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authorJouni Malinen <j@w1.fi>2008-12-07 17:24:56 (GMT)
committerJouni Malinen <j@w1.fi>2008-12-07 17:24:56 (GMT)
commita9d1364c5fd29a4afe2b45443c6e539ee6cc1e4e (patch)
treec7a0743c2fa2a1d0b4f82edd5eb696abc20a8342 /src/eap_peer
parent01b05694372c718f88d921785f8f1133e9992c36 (diff)
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Merged EAP-AKA' into eap_aka.c and added it to defconfig/ChangeLog
Diffstat (limited to 'src/eap_peer')
-rw-r--r--src/eap_peer/eap_aka.c302
-rw-r--r--src/eap_peer/eap_aka_prime.c1373
2 files changed, 263 insertions, 1412 deletions
diff --git a/src/eap_peer/eap_aka.c b/src/eap_peer/eap_aka.c
index d8f07f6..ff68dfb 100644
--- a/src/eap_peer/eap_aka.c
+++ b/src/eap_peer/eap_aka.c
@@ -1,6 +1,6 @@
/*
- * EAP peer method: EAP-AKA (RFC 4187)
- * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
+ * EAP peer method: EAP-AKA (RFC 4187) and EAP-AKA' (draft-arkko-eap-aka-kdf)
+ * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -19,6 +19,7 @@
#include "pcsc_funcs.h"
#include "eap_common/eap_sim_common.h"
#include "sha1.h"
+#include "sha256.h"
#include "crypto.h"
#include "eap_peer/eap_config.h"
#ifdef CONFIG_USIM_SIMULATOR
@@ -31,8 +32,9 @@ struct eap_aka_data {
size_t res_len;
u8 nonce_s[EAP_SIM_NONCE_S_LEN];
u8 mk[EAP_SIM_MK_LEN];
- u8 k_aut[EAP_SIM_K_AUT_LEN];
+ u8 k_aut[EAP_AKA_PRIME_K_AUT_LEN];
u8 k_encr[EAP_SIM_K_ENCR_LEN];
+ u8 k_re[EAP_AKA_PRIME_K_RE_LEN]; /* EAP-AKA' only */
u8 msk[EAP_SIM_KEYING_DATA_LEN];
u8 emsk[EAP_EMSK_LEN];
u8 rand[EAP_AKA_RAND_LEN], autn[EAP_AKA_AUTN_LEN];
@@ -54,6 +56,10 @@ struct eap_aka_data {
struct wpabuf *id_msgs;
int prev_id;
int result_ind, use_result_ind;
+ u8 eap_method;
+ u8 *network_name;
+ size_t network_name_len;
+ u16 kdf;
};
@@ -96,6 +102,8 @@ static void * eap_aka_init(struct eap_sm *sm)
if (data == NULL)
return NULL;
+ data->eap_method = EAP_TYPE_AKA;
+
eap_aka_state(data, CONTINUE);
data->prev_id = -1;
@@ -105,6 +113,18 @@ static void * eap_aka_init(struct eap_sm *sm)
}
+#ifdef EAP_AKA_PRIME
+static void * eap_aka_prime_init(struct eap_sm *sm)
+{
+ struct eap_aka_data *data = eap_aka_init(sm);
+ if (data == NULL)
+ return NULL;
+ data->eap_method = EAP_TYPE_AKA_PRIME;
+ return data;
+}
+#endif /* EAP_AKA_PRIME */
+
+
static void eap_aka_deinit(struct eap_sm *sm, void *priv)
{
struct eap_aka_data *data = priv;
@@ -113,6 +133,7 @@ static void eap_aka_deinit(struct eap_sm *sm, void *priv)
os_free(data->reauth_id);
os_free(data->last_eap_identity);
wpabuf_free(data->id_msgs);
+ os_free(data->network_name);
os_free(data);
}
}
@@ -302,7 +323,7 @@ static void eap_aka_add_checkcode(struct eap_aka_data *data,
{
const u8 *addr;
size_t len;
- u8 hash[SHA1_MAC_LEN];
+ u8 hash[SHA256_MAC_LEN];
wpa_printf(MSG_DEBUG, " AT_CHECKCODE");
@@ -315,14 +336,18 @@ static void eap_aka_add_checkcode(struct eap_aka_data *data,
return;
}
- /* Checkcode is SHA1 hash over all EAP-AKA/Identity packets. */
+ /* Checkcode is SHA1/SHA256 hash over all EAP-AKA/Identity packets. */
addr = wpabuf_head(data->id_msgs);
len = wpabuf_len(data->id_msgs);
wpa_hexdump(MSG_MSGDUMP, "EAP-AKA: AT_CHECKCODE data", addr, len);
- sha1_vector(1, &addr, &len, hash);
+ if (data->eap_method == EAP_TYPE_AKA_PRIME)
+ sha256_vector(1, &addr, &len, hash);
+ else
+ sha1_vector(1, &addr, &len, hash);
eap_sim_msg_add(msg, EAP_SIM_AT_CHECKCODE, 0, hash,
- EAP_AKA_CHECKCODE_LEN);
+ data->eap_method == EAP_TYPE_AKA_PRIME ?
+ EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN);
}
@@ -331,7 +356,8 @@ static int eap_aka_verify_checkcode(struct eap_aka_data *data,
{
const u8 *addr;
size_t len;
- u8 hash[SHA1_MAC_LEN];
+ u8 hash[SHA256_MAC_LEN];
+ size_t hash_len;
if (checkcode == NULL)
return -1;
@@ -346,19 +372,25 @@ static int eap_aka_verify_checkcode(struct eap_aka_data *data,
return 0;
}
- if (checkcode_len != EAP_AKA_CHECKCODE_LEN) {
+ hash_len = data->eap_method == EAP_TYPE_AKA_PRIME ?
+ EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN;
+
+ if (checkcode_len != hash_len) {
wpa_printf(MSG_DEBUG, "EAP-AKA: Checkcode from server "
"indicates that AKA/Identity message were not "
"used, but they were");
return -1;
}
- /* Checkcode is SHA1 hash over all EAP-AKA/Identity packets. */
+ /* Checkcode is SHA1/SHA256 hash over all EAP-AKA/Identity packets. */
addr = wpabuf_head(data->id_msgs);
len = wpabuf_len(data->id_msgs);
- sha1_vector(1, &addr, &len, hash);
+ if (data->eap_method == EAP_TYPE_AKA_PRIME)
+ sha256_vector(1, &addr, &len, hash);
+ else
+ sha1_vector(1, &addr, &len, hash);
- if (os_memcmp(hash, checkcode, EAP_AKA_CHECKCODE_LEN) != 0) {
+ if (os_memcmp(hash, checkcode, hash_len) != 0) {
wpa_printf(MSG_DEBUG, "EAP-AKA: Mismatch in AT_CHECKCODE");
return -1;
}
@@ -376,7 +408,7 @@ static struct wpabuf * eap_aka_client_error(struct eap_aka_data *data, u8 id,
data->num_id_req = 0;
data->num_notification = 0;
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+ msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
EAP_AKA_SUBTYPE_CLIENT_ERROR);
eap_sim_msg_add(msg, EAP_SIM_AT_CLIENT_ERROR_CODE, err, NULL, 0);
return eap_sim_msg_finish(msg, NULL, NULL, 0);
@@ -394,7 +426,7 @@ static struct wpabuf * eap_aka_authentication_reject(struct eap_aka_data *data,
wpa_printf(MSG_DEBUG, "Generating EAP-AKA Authentication-Reject "
"(id=%d)", id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+ msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
EAP_AKA_SUBTYPE_AUTHENTICATION_REJECT);
return eap_sim_msg_finish(msg, NULL, NULL, 0);
}
@@ -410,7 +442,7 @@ static struct wpabuf * eap_aka_synchronization_failure(
wpa_printf(MSG_DEBUG, "Generating EAP-AKA Synchronization-Failure "
"(id=%d)", id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+ msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
EAP_AKA_SUBTYPE_SYNCHRONIZATION_FAILURE);
wpa_printf(MSG_DEBUG, " AT_AUTS");
eap_sim_msg_add_full(msg, EAP_SIM_AT_AUTS, data->auts,
@@ -449,7 +481,7 @@ static struct wpabuf * eap_aka_response_identity(struct eap_sm *sm,
eap_aka_clear_identities(data, CLEAR_EAP_ID);
wpa_printf(MSG_DEBUG, "Generating EAP-AKA Identity (id=%d)", id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+ msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
EAP_AKA_SUBTYPE_IDENTITY);
if (identity) {
@@ -469,7 +501,7 @@ static struct wpabuf * eap_aka_response_challenge(struct eap_aka_data *data,
struct eap_sim_msg *msg;
wpa_printf(MSG_DEBUG, "Generating EAP-AKA Challenge (id=%d)", id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+ msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
EAP_AKA_SUBTYPE_CHALLENGE);
wpa_printf(MSG_DEBUG, " AT_RES");
eap_sim_msg_add(msg, EAP_SIM_AT_RES, data->res_len * 8,
@@ -494,7 +526,7 @@ static struct wpabuf * eap_aka_response_reauth(struct eap_aka_data *data,
wpa_printf(MSG_DEBUG, "Generating EAP-AKA Reauthentication (id=%d)",
id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+ msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
EAP_AKA_SUBTYPE_REAUTHENTICATION);
wpa_printf(MSG_DEBUG, " AT_IV");
wpa_printf(MSG_DEBUG, " AT_ENCR_DATA");
@@ -535,7 +567,7 @@ static struct wpabuf * eap_aka_response_notification(struct eap_aka_data *data,
u8 *k_aut = (notification & 0x4000) == 0 ? data->k_aut : NULL;
wpa_printf(MSG_DEBUG, "Generating EAP-AKA Notification (id=%d)", id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+ msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
EAP_AKA_SUBTYPE_NOTIFICATION);
if (k_aut && data->reauth) {
wpa_printf(MSG_DEBUG, " AT_IV");
@@ -611,6 +643,101 @@ static struct wpabuf * eap_aka_process_identity(struct eap_sm *sm,
}
+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);
+}
+
+
+#ifdef EAP_AKA_PRIME
+static struct wpabuf * eap_aka_prime_kdf_select(struct eap_aka_data *data,
+ u8 id, u16 kdf)
+{
+ struct eap_sim_msg *msg;
+
+ data->kdf = kdf;
+ wpa_printf(MSG_DEBUG, "Generating EAP-AKA Challenge (id=%d) (KDF "
+ "select)", id);
+ msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
+ EAP_AKA_SUBTYPE_CHALLENGE);
+ wpa_printf(MSG_DEBUG, " AT_KDF");
+ eap_sim_msg_add(msg, EAP_SIM_AT_KDF, kdf, NULL, 0);
+ return eap_sim_msg_finish(msg, NULL, NULL, 0);
+}
+
+
+static struct wpabuf * eap_aka_prime_kdf_neg(struct eap_aka_data *data,
+ u8 id, struct eap_sim_attrs *attr)
+{
+ size_t i;
+
+ for (i = 0; i < attr->kdf_count; i++) {
+ if (attr->kdf[i] == EAP_AKA_PRIME_KDF)
+ return eap_aka_prime_kdf_select(data, id,
+ EAP_AKA_PRIME_KDF);
+ }
+
+ /* No matching KDF found - fail authentication as if AUTN had been
+ * incorrect */
+ return eap_aka_authentication_reject(data, id);
+}
+
+
+static int eap_aka_prime_kdf_valid(struct eap_aka_data *data,
+ struct eap_sim_attrs *attr)
+{
+ size_t i, j;
+
+ if (attr->kdf_count == 0)
+ return 0;
+
+ /* The only allowed (and required) duplication of a KDF is the addition
+ * of the selected KDF into the beginning of the list. */
+
+ if (data->kdf) {
+ if (attr->kdf[0] != data->kdf) {
+ wpa_printf(MSG_WARNING, "EAP-AKA': The server did not "
+ "accept the selected KDF");
+ return 0;
+ }
+
+ for (i = 1; i < attr->kdf_count; i++) {
+ if (attr->kdf[i] == data->kdf)
+ break;
+ }
+ if (i == attr->kdf_count &&
+ attr->kdf_count < EAP_AKA_PRIME_KDF_MAX) {
+ wpa_printf(MSG_WARNING, "EAP-AKA': The server did not "
+ "duplicate the selected KDF");
+ return 0;
+ }
+
+ /* TODO: should check that the list is identical to the one
+ * used in the previous Challenge message apart from the added
+ * entry in the beginning. */
+ }
+
+ for (i = data->kdf ? 1 : 0; i < attr->kdf_count; i++) {
+ for (j = i + 1; j < attr->kdf_count; j++) {
+ if (attr->kdf[i] == attr->kdf[j]) {
+ wpa_printf(MSG_WARNING, "EAP-AKA': The server "
+ "included a duplicated KDF");
+ return 0;
+ }
+ }
+ }
+
+ return 1;
+}
+#endif /* EAP_AKA_PRIME */
+
+
static struct wpabuf * eap_aka_process_challenge(struct eap_sm *sm,
struct eap_aka_data *data,
u8 id,
@@ -633,6 +760,52 @@ static struct wpabuf * eap_aka_process_challenge(struct eap_sm *sm,
EAP_AKA_UNABLE_TO_PROCESS_PACKET);
}
+#ifdef EAP_AKA_PRIME
+ if (data->eap_method == EAP_TYPE_AKA_PRIME) {
+ if (!attr->kdf_input || attr->kdf_input_len == 0) {
+ wpa_printf(MSG_WARNING, "EAP-AKA': Challenge message "
+ "did not include non-empty AT_KDF_INPUT");
+ /* Fail authentication as if AUTN had been incorrect */
+ return eap_aka_authentication_reject(data, id);
+ }
+ os_free(data->network_name);
+ data->network_name = os_malloc(attr->kdf_input_len);
+ if (data->network_name == NULL) {
+ wpa_printf(MSG_WARNING, "EAP-AKA': No memory for "
+ "storing Network Name");
+ return eap_aka_authentication_reject(data, id);
+ }
+ os_memcpy(data->network_name, attr->kdf_input,
+ attr->kdf_input_len);
+ data->network_name_len = attr->kdf_input_len;
+ wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA': Network Name "
+ "(AT_KDF_INPUT)",
+ data->network_name, data->network_name_len);
+ /* TODO: check Network Name per 3GPP.33.402 */
+
+ if (!eap_aka_prime_kdf_valid(data, attr))
+ return eap_aka_authentication_reject(data, id);
+
+ if (attr->kdf[0] != EAP_AKA_PRIME_KDF)
+ return eap_aka_prime_kdf_neg(data, id, attr);
+
+ data->kdf = EAP_AKA_PRIME_KDF;
+ wpa_printf(MSG_DEBUG, "EAP-AKA': KDF %d selected", data->kdf);
+ }
+
+ if (data->eap_method == EAP_TYPE_AKA && attr->bidding) {
+ u16 flags = WPA_GET_BE16(attr->bidding);
+ if ((flags & EAP_AKA_BIDDING_FLAG_D) &&
+ eap_allowed_method(sm, EAP_VENDOR_IETF,
+ EAP_TYPE_AKA_PRIME)) {
+ wpa_printf(MSG_WARNING, "EAP-AKA: Bidding down from "
+ "AKA' to AKA detected");
+ /* Fail authentication as if AUTN had been incorrect */
+ return eap_aka_authentication_reject(data, id);
+ }
+ }
+#endif /* EAP_AKA_PRIME */
+
data->reauth = 0;
if (!attr->mac || !attr->rand || !attr->autn) {
wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message "
@@ -660,6 +833,16 @@ static struct wpabuf * eap_aka_process_challenge(struct eap_sm *sm,
return eap_aka_client_error(data, id,
EAP_AKA_UNABLE_TO_PROCESS_PACKET);
}
+#ifdef EAP_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_AKA_PRIME */
if (data->last_eap_identity) {
identity = data->last_eap_identity;
identity_len = data->last_eap_identity_len;
@@ -670,12 +853,17 @@ static struct wpabuf * eap_aka_process_challenge(struct eap_sm *sm,
identity = eap_get_config_identity(sm, &identity_len);
wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA: Selected identity for MK "
"derivation", identity, identity_len);
- eap_aka_derive_mk(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);
- if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, (u8 *) "", 0))
- {
+ 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(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);
+ }
+ if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) {
wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message "
"used invalid AT_MAC");
return eap_aka_client_error(data, id,
@@ -763,8 +951,7 @@ static int eap_aka_process_notification_auth(struct eap_aka_data *data,
return -1;
}
- if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, (u8 *) "", 0))
- {
+ if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) {
wpa_printf(MSG_WARNING, "EAP-AKA: Notification message "
"used invalid AT_MAC");
return -1;
@@ -842,8 +1029,7 @@ static struct wpabuf * eap_aka_process_reauthentication(
}
data->reauth = 1;
- if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, (u8 *) "", 0))
- {
+ if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) {
wpa_printf(MSG_WARNING, "EAP-AKA: Reauthentication "
"did not have valid AT_MAC");
return eap_aka_client_error(data, id,
@@ -882,10 +1068,6 @@ static struct wpabuf * eap_aka_process_reauthentication(
"(%d <= %d)", eattr.counter, data->counter);
data->counter_too_small = eattr.counter;
- eap_sim_derive_keys_reauth(eattr.counter, data->reauth_id,
- data->reauth_id_len, eattr.nonce_s,
- data->mk, NULL, NULL);
-
/* Reply using Re-auth w/ AT_COUNTER_TOO_SMALL. The current
* reauth_id must not be used to start a new reauthentication.
* However, since it was used in the last EAP-Response-Identity
@@ -908,10 +1090,18 @@ static struct wpabuf * eap_aka_process_reauthentication(
wpa_hexdump(MSG_DEBUG, "EAP-AKA: (encr) AT_NONCE_S",
data->nonce_s, EAP_SIM_NONCE_S_LEN);
- eap_sim_derive_keys_reauth(data->counter,
- data->reauth_id, data->reauth_id_len,
- data->nonce_s, data->mk, data->msk,
- data->emsk);
+ if (data->eap_method == EAP_TYPE_AKA_PRIME) {
+ eap_aka_prime_derive_keys_reauth(data->k_re, data->counter,
+ data->reauth_id,
+ data->reauth_id_len,
+ data->nonce_s,
+ data->msk, data->emsk);
+ } else {
+ eap_sim_derive_keys_reauth(data->counter, data->reauth_id,
+ data->reauth_id_len,
+ data->nonce_s, data->mk,
+ data->msk, data->emsk);
+ }
eap_aka_clear_identities(data, CLEAR_REAUTH_ID | CLEAR_EAP_ID);
eap_aka_learn_ids(data, &eattr);
@@ -955,7 +1145,8 @@ static struct wpabuf * eap_aka_process(struct eap_sm *sm, void *priv,
return NULL;
}
- pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_AKA, reqData, &len);
+ pos = eap_hdr_validate(EAP_VENDOR_IETF, data->eap_method, reqData,
+ &len);
if (pos == NULL || len < 1) {
ret->ignore = TRUE;
return NULL;
@@ -973,7 +1164,8 @@ static struct wpabuf * eap_aka_process(struct eap_sm *sm, void *priv,
wpa_printf(MSG_DEBUG, "EAP-AKA: Subtype=%d", subtype);
pos += 2; /* Reserved */
- if (eap_sim_parse_attr(pos, wpabuf_head_u8(reqData) + len, &attr, 1,
+ if (eap_sim_parse_attr(pos, wpabuf_head_u8(reqData) + len, &attr,
+ data->eap_method == EAP_TYPE_AKA_PRIME ? 2 : 1,
0)) {
res = eap_aka_client_error(data, id,
EAP_AKA_UNABLE_TO_PROCESS_PACKET);
@@ -1152,3 +1344,35 @@ int eap_peer_aka_register(void)
eap_peer_method_free(eap);
return ret;
}
+
+
+#ifdef EAP_AKA_PRIME
+int eap_peer_aka_prime_register(void)
+{
+ struct eap_method *eap;
+ int ret;
+
+ eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION,
+ EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME,
+ "AKA'");
+ if (eap == NULL)
+ return -1;
+
+ eap->init = eap_aka_prime_init;
+ eap->deinit = eap_aka_deinit;
+ eap->process = eap_aka_process;
+ eap->isKeyAvailable = eap_aka_isKeyAvailable;
+ eap->getKey = eap_aka_getKey;
+ eap->has_reauth_data = eap_aka_has_reauth_data;
+ eap->deinit_for_reauth = eap_aka_deinit_for_reauth;
+ eap->init_for_reauth = eap_aka_init_for_reauth;
+ eap->get_identity = eap_aka_get_identity;
+ eap->get_emsk = eap_aka_get_emsk;
+
+ ret = eap_peer_method_register(eap);
+ if (ret)
+ eap_peer_method_free(eap);
+
+ return ret;
+}
+#endif /* EAP_AKA_PRIME */
diff --git a/src/eap_peer/eap_aka_prime.c b/src/eap_peer/eap_aka_prime.c
deleted file mode 100644
index bf1d472..0000000
--- a/src/eap_peer/eap_aka_prime.c
+++ /dev/null
@@ -1,1373 +0,0 @@
-/*
- * EAP peer method: EAP-AKA' (draft-arkko-eap-aka-kdf-10.txt)
- * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
- */
-
-#include "includes.h"
-
-#include "common.h"
-#include "eap_peer/eap_i.h"
-#include "pcsc_funcs.h"
-#include "eap_common/eap_sim_common.h"
-#include "sha1.h"
-#include "sha256.h"
-#include "crypto.h"
-#include "eap_peer/eap_config.h"
-#ifdef CONFIG_USIM_SIMULATOR
-#include "hlr_auc_gw/milenage.h"
-#endif /* CONFIG_USIM_SIMULATOR */
-
-
-struct eap_aka_data {
- u8 ik[EAP_AKA_IK_LEN], ck[EAP_AKA_CK_LEN], res[EAP_AKA_RES_MAX_LEN];
- size_t res_len;
- u8 nonce_s[EAP_SIM_NONCE_S_LEN];
- u8 mk[EAP_SIM_MK_LEN];
- u8 k_aut[EAP_AKA_PRIME_K_AUT_LEN];
- u8 k_encr[EAP_SIM_K_ENCR_LEN];
- u8 k_re[EAP_AKA_PRIME_K_RE_LEN];
- u8 msk[EAP_SIM_KEYING_DATA_LEN];
- u8 emsk[EAP_EMSK_LEN];
- u8 rand[EAP_AKA_RAND_LEN], autn[EAP_AKA_AUTN_LEN];
- u8 auts[EAP_AKA_AUTS_LEN];
-
- int num_id_req, num_notification;
- u8 *pseudonym;
- size_t pseudonym_len;
- u8 *reauth_id;
- size_t reauth_id_len;
- int reauth;
- unsigned int counter, counter_too_small;
- u8 *last_eap_identity;
- size_t last_eap_identity_len;
- enum {
- CONTINUE, RESULT_SUCCESS, RESULT_FAILURE, SUCCESS, FAILURE
- } state;
-
- struct wpabuf *id_msgs;
- int prev_id;
- int result_ind, use_result_ind;
- u8 eap_method;
- u8 *network_name;
- size_t network_name_len;
- u16 kdf;
-};
-
-
-#ifndef CONFIG_NO_STDOUT_DEBUG
-static const char * eap_aka_state_txt(int state)
-{
- switch (state) {
- case CONTINUE:
- return "CONTINUE";
- case RESULT_SUCCESS:
- return "RESULT_SUCCESS";
- case RESULT_FAILURE:
- return "RESULT_FAILURE";
- case SUCCESS:
- return "SUCCESS";
- case FAILURE:
- return "FAILURE";
- default:
- return "?";
- }
-}
-#endif /* CONFIG_NO_STDOUT_DEBUG */
-
-
-static void eap_aka_state(struct eap_aka_data *data, int state)
-{
- wpa_printf(MSG_DEBUG, "EAP-AKA%s: %s -> %s",
- data->eap_method == EAP_TYPE_AKA_PRIME ? "'" : "",
- eap_aka_state_txt(data->state),
- eap_aka_state_txt(state));
- data->state = state;
-}
-
-
-static void * eap_aka_init(struct eap_sm *sm)
-{
- struct eap_aka_data *data;
- const char *phase1 = eap_get_config_phase1(sm);
-
- data = os_zalloc(sizeof(*data));
- if (data == NULL)
- return NULL;
-
- data->eap_method = EAP_TYPE_AKA;
-
- eap_aka_state(data, CONTINUE);
- data->prev_id = -1;
-
- data->result_ind = phase1 && os_strstr(phase1, "result_ind=1") != NULL;
-
- return data;
-}
-
-
-static void * eap_aka_prime_init(struct eap_sm *sm)
-{
- struct eap_aka_data *data = eap_aka_init(sm);
- if (data == NULL)
- return NULL;
- data->eap_method = EAP_TYPE_AKA_PRIME;
- return data;
-}
-
-
-static void eap_aka_deinit(struct eap_sm *sm, void *priv)
-{
- struct eap_aka_data *data = priv;
- if (data) {
- os_free(data->pseudonym);
- os_free(data->reauth_id);
- os_free(data->last_eap_identity);
- wpabuf_free(data->id_msgs);
- os_free(data->network_name);
- os_free(data);
- }
-}
-
-
-static int eap_aka_umts_auth(struct eap_sm *sm, struct eap_aka_data *data)
-{
- struct eap_peer_config *conf;
-
- wpa_printf(MSG_DEBUG, "EAP-AKA: UMTS authentication algorithm");
-
- conf = eap_get_config(sm);
- if (conf == NULL)
- return -1;
- if (conf->pcsc) {
- return scard_umts_auth(sm->scard_ctx, data->rand,
- data->autn, data->res, &data->res_len,
- data->ik, data->ck, data->auts);
- }
-
-#ifdef CONFIG_USIM_SIMULATOR
- if (conf->password) {
- u8 opc[16], k[16], sqn[6];
- const char *pos;
- wpa_printf(MSG_DEBUG, "EAP-AKA: Use internal Milenage "
- "implementation for UMTS authentication");
- if (conf->password_len < 78) {
- wpa_printf(MSG_DEBUG, "EAP-AKA: invalid Milenage "
- "password");
- return -1;
- }
- pos = (const char *) conf->password;
- if (hexstr2bin(pos, k, 16))
- return -1;
- pos += 32;
- if (*pos != ':')
- return -1;
- pos++;
-
- if (hexstr2bin(pos, opc, 16))
- return -1;
- pos += 32;
- if (*pos != ':')
- return -1;
- pos++;
-
- if (hexstr2bin(pos, sqn, 6))
- return -1;
-
- return milenage_check(opc, k, sqn, data->rand, data->autn,
- data->ik, data->ck,
- data->res, &data->res_len, data->auts);
- }
-#endif /* CONFIG_USIM_SIMULATOR */
-
-#ifdef CONFIG_USIM_HARDCODED
- wpa_printf(MSG_DEBUG, "EAP-AKA: Use hardcoded Kc and SRES values for "
- "testing");
-
- /* These hardcoded Kc and SRES values are used for testing.
- * Could consider making them configurable. */
- os_memset(data->res, '2', EAP_AKA_RES_MAX_LEN);
- data->res_len = EAP_AKA_RES_MAX_LEN;
- os_memset(data->ik, '3', EAP_AKA_IK_LEN);
- os_memset(data->ck, '4', EAP_AKA_CK_LEN);
- {
- u8 autn[EAP_AKA_AUTN_LEN];
- os_memset(autn, '1', EAP_AKA_AUTN_LEN);
- if (os_memcmp(autn, data->autn, EAP_AKA_AUTN_LEN) != 0) {
- wpa_printf(MSG_WARNING, "EAP-AKA: AUTN did not match "
- "with expected value");
- return -1;
- }
- }
-#if 0
- {
- static int test_resync = 1;
- if (test_resync) {
- /* Test Resynchronization */
- test_resync = 0;
- return -2;
- }
- }
-#endif
- return 0;
-
-#else /* CONFIG_USIM_HARDCODED */
-
- wpa_printf(MSG_DEBUG, "EAP-AKA: No UMTS authentication algorith "
- "enabled");
- return -1;
-
-#endif /* CONFIG_USIM_HARDCODED */
-}
-
-
-#define CLEAR_PSEUDONYM 0x01
-#define CLEAR_REAUTH_ID 0x02
-#define CLEAR_EAP_ID 0x04
-
-static void eap_aka_clear_identities(struct eap_aka_data *data, int id)
-{
- wpa_printf(MSG_DEBUG, "EAP-AKA: forgetting old%s%s%s",
- id & CLEAR_PSEUDONYM ? " pseudonym" : "",
- id & CLEAR_REAUTH_ID ? " reauth_id" : "",
- id & CLEAR_EAP_ID ? " eap_id" : "");
- if (id & CLEAR_PSEUDONYM) {
- os_free(data->pseudonym);
- data->pseudonym = NULL;
- data->pseudonym_len = 0;
- }
- if (id & CLEAR_REAUTH_ID) {
- os_free(data->reauth_id);
- data->reauth_id = NULL;
- data->reauth_id_len = 0;
- }
- if (id & CLEAR_EAP_ID) {
- os_free(data->last_eap_identity);
- data->last_eap_identity = NULL;
- data->last_eap_identity_len = 0;
- }
-}
-
-
-static int eap_aka_learn_ids(struct eap_aka_data *data,
- struct eap_sim_attrs *attr)
-{
- if (attr->next_pseudonym) {
- os_free(data->pseudonym);
- data->pseudonym = os_malloc(attr->next_pseudonym_len);
- if (data->pseudonym == NULL) {
- wpa_printf(MSG_INFO, "EAP-AKA: (encr) No memory for "
- "next pseudonym");
- return -1;
- }
- os_memcpy(data->pseudonym, attr->next_pseudonym,
- attr->next_pseudonym_len);
- data->pseudonym_len = attr->next_pseudonym_len;
- wpa_hexdump_ascii(MSG_DEBUG,
- "EAP-AKA: (encr) AT_NEXT_PSEUDONYM",
- data->pseudonym,
- data->pseudonym_len);
- }
-
- if (attr->next_reauth_id) {
- os_free(data->reauth_id);
- data->reauth_id = os_malloc(attr->next_reauth_id_len);
- if (data->reauth_id == NULL) {
- wpa_printf(MSG_INFO, "EAP-AKA: (encr) No memory for "
- "next reauth_id");
- return -1;
- }
- os_memcpy(data->reauth_id, attr->next_reauth_id,
- attr->next_reauth_id_len);
- data->reauth_id_len = attr->next_reauth_id_len;
- wpa_hexdump_ascii(MSG_DEBUG,
- "EAP-AKA: (encr) AT_NEXT_REAUTH_ID",
- data->reauth_id,
- data->reauth_id_len);
- }
-
- return 0;
-}
-
-
-static int eap_aka_add_id_msg(struct eap_aka_data *data,
- const struct wpabuf *msg)
-{
- if (msg == NULL)
- return -1;
-
- if (data->id_msgs == NULL) {
- data->id_msgs = wpabuf_dup(msg);
- return data->id_msgs == NULL ? -1 : 0;
- }
-
- if (wpabuf_resize(&data->id_msgs, wpabuf_len(msg)) < 0)
- return -1;
- wpabuf_put_buf(data->id_msgs, msg);
-
- return 0;
-}
-
-
-static void eap_aka_add_checkcode(struct eap_aka_data *data,
- struct eap_sim_msg *msg)
-{
- const u8 *addr;
- size_t len;
- u8 hash[SHA256_MAC_LEN];
-
- wpa_printf(MSG_DEBUG, " AT_CHECKCODE");
-
- if (data->id_msgs == NULL) {
- /*
- * No EAP-AKA/Identity packets were exchanged - send empty
- * checkcode.
- */
- eap_sim_msg_add(msg, EAP_SIM_AT_CHECKCODE, 0, NULL, 0);
- return;
- }
-
- /* Checkcode is SHA1/SHA256 hash over all EAP-AKA/Identity packets. */
- addr = wpabuf_head(data->id_msgs);
- len = wpabuf_len(data->id_msgs);
- wpa_hexdump(MSG_MSGDUMP, "EAP-AKA: AT_CHECKCODE data", addr, len);
- if (data->eap_method == EAP_TYPE_AKA_PRIME)
- sha256_vector(1, &addr, &len, hash);
- else
- sha1_vector(1, &addr, &len, hash);
-
- eap_sim_msg_add(msg, EAP_SIM_AT_CHECKCODE, 0, hash,
- data->eap_method == EAP_TYPE_AKA_PRIME ?
- EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN);
-}
-
-
-static int eap_aka_verify_checkcode(struct eap_aka_data *data,
- const u8 *checkcode, size_t checkcode_len)
-{
- const u8 *addr;
- size_t len;
- u8 hash[SHA256_MAC_LEN];
- size_t hash_len;
-
- if (checkcode == NULL)
- return -1;
-
- if (data->id_msgs == NULL) {
- if (checkcode_len != 0) {
- wpa_printf(MSG_DEBUG, "EAP-AKA: Checkcode from server "
- "indicates that AKA/Identity messages were "
- "used, but they were not");
- return -1;
- }
- return 0;
- }
-
- hash_len = data->eap_method == EAP_TYPE_AKA_PRIME ?
- EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN;
-
- if (checkcode_len != hash_len) {
- wpa_printf(MSG_DEBUG, "EAP-AKA: Checkcode from server "
- "indicates that AKA/Identity message were not "
- "used, but they were");
- return -1;
- }
-
- /* Checkcode is SHA1/SHA256 hash over all EAP-AKA/Identity packets. */
- addr = wpabuf_head(data->id_msgs);
- len = wpabuf_len(data->id_msgs);
- if (data->eap_method == EAP_TYPE_AKA_PRIME)
- sha256_vector(1, &addr, &len, hash);
- else
- sha1_vector(1, &addr, &len, hash);
-
- if (os_memcmp(hash, checkcode, hash_len) != 0) {
- wpa_printf(MSG_DEBUG, "EAP-AKA: Mismatch in AT_CHECKCODE");
- return -1;
- }
-
- return 0;
-}
-
-
-static struct wpabuf * eap_aka_client_error(struct eap_aka_data *data, u8 id,
- int err)
-{
- struct eap_sim_msg *msg;
-
- eap_aka_state(data, FAILURE);
- data->num_id_req = 0;
- data->num_notification = 0;
-
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
- EAP_AKA_SUBTYPE_CLIENT_ERROR);
- eap_sim_msg_add(msg, EAP_SIM_AT_CLIENT_ERROR_CODE, err, NULL, 0);
- return eap_sim_msg_finish(msg, NULL, NULL, 0);
-}
-
-
-static struct wpabuf * eap_aka_authentication_reject(struct eap_aka_data *data,
- u8 id)
-{
- struct eap_sim_msg *msg;
-
- eap_aka_state(data, FAILURE);
- data->num_id_req = 0;
- data->num_notification = 0;
-
- wpa_printf(MSG_DEBUG, "Generating EAP-AKA Authentication-Reject "
- "(id=%d)", id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
- EAP_AKA_SUBTYPE_AUTHENTICATION_REJECT);
- return eap_sim_msg_finish(msg, NULL, NULL, 0);
-}
-
-
-static struct wpabuf * eap_aka_synchronization_failure(
- struct eap_aka_data *data, u8 id)
-{
- struct eap_sim_msg *msg;
-
- data->num_id_req = 0;
- data->num_notification = 0;
-
- wpa_printf(MSG_DEBUG, "Generating EAP-AKA Synchronization-Failure "
- "(id=%d)", id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
- EAP_AKA_SUBTYPE_SYNCHRONIZATION_FAILURE);
- wpa_printf(MSG_DEBUG, " AT_AUTS");
- eap_sim_msg_add_full(msg, EAP_SIM_AT_AUTS, data->auts,
- EAP_AKA_AUTS_LEN);
- return eap_sim_msg_finish(msg, NULL, NULL, 0);
-}
-
-
-static struct wpabuf * eap_aka_response_identity(struct eap_sm *sm,
- struct eap_aka_data *data,
- u8 id,
- enum eap_sim_id_req id_req)
-{
- const u8 *identity = NULL;
- size_t identity_len = 0;
- struct eap_sim_msg *msg;
-
- data->reauth = 0;
- if (id_req == ANY_ID && data->reauth_id) {
- identity = data->reauth_id;
- identity_len = data->reauth_id_len;
- data->reauth = 1;
- } else if ((id_req == ANY_ID || id_req == FULLAUTH_ID) &&
- data->pseudonym) {
- identity = data->pseudonym;
- identity_len = data->pseudonym_len;
- eap_aka_clear_identities(data, CLEAR_REAUTH_ID);
- } else if (id_req != NO_ID_REQ) {
- identity = eap_get_config_identity(sm, &identity_len);
- if (identity) {
- eap_aka_clear_identities(data, CLEAR_PSEUDONYM |
- CLEAR_REAUTH_ID);
- }
- }
- if (id_req != NO_ID_REQ)
- eap_aka_clear_identities(data, CLEAR_EAP_ID);
-
- wpa_printf(MSG_DEBUG, "Generating EAP-AKA Identity (id=%d)", id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
- EAP_AKA_SUBTYPE_IDENTITY);
-
- if (identity) {
- wpa_hexdump_ascii(MSG_DEBUG, " AT_IDENTITY",
- identity, identity_len);
- eap_sim_msg_add(msg, EAP_SIM_AT_IDENTITY, identity_len,
- identity, identity_len);
- }
-
- return eap_sim_msg_finish(msg, NULL, NULL, 0);
-}
-
-
-static struct wpabuf * eap_aka_response_challenge(struct eap_aka_data *data,
- u8 id)
-{
- struct eap_sim_msg *msg;
-
- wpa_printf(MSG_DEBUG, "Generating EAP-AKA Challenge (id=%d)", id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
- EAP_AKA_SUBTYPE_CHALLENGE);
- wpa_printf(MSG_DEBUG, " AT_RES");
- eap_sim_msg_add(msg, EAP_SIM_AT_RES, data->res_len * 8,
- data->res, data->res_len);
- eap_aka_add_checkcode(data, msg);
- if (data->use_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, (u8 *) "", 0);
-}
-
-
-static struct wpabuf * eap_aka_response_reauth(struct eap_aka_data *data,
- u8 id, int counter_too_small,
- const u8 *nonce_s)
-{
- struct eap_sim_msg *msg;
- unsigned int counter;
-
- wpa_printf(MSG_DEBUG, "Generating EAP-AKA Reauthentication (id=%d)",
- id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
- EAP_AKA_SUBTYPE_REAUTHENTICATION);
- 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);
-
- if (counter_too_small) {
- wpa_printf(MSG_DEBUG, " *AT_COUNTER_TOO_SMALL");
- eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER_TOO_SMALL, 0, NULL, 0);
- counter = data->counter_too_small;
- } else
- counter = data->counter;
-
- wpa_printf(MSG_DEBUG, " *AT_COUNTER %d", counter);
- eap_sim_msg_add(msg, EAP_SIM_AT_COUNTER, 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;
- }
- eap_aka_add_checkcode(data, msg);
- if (data->use_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, nonce_s,
- EAP_SIM_NONCE_S_LEN);
-}
-
-
-static struct wpabuf * eap_aka_response_notification(struct eap_aka_data *data,
- u8 id, u16 notification)
-{
- struct eap_sim_msg *msg;
- u8 *k_aut = (notification & 0x4000) == 0 ? data->k_aut : NULL;
-
- wpa_printf(MSG_DEBUG, "Generating EAP-AKA Notification (id=%d)", id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
- EAP_AKA_SUBTYPE_NOTIFICATION);
- if (k_aut && 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 %d", 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;
- }
- }
- if (k_aut) {
- wpa_printf(MSG_DEBUG, " AT_MAC");
- eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC);
- }
- return eap_sim_msg_finish(msg, k_aut, (u8 *) "", 0);
-}
-
-
-static struct wpabuf * eap_aka_process_identity(struct eap_sm *sm,
- struct eap_aka_data *data,
- u8 id,
- const struct wpabuf *reqData,
- struct eap_sim_attrs *attr)
-{
- int id_error;
- struct wpabuf *buf;
-
- wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Identity");
-
- id_error = 0;
- switch (attr->id_req) {
- case NO_ID_REQ:
- break;
- case ANY_ID:
- if (data->num_id_req > 0)
- id_error++;
- data->num_id_req++;
- break;
- case FULLAUTH_ID:
- if (data->num_id_req > 1)
- id_error++;
- data->num_id_req++;
- break;
- case PERMANENT_ID:
- if (data->num_id_req > 2)
- id_error++;
- data->num_id_req++;
- break;
- }
- if (id_error) {
- wpa_printf(MSG_INFO, "EAP-AKA: Too many ID requests "
- "used within one authentication");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-
- buf = eap_aka_response_identity(sm, data, id, attr->id_req);
-
- if (data->prev_id != id) {
- eap_aka_add_id_msg(data, reqData);
- eap_aka_add_id_msg(data, buf);
- data->prev_id = id;
- }
-
- return buf;
-}
-
-
-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);
-}
-
-
-#ifdef EAP_AKA_PRIME
-static struct wpabuf * eap_aka_prime_kdf_select(struct eap_aka_data *data,
- u8 id, u16 kdf)
-{
- struct eap_sim_msg *msg;
-
- data->kdf = kdf;
- wpa_printf(MSG_DEBUG, "Generating EAP-AKA Challenge (id=%d) (KDF "
- "select)", id);
- msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
- EAP_AKA_SUBTYPE_CHALLENGE);
- wpa_printf(MSG_DEBUG, " AT_KDF");
- eap_sim_msg_add(msg, EAP_SIM_AT_KDF, kdf, NULL, 0);
- return eap_sim_msg_finish(msg, NULL, NULL, 0);
-}
-
-
-static struct wpabuf * eap_aka_prime_kdf_neg(struct eap_aka_data *data,
- u8 id, struct eap_sim_attrs *attr)
-{
- size_t i;
-
- for (i = 0; i < attr->kdf_count; i++) {
- if (attr->kdf[i] == EAP_AKA_PRIME_KDF)
- return eap_aka_prime_kdf_select(data, id,
- EAP_AKA_PRIME_KDF);
- }
-
- /* No matching KDF found - fail authentication as if AUTN had been
- * incorrect */
- return eap_aka_authentication_reject(data, id);
-}
-
-
-static int eap_aka_prime_kdf_valid(struct eap_aka_data *data,
- struct eap_sim_attrs *attr)
-{
- size_t i, j;
-
- if (attr->kdf_count == 0)
- return 0;
-
- /* The only allowed (and required) duplication of a KDF is the addition
- * of the selected KDF into the beginning of the list. */
-
- if (data->kdf) {
- if (attr->kdf[0] != data->kdf) {
- wpa_printf(MSG_WARNING, "EAP-AKA': The server did not "
- "accept the selected KDF");
- return 0;
- }
-
- for (i = 1; i < attr->kdf_count; i++) {
- if (attr->kdf[i] == data->kdf)
- break;
- }
- if (i == attr->kdf_count &&
- attr->kdf_count < EAP_AKA_PRIME_KDF_MAX) {
- wpa_printf(MSG_WARNING, "EAP-AKA': The server did not "
- "duplicate the selected KDF");
- return 0;
- }
-
- /* TODO: should check that the list is identical to the one
- * used in the previous Challenge message apart from the added
- * entry in the beginning. */
- }
-
- for (i = data->kdf ? 1 : 0; i < attr->kdf_count; i++) {
- for (j = i + 1; j < attr->kdf_count; j++) {
- if (attr->kdf[i] == attr->kdf[j]) {
- wpa_printf(MSG_WARNING, "EAP-AKA': The server "
- "included a duplicated KDF");
- return 0;
- }
- }
- }
-
- return 1;
-}
-#endif /* EAP_AKA_PRIME */
-
-
-static struct wpabuf * eap_aka_process_challenge(struct eap_sm *sm,
- struct eap_aka_data *data,
- u8 id,
- const struct wpabuf *reqData,
- struct eap_sim_attrs *attr)
-{
- const u8 *identity;
- size_t identity_len;
- int res;
- struct eap_sim_attrs eattr;
-
- wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Challenge");
-
- 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");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-
-#ifdef EAP_AKA_PRIME
- if (data->eap_method == EAP_TYPE_AKA_PRIME) {
- if (!attr->kdf_input || attr->kdf_input_len == 0) {
- wpa_printf(MSG_WARNING, "EAP-AKA': Challenge message "
- "did not include non-empty AT_KDF_INPUT");
- /* Fail authentication as if AUTN had been incorrect */
- return eap_aka_authentication_reject(data, id);
- }
- os_free(data->network_name);
- data->network_name = os_malloc(attr->kdf_input_len);
- if (data->network_name == NULL) {
- wpa_printf(MSG_WARNING, "EAP-AKA': No memory for "
- "storing Network Name");
- return eap_aka_authentication_reject(data, id);
- }
- os_memcpy(data->network_name, attr->kdf_input,
- attr->kdf_input_len);
- data->network_name_len = attr->kdf_input_len;
- wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA': Network Name "
- "(AT_KDF_INPUT)",
- data->network_name, data->network_name_len);
- /* TODO: check Network Name per 3GPP.33.402 */
-
- if (!eap_aka_prime_kdf_valid(data, attr))
- return eap_aka_authentication_reject(data, id);
-
- if (attr->kdf[0] != EAP_AKA_PRIME_KDF)
- return eap_aka_prime_kdf_neg(data, id, attr);
-
- data->kdf = EAP_AKA_PRIME_KDF;
- wpa_printf(MSG_DEBUG, "EAP-AKA': KDF %d selected", data->kdf);
- }
-
- if (data->eap_method == EAP_TYPE_AKA && attr->bidding) {
- u16 flags = WPA_GET_BE16(attr->bidding);
- if ((flags & EAP_AKA_BIDDING_FLAG_D) &&
- eap_allowed_method(sm, EAP_VENDOR_IETF,
- EAP_TYPE_AKA_PRIME)) {
- wpa_printf(MSG_WARNING, "EAP-AKA: Bidding down from "
- "AKA' to AKA detected");
- /* Fail authentication as if AUTN had been incorrect */
- return eap_aka_authentication_reject(data, id);
- }
- }
-#endif /* EAP_AKA_PRIME */
-
- data->reauth = 0;
- if (!attr->mac || !attr->rand || !attr->autn) {
- wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message "
- "did not include%s%s%s",
- !attr->mac ? " AT_MAC" : "",
- !attr->rand ? " AT_RAND" : "",
- !attr->autn ? " AT_AUTN" : "");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
- os_memcpy(data->rand, attr->rand, EAP_AKA_RAND_LEN);
- os_memcpy(data->autn, attr->autn, EAP_AKA_AUTN_LEN);
-
- res = eap_aka_umts_auth(sm, data);
- if (res == -1) {
- wpa_printf(MSG_WARNING, "EAP-AKA: UMTS authentication "
- "failed (AUTN)");
- return eap_aka_authentication_reject(data, id);
- } else if (res == -2) {
- wpa_printf(MSG_WARNING, "EAP-AKA: UMTS authentication "
- "failed (AUTN seq# -> AUTS)");
- return eap_aka_synchronization_failure(data, id);
- } else if (res) {
- wpa_printf(MSG_WARNING, "EAP-AKA: UMTS authentication failed");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-#ifdef EAP_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_AKA_PRIME */
- if (data->last_eap_identity) {
- identity = data->last_eap_identity;
- identity_len = data->last_eap_identity_len;
- } else if (data->pseudonym) {
- identity = data->pseudonym;
- identity_len = data->pseudonym_len;
- } else
- identity = eap_get_config_identity(sm, &identity_len);
- wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA: Selected identity for MK "
- "derivation", 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(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);
- }
- if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) {
- wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message "
- "used invalid AT_MAC");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-
- /* Old reauthentication and pseudonym identities must not be used
- * anymore. In other words, if no new identities are received, full
- * authentication will be used on next reauthentication. */
- eap_aka_clear_identities(data, CLEAR_PSEUDONYM | CLEAR_REAUTH_ID |
- CLEAR_EAP_ID);
-
- if (attr->encr_data) {
- u8 *decrypted;
- decrypted = eap_sim_parse_encr(data->k_encr, attr->encr_data,
- attr->encr_data_len, attr->iv,
- &eattr, 0);
- if (decrypted == NULL) {
- return eap_aka_client_error(
- data, id, EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
- eap_aka_learn_ids(data, &eattr);
- os_free(decrypted);
- }
-
- if (data->result_ind && attr->result_ind)
- data->use_result_ind = 1;
-
- if (data->state != FAILURE && data->state != RESULT_FAILURE) {
- eap_aka_state(data, data->use_result_ind ?
- RESULT_SUCCESS : SUCCESS);
- }
-
- data->num_id_req = 0;
- data->num_notification = 0;
- /* RFC 4187 specifies that counter is initialized to one after
- * fullauth, but initializing it to zero makes it easier to implement
- * reauth verification. */
- data->counter = 0;
- return eap_aka_response_challenge(data, id);
-}
-
-
-static int eap_aka_process_notification_reauth(struct eap_aka_data *data,
- struct eap_sim_attrs *attr)
-{
- struct eap_sim_attrs eattr;
- u8 *decrypted;
-
- if (attr->encr_data == NULL || attr->iv == NULL) {
- wpa_printf(MSG_WARNING, "EAP-AKA: Notification message after "
- "reauth did not include encrypted data");
- return -1;
- }
-
- 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 notification message");
- return -1;
- }
-
- if (eattr.counter < 0 || (size_t) eattr.counter != data->counter) {
- wpa_printf(MSG_WARNING, "EAP-AKA: Counter in notification "
- "message does not match with counter in reauth "
- "message");
- os_free(decrypted);
- return -1;
- }
-
- os_free(decrypted);
- return 0;
-}
-
-
-static int eap_aka_process_notification_auth(struct eap_aka_data *data,
- const struct wpabuf *reqData,
- struct eap_sim_attrs *attr)
-{
- if (attr->mac == NULL) {
- wpa_printf(MSG_INFO, "EAP-AKA: no AT_MAC in after_auth "
- "Notification message");
- return -1;
- }
-
- if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) {
- wpa_printf(MSG_WARNING, "EAP-AKA: Notification message "
- "used invalid AT_MAC");
- return -1;
- }
-
- if (data->reauth &&
- eap_aka_process_notification_reauth(data, attr)) {
- wpa_printf(MSG_WARNING, "EAP-AKA: Invalid notification "
- "message after reauth");
- return -1;
- }
-
- return 0;
-}
-
-
-static struct wpabuf * eap_aka_process_notification(
- struct eap_sm *sm, struct eap_aka_data *data, u8 id,
- const struct wpabuf *reqData, struct eap_sim_attrs *attr)
-{
- wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Notification");
- if (data->num_notification > 0) {
- wpa_printf(MSG_INFO, "EAP-AKA: too many notification "
- "rounds (only one allowed)");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
- data->num_notification++;
- if (attr->notification == -1) {
- wpa_printf(MSG_INFO, "EAP-AKA: no AT_NOTIFICATION in "
- "Notification message");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-
- if ((attr->notification & 0x4000) == 0 &&
- eap_aka_process_notification_auth(data, reqData, attr)) {
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-
- eap_sim_report_notification(sm->msg_ctx, attr->notification, 1);
- if (attr->notification >= 0 && attr->notification < 32768) {
- eap_aka_state(data, FAILURE);
- } else if (attr->notification == EAP_SIM_SUCCESS &&
- data->state == RESULT_SUCCESS)
- eap_aka_state(data, SUCCESS);
- return eap_aka_response_notification(data, id, attr->notification);
-}
-
-
-static struct wpabuf * eap_aka_process_reauthentication(
- struct eap_sm *sm, struct eap_aka_data *data, u8 id,
- const struct wpabuf *reqData, struct eap_sim_attrs *attr)
-{
- struct eap_sim_attrs eattr;
- u8 *decrypted;
-
- wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Reauthentication");
-
- 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");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-
- if (data->reauth_id == NULL) {
- wpa_printf(MSG_WARNING, "EAP-AKA: Server is trying "
- "reauthentication, but no reauth_id available");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-
- data->reauth = 1;
- if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) {
- wpa_printf(MSG_WARNING, "EAP-AKA: Reauthentication "
- "did not have valid AT_MAC");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-
- if (attr->encr_data == NULL || attr->iv == NULL) {
- wpa_printf(MSG_WARNING, "EAP-AKA: Reauthentication "
- "message did not include encrypted data");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-
- 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");
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-
- if (eattr.nonce_s == NULL || eattr.counter < 0) {
- wpa_printf(MSG_INFO, "EAP-AKA: (encr) No%s%s in reauth packet",
- !eattr.nonce_s ? " AT_NONCE_S" : "",
- eattr.counter < 0 ? " AT_COUNTER" : "");
- os_free(decrypted);
- return eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- }
-
- if (eattr.counter < 0 || (size_t) eattr.counter <= data->counter) {
- struct wpabuf *res;
- wpa_printf(MSG_INFO, "EAP-AKA: (encr) Invalid counter "
- "(%d <= %d)", eattr.counter, data->counter);
- data->counter_too_small = eattr.counter;
-
- /* Reply using Re-auth w/ AT_COUNTER_TOO_SMALL. The current
- * reauth_id must not be used to start a new reauthentication.
- * However, since it was used in the last EAP-Response-Identity
- * packet, it has to saved for the following fullauth to be
- * used in MK derivation. */
- os_free(data->last_eap_identity);
- data->last_eap_identity = data->reauth_id;
- data->last_eap_identity_len = data->reauth_id_len;
- data->reauth_id = NULL;
- data->reauth_id_len = 0;
-
- res = eap_aka_response_reauth(data, id, 1, eattr.nonce_s);
- os_free(decrypted);
-
- return res;
- }
- data->counter = eattr.counter;
-
- os_memcpy(data->nonce_s, eattr.nonce_s, EAP_SIM_NONCE_S_LEN);
- wpa_hexdump(MSG_DEBUG, "EAP-AKA: (encr) AT_NONCE_S",
- data->nonce_s, EAP_SIM_NONCE_S_LEN);
-
- if (data->eap_method == EAP_TYPE_AKA_PRIME) {
- eap_aka_prime_derive_keys_reauth(data->k_re, data->counter,
- data->reauth_id,
- data->reauth_id_len,
- data->nonce_s,
- data->msk, data->emsk);
- } else {
- eap_sim_derive_keys_reauth(data->counter, data->reauth_id,
- data->reauth_id_len,
- data->nonce_s, data->mk,
- data->msk, data->emsk);
- }
- eap_aka_clear_identities(data, CLEAR_REAUTH_ID | CLEAR_EAP_ID);
- eap_aka_learn_ids(data, &eattr);
-
- if (data->result_ind && attr->result_ind)
- data->use_result_ind = 1;
-
- if (data->state != FAILURE && data->state != RESULT_FAILURE) {
- eap_aka_state(data, data->use_result_ind ?
- RESULT_SUCCESS : SUCCESS);
- }
-
- data->num_id_req = 0;
- data->num_notification = 0;
- if (data->counter > EAP_AKA_MAX_FAST_REAUTHS) {
- wpa_printf(MSG_DEBUG, "EAP-AKA: Maximum number of "
- "fast reauths performed - force fullauth");
- eap_aka_clear_identities(data, CLEAR_REAUTH_ID | CLEAR_EAP_ID);
- }
- os_free(decrypted);
- return eap_aka_response_reauth(data, id, 0, data->nonce_s);
-}
-
-
-static struct wpabuf * eap_aka_process(struct eap_sm *sm, void *priv,
- struct eap_method_ret *ret,
- const struct wpabuf *reqData)
-{
- struct eap_aka_data *data = priv;
- const struct eap_hdr *req;
- u8 subtype, id;
- struct wpabuf *res;
- const u8 *pos;
- struct eap_sim_attrs attr;
- size_t len;
-
- wpa_hexdump_buf(MSG_DEBUG, "EAP-AKA: EAP data", reqData);
- if (eap_get_config_identity(sm, &len) == NULL) {
- wpa_printf(MSG_INFO, "EAP-AKA: Identity not configured");
- eap_sm_request_identity(sm);
- ret->ignore = TRUE;
- return NULL;
- }
-
- pos = eap_hdr_validate(EAP_VENDOR_IETF, data->eap_method, reqData,
- &len);
- if (pos == NULL || len < 1) {
- ret->ignore = TRUE;
- return NULL;
- }
- req = wpabuf_head(reqData);
- id = req->identifier;
- len = be_to_host16(req->length);
-
- ret->ignore = FALSE;
- ret->methodState = METHOD_MAY_CONT;
- ret->decision = DECISION_FAIL;
- ret->allowNotifications = TRUE;
-
- subtype = *pos++;
- wpa_printf(MSG_DEBUG, "EAP-AKA: Subtype=%d", subtype);
- pos += 2; /* Reserved */
-
- if (eap_sim_parse_attr(pos, wpabuf_head_u8(reqData) + len, &attr,
- data->eap_method == EAP_TYPE_AKA_PRIME ? 2 : 1,
- 0)) {
- res = eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- goto done;
- }
-
- switch (subtype) {
- case EAP_AKA_SUBTYPE_IDENTITY:
- res = eap_aka_process_identity(sm, data, id, reqData, &attr);
- break;
- case EAP_AKA_SUBTYPE_CHALLENGE:
- res = eap_aka_process_challenge(sm, data, id, reqData, &attr);
- break;
- case EAP_AKA_SUBTYPE_NOTIFICATION:
- res = eap_aka_process_notification(sm, data, id, reqData,
- &attr);
- break;
- case EAP_AKA_SUBTYPE_REAUTHENTICATION:
- res = eap_aka_process_reauthentication(sm, data, id, reqData,
- &attr);
- break;
- case EAP_AKA_SUBTYPE_CLIENT_ERROR:
- wpa_printf(MSG_DEBUG, "EAP-AKA: subtype Client-Error");
- res = eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- break;
- default:
- wpa_printf(MSG_DEBUG, "EAP-AKA: Unknown subtype=%d", subtype);
- res = eap_aka_client_error(data, id,
- EAP_AKA_UNABLE_TO_PROCESS_PACKET);
- break;
- }
-
-done:
- if (data->state == FAILURE) {
- ret->decision = DECISION_FAIL;
- ret->methodState = METHOD_DONE;
- } else if (data->state == SUCCESS) {
- ret->decision = data->use_result_ind ?
- DECISION_UNCOND_SUCC : DECISION_COND_SUCC;
- /*
- * It is possible for the server to reply with AKA
- * Notification, so we must allow the method to continue and
- * not only accept EAP-Success at this point.
- */
- ret->methodState = data->use_result_ind ?
- METHOD_DONE : METHOD_MAY_CONT;
- } else if (data->state == RESULT_FAILURE)
- ret->methodState = METHOD_CONT;
- else if (data->state == RESULT_SUCCESS)
- ret->methodState = METHOD_CONT;
-
- if (ret->methodState == METHOD_DONE) {
- ret->allowNotifications = FALSE;
- }
-
- return res;
-}
-
-
-static Boolean eap_aka_has_reauth_data(struct eap_sm *sm, void *priv)
-{
- struct eap_aka_data *data = priv;
- return data->pseudonym || data->reauth_id;
-}
-
-
-static void eap_aka_deinit_for_reauth(struct eap_sm *sm, void *priv)
-{
- struct eap_aka_data *data = priv;
- eap_aka_clear_identities(data, CLEAR_EAP_ID);
- data->prev_id = -1;
- wpabuf_free(data->id_msgs);
- data->id_msgs = NULL;
- data->use_result_ind = 0;
-}
-
-
-static void * eap_aka_init_for_reauth(struct eap_sm *sm, void *priv)
-{
- struct eap_aka_data *data = priv;
- data->num_id_req = 0;
- data->num_notification = 0;
- eap_aka_state(data, CONTINUE);
- return priv;
-}
-
-
-static const u8 * eap_aka_get_identity(struct eap_sm *sm, void *priv,
- size_t *len)
-{
- struct eap_aka_data *data = priv;
-
- if (data->reauth_id) {
- *len = data->reauth_id_len;
- return data->reauth_id;
- }
-
- if (data->pseudonym) {
- *len = data->pseudonym_len;
- return data->pseudonym;
- }
-
- return NULL;
-}
-
-
-static Boolean eap_aka_isKeyAvailable(struct eap_sm *sm, void *priv)
-{
- struct eap_aka_data *data = priv;
- return data->state == SUCCESS;
-}
-
-
-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;
-
- *len = EAP_SIM_KEYING_DATA_LEN;
- os_memcpy(key, data->msk, 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;
-
- *len = EAP_EMSK_LEN;
- os_memcpy(key, data->emsk, EAP_EMSK_LEN);
-
- return key;
-}
-
-
-int eap_peer_aka_prime_register(void)
-{
- struct eap_method *eap;
- int ret;
-
- eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION,
- EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME,
- "AKA'");
- if (eap == NULL)
- return -1;
-
- eap->init = eap_aka_prime_init;
- eap->deinit = eap_aka_deinit;
- eap->process = eap_aka_process;
- eap->isKeyAvailable = eap_aka_isKeyAvailable;
- eap->getKey = eap_aka_getKey;
- eap->has_reauth_data = eap_aka_has_reauth_data;
- eap->deinit_for_reauth = eap_aka_deinit_for_reauth;
- eap->init_for_reauth = eap_aka_init_for_reauth;
- eap->get_identity = eap_aka_get_identity;
- eap->get_emsk = eap_aka_get_emsk;
-
- ret = eap_peer_method_register(eap);
- if (ret)
- eap_peer_method_free(eap);
-
-#ifdef EAP_AKA_PRIME_BOTH
- if (ret)
- return ret;
-
- eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION,
- EAP_VENDOR_IETF, EAP_TYPE_AKA,
- "AKA");
- if (eap == NULL)
- return -1;
-
- eap->init = eap_aka_init;
- eap->deinit = eap_aka_deinit;
- eap->process = eap_aka_process;
- eap->isKeyAvailable = eap_aka_isKeyAvailable;
- eap->getKey = eap_aka_getKey;
- eap->has_reauth_data = eap_aka_has_reauth_data;
- eap->deinit_for_reauth = eap_aka_deinit_for_reauth;
- eap->init_for_reauth = eap_aka_init_for_reauth;
- eap->get_identity = eap_aka_get_identity;
- eap->get_emsk = eap_aka_get_emsk;
-
- ret = eap_peer_method_register(eap);
- if (ret)
- eap_peer_method_free(eap);
-#endif /* EAP_AKA_PRIME_BOTH */
-
- return ret;
-}