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EAP-PEAP server: Add support for fast-connect crypto binding

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IPMK and CMK are derived from TK when using TLS session resumption with
PEAPv0 crypto binding. The EAP-PEAP peer implementation already
supported this, but the server side did not.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2015-12-19 20:22:43 +02:00
parent 09ad98c58a
commit 6ca5838b01
1 changed files with 15 additions and 3 deletions
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16
src/eap_server/eap_server_peap.c
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@ -335,6 +335,18 @@ static int eap_peap_derive_cmk(struct eap_sm *sm, struct eap_peap_data *data)
return -1;
wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: TK", tk, 60);
if (tls_connection_resumed(sm->ssl_ctx, data->ssl.conn)) {
/* Fast-connect: IPMK|CMK = TK */
os_memcpy(data->ipmk, tk, 40);
wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: IPMK from TK",
data->ipmk, 40);
os_memcpy(data->cmk, tk + 40, 20);
wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: CMK from TK",
data->cmk, 20);
os_free(tk);
return 0;
}
eap_peap_get_isk(data, isk, sizeof(isk));
wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: ISK", isk, sizeof(isk));
@ -357,7 +369,6 @@ static int eap_peap_derive_cmk(struct eap_sm *sm, struct eap_peap_data *data)
os_free(tk);
/* TODO: fast-connect: IPMK|CMK = TK */
os_memcpy(data->ipmk, imck, 40);
wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: IPMK (S-IPMKj)", data->ipmk, 40);
os_memcpy(data->cmk, imck + 40, 20);
@ -1267,7 +1278,8 @@ static void eap_peap_process(struct eap_sm *sm, void *priv,
wpa_printf(MSG_DEBUG,
"EAP-PEAP: Resuming previous session - skip Phase2");
eap_peap_state(data, SUCCESS_REQ);
eap_peap_req_success(sm, data);
if (data->state == SUCCESS_REQ)
tls_connection_set_success_data_resumed(data->ssl.conn);
}