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EAP-AKA': Added CK',IK' derivation

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This is based on a change request 3GPP TS 33.402 CR 0033 for version
8.1.1. The hardcoded ANID is now 'WLAN' since that is used in
3GPP TS 24.302.
This commit is contained in:
Jouni Malinen 2008-12-04 21:50:56 +02:00
parent a49c428a1b
commit a478ef0d12
4 changed files with 101 additions and 3 deletions
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20
src/eap_server/eap_aka_prime.c
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@ -122,6 +122,8 @@ static void * eap_aka_init(struct eap_sm *sm)
static void * eap_aka_prime_init(struct eap_sm *sm)
{
struct eap_aka_data *data;
/* TODO: make ANID configurable; see 3GPP TS 24.302 */
char *network_name = "WLAN";
if (sm->eap_sim_db_priv == NULL) {
wpa_printf(MSG_WARNING, "EAP-AKA: eap_sim_db not configured");
@ -133,13 +135,14 @@ static void * eap_aka_prime_init(struct eap_sm *sm)
return NULL;
data->eap_method = EAP_TYPE_AKA_PRIME;
data->network_name = os_malloc(3);
data->network_name = os_malloc(os_strlen(network_name));
if (data->network_name == NULL) {
os_free(data);
return NULL;
}
os_memcpy(data->network_name, "FOO", 3); /* FIX: 3GPP.24.302 */
data->network_name_len = 3;
data->network_name_len = os_strlen(network_name);
os_memcpy(data->network_name, network_name, data->network_name_len);
data->state = IDENTITY;
eap_aka_determine_identity(sm, data, 1, 0);
@ -666,6 +669,17 @@ static void eap_aka_determine_identity(struct eap_sm *sm,
return;
}
#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 */
data->reauth = NULL;
data->counter = 0; /* reset re-auth counter since this is full auth */