2008-02-28 02:34:43 +01:00
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/*
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* hostapd / EAP-PAX (RFC 4746) server
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* Copyright (c) 2005-2007, Jouni Malinen <j@w1.fi>
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*
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2012-02-11 15:46:35 +01:00
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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2008-02-28 02:34:43 +01:00
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*/
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#include "includes.h"
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#include "common.h"
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2010-11-24 00:05:20 +01:00
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#include "crypto/random.h"
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2008-02-28 02:34:43 +01:00
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#include "eap_server/eap_i.h"
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#include "eap_common/eap_pax_common.h"
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/*
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* Note: only PAX_STD subprotocol is currently supported
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*
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* TODO: Add support with PAX_SEC with the mandatory to implement ciphersuite
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* (HMAC_SHA1_128, IANA DH Group 14 (2048 bits), RSA-PKCS1-V1_5) and
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* recommended ciphersuite (HMAC_SHA256_128, IANA DH Group 15 (3072 bits),
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* RSAES-OAEP).
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*/
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struct eap_pax_data {
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enum { PAX_STD_1, PAX_STD_3, SUCCESS, FAILURE } state;
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u8 mac_id;
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union {
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u8 e[2 * EAP_PAX_RAND_LEN];
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struct {
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u8 x[EAP_PAX_RAND_LEN]; /* server rand */
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u8 y[EAP_PAX_RAND_LEN]; /* client rand */
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} r;
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} rand;
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u8 ak[EAP_PAX_AK_LEN];
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u8 mk[EAP_PAX_MK_LEN];
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u8 ck[EAP_PAX_CK_LEN];
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u8 ick[EAP_PAX_ICK_LEN];
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2014-12-01 00:45:17 +01:00
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u8 mid[EAP_PAX_MID_LEN];
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2008-02-28 02:34:43 +01:00
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int keys_set;
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char *cid;
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size_t cid_len;
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};
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static void * eap_pax_init(struct eap_sm *sm)
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{
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struct eap_pax_data *data;
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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->state = PAX_STD_1;
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/*
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* TODO: make this configurable once EAP_PAX_HMAC_SHA256_128 is
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* supported
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*/
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data->mac_id = EAP_PAX_MAC_HMAC_SHA1_128;
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return data;
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}
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static void eap_pax_reset(struct eap_sm *sm, void *priv)
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{
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struct eap_pax_data *data = priv;
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os_free(data->cid);
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2014-06-30 00:48:41 +02:00
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bin_clear_free(data, sizeof(*data));
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2008-02-28 02:34:43 +01:00
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}
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static struct wpabuf * eap_pax_build_std_1(struct eap_sm *sm,
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struct eap_pax_data *data, u8 id)
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{
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struct wpabuf *req;
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struct eap_pax_hdr *pax;
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u8 *pos;
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wpa_printf(MSG_DEBUG, "EAP-PAX: PAX_STD-1 (sending)");
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2010-11-24 00:05:20 +01:00
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if (random_get_bytes(data->rand.r.x, EAP_PAX_RAND_LEN)) {
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2008-02-28 02:34:43 +01:00
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wpa_printf(MSG_ERROR, "EAP-PAX: Failed to get random data");
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data->state = FAILURE;
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return NULL;
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}
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req = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_PAX,
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sizeof(*pax) + 2 + EAP_PAX_RAND_LEN +
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EAP_PAX_ICV_LEN, EAP_CODE_REQUEST, id);
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if (req == NULL) {
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wpa_printf(MSG_ERROR, "EAP-PAX: Failed to allocate memory "
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"request");
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data->state = FAILURE;
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return NULL;
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}
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pax = wpabuf_put(req, sizeof(*pax));
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pax->op_code = EAP_PAX_OP_STD_1;
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pax->flags = 0;
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pax->mac_id = data->mac_id;
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pax->dh_group_id = EAP_PAX_DH_GROUP_NONE;
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pax->public_key_id = EAP_PAX_PUBLIC_KEY_NONE;
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wpabuf_put_be16(req, EAP_PAX_RAND_LEN);
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wpabuf_put_data(req, data->rand.r.x, EAP_PAX_RAND_LEN);
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wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: A = X (server rand)",
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data->rand.r.x, EAP_PAX_RAND_LEN);
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pos = wpabuf_put(req, EAP_PAX_MAC_LEN);
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2019-04-19 23:08:00 +02:00
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if (eap_pax_mac(data->mac_id, (u8 *) "", 0,
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wpabuf_mhead(req), wpabuf_len(req) - EAP_PAX_ICV_LEN,
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NULL, 0, NULL, 0, pos) < 0) {
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wpa_printf(MSG_ERROR, "EAP-PAX: Failed to calculate ICV");
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data->state = FAILURE;
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wpabuf_free(req);
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return NULL;
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}
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2008-02-28 02:34:43 +01:00
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wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: ICV", pos, EAP_PAX_ICV_LEN);
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return req;
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}
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static struct wpabuf * eap_pax_build_std_3(struct eap_sm *sm,
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struct eap_pax_data *data, u8 id)
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{
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struct wpabuf *req;
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struct eap_pax_hdr *pax;
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u8 *pos;
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wpa_printf(MSG_DEBUG, "EAP-PAX: PAX_STD-3 (sending)");
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req = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_PAX,
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sizeof(*pax) + 2 + EAP_PAX_MAC_LEN +
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EAP_PAX_ICV_LEN, EAP_CODE_REQUEST, id);
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if (req == NULL) {
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wpa_printf(MSG_ERROR, "EAP-PAX: Failed to allocate memory "
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"request");
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data->state = FAILURE;
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return NULL;
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}
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pax = wpabuf_put(req, sizeof(*pax));
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pax->op_code = EAP_PAX_OP_STD_3;
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pax->flags = 0;
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pax->mac_id = data->mac_id;
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pax->dh_group_id = EAP_PAX_DH_GROUP_NONE;
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pax->public_key_id = EAP_PAX_PUBLIC_KEY_NONE;
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wpabuf_put_be16(req, EAP_PAX_MAC_LEN);
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pos = wpabuf_put(req, EAP_PAX_MAC_LEN);
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2019-04-19 23:08:00 +02:00
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if (eap_pax_mac(data->mac_id, data->ck, EAP_PAX_CK_LEN,
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data->rand.r.y, EAP_PAX_RAND_LEN,
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(u8 *) data->cid, data->cid_len, NULL, 0, pos) < 0) {
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wpa_printf(MSG_ERROR, "EAP-PAX: Failed to calculate MAC");
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data->state = FAILURE;
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wpabuf_free(req);
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return NULL;
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}
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2008-02-28 02:34:43 +01:00
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wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: MAC_CK(B, CID)",
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pos, EAP_PAX_MAC_LEN);
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/* Optional ADE could be added here, if needed */
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pos = wpabuf_put(req, EAP_PAX_MAC_LEN);
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2019-04-19 23:08:00 +02:00
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if (eap_pax_mac(data->mac_id, data->ick, EAP_PAX_ICK_LEN,
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wpabuf_mhead(req), wpabuf_len(req) - EAP_PAX_ICV_LEN,
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NULL, 0, NULL, 0, pos) < 0) {
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wpa_printf(MSG_ERROR, "EAP-PAX: Failed to calculate ICV");
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data->state = FAILURE;
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wpabuf_free(req);
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return NULL;
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}
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2008-02-28 02:34:43 +01:00
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wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: ICV", pos, EAP_PAX_ICV_LEN);
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return req;
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}
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static struct wpabuf * eap_pax_buildReq(struct eap_sm *sm, void *priv, u8 id)
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{
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struct eap_pax_data *data = priv;
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switch (data->state) {
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case PAX_STD_1:
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return eap_pax_build_std_1(sm, data, id);
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case PAX_STD_3:
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return eap_pax_build_std_3(sm, data, id);
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default:
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wpa_printf(MSG_DEBUG, "EAP-PAX: Unknown state %d in buildReq",
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data->state);
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break;
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}
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return NULL;
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}
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static Boolean eap_pax_check(struct eap_sm *sm, void *priv,
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struct wpabuf *respData)
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{
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struct eap_pax_data *data = priv;
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struct eap_pax_hdr *resp;
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const u8 *pos;
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size_t len, mlen;
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u8 icvbuf[EAP_PAX_ICV_LEN], *icv;
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pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_PAX, respData, &len);
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2019-04-19 23:19:02 +02:00
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if (pos == NULL || len < sizeof(*resp) + EAP_PAX_ICV_LEN) {
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2008-02-28 02:34:43 +01:00
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wpa_printf(MSG_INFO, "EAP-PAX: Invalid frame");
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return TRUE;
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}
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mlen = sizeof(struct eap_hdr) + 1 + len;
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resp = (struct eap_pax_hdr *) pos;
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wpa_printf(MSG_DEBUG, "EAP-PAX: received frame: op_code 0x%x "
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"flags 0x%x mac_id 0x%x dh_group_id 0x%x "
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"public_key_id 0x%x",
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resp->op_code, resp->flags, resp->mac_id, resp->dh_group_id,
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resp->public_key_id);
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wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: received payload",
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(u8 *) (resp + 1), len - sizeof(*resp) - EAP_PAX_ICV_LEN);
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if (data->state == PAX_STD_1 &&
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resp->op_code != EAP_PAX_OP_STD_2) {
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wpa_printf(MSG_DEBUG, "EAP-PAX: Expected PAX_STD-2 - "
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"ignore op %d", resp->op_code);
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return TRUE;
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}
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if (data->state == PAX_STD_3 &&
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resp->op_code != EAP_PAX_OP_ACK) {
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wpa_printf(MSG_DEBUG, "EAP-PAX: Expected PAX-ACK - "
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"ignore op %d", resp->op_code);
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return TRUE;
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}
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if (resp->op_code != EAP_PAX_OP_STD_2 &&
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resp->op_code != EAP_PAX_OP_ACK) {
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wpa_printf(MSG_DEBUG, "EAP-PAX: Unknown op_code 0x%x",
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resp->op_code);
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}
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if (data->mac_id != resp->mac_id) {
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wpa_printf(MSG_DEBUG, "EAP-PAX: Expected MAC ID 0x%x, "
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"received 0x%x", data->mac_id, resp->mac_id);
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return TRUE;
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}
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if (resp->dh_group_id != EAP_PAX_DH_GROUP_NONE) {
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wpa_printf(MSG_INFO, "EAP-PAX: Expected DH Group ID 0x%x, "
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"received 0x%x", EAP_PAX_DH_GROUP_NONE,
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resp->dh_group_id);
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return TRUE;
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}
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if (resp->public_key_id != EAP_PAX_PUBLIC_KEY_NONE) {
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wpa_printf(MSG_INFO, "EAP-PAX: Expected Public Key ID 0x%x, "
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"received 0x%x", EAP_PAX_PUBLIC_KEY_NONE,
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resp->public_key_id);
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return TRUE;
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}
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if (resp->flags & EAP_PAX_FLAGS_MF) {
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/* TODO: add support for reassembling fragments */
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wpa_printf(MSG_INFO, "EAP-PAX: fragmentation not supported");
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return TRUE;
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}
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if (resp->flags & EAP_PAX_FLAGS_CE) {
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wpa_printf(MSG_INFO, "EAP-PAX: Unexpected CE flag");
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return TRUE;
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}
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if (data->keys_set) {
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if (len - sizeof(*resp) < EAP_PAX_ICV_LEN) {
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wpa_printf(MSG_INFO, "EAP-PAX: No ICV in the packet");
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return TRUE;
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}
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icv = wpabuf_mhead_u8(respData) + mlen - EAP_PAX_ICV_LEN;
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wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: ICV", icv, EAP_PAX_ICV_LEN);
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2019-04-19 23:08:00 +02:00
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if (eap_pax_mac(data->mac_id, data->ick, EAP_PAX_ICK_LEN,
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wpabuf_mhead(respData),
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wpabuf_len(respData) - EAP_PAX_ICV_LEN,
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2019-05-08 18:02:19 +02:00
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NULL, 0, NULL, 0, icvbuf) < 0) {
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wpa_printf(MSG_INFO,
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"EAP-PAX: Failed to calculate ICV");
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return TRUE;
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}
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if (os_memcmp_const(icvbuf, icv, EAP_PAX_ICV_LEN) != 0) {
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2008-02-28 02:34:43 +01:00
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wpa_printf(MSG_INFO, "EAP-PAX: Invalid ICV");
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wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: Expected ICV",
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icvbuf, EAP_PAX_ICV_LEN);
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return TRUE;
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}
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}
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return FALSE;
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}
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static void eap_pax_process_std_2(struct eap_sm *sm,
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struct eap_pax_data *data,
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struct wpabuf *respData)
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{
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struct eap_pax_hdr *resp;
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u8 mac[EAP_PAX_MAC_LEN], icvbuf[EAP_PAX_ICV_LEN];
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const u8 *pos;
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2014-09-07 16:10:33 +02:00
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size_t len, left, cid_len;
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2008-02-28 02:34:43 +01:00
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int i;
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if (data->state != PAX_STD_1)
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return;
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wpa_printf(MSG_DEBUG, "EAP-PAX: Received PAX_STD-2");
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pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_PAX, respData, &len);
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if (pos == NULL || len < sizeof(*resp) + EAP_PAX_ICV_LEN)
|
|
|
|
return;
|
|
|
|
|
|
|
|
resp = (struct eap_pax_hdr *) pos;
|
|
|
|
pos = (u8 *) (resp + 1);
|
|
|
|
left = len - sizeof(*resp);
|
|
|
|
|
|
|
|
if (left < 2 + EAP_PAX_RAND_LEN ||
|
|
|
|
WPA_GET_BE16(pos) != EAP_PAX_RAND_LEN) {
|
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Too short PAX_STD-2 (B)");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
pos += 2;
|
|
|
|
left -= 2;
|
|
|
|
os_memcpy(data->rand.r.y, pos, EAP_PAX_RAND_LEN);
|
|
|
|
wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: Y (client rand)",
|
|
|
|
data->rand.r.y, EAP_PAX_RAND_LEN);
|
|
|
|
pos += EAP_PAX_RAND_LEN;
|
|
|
|
left -= EAP_PAX_RAND_LEN;
|
|
|
|
|
|
|
|
if (left < 2 || (size_t) 2 + WPA_GET_BE16(pos) > left) {
|
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Too short PAX_STD-2 (CID)");
|
|
|
|
return;
|
|
|
|
}
|
2014-09-07 16:10:33 +02:00
|
|
|
cid_len = WPA_GET_BE16(pos);
|
|
|
|
if (cid_len > 1500) {
|
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Too long CID");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
data->cid_len = cid_len;
|
2008-02-28 02:34:43 +01:00
|
|
|
os_free(data->cid);
|
2017-03-07 10:17:23 +01:00
|
|
|
data->cid = os_memdup(pos + 2, data->cid_len);
|
2008-02-28 02:34:43 +01:00
|
|
|
if (data->cid == NULL) {
|
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Failed to allocate memory for "
|
|
|
|
"CID");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
pos += 2 + data->cid_len;
|
|
|
|
left -= 2 + data->cid_len;
|
|
|
|
wpa_hexdump_ascii(MSG_MSGDUMP, "EAP-PAX: CID",
|
|
|
|
(u8 *) data->cid, data->cid_len);
|
|
|
|
|
|
|
|
if (left < 2 + EAP_PAX_MAC_LEN ||
|
|
|
|
WPA_GET_BE16(pos) != EAP_PAX_MAC_LEN) {
|
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Too short PAX_STD-2 (MAC_CK)");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
pos += 2;
|
|
|
|
left -= 2;
|
|
|
|
wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: MAC_CK(A, B, CID)",
|
|
|
|
pos, EAP_PAX_MAC_LEN);
|
|
|
|
|
|
|
|
if (eap_user_get(sm, (u8 *) data->cid, data->cid_len, 0) < 0) {
|
|
|
|
wpa_hexdump_ascii(MSG_DEBUG, "EAP-PAX: unknown CID",
|
|
|
|
(u8 *) data->cid, data->cid_len);
|
|
|
|
data->state = FAILURE;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0;
|
|
|
|
i < EAP_MAX_METHODS &&
|
|
|
|
(sm->user->methods[i].vendor != EAP_VENDOR_IETF ||
|
|
|
|
sm->user->methods[i].method != EAP_TYPE_NONE);
|
|
|
|
i++) {
|
|
|
|
if (sm->user->methods[i].vendor == EAP_VENDOR_IETF &&
|
|
|
|
sm->user->methods[i].method == EAP_TYPE_PAX)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i >= EAP_MAX_METHODS ||
|
|
|
|
sm->user->methods[i].vendor != EAP_VENDOR_IETF ||
|
|
|
|
sm->user->methods[i].method != EAP_TYPE_PAX) {
|
|
|
|
wpa_hexdump_ascii(MSG_DEBUG,
|
|
|
|
"EAP-PAX: EAP-PAX not enabled for CID",
|
|
|
|
(u8 *) data->cid, data->cid_len);
|
|
|
|
data->state = FAILURE;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (sm->user->password == NULL ||
|
|
|
|
sm->user->password_len != EAP_PAX_AK_LEN) {
|
|
|
|
wpa_hexdump_ascii(MSG_DEBUG, "EAP-PAX: invalid password in "
|
|
|
|
"user database for CID",
|
|
|
|
(u8 *) data->cid, data->cid_len);
|
|
|
|
data->state = FAILURE;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
os_memcpy(data->ak, sm->user->password, EAP_PAX_AK_LEN);
|
|
|
|
|
|
|
|
if (eap_pax_initial_key_derivation(data->mac_id, data->ak,
|
|
|
|
data->rand.e, data->mk, data->ck,
|
2014-12-01 00:45:17 +01:00
|
|
|
data->ick, data->mid) < 0) {
|
2008-02-28 02:34:43 +01:00
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Failed to complete initial "
|
|
|
|
"key derivation");
|
|
|
|
data->state = FAILURE;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
data->keys_set = 1;
|
|
|
|
|
2019-04-19 23:08:00 +02:00
|
|
|
if (eap_pax_mac(data->mac_id, data->ck, EAP_PAX_CK_LEN,
|
|
|
|
data->rand.r.x, EAP_PAX_RAND_LEN,
|
|
|
|
data->rand.r.y, EAP_PAX_RAND_LEN,
|
2019-05-08 18:02:19 +02:00
|
|
|
(u8 *) data->cid, data->cid_len, mac) < 0) {
|
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Failed to calculate MAC_CK");
|
|
|
|
data->state = FAILURE;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (os_memcmp_const(mac, pos, EAP_PAX_MAC_LEN) != 0) {
|
2008-02-28 02:34:43 +01:00
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Invalid MAC_CK(A, B, CID) in "
|
|
|
|
"PAX_STD-2");
|
|
|
|
wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: Expected MAC_CK(A, B, CID)",
|
|
|
|
mac, EAP_PAX_MAC_LEN);
|
|
|
|
data->state = FAILURE;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
pos += EAP_PAX_MAC_LEN;
|
|
|
|
left -= EAP_PAX_MAC_LEN;
|
|
|
|
|
|
|
|
if (left < EAP_PAX_ICV_LEN) {
|
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Too short ICV (%lu) in "
|
|
|
|
"PAX_STD-2", (unsigned long) left);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: ICV", pos, EAP_PAX_ICV_LEN);
|
2019-04-19 23:08:00 +02:00
|
|
|
if (eap_pax_mac(data->mac_id, data->ick, EAP_PAX_ICK_LEN,
|
|
|
|
wpabuf_head(respData),
|
|
|
|
wpabuf_len(respData) - EAP_PAX_ICV_LEN, NULL, 0,
|
2019-05-08 18:02:19 +02:00
|
|
|
NULL, 0, icvbuf) < 0) {
|
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Failed to calculate ICV");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (os_memcmp_const(icvbuf, pos, EAP_PAX_ICV_LEN) != 0) {
|
2008-02-28 02:34:43 +01:00
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Invalid ICV in PAX_STD-2");
|
|
|
|
wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: Expected ICV",
|
|
|
|
icvbuf, EAP_PAX_ICV_LEN);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
pos += EAP_PAX_ICV_LEN;
|
|
|
|
left -= EAP_PAX_ICV_LEN;
|
|
|
|
|
|
|
|
if (left > 0) {
|
|
|
|
wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: ignored extra payload",
|
|
|
|
pos, left);
|
|
|
|
}
|
|
|
|
|
|
|
|
data->state = PAX_STD_3;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void eap_pax_process_ack(struct eap_sm *sm,
|
|
|
|
struct eap_pax_data *data,
|
|
|
|
struct wpabuf *respData)
|
|
|
|
{
|
|
|
|
if (data->state != PAX_STD_3)
|
|
|
|
return;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "EAP-PAX: Received PAX-ACK - authentication "
|
|
|
|
"completed successfully");
|
|
|
|
data->state = SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void eap_pax_process(struct eap_sm *sm, void *priv,
|
|
|
|
struct wpabuf *respData)
|
|
|
|
{
|
|
|
|
struct eap_pax_data *data = priv;
|
|
|
|
struct eap_pax_hdr *resp;
|
|
|
|
const u8 *pos;
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
if (sm->user == NULL || sm->user->password == NULL) {
|
|
|
|
wpa_printf(MSG_INFO, "EAP-PAX: Plaintext password not "
|
|
|
|
"configured");
|
|
|
|
data->state = FAILURE;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_PAX, respData, &len);
|
|
|
|
if (pos == NULL || len < sizeof(*resp))
|
|
|
|
return;
|
|
|
|
|
|
|
|
resp = (struct eap_pax_hdr *) pos;
|
|
|
|
|
|
|
|
switch (resp->op_code) {
|
|
|
|
case EAP_PAX_OP_STD_2:
|
|
|
|
eap_pax_process_std_2(sm, data, respData);
|
|
|
|
break;
|
|
|
|
case EAP_PAX_OP_ACK:
|
|
|
|
eap_pax_process_ack(sm, data, respData);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static Boolean eap_pax_isDone(struct eap_sm *sm, void *priv)
|
|
|
|
{
|
|
|
|
struct eap_pax_data *data = priv;
|
|
|
|
return data->state == SUCCESS || data->state == FAILURE;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static u8 * eap_pax_getKey(struct eap_sm *sm, void *priv, size_t *len)
|
|
|
|
{
|
|
|
|
struct eap_pax_data *data = priv;
|
|
|
|
u8 *key;
|
|
|
|
|
|
|
|
if (data->state != SUCCESS)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
key = os_malloc(EAP_MSK_LEN);
|
|
|
|
if (key == NULL)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
*len = EAP_MSK_LEN;
|
|
|
|
eap_pax_kdf(data->mac_id, data->mk, EAP_PAX_MK_LEN,
|
|
|
|
"Master Session Key", data->rand.e, 2 * EAP_PAX_RAND_LEN,
|
|
|
|
EAP_MSK_LEN, key);
|
|
|
|
|
|
|
|
return key;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static u8 * eap_pax_get_emsk(struct eap_sm *sm, void *priv, size_t *len)
|
|
|
|
{
|
|
|
|
struct eap_pax_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;
|
|
|
|
eap_pax_kdf(data->mac_id, data->mk, EAP_PAX_MK_LEN,
|
|
|
|
"Extended Master Session Key",
|
|
|
|
data->rand.e, 2 * EAP_PAX_RAND_LEN,
|
|
|
|
EAP_EMSK_LEN, key);
|
|
|
|
|
|
|
|
return key;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static Boolean eap_pax_isSuccess(struct eap_sm *sm, void *priv)
|
|
|
|
{
|
|
|
|
struct eap_pax_data *data = priv;
|
|
|
|
return data->state == SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2014-12-01 00:45:17 +01:00
|
|
|
static u8 * eap_pax_get_session_id(struct eap_sm *sm, void *priv, size_t *len)
|
|
|
|
{
|
|
|
|
struct eap_pax_data *data = priv;
|
|
|
|
u8 *sid;
|
|
|
|
|
|
|
|
if (data->state != SUCCESS)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
sid = os_malloc(1 + EAP_PAX_MID_LEN);
|
|
|
|
if (sid == NULL)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
*len = 1 + EAP_PAX_MID_LEN;
|
|
|
|
sid[0] = EAP_TYPE_PAX;
|
|
|
|
os_memcpy(sid + 1, data->mid, EAP_PAX_MID_LEN);
|
|
|
|
|
|
|
|
return sid;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-02-28 02:34:43 +01:00
|
|
|
int eap_server_pax_register(void)
|
|
|
|
{
|
|
|
|
struct eap_method *eap;
|
|
|
|
|
|
|
|
eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
|
|
|
|
EAP_VENDOR_IETF, EAP_TYPE_PAX, "PAX");
|
|
|
|
if (eap == NULL)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
eap->init = eap_pax_init;
|
|
|
|
eap->reset = eap_pax_reset;
|
|
|
|
eap->buildReq = eap_pax_buildReq;
|
|
|
|
eap->check = eap_pax_check;
|
|
|
|
eap->process = eap_pax_process;
|
|
|
|
eap->isDone = eap_pax_isDone;
|
|
|
|
eap->getKey = eap_pax_getKey;
|
|
|
|
eap->isSuccess = eap_pax_isSuccess;
|
|
|
|
eap->get_emsk = eap_pax_get_emsk;
|
2014-12-01 00:45:17 +01:00
|
|
|
eap->getSessionId = eap_pax_get_session_id;
|
2008-02-28 02:34:43 +01:00
|
|
|
|
2016-01-13 22:35:53 +01:00
|
|
|
return eap_server_method_register(eap);
|
2008-02-28 02:34:43 +01:00
|
|
|
}
|