_LEN);
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}
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if (data->next_pseudonym) {
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wpa_printf(MSG_DEBUG, " *AT_NEXT_PSEUDONYM (%s)",
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data->next_pseudonym);
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eap_sim_msg_add(msg, EAP_SIM_AT_NEXT_PSEUDONYM,
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os_strlen(data->next_pseudonym),
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(u8 *) data->next_pseudonym,
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os_strlen(data->next_pseudonym));
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}
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if (data->next_reauth_id) {
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wpa_printf(MSG_DEBUG, " *AT_NEXT_REAUTH_ID (%s)",
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data->next_reauth_id);
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eap_sim_msg_add(msg, EAP_SIM_AT_NEXT_REAUTH_ID,
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os_strlen(data->next_reauth_id),
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(u8 *) data->next_reauth_id,
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os_strlen(data->next_reauth_id));
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}
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if (eap_sim_msg_add_encr_end(msg, data->k_encr, EAP_SIM_AT_PADDING)) {
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wpa_printf(MSG_WARNING, "EAP-AKA: Failed to encrypt "
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"AT_ENCR_DATA");
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return -1;
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}
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return 0;
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}
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static struct wpabuf * eap_aka_build_challenge(struct eap_sm *sm,
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struct eap_aka_data *data,
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u8 id)
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{
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struct eap_sim_msg *msg;
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wpa_printf(MSG_DEBUG, "EAP-AKA: Generating Challenge");
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msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, data->eap_method,
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EAP_AKA_SUBTYPE_CHALLENGE);
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wpa_printf(MSG_DEBUG, " AT_RAND");
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eap_sim_msg_add(msg, EAP_SIM_AT_RAND, 0, data->rand, EAP_AKA_RAND_LEN);
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wpa_printf(MSG_DEBUG, " AT_AUTN");
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eap_sim_msg_add(msg, EAP_SIM_AT_AUTN, 0, data->autn, EAP_AKA_AUTN_LEN);
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if (data->eap_method == EAP_TYPE_AKA_PRIME) {
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if (data->kdf) {
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/* Add the selected KDF into the beginning */
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wpa_printf(MSG_DEBUG, " AT_KDF");
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eap_sim_msg_add(msg, EAP_SIM_AT_KDF, data->kdf,
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NULL, 0);
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}
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wpa_printf(MSG_DEBUG, " AT_KDF");
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eap_sim_msg_add(msg, EAP_SIM_AT_KDF, EAP_AKA_PRIME_KDF,
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NULL, 0);
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wpa_printf(MSG_DEBUG, " AT_KDF_INPUT");
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eap_sim_msg_add(msg, EAP_SIM_AT_KDF_INPUT,
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data->network_name_len,
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data->network_name, data->network_name_len);
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}
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if (eap_aka_build_encr(sm, data, msg, 0, NULL)) {
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eap_sim_msg_free(msg);
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return NULL;
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}
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eap_aka_add_checkcode(data, msg);
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if (sm->eap_sim_aka_result_ind) {
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wpa_printf(MSG_DEBUG, " AT_RESULT_IND");
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eap_sim_msg_add(msg, EAP_SIM_AT_RESULT_IND, 0, NULL, 0);
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}
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#ifdef EAP_SERVER_AKA_PRIME
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if (data->eap_method == EAP_TYPE_AKA) {
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u16 flags = 0;
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int i;
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int aka_prime_preferred = 0;
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i = 0;
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while (sm->user && i < EAP_MAX_METHODS &&
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(sm->user->methods[i].vendor != EAP_VENDOR_IETF ||
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sm->user->methods[i].method != EAP_TYPE_NONE)) {
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if (sm->user->methods[i].vendor == EAP_VENDOR_IETF) {
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if (sm->user->methods[i].method ==
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EAP_TYPE_AKA)
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break;
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if (sm->user->methods[i].method ==
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EAP_TYPE_AKA_PRIME) {
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aka_prime_preferred = 1;
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break;
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}
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}
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i++;
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}
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if (aka_prime_preferred)
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flags |= EAP_AKA_BIDDING_FLAG_D;
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eap_sim_msg_add(msg, EAP_SIM_AT_BIDDING, flags, NULL, 0);
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}
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#endif /* EAP_SERVER_AKA_PRIME */
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wpa_printf(MSG_DEBUG, " AT_MAC");
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eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC);
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return eap_sim_msg_finish(msg, data->k_aut, NULL, 0);
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}
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static struct wpabuf * eap_aka_build_reauth(struct eap_sm *sm,
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struct eap_aka_data *data, u8 id)
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{
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struct eap_sim_msg *msg;
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wpa_printf(MSG_DEBUG, "EAP-AKA: Generating Re-authentication");
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if (os_get_random(data->nonce_s, EAP_SIM_NONCE_S_LEN))
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return NULL;
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wpa_hexdump_key(MSG_MSGDUMP, "EAP-AKA: NONCE_S",
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data->nonce_s, EAP_SIM_NONCE_S_LEN);
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if (data->eap_method == EAP_TYPE_AKA_PRIME) {
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eap_aka_prime_derive_keys_reauth(data->k_re, data->counter,
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sm->identity,
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sm->identity_len,
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data->nonce_s,
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data->msk, data->emsk);
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} else {
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eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut,
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data->msk, data->emsk);
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eap_sim_derive_keys_reauth(data->counter, sm->identity,
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sm->identity_len, data->nonce_s,
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data->mk, data->msk, data->emsk);
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}
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msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, data->eap_method,
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EAP_AKA_SUBTYPE_REAUTHENTICATION);
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if (eap_aka_build_encr(sm, data, msg, data->counter, data->nonce_s)) {
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eap_sim_msg_free(msg);
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return NULL;
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}
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|
eap_aka_add_checkcode(data, msg);
|
|
|
|
if (sm->eap_sim_aka_result_ind) {
|
|
wpa_printf(MSG_DEBUG, " AT_RESULT_IND");
|
|
eap_sim_msg_add(msg, EAP_SIM_AT_RESULT_IND, 0, NULL, 0);
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG, " AT_MAC");
|
|
eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC);
|
|
return eap_sim_msg_finish(msg, data->k_aut, NULL, 0);
|
|
}
|
|
|
|
|
|
static struct wpabuf * eap_aka_build_notification(struct eap_sm *sm,
|
|
struct eap_aka_data *data,
|
|
u8 id)
|
|
{
|
|
struct eap_sim_msg *msg;
|
|
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Generating Notification");
|
|
msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, data->eap_method,
|
|
EAP_AKA_SUBTYPE_NOTIFICATION);
|
|
wpa_printf(MSG_DEBUG, " AT_NOTIFICATION (%d)", data->notification);
|
|
eap_sim_msg_add(msg, EAP_SIM_AT_NOTIFICATION, data->notification,
|
|
NULL, 0);
|
|
if (data->use_result_ind) {
|
|
if (data->reauth) {
|
|
wpa_printf(MSG_DEBUG, " AT_IV");
|
|
wpa_printf(MSG_DEBUG, " AT_ENCR_DATA");
|
|
eap_sim_msg_add_encr_start(msg, EAP_SIM_AT_IV,
|
|
EAP_SIM_AT_ENCR_DATA);
|
|
wpa_printf(MSG_DEBUG, " *AT_COUNTER (%u)",
|
|
data->counter);
|
|
eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER, data->counter,
|
|
NULL, 0);
|
|
|
|
if (eap_sim_msg_add_encr_end(msg, data->k_encr,
|
|
EAP_SIM_AT_PADDING)) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA: Failed to "
|
|
"encrypt AT_ENCR_DATA");
|
|
eap_sim_msg_free(msg);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG, " AT_MAC");
|
|
eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC);
|
|
}
|
|
return eap_sim_msg_finish(msg, data->k_aut, NULL, 0);
|
|
}
|
|
|
|
|
|
static struct wpabuf * eap_aka_buildReq(struct eap_sm *sm, void *priv, u8 id)
|
|
{
|
|
struct eap_aka_data *data = priv;
|
|
|
|
data->auts_reported = 0;
|
|
switch (data->state) {
|
|
case IDENTITY:
|
|
return eap_aka_build_identity(sm, data, id);
|
|
case CHALLENGE:
|
|
return eap_aka_build_challenge(sm, data, id);
|
|
case REAUTH:
|
|
return eap_aka_build_reauth(sm, data, id);
|
|
case NOTIFICATION:
|
|
return eap_aka_build_notification(sm, data, id);
|
|
default:
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Unknown state %d in "
|
|
"buildReq", data->state);
|
|
break;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static Boolean eap_aka_check(struct eap_sm *sm, void *priv,
|
|
struct wpabuf *respData)
|
|
{
|
|
struct eap_aka_data *data = priv;
|
|
const u8 *pos;
|
|
size_t len;
|
|
|
|
pos = eap_hdr_validate(EAP_VENDOR_IETF, data->eap_method, respData,
|
|
&len);
|
|
if (pos == NULL || len < 3) {
|
|
wpa_printf(MSG_INFO, "EAP-AKA: Invalid frame");
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static Boolean eap_aka_subtype_ok(struct eap_aka_data *data, u8 subtype)
|
|
{
|
|
if (subtype == EAP_AKA_SUBTYPE_CLIENT_ERROR ||
|
|
subtype == EAP_AKA_SUBTYPE_AUTHENTICATION_REJECT)
|
|
return FALSE;
|
|
|
|
switch (data->state) {
|
|
case IDENTITY:
|
|
if (subtype != EAP_AKA_SUBTYPE_IDENTITY) {
|
|
wpa_printf(MSG_INFO, "EAP-AKA: Unexpected response "
|
|
"subtype %d", subtype);
|
|
return TRUE;
|
|
}
|
|
break;
|
|
case CHALLENGE:
|
|
if (subtype != EAP_AKA_SUBTYPE_CHALLENGE &&
|
|
subtype != EAP_AKA_SUBTYPE_SYNCHRONIZATION_FAILURE) {
|
|
wpa_printf(MSG_INFO, "EAP-AKA: Unexpected response "
|
|
"subtype %d", subtype);
|
|
return TRUE;
|
|
}
|
|
break;
|
|
case REAUTH:
|
|
if (subtype != EAP_AKA_SUBTYPE_REAUTHENTICATION) {
|
|
wpa_printf(MSG_INFO, "EAP-AKA: Unexpected response "
|
|
"subtype %d", subtype);
|
|
return TRUE;
|
|
}
|
|
break;
|
|
case NOTIFICATION:
|
|
if (subtype != EAP_AKA_SUBTYPE_NOTIFICATION) {
|
|
wpa_printf(MSG_INFO, "EAP-AKA: Unexpected response "
|
|
"subtype %d", subtype);
|
|
return TRUE;
|
|
}
|
|
break;
|
|
default:
|
|
wpa_printf(MSG_INFO, "EAP-AKA: Unexpected state (%d) for "
|
|
"processing a response", data->state);
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static void eap_aka_determine_identity(struct eap_sm *sm,
|
|
struct eap_aka_data *data,
|
|
int before_identity, int after_reauth)
|
|
{
|
|
const u8 *identity;
|
|
size_t identity_len;
|
|
int res;
|
|
|
|
identity = NULL;
|
|
identity_len = 0;
|
|
|
|
if (after_reauth && data->reauth) {
|
|
identity = data->reauth->identity;
|
|
identity_len = data->reauth->identity_len;
|
|
} else if (sm->identity && sm->identity_len > 0 &&
|
|
sm->identity[0] == EAP_AKA_PERMANENT_PREFIX) {
|
|
identity = sm->identity;
|
|
identity_len = sm->identity_len;
|
|
} else {
|
|
identity = eap_sim_db_get_permanent(sm->eap_sim_db_priv,
|
|
sm->identity,
|
|
sm->identity_len,
|
|
&identity_len);
|
|
if (identity == NULL) {
|
|
data->reauth = eap_sim_db_get_reauth_entry(
|
|
sm->eap_sim_db_priv, sm->identity,
|
|
sm->identity_len);
|
|
if (data->reauth &&
|
|
data->reauth->aka_prime !=
|
|
(data->eap_method == EAP_TYPE_AKA_PRIME)) {
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Reauth data "
|
|
"was for different AKA version");
|
|
data->reauth = NULL;
|
|
}
|
|
if (data->reauth) {
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Using fast "
|
|
"re-authentication");
|
|
identity = data->reauth->identity;
|
|
identity_len = data->reauth->identity_len;
|
|
data->counter = data->reauth->counter;
|
|
if (data->eap_method == EAP_TYPE_AKA_PRIME) {
|
|
os_memcpy(data->k_encr,
|
|
data->reauth->k_encr,
|
|
EAP_SIM_K_ENCR_LEN);
|
|
os_memcpy(data->k_aut,
|
|
data->reauth->k_aut,
|
|
EAP_AKA_PRIME_K_AUT_LEN);
|
|
os_memcpy(data->k_re,
|
|
data->reauth->k_re,
|
|
EAP_AKA_PRIME_K_RE_LEN);
|
|
} else {
|
|
os_memcpy(data->mk, data->reauth->mk,
|
|
EAP_SIM_MK_LEN);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (identity == NULL ||
|
|
eap_sim_db_identity_known(sm->eap_sim_db_priv, sm->identity,
|
|
sm->identity_len) < 0) {
|
|
if (before_identity) {
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Permanent user name "
|
|
"not known - send AKA-Identity request");
|
|
eap_aka_state(data, IDENTITY);
|
|
return;
|
|
} else {
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Unknown whether the "
|
|
"permanent user name is known; try to use "
|
|
"it");
|
|
/* eap_sim_db_get_aka_auth() will report failure, if
|
|
* this identity is not known. */
|
|
}
|
|
}
|
|
|
|
wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA: Identity",
|
|
identity, identity_len);
|
|
|
|
if (!after_reauth && data->reauth) {
|
|
eap_aka_state(data, REAUTH);
|
|
return;
|
|
}
|
|
|
|
res = eap_sim_db_get_aka_auth(sm->eap_sim_db_priv, identity,
|
|
identity_len, data->rand, data->autn,
|
|
data->ik, data->ck, data->res,
|
|
&data->res_len, sm);
|
|
if (res == EAP_SIM_DB_PENDING) {
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: AKA authentication data "
|
|
"not yet available - pending request");
|
|
sm->method_pending = METHOD_PENDING_WAIT;
|
|
return;
|
|
}
|
|
|
|
#ifdef EAP_SERVER_AKA_PRIME
|
|
if (data->eap_method == EAP_TYPE_AKA_PRIME) {
|
|
/* Note: AUTN = (SQN ^ AK) || AMF || MAC which gives us the
|
|
* needed 6-octet SQN ^AK for CK',IK' derivation */
|
|
eap_aka_prime_derive_ck_ik_prime(data->ck, data->ik,
|
|
data->autn,
|
|
data->network_name,
|
|
data->network_name_len);
|
|
}
|
|
#endif /* EAP_SERVER_AKA_PRIME */
|
|
|
|
data->reauth = NULL;
|
|
data->counter = 0; /* reset re-auth counter since this is full auth */
|
|
|
|
if (res != 0) {
|
|
wpa_printf(MSG_INFO, "EAP-AKA: Failed to get AKA "
|
|
"authentication data for the peer");
|
|
data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
return;
|
|
}
|
|
if (sm->method_pending == METHOD_PENDING_WAIT) {
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: AKA authentication data "
|
|
"available - abort pending wait");
|
|
sm->method_pending = METHOD_PENDING_NONE;
|
|
}
|
|
|
|
identity_len = sm->identity_len;
|
|
while (identity_len > 0 && sm->identity[identity_len - 1] == '\0') {
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Workaround - drop last null "
|
|
"character from identity");
|
|
identity_len--;
|
|
}
|
|
wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA: Identity for MK derivation",
|
|
sm->identity, identity_len);
|
|
|
|
if (data->eap_method == EAP_TYPE_AKA_PRIME) {
|
|
eap_aka_prime_derive_keys(identity, identity_len, data->ik,
|
|
data->ck, data->k_encr, data->k_aut,
|
|
data->k_re, data->msk, data->emsk);
|
|
} else {
|
|
eap_aka_derive_mk(sm->identity, identity_len, data->ik,
|
|
data->ck, data->mk);
|
|
eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut,
|
|
data->msk, data->emsk);
|
|
}
|
|
|
|
eap_aka_state(data, CHALLENGE);
|
|
}
|
|
|
|
|
|
static void eap_aka_process_identity(struct eap_sm *sm,
|
|
struct eap_aka_data *data,
|
|
struct wpabuf *respData,
|
|
struct eap_sim_attrs *attr)
|
|
{
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Processing Identity");
|
|
|
|
if (attr->mac || attr->iv || attr->encr_data) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA: Unexpected attribute "
|
|
"received in EAP-Response/AKA-Identity");
|
|
data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
return;
|
|
}
|
|
|
|
if (attr->identity) {
|
|
os_free(sm->identity);
|
|
sm->identity = os_malloc(attr->identity_len);
|
|
if (sm->identity) {
|
|
os_memcpy(sm->identity, attr->identity,
|
|
attr->identity_len);
|
|
sm->identity_len = attr->identity_len;
|
|
}
|
|
}
|
|
|
|
eap_aka_determine_identity(sm, data, 0, 0);
|
|
if (eap_get_id(respData) == data->pending_id) {
|
|
data->pending_id = -1;
|
|
eap_aka_add_id_msg(data, respData);
|
|
}
|
|
}
|
|
|
|
|
|
static int eap_aka_verify_mac(struct eap_aka_data *data,
|
|
const struct wpabuf *req,
|
|
const u8 *mac, const u8 *extra,
|
|
size_t extra_len)
|
|
{
|
|
if (data->eap_method == EAP_TYPE_AKA_PRIME)
|
|
return eap_sim_verify_mac_sha256(data->k_aut, req, mac, extra,
|
|
extra_len);
|
|
return eap_sim_verify_mac(data->k_aut, req, mac, extra, extra_len);
|
|
}
|
|
|
|
|
|
static void eap_aka_process_challenge(struct eap_sm *sm,
|
|
struct eap_aka_data *data,
|
|
struct wpabuf *respData,
|
|
struct eap_sim_attrs *attr)
|
|
{
|
|
const u8 *identity;
|
|
size_t identity_len;
|
|
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Processing Challenge");
|
|
|
|
#ifdef EAP_SERVER_AKA_PRIME
|
|
#if 0
|
|
/* KDF negotiation; to be enabled only after more than one KDF is
|
|
* supported */
|
|
if (data->eap_method == EAP_TYPE_AKA_PRIME &&
|
|
attr->kdf_count == 1 && attr->mac == NULL) {
|
|
if (attr->kdf[0] != EAP_AKA_PRIME_KDF) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA': Peer selected "
|
|
"unknown KDF");
|
|
data->notification =
|
|
EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
return;
|
|
}
|
|
|
|
data->kdf = attr->kdf[0];
|
|
|
|
/* Allow negotiation to continue with the selected KDF by
|
|
* sending another Challenge message */
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA': KDF %d selected", data->kdf);
|
|
return;
|
|
}
|
|
#endif
|
|
#endif /* EAP_SERVER_AKA_PRIME */
|
|
|
|
if (attr->checkcode &&
|
|
eap_aka_verify_checkcode(data, attr->checkcode,
|
|
attr->checkcode_len)) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA: Invalid AT_CHECKCODE in the "
|
|
"message");
|
|
data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
return;
|
|
}
|
|
if (attr->mac == NULL ||
|
|
eap_aka_verify_mac(data, respData, attr->mac, NULL, 0)) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message "
|
|
"did not include valid AT_MAC");
|
|
data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* AT_RES is padded, so verify that there is enough room for RES and
|
|
* that the RES length in bits matches with the expected RES.
|
|
*/
|
|
if (attr->res == NULL || attr->res_len < data->res_len ||
|
|
attr->res_len_bits != data->res_len * 8 ||
|
|
os_memcmp(attr->res, data->res, data->res_len) != 0) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message did not "
|
|
"include valid AT_RES (attr len=%lu, res len=%lu "
|
|
"bits, expected %lu bits)",
|
|
(unsigned long) attr->res_len,
|
|
(unsigned long) attr->res_len_bits,
|
|
(unsigned long) data->res_len * 8);
|
|
data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
return;
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Challenge response includes the "
|
|
"correct AT_MAC");
|
|
if (sm->eap_sim_aka_result_ind && attr->result_ind) {
|
|
data->use_result_ind = 1;
|
|
data->notification = EAP_SIM_SUCCESS;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
} else
|
|
eap_aka_state(data, SUCCESS);
|
|
|
|
identity = eap_sim_db_get_permanent(sm->eap_sim_db_priv, sm->identity,
|
|
sm->identity_len, &identity_len);
|
|
if (identity == NULL) {
|
|
identity = sm->identity;
|
|
identity_len = sm->identity_len;
|
|
}
|
|
|
|
if (data->next_pseudonym) {
|
|
eap_sim_db_add_pseudonym(sm->eap_sim_db_priv, identity,
|
|
identity_len,
|
|
data->next_pseudonym);
|
|
data->next_pseudonym = NULL;
|
|
}
|
|
if (data->next_reauth_id) {
|
|
if (data->eap_method == EAP_TYPE_AKA_PRIME) {
|
|
#ifdef EAP_SERVER_AKA_PRIME
|
|
eap_sim_db_add_reauth_prime(sm->eap_sim_db_priv,
|
|
identity,
|
|
identity_len,
|
|
data->next_reauth_id,
|
|
data->counter + 1,
|
|
data->k_encr, data->k_aut,
|
|
data->k_re);
|
|
#endif /* EAP_SERVER_AKA_PRIME */
|
|
} else {
|
|
eap_sim_db_add_reauth(sm->eap_sim_db_priv, identity,
|
|
identity_len,
|
|
data->next_reauth_id,
|
|
data->counter + 1,
|
|
data->mk);
|
|
}
|
|
data->next_reauth_id = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
static void eap_aka_process_sync_failure(struct eap_sm *sm,
|
|
struct eap_aka_data *data,
|
|
struct wpabuf *respData,
|
|
struct eap_sim_attrs *attr)
|
|
{
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Processing Synchronization-Failure");
|
|
|
|
if (attr->auts == NULL) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA: Synchronization-Failure "
|
|
"message did not include valid AT_AUTS");
|
|
data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
return;
|
|
}
|
|
|
|
/* Avoid re-reporting AUTS when processing pending EAP packet by
|
|
* maintaining a local flag stating whether this AUTS has already been
|
|
* reported. */
|
|
if (!data->auts_reported &&
|
|
eap_sim_db_resynchronize(sm->eap_sim_db_priv, sm->identity,
|
|
sm->identity_len, attr->auts,
|
|
data->rand)) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA: Resynchronization failed");
|
|
data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
return;
|
|
}
|
|
data->auts_reported = 1;
|
|
|
|
/* Try again after resynchronization */
|
|
eap_aka_determine_identity(sm, data, 0, 0);
|
|
}
|
|
|
|
|
|
static void eap_aka_process_reauth(struct eap_sm *sm,
|
|
struct eap_aka_data *data,
|
|
struct wpabuf *respData,
|
|
struct eap_sim_attrs *attr)
|
|
{
|
|
struct eap_sim_attrs eattr;
|
|
u8 *decrypted = NULL;
|
|
const u8 *identity, *id2;
|
|
size_t identity_len, id2_len;
|
|
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Processing Reauthentication");
|
|
|
|
if (attr->mac == NULL ||
|
|
eap_aka_verify_mac(data, respData, attr->mac, data->nonce_s,
|
|
EAP_SIM_NONCE_S_LEN)) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA: Re-authentication message "
|
|
"did not include valid AT_MAC");
|
|
goto fail;
|
|
}
|
|
|
|
if (attr->encr_data == NULL || attr->iv == NULL) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA: Reauthentication "
|
|
"message did not include encrypted data");
|
|
goto fail;
|
|
}
|
|
|
|
decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data,
|
|
attr->encr_data_len, attr->iv, &eattr,
|
|
0);
|
|
if (decrypted == NULL) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA: Failed to parse encrypted "
|
|
"data from reauthentication message");
|
|
goto fail;
|
|
}
|
|
|
|
if (eattr.counter != data->counter) {
|
|
wpa_printf(MSG_WARNING, "EAP-AKA: Re-authentication message "
|
|
"used incorrect counter %u, expected %u",
|
|
eattr.counter, data->counter);
|
|
goto fail;
|
|
}
|
|
os_free(decrypted);
|
|
decrypted = NULL;
|
|
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Re-authentication response includes "
|
|
"the correct AT_MAC");
|
|
|
|
if (eattr.counter_too_small) {
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Re-authentication response "
|
|
"included AT_COUNTER_TOO_SMALL - starting full "
|
|
"authentication");
|
|
eap_aka_determine_identity(sm, data, 0, 1);
|
|
return;
|
|
}
|
|
|
|
if (sm->eap_sim_aka_result_ind && attr->result_ind) {
|
|
data->use_result_ind = 1;
|
|
data->notification = EAP_SIM_SUCCESS;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
} else
|
|
eap_aka_state(data, SUCCESS);
|
|
|
|
if (data->reauth) {
|
|
identity = data->reauth->identity;
|
|
identity_len = data->reauth->identity_len;
|
|
} else {
|
|
identity = sm->identity;
|
|
identity_len = sm->identity_len;
|
|
}
|
|
|
|
id2 = eap_sim_db_get_permanent(sm->eap_sim_db_priv, identity,
|
|
identity_len, &id2_len);
|
|
if (id2) {
|
|
identity = id2;
|
|
identity_len = id2_len;
|
|
}
|
|
|
|
if (data->next_pseudonym) {
|
|
eap_sim_db_add_pseudonym(sm->eap_sim_db_priv, identity,
|
|
identity_len, data->next_pseudonym);
|
|
data->next_pseudonym = NULL;
|
|
}
|
|
if (data->next_reauth_id) {
|
|
if (data->eap_method == EAP_TYPE_AKA_PRIME) {
|
|
#ifdef EAP_SERVER_AKA_PRIME
|
|
eap_sim_db_add_reauth_prime(sm->eap_sim_db_priv,
|
|
identity,
|
|
identity_len,
|
|
data->next_reauth_id,
|
|
data->counter + 1,
|
|
data->k_encr, data->k_aut,
|
|
data->k_re);
|
|
#endif /* EAP_SERVER_AKA_PRIME */
|
|
} else {
|
|
eap_sim_db_add_reauth(sm->eap_sim_db_priv, identity,
|
|
identity_len,
|
|
data->next_reauth_id,
|
|
data->counter + 1,
|
|
data->mk);
|
|
}
|
|
data->next_reauth_id = NULL;
|
|
} else {
|
|
eap_sim_db_remove_reauth(sm->eap_sim_db_priv, data->reauth);
|
|
data->reauth = NULL;
|
|
}
|
|
|
|
return;
|
|
|
|
fail:
|
|
data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
eap_sim_db_remove_reauth(sm->eap_sim_db_priv, data->reauth);
|
|
data->reauth = NULL;
|
|
os_free(decrypted);
|
|
}
|
|
|
|
|
|
static void eap_aka_process_client_error(struct eap_sm *sm,
|
|
struct eap_aka_data *data,
|
|
struct wpabuf *respData,
|
|
struct eap_sim_attrs *attr)
|
|
{
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Client reported error %d",
|
|
attr->client_error_code);
|
|
if (data->notification == EAP_SIM_SUCCESS && data->use_result_ind)
|
|
eap_aka_state(data, SUCCESS);
|
|
else
|
|
eap_aka_state(data, FAILURE);
|
|
}
|
|
|
|
|
|
static void eap_aka_process_authentication_reject(
|
|
struct eap_sm *sm, struct eap_aka_data *data,
|
|
struct wpabuf *respData, struct eap_sim_attrs *attr)
|
|
{
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Client rejected authentication");
|
|
eap_aka_state(data, FAILURE);
|
|
}
|
|
|
|
|
|
static void eap_aka_process_notification(struct eap_sm *sm,
|
|
struct eap_aka_data *data,
|
|
struct wpabuf *respData,
|
|
struct eap_sim_attrs *attr)
|
|
{
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Client replied to notification");
|
|
if (data->notification == EAP_SIM_SUCCESS && data->use_result_ind)
|
|
eap_aka_state(data, SUCCESS);
|
|
else
|
|
eap_aka_state(data, FAILURE);
|
|
}
|
|
|
|
|
|
static void eap_aka_process(struct eap_sm *sm, void *priv,
|
|
struct wpabuf *respData)
|
|
{
|
|
struct eap_aka_data *data = priv;
|
|
const u8 *pos, *end;
|
|
u8 subtype;
|
|
size_t len;
|
|
struct eap_sim_attrs attr;
|
|
|
|
pos = eap_hdr_validate(EAP_VENDOR_IETF, data->eap_method, respData,
|
|
&len);
|
|
if (pos == NULL || len < 3)
|
|
return;
|
|
|
|
end = pos + len;
|
|
subtype = *pos;
|
|
pos += 3;
|
|
|
|
if (eap_aka_subtype_ok(data, subtype)) {
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Unrecognized or unexpected "
|
|
"EAP-AKA Subtype in EAP Response");
|
|
data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
return;
|
|
}
|
|
|
|
if (eap_sim_parse_attr(pos, end, &attr,
|
|
data->eap_method == EAP_TYPE_AKA_PRIME ? 2 : 1,
|
|
0)) {
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Failed to parse attributes");
|
|
data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
|
|
eap_aka_state(data, NOTIFICATION);
|
|
return;
|
|
}
|
|
|
|
if (subtype == EAP_AKA_SUBTYPE_CLIENT_ERROR) {
|
|
eap_aka_process_client_error(sm, data, respData, &attr);
|
|
return;
|
|
}
|
|
|
|
if (subtype == EAP_AKA_SUBTYPE_AUTHENTICATION_REJECT) {
|
|
eap_aka_process_authentication_reject(sm, data, respData,
|
|
&attr);
|
|
return;
|
|
}
|
|
|
|
switch (data->state) {
|
|
case IDENTITY:
|
|
eap_aka_process_identity(sm, data, respData, &attr);
|
|
break;
|
|
case CHALLENGE:
|
|
if (subtype == EAP_AKA_SUBTYPE_SYNCHRONIZATION_FAILURE) {
|
|
eap_aka_process_sync_failure(sm, data, respData,
|
|
&attr);
|
|
} else {
|
|
eap_aka_process_challenge(sm, data, respData, &attr);
|
|
}
|
|
break;
|
|
case REAUTH:
|
|
eap_aka_process_reauth(sm, data, respData, &attr);
|
|
break;
|
|
case NOTIFICATION:
|
|
eap_aka_process_notification(sm, data, respData, &attr);
|
|
break;
|
|
default:
|
|
wpa_printf(MSG_DEBUG, "EAP-AKA: Unknown state %d in "
|
|
"process", data->state);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static Boolean eap_aka_isDone(struct eap_sm *sm, void *priv)
|
|
{
|
|
struct eap_aka_data *data = priv;
|
|
return data->state == SUCCESS || data->state == FAILURE;
|
|
}
|
|
|
|
|
|
static u8 * eap_aka_getKey(struct eap_sm *sm, void *priv, size_t *len)
|
|
{
|
|
struct eap_aka_data *data = priv;
|
|
u8 *key;
|
|
|
|
if (data->state != SUCCESS)
|
|
return NULL;
|
|
|
|
key = os_malloc(EAP_SIM_KEYING_DATA_LEN);
|
|
if (key == NULL)
|
|
return NULL;
|
|
os_memcpy(key, data->msk, EAP_SIM_KEYING_DATA_LEN);
|
|
*len = EAP_SIM_KEYING_DATA_LEN;
|
|
return key;
|
|
}
|
|
|
|
|
|
static u8 * eap_aka_get_emsk(struct eap_sm *sm, void *priv, size_t *len)
|
|
{
|
|
struct eap_aka_data *data = priv;
|
|
u8 *key;
|
|
|
|
if (data->state != SUCCESS)
|
|
return NULL;
|
|
|
|
key = os_malloc(EAP_EMSK_LEN);
|
|
if (key == NULL)
|
|
return NULL;
|
|
os_memcpy(key, data->emsk, EAP_EMSK_LEN);
|
|
*len = EAP_EMSK_LEN;
|
|
return key;
|
|
}
|
|
|
|
|
|
static Boolean eap_aka_isSuccess(struct eap_sm *sm, void *priv)
|
|
{
|
|
struct eap_aka_data *data = priv;
|
|
return data->state == SUCCESS;
|
|
}
|
|
|
|
|
|
int eap_server_aka_register(void)
|
|
{
|
|
struct eap_method *eap;
|
|
int ret;
|
|
|
|
eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
|
|
EAP_VENDOR_IETF, EAP_TYPE_AKA, "AKA");
|
|
if (eap == NULL)
|
|
return -1;
|
|
|
|
eap->init = eap_aka_init;
|
|
eap->reset = eap_aka_reset;
|
|
eap->buildReq = eap_aka_buildReq;
|
|
eap->check = eap_aka_check;
|
|
eap->process = eap_aka_process;
|
|
eap->isDone = eap_aka_isDone;
|
|
eap->getKey = eap_aka_getKey;
|
|
eap->isSuccess = eap_aka_isSuccess;
|
|
eap->get_emsk = eap_aka_get_emsk;
|
|
|
|
ret = eap_server_method_register(eap);
|
|
if (ret)
|
|
eap_server_method_free(eap);
|
|
return ret;
|
|
}
|
|
|
|
|
|
#ifdef EAP_SERVER_AKA_PRIME
|
|
int eap_server_aka_prime_register(void)
|
|
{
|
|
struct eap_method *eap;
|
|
int ret;
|
|
|
|
eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
|
|
EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME,
|
|
"AKA'");
|
|
if (eap == NULL)
|
|
return -1;
|
|
|
|
eap->init = eap_aka_prime_init;
|
|
eap->reset = eap_aka_reset;
|
|
eap->buildReq = eap_aka_buildReq;
|
|
eap->check = eap_aka_check;
|
|
eap->process = eap_aka_process;
|
|
eap->isDone = eap_aka_isDone;
|
|
eap->getKey = eap_aka_getKey;
|
|
eap->isSuccess = eap_aka_isSuccess;
|
|
eap->get_emsk = eap_aka_get_emsk;
|
|
|
|
ret = eap_server_method_register(eap);
|
|
if (ret)
|
|
eap_server_method_free(eap);
|
|
|
|
return ret;
|
|
}
|
|
#endif /* EAP_SERVER_AKA_PRIME */
|