/*
* WPA Supplicant - WPA state machine and EAPOL-Key processing
- * Copyright (c) 2003-2010, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2003-2015, 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.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "includes.h"
#include "common.h"
#include "crypto/aes_wrap.h"
#include "crypto/crypto.h"
+#include "crypto/random.h"
#include "common/ieee802_11_defs.h"
#include "eapol_supp/eapol_supp_sm.h"
#include "wpa.h"
* wpa_eapol_key_send - Send WPA/RSN EAPOL-Key message
* @sm: Pointer to WPA state machine data from wpa_sm_init()
* @kck: Key Confirmation Key (KCK, part of PTK)
+ * @kck_len: KCK length in octets
* @ver: Version field from Key Info
* @dest: Destination address for the frame
* @proto: Ethertype (usually ETH_P_EAPOL)
* @msg_len: Length of message
* @key_mic: Pointer to the buffer to which the EAPOL-Key MIC is written
*/
-void wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck,
+void wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck, size_t kck_len,
int ver, const u8 *dest, u16 proto,
u8 *msg, size_t msg_len, u8 *key_mic)
{
+ size_t mic_len = wpa_mic_len(sm->key_mgmt);
+
if (is_zero_ether_addr(dest) && is_zero_ether_addr(sm->bssid)) {
/*
* Association event was not yet received; try to fetch
* BSSID from the driver.
*/
if (wpa_sm_get_bssid(sm, sm->bssid) < 0) {
- wpa_printf(MSG_DEBUG, "WPA: Failed to read BSSID for "
- "EAPOL-Key destination address");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: Failed to read BSSID for "
+ "EAPOL-Key destination address");
} else {
dest = sm->bssid;
- wpa_printf(MSG_DEBUG, "WPA: Use BSSID (" MACSTR
- ") as the destination for EAPOL-Key",
- MAC2STR(dest));
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: Use BSSID (" MACSTR
+ ") as the destination for EAPOL-Key",
+ MAC2STR(dest));
}
}
if (key_mic &&
- wpa_eapol_key_mic(kck, ver, msg, msg_len, key_mic)) {
- wpa_printf(MSG_ERROR, "WPA: Failed to generate EAPOL-Key "
- "version %d MIC", ver);
+ wpa_eapol_key_mic(kck, kck_len, sm->key_mgmt, ver, msg, msg_len,
+ key_mic)) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_ERROR,
+ "WPA: Failed to generate EAPOL-Key version %d key_mgmt 0x%x MIC",
+ ver, sm->key_mgmt);
goto out;
}
+ wpa_hexdump_key(MSG_DEBUG, "WPA: KCK", kck, kck_len);
+ wpa_hexdump(MSG_DEBUG, "WPA: Derived Key MIC", key_mic, mic_len);
wpa_hexdump(MSG_MSGDUMP, "WPA: TX EAPOL-Key", msg, msg_len);
wpa_sm_ether_send(sm, dest, proto, msg, msg_len);
eapol_sm_notify_tx_eapol_key(sm->eapol);
*/
void wpa_sm_key_request(struct wpa_sm *sm, int error, int pairwise)
{
- size_t rlen;
+ size_t mic_len, hdrlen, rlen;
struct wpa_eapol_key *reply;
+ struct wpa_eapol_key_192 *reply192;
int key_info, ver;
- u8 bssid[ETH_ALEN], *rbuf;
+ u8 bssid[ETH_ALEN], *rbuf, *key_mic;
- if (wpa_key_mgmt_ft(sm->key_mgmt) || wpa_key_mgmt_sha256(sm->key_mgmt))
+ if (sm->key_mgmt == WPA_KEY_MGMT_OSEN ||
+ wpa_key_mgmt_suite_b(sm->key_mgmt))
+ ver = WPA_KEY_INFO_TYPE_AKM_DEFINED;
+ else if (wpa_key_mgmt_ft(sm->key_mgmt) ||
+ wpa_key_mgmt_sha256(sm->key_mgmt))
ver = WPA_KEY_INFO_TYPE_AES_128_CMAC;
- else if (sm->pairwise_cipher == WPA_CIPHER_CCMP)
+ else if (sm->pairwise_cipher != WPA_CIPHER_TKIP)
ver = WPA_KEY_INFO_TYPE_HMAC_SHA1_AES;
else
ver = WPA_KEY_INFO_TYPE_HMAC_MD5_RC4;
if (wpa_sm_get_bssid(sm, bssid) < 0) {
- wpa_printf(MSG_WARNING, "Failed to read BSSID for EAPOL-Key "
- "request");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "Failed to read BSSID for EAPOL-Key request");
return;
}
+ mic_len = wpa_mic_len(sm->key_mgmt);
+ hdrlen = mic_len == 24 ? sizeof(*reply192) : sizeof(*reply);
rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY, NULL,
- sizeof(*reply), &rlen, (void *) &reply);
+ hdrlen, &rlen, (void *) &reply);
if (rbuf == NULL)
return;
+ reply192 = (struct wpa_eapol_key_192 *) reply;
- reply->type = sm->proto == WPA_PROTO_RSN ?
+ reply->type = (sm->proto == WPA_PROTO_RSN ||
+ sm->proto == WPA_PROTO_OSEN) ?
EAPOL_KEY_TYPE_RSN : EAPOL_KEY_TYPE_WPA;
key_info = WPA_KEY_INFO_REQUEST | ver;
if (sm->ptk_set)
WPA_REPLAY_COUNTER_LEN);
inc_byte_array(sm->request_counter, WPA_REPLAY_COUNTER_LEN);
- WPA_PUT_BE16(reply->key_data_length, 0);
+ if (mic_len == 24)
+ WPA_PUT_BE16(reply192->key_data_length, 0);
+ else
+ WPA_PUT_BE16(reply->key_data_length, 0);
+ if (!(key_info & WPA_KEY_INFO_MIC))
+ key_mic = NULL;
+ else
+ key_mic = reply192->key_mic; /* same offset in reply */
- wpa_printf(MSG_INFO, "WPA: Sending EAPOL-Key Request (error=%d "
- "pairwise=%d ptk_set=%d len=%lu)",
- error, pairwise, sm->ptk_set, (unsigned long) rlen);
- wpa_eapol_key_send(sm, sm->ptk.kck, ver, bssid, ETH_P_EAPOL,
- rbuf, rlen, key_info & WPA_KEY_INFO_MIC ?
- reply->key_mic : NULL);
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: Sending EAPOL-Key Request (error=%d "
+ "pairwise=%d ptk_set=%d len=%lu)",
+ error, pairwise, sm->ptk_set, (unsigned long) rlen);
+ wpa_eapol_key_send(sm, sm->ptk.kck, sm->ptk.kck_len, ver, bssid,
+ ETH_P_EAPOL, rbuf, rlen, key_mic);
+}
+
+
+static void wpa_supplicant_key_mgmt_set_pmk(struct wpa_sm *sm)
+{
+#ifdef CONFIG_IEEE80211R
+ if (sm->key_mgmt == WPA_KEY_MGMT_FT_IEEE8021X) {
+ if (wpa_sm_key_mgmt_set_pmk(sm, sm->xxkey, sm->xxkey_len))
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: Cannot set low order 256 bits of MSK for key management offload");
+ } else {
+#endif /* CONFIG_IEEE80211R */
+ if (wpa_sm_key_mgmt_set_pmk(sm, sm->pmk, sm->pmk_len))
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: Cannot set PMK for key management offload");
+#ifdef CONFIG_IEEE80211R
+ }
+#endif /* CONFIG_IEEE80211R */
}
* not have enough time to get the association information
* event before receiving this 1/4 message, so try to find a
* matching PMKSA cache entry here. */
- sm->cur_pmksa = pmksa_cache_get(sm->pmksa, src_addr, pmkid);
+ sm->cur_pmksa = pmksa_cache_get(sm->pmksa, src_addr, pmkid,
+ NULL);
if (sm->cur_pmksa) {
- wpa_printf(MSG_DEBUG, "RSN: found matching PMKID from "
- "PMKSA cache");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: found matching PMKID from PMKSA cache");
} else {
- wpa_printf(MSG_DEBUG, "RSN: no matching PMKID found");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: no matching PMKID found");
abort_cached = 1;
}
}
if (pmkid && sm->cur_pmksa &&
- os_memcmp(pmkid, sm->cur_pmksa->pmkid, PMKID_LEN) == 0) {
+ os_memcmp_const(pmkid, sm->cur_pmksa->pmkid, PMKID_LEN) == 0) {
wpa_hexdump(MSG_DEBUG, "RSN: matched PMKID", pmkid, PMKID_LEN);
wpa_sm_set_pmk_from_pmksa(sm);
wpa_hexdump_key(MSG_DEBUG, "RSN: PMK from PMKSA cache",
#endif /* CONFIG_IEEE80211R */
}
if (res == 0) {
+ struct rsn_pmksa_cache_entry *sa = NULL;
wpa_hexdump_key(MSG_DEBUG, "WPA: PMK from EAPOL state "
"machines", sm->pmk, pmk_len);
sm->pmk_len = pmk_len;
- if (sm->proto == WPA_PROTO_RSN) {
- pmksa_cache_add(sm->pmksa, sm->pmk, pmk_len,
- src_addr, sm->own_addr,
- sm->network_ctx, sm->key_mgmt);
+ wpa_supplicant_key_mgmt_set_pmk(sm);
+ if (sm->proto == WPA_PROTO_RSN &&
+ !wpa_key_mgmt_suite_b(sm->key_mgmt) &&
+ !wpa_key_mgmt_ft(sm->key_mgmt)) {
+ sa = pmksa_cache_add(sm->pmksa,
+ sm->pmk, pmk_len,
+ NULL, 0,
+ src_addr, sm->own_addr,
+ sm->network_ctx,
+ sm->key_mgmt);
}
if (!sm->cur_pmksa && pmkid &&
- pmksa_cache_get(sm->pmksa, src_addr, pmkid)) {
- wpa_printf(MSG_DEBUG, "RSN: the new PMK "
- "matches with the PMKID");
+ pmksa_cache_get(sm->pmksa, src_addr, pmkid, NULL))
+ {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: the new PMK matches with the "
+ "PMKID");
abort_cached = 0;
+ } else if (sa && !sm->cur_pmksa && pmkid) {
+ /*
+ * It looks like the authentication server
+ * derived mismatching MSK. This should not
+ * really happen, but bugs happen.. There is not
+ * much we can do here without knowing what
+ * exactly caused the server to misbehave.
+ */
+ wpa_dbg(sm->ctx->msg_ctx, MSG_INFO,
+ "RSN: PMKID mismatch - authentication server may have derived different MSK?!");
+ return -1;
}
+
+ if (!sm->cur_pmksa)
+ sm->cur_pmksa = sa;
} else {
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
"WPA: Failed to get master session key from "
- "EAPOL state machines");
- wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
- "WPA: Key handshake aborted");
+ "EAPOL state machines - key handshake "
+ "aborted");
if (sm->cur_pmksa) {
- wpa_printf(MSG_DEBUG, "RSN: Cancelled PMKSA "
- "caching attempt");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: Cancelled PMKSA caching "
+ "attempt");
sm->cur_pmksa = NULL;
abort_cached = 1;
} else if (!abort_cached) {
}
}
- if (abort_cached && wpa_key_mgmt_wpa_ieee8021x(sm->key_mgmt)) {
+ if (abort_cached && wpa_key_mgmt_wpa_ieee8021x(sm->key_mgmt) &&
+ !wpa_key_mgmt_suite_b(sm->key_mgmt) &&
+ !wpa_key_mgmt_ft(sm->key_mgmt) && sm->key_mgmt != WPA_KEY_MGMT_OSEN)
+ {
/* Send EAPOL-Start to trigger full EAP authentication. */
u8 *buf;
size_t buflen;
- wpa_printf(MSG_DEBUG, "RSN: no PMKSA entry found - trigger "
- "full EAP authentication");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: no PMKSA entry found - trigger "
+ "full EAP authentication");
buf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_START,
NULL, 0, &buflen, NULL);
if (buf) {
const u8 *wpa_ie, size_t wpa_ie_len,
struct wpa_ptk *ptk)
{
- size_t rlen;
+ size_t mic_len, hdrlen, rlen;
struct wpa_eapol_key *reply;
- u8 *rbuf;
+ struct wpa_eapol_key_192 *reply192;
+ u8 *rbuf, *key_mic;
u8 *rsn_ie_buf = NULL;
if (wpa_ie == NULL) {
- wpa_printf(MSG_WARNING, "WPA: No wpa_ie set - cannot "
- "generate msg 2/4");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, "WPA: No wpa_ie set - "
+ "cannot generate msg 2/4");
return -1;
}
wpa_hexdump(MSG_DEBUG, "WPA: WPA IE for msg 2/4", wpa_ie, wpa_ie_len);
+ mic_len = wpa_mic_len(sm->key_mgmt);
+ hdrlen = mic_len == 24 ? sizeof(*reply192) : sizeof(*reply);
rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY,
- NULL, sizeof(*reply) + wpa_ie_len,
+ NULL, hdrlen + wpa_ie_len,
&rlen, (void *) &reply);
if (rbuf == NULL) {
os_free(rsn_ie_buf);
return -1;
}
+ reply192 = (struct wpa_eapol_key_192 *) reply;
- reply->type = sm->proto == WPA_PROTO_RSN ?
+ reply->type = (sm->proto == WPA_PROTO_RSN ||
+ sm->proto == WPA_PROTO_OSEN) ?
EAPOL_KEY_TYPE_RSN : EAPOL_KEY_TYPE_WPA;
WPA_PUT_BE16(reply->key_info,
ver | WPA_KEY_INFO_KEY_TYPE | WPA_KEY_INFO_MIC);
- if (sm->proto == WPA_PROTO_RSN)
+ if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN)
WPA_PUT_BE16(reply->key_length, 0);
else
os_memcpy(reply->key_length, key->key_length, 2);
os_memcpy(reply->replay_counter, key->replay_counter,
WPA_REPLAY_COUNTER_LEN);
+ wpa_hexdump(MSG_DEBUG, "WPA: Replay Counter", reply->replay_counter,
+ WPA_REPLAY_COUNTER_LEN);
- WPA_PUT_BE16(reply->key_data_length, wpa_ie_len);
- os_memcpy(reply + 1, wpa_ie, wpa_ie_len);
+ key_mic = reply192->key_mic; /* same offset for reply and reply192 */
+ if (mic_len == 24) {
+ WPA_PUT_BE16(reply192->key_data_length, wpa_ie_len);
+ os_memcpy(reply192 + 1, wpa_ie, wpa_ie_len);
+ } else {
+ WPA_PUT_BE16(reply->key_data_length, wpa_ie_len);
+ os_memcpy(reply + 1, wpa_ie, wpa_ie_len);
+ }
os_free(rsn_ie_buf);
os_memcpy(reply->key_nonce, nonce, WPA_NONCE_LEN);
- wpa_printf(MSG_DEBUG, "WPA: Sending EAPOL-Key 2/4");
- wpa_eapol_key_send(sm, ptk->kck, ver, dst, ETH_P_EAPOL,
- rbuf, rlen, reply->key_mic);
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Sending EAPOL-Key 2/4");
+ wpa_eapol_key_send(sm, ptk->kck, ptk->kck_len, ver, dst, ETH_P_EAPOL,
+ rbuf, rlen, key_mic);
return 0;
}
static int wpa_derive_ptk(struct wpa_sm *sm, const unsigned char *src_addr,
- const struct wpa_eapol_key *key,
- struct wpa_ptk *ptk)
+ const struct wpa_eapol_key *key, struct wpa_ptk *ptk)
{
- size_t ptk_len = sm->pairwise_cipher == WPA_CIPHER_CCMP ? 48 : 64;
#ifdef CONFIG_IEEE80211R
if (wpa_key_mgmt_ft(sm->key_mgmt))
- return wpa_derive_ptk_ft(sm, src_addr, key, ptk, ptk_len);
+ return wpa_derive_ptk_ft(sm, src_addr, key, ptk);
#endif /* CONFIG_IEEE80211R */
- wpa_pmk_to_ptk(sm->pmk, sm->pmk_len, "Pairwise key expansion",
- sm->own_addr, sm->bssid, sm->snonce, key->key_nonce,
- (u8 *) ptk, ptk_len,
- wpa_key_mgmt_sha256(sm->key_mgmt));
- return 0;
+ return wpa_pmk_to_ptk(sm->pmk, sm->pmk_len, "Pairwise key expansion",
+ sm->own_addr, sm->bssid, sm->snonce,
+ key->key_nonce, ptk, sm->key_mgmt,
+ sm->pairwise_cipher);
}
static void wpa_supplicant_process_1_of_4(struct wpa_sm *sm,
const unsigned char *src_addr,
const struct wpa_eapol_key *key,
- u16 ver)
+ u16 ver, const u8 *key_data,
+ size_t key_data_len)
{
struct wpa_eapol_ie_parse ie;
struct wpa_ptk *ptk;
- u8 buf[8];
int res;
+ u8 *kde, *kde_buf = NULL;
+ size_t kde_len;
if (wpa_sm_get_network_ctx(sm) == NULL) {
- wpa_printf(MSG_WARNING, "WPA: No SSID info found (msg 1 of "
- "4).");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, "WPA: No SSID info "
+ "found (msg 1 of 4)");
return;
}
wpa_sm_set_state(sm, WPA_4WAY_HANDSHAKE);
- wpa_printf(MSG_DEBUG, "WPA: RX message 1 of 4-Way Handshake from "
- MACSTR " (ver=%d)", MAC2STR(src_addr), ver);
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: RX message 1 of 4-Way "
+ "Handshake from " MACSTR " (ver=%d)", MAC2STR(src_addr), ver);
os_memset(&ie, 0, sizeof(ie));
-#ifndef CONFIG_NO_WPA2
- if (sm->proto == WPA_PROTO_RSN) {
+ if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) {
/* RSN: msg 1/4 should contain PMKID for the selected PMK */
- const u8 *_buf = (const u8 *) (key + 1);
- size_t len = WPA_GET_BE16(key->key_data_length);
- wpa_hexdump(MSG_DEBUG, "RSN: msg 1/4 key data", _buf, len);
- wpa_supplicant_parse_ies(_buf, len, &ie);
+ wpa_hexdump(MSG_DEBUG, "RSN: msg 1/4 key data",
+ key_data, key_data_len);
+ if (wpa_supplicant_parse_ies(key_data, key_data_len, &ie) < 0)
+ goto failed;
if (ie.pmkid) {
wpa_hexdump(MSG_DEBUG, "RSN: PMKID from "
"Authenticator", ie.pmkid, PMKID_LEN);
}
}
-#endif /* CONFIG_NO_WPA2 */
res = wpa_supplicant_get_pmk(sm, src_addr, ie.pmkid);
if (res == -2) {
- wpa_printf(MSG_DEBUG, "RSN: Do not reply to msg 1/4 - "
- "requesting full EAP authentication");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "RSN: Do not reply to "
+ "msg 1/4 - requesting full EAP authentication");
return;
}
if (res)
goto failed;
if (sm->renew_snonce) {
- if (os_get_random(sm->snonce, WPA_NONCE_LEN)) {
+ if (random_get_bytes(sm->snonce, WPA_NONCE_LEN)) {
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
"WPA: Failed to get random data for SNonce");
goto failed;
* been verified when processing message 3/4. */
ptk = &sm->tptk;
wpa_derive_ptk(sm, src_addr, key, ptk);
- /* Supplicant: swap tx/rx Mic keys */
- os_memcpy(buf, ptk->u.auth.tx_mic_key, 8);
- os_memcpy(ptk->u.auth.tx_mic_key, ptk->u.auth.rx_mic_key, 8);
- os_memcpy(ptk->u.auth.rx_mic_key, buf, 8);
+ if (sm->pairwise_cipher == WPA_CIPHER_TKIP) {
+ u8 buf[8];
+ /* Supplicant: swap tx/rx Mic keys */
+ os_memcpy(buf, &ptk->tk[16], 8);
+ os_memcpy(&ptk->tk[16], &ptk->tk[24], 8);
+ os_memcpy(&ptk->tk[24], buf, 8);
+ os_memset(buf, 0, sizeof(buf));
+ }
sm->tptk_set = 1;
+ kde = sm->assoc_wpa_ie;
+ kde_len = sm->assoc_wpa_ie_len;
+
+#ifdef CONFIG_P2P
+ if (sm->p2p) {
+ kde_buf = os_malloc(kde_len + 2 + RSN_SELECTOR_LEN + 1);
+ if (kde_buf) {
+ u8 *pos;
+ wpa_printf(MSG_DEBUG, "P2P: Add IP Address Request KDE "
+ "into EAPOL-Key 2/4");
+ os_memcpy(kde_buf, kde, kde_len);
+ kde = kde_buf;
+ pos = kde + kde_len;
+ *pos++ = WLAN_EID_VENDOR_SPECIFIC;
+ *pos++ = RSN_SELECTOR_LEN + 1;
+ RSN_SELECTOR_PUT(pos, WFA_KEY_DATA_IP_ADDR_REQ);
+ pos += RSN_SELECTOR_LEN;
+ *pos++ = 0x01;
+ kde_len = pos - kde;
+ }
+ }
+#endif /* CONFIG_P2P */
+
if (wpa_supplicant_send_2_of_4(sm, sm->bssid, key, ver, sm->snonce,
- sm->assoc_wpa_ie, sm->assoc_wpa_ie_len,
- ptk))
+ kde, kde_len, ptk))
goto failed;
+ os_free(kde_buf);
os_memcpy(sm->anonce, key->key_nonce, WPA_NONCE_LEN);
return;
failed:
+ os_free(kde_buf);
wpa_sm_deauthenticate(sm, WLAN_REASON_UNSPECIFIED);
}
* Start preauthentication after a short wait to avoid a
* possible race condition between the data receive and key
* configuration after the 4-Way Handshake. This increases the
- * likelyhood of the first preauth EAPOL-Start frame getting to
+ * likelihood of the first preauth EAPOL-Start frame getting to
* the target AP.
*/
eloop_register_timeout(1, 0, wpa_sm_start_preauth, sm, NULL);
}
if (sm->cur_pmksa && sm->cur_pmksa->opportunistic) {
- wpa_printf(MSG_DEBUG, "RSN: Authenticator accepted "
- "opportunistic PMKSA entry - marking it valid");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: Authenticator accepted "
+ "opportunistic PMKSA entry - marking it valid");
sm->cur_pmksa->opportunistic = 0;
}
static void wpa_sm_rekey_ptk(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_sm *sm = eloop_ctx;
- wpa_printf(MSG_DEBUG, "WPA: Request PTK rekeying");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Request PTK rekeying");
wpa_sm_key_request(sm, 0, 1);
}
const u8 *key_rsc;
u8 null_rsc[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
- wpa_printf(MSG_DEBUG, "WPA: Installing PTK to the driver.");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: Installing PTK to the driver");
- switch (sm->pairwise_cipher) {
- case WPA_CIPHER_CCMP:
- alg = WPA_ALG_CCMP;
- keylen = 16;
- rsclen = 6;
- break;
- case WPA_CIPHER_TKIP:
- alg = WPA_ALG_TKIP;
- keylen = 32;
- rsclen = 6;
- break;
- case WPA_CIPHER_NONE:
- wpa_printf(MSG_DEBUG, "WPA: Pairwise Cipher Suite: "
- "NONE - do not use pairwise keys");
+ if (sm->pairwise_cipher == WPA_CIPHER_NONE) {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Pairwise Cipher "
+ "Suite: NONE - do not use pairwise keys");
return 0;
- default:
- wpa_printf(MSG_WARNING, "WPA: Unsupported pairwise cipher %d",
- sm->pairwise_cipher);
+ }
+
+ if (!wpa_cipher_valid_pairwise(sm->pairwise_cipher)) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Unsupported pairwise cipher %d",
+ sm->pairwise_cipher);
return -1;
}
- if (sm->proto == WPA_PROTO_RSN) {
+ alg = wpa_cipher_to_alg(sm->pairwise_cipher);
+ keylen = wpa_cipher_key_len(sm->pairwise_cipher);
+ rsclen = wpa_cipher_rsc_len(sm->pairwise_cipher);
+
+ if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) {
key_rsc = null_rsc;
} else {
key_rsc = key->key_rsc;
}
if (wpa_sm_set_key(sm, alg, sm->bssid, 0, 1, key_rsc, rsclen,
- (u8 *) sm->ptk.tk1, keylen) < 0) {
- wpa_printf(MSG_WARNING, "WPA: Failed to set PTK to the "
- "driver (alg=%d keylen=%d bssid=" MACSTR ")",
- alg, keylen, MAC2STR(sm->bssid));
+ sm->ptk.tk, keylen) < 0) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Failed to set PTK to the "
+ "driver (alg=%d keylen=%d bssid=" MACSTR ")",
+ alg, keylen, MAC2STR(sm->bssid));
return -1;
}
+ /* TK is not needed anymore in supplicant */
+ os_memset(sm->ptk.tk, 0, WPA_TK_MAX_LEN);
+
if (sm->wpa_ptk_rekey) {
eloop_cancel_timeout(wpa_sm_rekey_ptk, sm, NULL);
eloop_register_timeout(sm->wpa_ptk_rekey, 0, wpa_sm_rekey_ptk,
}
-static int wpa_supplicant_check_group_cipher(int group_cipher,
+static int wpa_supplicant_check_group_cipher(struct wpa_sm *sm,
+ int group_cipher,
int keylen, int maxkeylen,
int *key_rsc_len,
enum wpa_alg *alg)
{
- int ret = 0;
+ int klen;
- switch (group_cipher) {
- case WPA_CIPHER_CCMP:
- if (keylen != 16 || maxkeylen < 16) {
- ret = -1;
- break;
- }
- *key_rsc_len = 6;
- *alg = WPA_ALG_CCMP;
- break;
- case WPA_CIPHER_TKIP:
- if (keylen != 32 || maxkeylen < 32) {
- ret = -1;
- break;
- }
- *key_rsc_len = 6;
- *alg = WPA_ALG_TKIP;
- break;
- case WPA_CIPHER_WEP104:
- if (keylen != 13 || maxkeylen < 13) {
- ret = -1;
- break;
- }
- *key_rsc_len = 0;
- *alg = WPA_ALG_WEP;
- break;
- case WPA_CIPHER_WEP40:
- if (keylen != 5 || maxkeylen < 5) {
- ret = -1;
- break;
- }
- *key_rsc_len = 0;
- *alg = WPA_ALG_WEP;
- break;
- default:
- wpa_printf(MSG_WARNING, "WPA: Unsupported Group Cipher %d",
- group_cipher);
+ *alg = wpa_cipher_to_alg(group_cipher);
+ if (*alg == WPA_ALG_NONE) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Unsupported Group Cipher %d",
+ group_cipher);
return -1;
}
+ *key_rsc_len = wpa_cipher_rsc_len(group_cipher);
- if (ret < 0 ) {
- wpa_printf(MSG_WARNING, "WPA: Unsupported %s Group Cipher key "
- "length %d (%d).",
- wpa_cipher_txt(group_cipher), keylen, maxkeylen);
+ klen = wpa_cipher_key_len(group_cipher);
+ if (keylen != klen || maxkeylen < klen) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Unsupported %s Group Cipher key length %d (%d)",
+ wpa_cipher_txt(group_cipher), keylen, maxkeylen);
+ return -1;
}
-
- return ret;
+ return 0;
}
u8 gtk_buf[32];
wpa_hexdump_key(MSG_DEBUG, "WPA: Group Key", gd->gtk, gd->gtk_len);
- wpa_printf(MSG_DEBUG, "WPA: Installing GTK to the driver "
- "(keyidx=%d tx=%d len=%d).", gd->keyidx, gd->tx,
- gd->gtk_len);
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: Installing GTK to the driver (keyidx=%d tx=%d len=%d)",
+ gd->keyidx, gd->tx, gd->gtk_len);
wpa_hexdump(MSG_DEBUG, "WPA: RSC", key_rsc, gd->key_rsc_len);
if (sm->group_cipher == WPA_CIPHER_TKIP) {
/* Swap Tx/Rx keys for Michael MIC */
_gtk = gtk_buf;
}
if (sm->pairwise_cipher == WPA_CIPHER_NONE) {
- if (wpa_sm_set_key(sm, gd->alg,
- (u8 *) "\xff\xff\xff\xff\xff\xff",
+ if (wpa_sm_set_key(sm, gd->alg, NULL,
gd->keyidx, 1, key_rsc, gd->key_rsc_len,
_gtk, gd->gtk_len) < 0) {
- wpa_printf(MSG_WARNING, "WPA: Failed to set "
- "GTK to the driver (Group only).");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Failed to set GTK to the driver "
+ "(Group only)");
+ os_memset(gtk_buf, 0, sizeof(gtk_buf));
return -1;
}
- } else if (wpa_sm_set_key(sm, gd->alg,
- (u8 *) "\xff\xff\xff\xff\xff\xff",
+ } else if (wpa_sm_set_key(sm, gd->alg, broadcast_ether_addr,
gd->keyidx, gd->tx, key_rsc, gd->key_rsc_len,
_gtk, gd->gtk_len) < 0) {
- wpa_printf(MSG_WARNING, "WPA: Failed to set GTK to "
- "the driver (alg=%d keylen=%d keyidx=%d)",
- gd->alg, gd->gtk_len, gd->keyidx);
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Failed to set GTK to "
+ "the driver (alg=%d keylen=%d keyidx=%d)",
+ gd->alg, gd->gtk_len, gd->keyidx);
+ os_memset(gtk_buf, 0, sizeof(gtk_buf));
return -1;
}
+ os_memset(gtk_buf, 0, sizeof(gtk_buf));
return 0;
}
* doing Group Key only APs) and without this workaround, the
* data connection does not work because wpa_supplicant
* configured non-zero keyidx to be used for unicast. */
- wpa_printf(MSG_INFO, "WPA: Tx bit set for GTK, but pairwise "
- "keys are used - ignore Tx bit");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: Tx bit set for GTK, but pairwise "
+ "keys are used - ignore Tx bit");
return 0;
}
return tx;
const u8 *gtk, size_t gtk_len,
int key_info)
{
-#ifndef CONFIG_NO_WPA2
struct wpa_gtk_data gd;
/*
os_memcpy(gd.gtk, gtk, gtk_len);
gd.gtk_len = gtk_len;
- if (wpa_supplicant_check_group_cipher(sm->group_cipher,
- gtk_len, gtk_len,
- &gd.key_rsc_len, &gd.alg) ||
- wpa_supplicant_install_gtk(sm, &gd, key->key_rsc)) {
- wpa_printf(MSG_DEBUG, "RSN: Failed to install GTK");
+ if (sm->group_cipher != WPA_CIPHER_GTK_NOT_USED &&
+ (wpa_supplicant_check_group_cipher(sm, sm->group_cipher,
+ gtk_len, gtk_len,
+ &gd.key_rsc_len, &gd.alg) ||
+ wpa_supplicant_install_gtk(sm, &gd, key->key_rsc))) {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: Failed to install GTK");
+ os_memset(&gd, 0, sizeof(gd));
return -1;
}
+ os_memset(&gd, 0, sizeof(gd));
wpa_supplicant_key_neg_complete(sm, sm->bssid,
key_info & WPA_KEY_INFO_SECURE);
return 0;
-#else /* CONFIG_NO_WPA2 */
- return -1;
-#endif /* CONFIG_NO_WPA2 */
}
struct wpa_eapol_ie_parse *ie)
{
#ifdef CONFIG_IEEE80211W
- if (sm->mgmt_group_cipher != WPA_CIPHER_AES_128_CMAC)
+ if (!wpa_cipher_valid_mgmt_group(sm->mgmt_group_cipher))
return 0;
if (ie->igtk) {
+ size_t len;
const struct wpa_igtk_kde *igtk;
u16 keyidx;
- if (ie->igtk_len != sizeof(*igtk))
+ len = wpa_cipher_key_len(sm->mgmt_group_cipher);
+ if (ie->igtk_len != WPA_IGTK_KDE_PREFIX_LEN + len)
return -1;
igtk = (const struct wpa_igtk_kde *) ie->igtk;
keyidx = WPA_GET_LE16(igtk->keyid);
- wpa_printf(MSG_DEBUG, "WPA: IGTK keyid %d "
- "pn %02x%02x%02x%02x%02x%02x",
- keyidx, MAC2STR(igtk->pn));
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: IGTK keyid %d "
+ "pn %02x%02x%02x%02x%02x%02x",
+ keyidx, MAC2STR(igtk->pn));
wpa_hexdump_key(MSG_DEBUG, "WPA: IGTK",
- igtk->igtk, WPA_IGTK_LEN);
+ igtk->igtk, len);
if (keyidx > 4095) {
- wpa_printf(MSG_WARNING, "WPA: Invalid IGTK KeyID %d",
- keyidx);
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Invalid IGTK KeyID %d", keyidx);
return -1;
}
- if (wpa_sm_set_key(sm, WPA_ALG_IGTK,
- (u8 *) "\xff\xff\xff\xff\xff\xff",
+ if (wpa_sm_set_key(sm, wpa_cipher_to_alg(sm->mgmt_group_cipher),
+ broadcast_ether_addr,
keyidx, 0, igtk->pn, sizeof(igtk->pn),
- igtk->igtk, WPA_IGTK_LEN) < 0) {
- wpa_printf(MSG_WARNING, "WPA: Failed to configure IGTK"
- " to the driver");
+ igtk->igtk, len) < 0) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Failed to configure IGTK to the driver");
return -1;
}
}
}
if (wpa_ie) {
if (!sm->ap_wpa_ie) {
- wpa_printf(MSG_INFO, "WPA: No WPA IE in "
- "Beacon/ProbeResp");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: No WPA IE in Beacon/ProbeResp");
}
wpa_hexdump(MSG_INFO, "WPA: WPA IE in 3/4 msg",
wpa_ie, wpa_ie_len);
}
if (rsn_ie) {
if (!sm->ap_rsn_ie) {
- wpa_printf(MSG_INFO, "WPA: No RSN IE in "
- "Beacon/ProbeResp");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: No RSN IE in Beacon/ProbeResp");
}
wpa_hexdump(MSG_INFO, "WPA: RSN IE in 3/4 msg",
rsn_ie, rsn_ie_len);
}
- wpa_sm_disassociate(sm, WLAN_REASON_IE_IN_4WAY_DIFFERS);
+ wpa_sm_deauthenticate(sm, WLAN_REASON_IE_IN_4WAY_DIFFERS);
}
if (ie->mdie == NULL || ie->mdie_len < 2 + sizeof(*mdie) ||
os_memcmp(mdie->mobility_domain, sm->mobility_domain,
MOBILITY_DOMAIN_ID_LEN) != 0) {
- wpa_printf(MSG_DEBUG, "FT: MDIE in msg 3/4 did not "
- "match with the current mobility domain");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "FT: MDIE in msg 3/4 did "
+ "not match with the current mobility domain");
return -1;
}
if (assoc_resp_mdie &&
(assoc_resp_mdie[1] != ie->mdie[1] ||
os_memcmp(assoc_resp_mdie, ie->mdie, 2 + ie->mdie[1]) != 0)) {
- wpa_printf(MSG_DEBUG, "FT: MDIE mismatch");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "FT: MDIE mismatch");
wpa_hexdump(MSG_DEBUG, "FT: MDIE in EAPOL-Key msg 3/4",
ie->mdie, 2 + ie->mdie[1]);
wpa_hexdump(MSG_DEBUG, "FT: MDIE in (Re)Association Response",
const u8 *assoc_resp_ftie)
{
if (ie->ftie == NULL) {
- wpa_printf(MSG_DEBUG, "FT: No FTIE in EAPOL-Key msg 3/4");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "FT: No FTIE in EAPOL-Key msg 3/4");
return -1;
}
if (assoc_resp_ftie[1] != ie->ftie[1] ||
os_memcmp(assoc_resp_ftie, ie->ftie, 2 + ie->ftie[1]) != 0) {
- wpa_printf(MSG_DEBUG, "FT: FTIE mismatch");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "FT: FTIE mismatch");
wpa_hexdump(MSG_DEBUG, "FT: FTIE in EAPOL-Key msg 3/4",
ie->ftie, 2 + ie->ftie[1]);
wpa_hexdump(MSG_DEBUG, "FT: FTIE in (Re)Association Response",
*/
if (wpa_parse_wpa_ie_rsn(ie->rsn_ie, ie->rsn_ie_len, &rsn) < 0 ||
rsn.num_pmkid != 1 || rsn.pmkid == NULL) {
- wpa_printf(MSG_DEBUG, "FT: No PMKR1Name in "
- "FT 4-way handshake message 3/4");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "FT: No PMKR1Name in "
+ "FT 4-way handshake message 3/4");
return -1;
}
- if (os_memcmp(rsn.pmkid, sm->pmk_r1_name, WPA_PMK_NAME_LEN) != 0) {
- wpa_printf(MSG_DEBUG, "FT: PMKR1Name mismatch in "
- "FT 4-way handshake message 3/4");
+ if (os_memcmp_const(rsn.pmkid, sm->pmk_r1_name, WPA_PMK_NAME_LEN) != 0)
+ {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "FT: PMKR1Name mismatch in "
+ "FT 4-way handshake message 3/4");
wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name from Authenticator",
rsn.pmkid, WPA_PMK_NAME_LEN);
wpa_hexdump(MSG_DEBUG, "FT: Derived PMKR1Name",
struct wpa_eapol_ie_parse *ie)
{
if (sm->ap_wpa_ie == NULL && sm->ap_rsn_ie == NULL) {
- wpa_printf(MSG_DEBUG, "WPA: No WPA/RSN IE for this AP known. "
- "Trying to get from scan results");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: No WPA/RSN IE for this AP known. "
+ "Trying to get from scan results");
if (wpa_sm_get_beacon_ie(sm) < 0) {
- wpa_printf(MSG_WARNING, "WPA: Could not find AP from "
- "the scan results");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Could not find AP from "
+ "the scan results");
} else {
- wpa_printf(MSG_DEBUG, "WPA: Found the current AP from "
- "updated scan results");
+ wpa_msg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: Found the current AP from "
+ "updated scan results");
}
}
* @key: Pointer to the EAPOL-Key frame header
* @ver: Version bits from EAPOL-Key Key Info
* @key_info: Key Info
- * @kde: KDEs to include the EAPOL-Key frame
- * @kde_len: Length of KDEs
* @ptk: PTK to use for keyed hash and encryption
* Returns: 0 on success, -1 on failure
*/
int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst,
const struct wpa_eapol_key *key,
u16 ver, u16 key_info,
- const u8 *kde, size_t kde_len,
struct wpa_ptk *ptk)
{
- size_t rlen;
+ size_t mic_len, hdrlen, rlen;
struct wpa_eapol_key *reply;
- u8 *rbuf;
-
- if (kde)
- wpa_hexdump(MSG_DEBUG, "WPA: KDE for msg 4/4", kde, kde_len);
+ struct wpa_eapol_key_192 *reply192;
+ u8 *rbuf, *key_mic;
+ mic_len = wpa_mic_len(sm->key_mgmt);
+ hdrlen = mic_len == 24 ? sizeof(*reply192) : sizeof(*reply);
rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY, NULL,
- sizeof(*reply) + kde_len,
- &rlen, (void *) &reply);
+ hdrlen, &rlen, (void *) &reply);
if (rbuf == NULL)
return -1;
+ reply192 = (struct wpa_eapol_key_192 *) reply;
- reply->type = sm->proto == WPA_PROTO_RSN ?
+ reply->type = (sm->proto == WPA_PROTO_RSN ||
+ sm->proto == WPA_PROTO_OSEN) ?
EAPOL_KEY_TYPE_RSN : EAPOL_KEY_TYPE_WPA;
key_info &= WPA_KEY_INFO_SECURE;
key_info |= ver | WPA_KEY_INFO_KEY_TYPE | WPA_KEY_INFO_MIC;
WPA_PUT_BE16(reply->key_info, key_info);
- if (sm->proto == WPA_PROTO_RSN)
+ if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN)
WPA_PUT_BE16(reply->key_length, 0);
else
os_memcpy(reply->key_length, key->key_length, 2);
os_memcpy(reply->replay_counter, key->replay_counter,
WPA_REPLAY_COUNTER_LEN);
- WPA_PUT_BE16(reply->key_data_length, kde_len);
- if (kde)
- os_memcpy(reply + 1, kde, kde_len);
+ key_mic = reply192->key_mic; /* same offset for reply and reply192 */
+ if (mic_len == 24)
+ WPA_PUT_BE16(reply192->key_data_length, 0);
+ else
+ WPA_PUT_BE16(reply->key_data_length, 0);
- wpa_printf(MSG_DEBUG, "WPA: Sending EAPOL-Key 4/4");
- wpa_eapol_key_send(sm, ptk->kck, ver, dst, ETH_P_EAPOL,
- rbuf, rlen, reply->key_mic);
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Sending EAPOL-Key 4/4");
+ wpa_eapol_key_send(sm, ptk->kck, ptk->kck_len, ver, dst, ETH_P_EAPOL,
+ rbuf, rlen, key_mic);
return 0;
}
static void wpa_supplicant_process_3_of_4(struct wpa_sm *sm,
const struct wpa_eapol_key *key,
- u16 ver)
+ u16 ver, const u8 *key_data,
+ size_t key_data_len)
{
- u16 key_info, keylen, len;
- const u8 *pos;
+ u16 key_info, keylen;
struct wpa_eapol_ie_parse ie;
wpa_sm_set_state(sm, WPA_4WAY_HANDSHAKE);
- wpa_printf(MSG_DEBUG, "WPA: RX message 3 of 4-Way Handshake from "
- MACSTR " (ver=%d)", MAC2STR(sm->bssid), ver);
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: RX message 3 of 4-Way "
+ "Handshake from " MACSTR " (ver=%d)", MAC2STR(sm->bssid), ver);
key_info = WPA_GET_BE16(key->key_info);
- pos = (const u8 *) (key + 1);
- len = WPA_GET_BE16(key->key_data_length);
- wpa_hexdump(MSG_DEBUG, "WPA: IE KeyData", pos, len);
- wpa_supplicant_parse_ies(pos, len, &ie);
+ wpa_hexdump(MSG_DEBUG, "WPA: IE KeyData", key_data, key_data_len);
+ if (wpa_supplicant_parse_ies(key_data, key_data_len, &ie) < 0)
+ goto failed;
if (ie.gtk && !(key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) {
- wpa_printf(MSG_WARNING, "WPA: GTK IE in unencrypted key data");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: GTK IE in unencrypted key data");
goto failed;
}
#ifdef CONFIG_IEEE80211W
if (ie.igtk && !(key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) {
- wpa_printf(MSG_WARNING, "WPA: IGTK KDE in unencrypted key "
- "data");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: IGTK KDE in unencrypted key data");
goto failed;
}
- if (ie.igtk && ie.igtk_len != sizeof(struct wpa_igtk_kde)) {
- wpa_printf(MSG_WARNING, "WPA: Invalid IGTK KDE length %lu",
- (unsigned long) ie.igtk_len);
+ if (ie.igtk &&
+ wpa_cipher_valid_mgmt_group(sm->mgmt_group_cipher) &&
+ ie.igtk_len != WPA_IGTK_KDE_PREFIX_LEN +
+ (unsigned int) wpa_cipher_key_len(sm->mgmt_group_cipher)) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Invalid IGTK KDE length %lu",
+ (unsigned long) ie.igtk_len);
goto failed;
}
#endif /* CONFIG_IEEE80211W */
goto failed;
if (os_memcmp(sm->anonce, key->key_nonce, WPA_NONCE_LEN) != 0) {
- wpa_printf(MSG_WARNING, "WPA: ANonce from message 1 of 4-Way "
- "Handshake differs from 3 of 4-Way Handshake - drop"
- " packet (src=" MACSTR ")", MAC2STR(sm->bssid));
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: ANonce from message 1 of 4-Way Handshake "
+ "differs from 3 of 4-Way Handshake - drop packet (src="
+ MACSTR ")", MAC2STR(sm->bssid));
goto failed;
}
keylen = WPA_GET_BE16(key->key_length);
- switch (sm->pairwise_cipher) {
- case WPA_CIPHER_CCMP:
- if (keylen != 16) {
- wpa_printf(MSG_WARNING, "WPA: Invalid CCMP key length "
- "%d (src=" MACSTR ")",
- keylen, MAC2STR(sm->bssid));
- goto failed;
- }
- break;
- case WPA_CIPHER_TKIP:
- if (keylen != 32) {
- wpa_printf(MSG_WARNING, "WPA: Invalid TKIP key length "
- "%d (src=" MACSTR ")",
- keylen, MAC2STR(sm->bssid));
- goto failed;
- }
- break;
+ if (keylen != wpa_cipher_key_len(sm->pairwise_cipher)) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Invalid %s key length %d (src=" MACSTR
+ ")", wpa_cipher_txt(sm->pairwise_cipher), keylen,
+ MAC2STR(sm->bssid));
+ goto failed;
}
+#ifdef CONFIG_P2P
+ if (ie.ip_addr_alloc) {
+ os_memcpy(sm->p2p_ip_addr, ie.ip_addr_alloc, 3 * 4);
+ wpa_hexdump(MSG_DEBUG, "P2P: IP address info",
+ sm->p2p_ip_addr, sizeof(sm->p2p_ip_addr));
+ }
+#endif /* CONFIG_P2P */
+
if (wpa_supplicant_send_4_of_4(sm, sm->bssid, key, ver, key_info,
- NULL, 0, &sm->ptk)) {
+ &sm->ptk)) {
goto failed;
}
}
wpa_sm_set_state(sm, WPA_GROUP_HANDSHAKE);
- if (ie.gtk &&
+ if (sm->group_cipher == WPA_CIPHER_GTK_NOT_USED) {
+ wpa_supplicant_key_neg_complete(sm, sm->bssid,
+ key_info & WPA_KEY_INFO_SECURE);
+ } else if (ie.gtk &&
wpa_supplicant_pairwise_gtk(sm, key,
ie.gtk, ie.gtk_len, key_info) < 0) {
- wpa_printf(MSG_INFO, "RSN: Failed to configure GTK");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "RSN: Failed to configure GTK");
goto failed;
}
if (ieee80211w_set_keys(sm, &ie) < 0) {
- wpa_printf(MSG_INFO, "RSN: Failed to configure IGTK");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "RSN: Failed to configure IGTK");
goto failed;
}
+ if (ie.gtk)
+ wpa_sm_set_rekey_offload(sm);
+
+ if (sm->proto == WPA_PROTO_RSN && wpa_key_mgmt_suite_b(sm->key_mgmt)) {
+ struct rsn_pmksa_cache_entry *sa;
+
+ sa = pmksa_cache_add(sm->pmksa, sm->pmk, sm->pmk_len,
+ sm->ptk.kck, sm->ptk.kck_len,
+ sm->bssid, sm->own_addr,
+ sm->network_ctx, sm->key_mgmt);
+ if (!sm->cur_pmksa)
+ sm->cur_pmksa = sa;
+ }
+
+ sm->msg_3_of_4_ok = 1;
return;
failed:
struct wpa_eapol_ie_parse ie;
wpa_hexdump(MSG_DEBUG, "RSN: msg 1/2 key data", keydata, keydatalen);
- wpa_supplicant_parse_ies(keydata, keydatalen, &ie);
+ if (wpa_supplicant_parse_ies(keydata, keydatalen, &ie) < 0)
+ return -1;
if (ie.gtk && !(key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) {
- wpa_printf(MSG_WARNING, "WPA: GTK IE in unencrypted key data");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: GTK IE in unencrypted key data");
return -1;
}
if (ie.gtk == NULL) {
- wpa_printf(MSG_INFO, "WPA: No GTK IE in Group Key msg 1/2");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: No GTK IE in Group Key msg 1/2");
return -1;
}
maxkeylen = gd->gtk_len = ie.gtk_len - 2;
- if (wpa_supplicant_check_group_cipher(sm->group_cipher,
+ if (wpa_supplicant_check_group_cipher(sm, sm->group_cipher,
gd->gtk_len, maxkeylen,
&gd->key_rsc_len, &gd->alg))
return -1;
- wpa_hexdump(MSG_DEBUG, "RSN: received GTK in group key handshake",
- ie.gtk, ie.gtk_len);
+ wpa_hexdump_key(MSG_DEBUG, "RSN: received GTK in group key handshake",
+ ie.gtk, ie.gtk_len);
gd->keyidx = ie.gtk[0] & 0x3;
gd->tx = wpa_supplicant_gtk_tx_bit_workaround(sm,
!!(ie.gtk[0] & BIT(2)));
if (ie.gtk_len - 2 > sizeof(gd->gtk)) {
- wpa_printf(MSG_INFO, "RSN: Too long GTK in GTK IE "
- "(len=%lu)", (unsigned long) ie.gtk_len - 2);
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "RSN: Too long GTK in GTK IE (len=%lu)",
+ (unsigned long) ie.gtk_len - 2);
return -1;
}
os_memcpy(gd->gtk, ie.gtk + 2, ie.gtk_len - 2);
if (ieee80211w_set_keys(sm, &ie) < 0)
- wpa_printf(MSG_INFO, "RSN: Failed to configure IGTK");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "RSN: Failed to configure IGTK");
return 0;
}
static int wpa_supplicant_process_1_of_2_wpa(struct wpa_sm *sm,
const struct wpa_eapol_key *key,
- size_t keydatalen, int key_info,
- size_t extra_len, u16 ver,
- struct wpa_gtk_data *gd)
+ const u8 *key_data,
+ size_t key_data_len, u16 key_info,
+ u16 ver, struct wpa_gtk_data *gd)
{
size_t maxkeylen;
- u8 ek[32];
-
- gd->gtk_len = WPA_GET_BE16(key->key_length);
- maxkeylen = keydatalen;
- if (keydatalen > extra_len) {
- wpa_printf(MSG_INFO, "WPA: Truncated EAPOL-Key packet:"
- " key_data_length=%lu > extra_len=%lu",
- (unsigned long) keydatalen,
- (unsigned long) extra_len);
- return -1;
- }
+ u16 gtk_len;
+
+ gtk_len = WPA_GET_BE16(key->key_length);
+ maxkeylen = key_data_len;
if (ver == WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) {
if (maxkeylen < 8) {
- wpa_printf(MSG_INFO, "WPA: Too short maxkeylen (%lu)",
- (unsigned long) maxkeylen);
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: Too short maxkeylen (%lu)",
+ (unsigned long) maxkeylen);
return -1;
}
maxkeylen -= 8;
}
- if (wpa_supplicant_check_group_cipher(sm->group_cipher,
- gd->gtk_len, maxkeylen,
+ if (gtk_len > maxkeylen ||
+ wpa_supplicant_check_group_cipher(sm, sm->group_cipher,
+ gtk_len, maxkeylen,
&gd->key_rsc_len, &gd->alg))
return -1;
+ gd->gtk_len = gtk_len;
gd->keyidx = (key_info & WPA_KEY_INFO_KEY_INDEX_MASK) >>
WPA_KEY_INFO_KEY_INDEX_SHIFT;
- if (ver == WPA_KEY_INFO_TYPE_HMAC_MD5_RC4) {
- os_memcpy(ek, key->key_iv, 16);
- os_memcpy(ek + 16, sm->ptk.kek, 16);
- if (keydatalen > sizeof(gd->gtk)) {
- wpa_printf(MSG_WARNING, "WPA: RC4 key data "
- "too long (%lu)",
- (unsigned long) keydatalen);
+ if (ver == WPA_KEY_INFO_TYPE_HMAC_MD5_RC4 && sm->ptk.kek_len == 16) {
+#ifdef CONFIG_NO_RC4
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: RC4 not supported in the build");
+ return -1;
+#else /* CONFIG_NO_RC4 */
+ u8 ek[32];
+ if (key_data_len > sizeof(gd->gtk)) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: RC4 key data too long (%lu)",
+ (unsigned long) key_data_len);
return -1;
}
- os_memcpy(gd->gtk, key + 1, keydatalen);
- if (rc4_skip(ek, 32, 256, gd->gtk, keydatalen)) {
- wpa_printf(MSG_ERROR, "WPA: RC4 failed");
+ os_memcpy(ek, key->key_iv, 16);
+ os_memcpy(ek + 16, sm->ptk.kek, sm->ptk.kek_len);
+ os_memcpy(gd->gtk, key_data, key_data_len);
+ if (rc4_skip(ek, 32, 256, gd->gtk, key_data_len)) {
+ os_memset(ek, 0, sizeof(ek));
+ wpa_msg(sm->ctx->msg_ctx, MSG_ERROR,
+ "WPA: RC4 failed");
return -1;
}
+ os_memset(ek, 0, sizeof(ek));
+#endif /* CONFIG_NO_RC4 */
} else if (ver == WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) {
- if (keydatalen % 8) {
- wpa_printf(MSG_WARNING, "WPA: Unsupported AES-WRAP "
- "len %lu", (unsigned long) keydatalen);
+ if (maxkeylen % 8) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Unsupported AES-WRAP len %lu",
+ (unsigned long) maxkeylen);
return -1;
}
if (maxkeylen > sizeof(gd->gtk)) {
- wpa_printf(MSG_WARNING, "WPA: AES-WRAP key data "
- "too long (keydatalen=%lu maxkeylen=%lu)",
- (unsigned long) keydatalen,
- (unsigned long) maxkeylen);
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: AES-WRAP key data "
+ "too long (keydatalen=%lu maxkeylen=%lu)",
+ (unsigned long) key_data_len,
+ (unsigned long) maxkeylen);
return -1;
}
- if (aes_unwrap(sm->ptk.kek, maxkeylen / 8,
- (const u8 *) (key + 1), gd->gtk)) {
- wpa_printf(MSG_WARNING, "WPA: AES unwrap "
- "failed - could not decrypt GTK");
+ if (aes_unwrap(sm->ptk.kek, sm->ptk.kek_len, maxkeylen / 8,
+ key_data, gd->gtk)) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: AES unwrap failed - could not decrypt "
+ "GTK");
return -1;
}
} else {
- wpa_printf(MSG_WARNING, "WPA: Unsupported key_info type %d",
- ver);
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Unsupported key_info type %d", ver);
return -1;
}
gd->tx = wpa_supplicant_gtk_tx_bit_workaround(
const struct wpa_eapol_key *key,
int ver, u16 key_info)
{
- size_t rlen;
+ size_t mic_len, hdrlen, rlen;
struct wpa_eapol_key *reply;
- u8 *rbuf;
+ struct wpa_eapol_key_192 *reply192;
+ u8 *rbuf, *key_mic;
+ mic_len = wpa_mic_len(sm->key_mgmt);
+ hdrlen = mic_len == 24 ? sizeof(*reply192) : sizeof(*reply);
rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY, NULL,
- sizeof(*reply), &rlen, (void *) &reply);
+ hdrlen, &rlen, (void *) &reply);
if (rbuf == NULL)
return -1;
+ reply192 = (struct wpa_eapol_key_192 *) reply;
- reply->type = sm->proto == WPA_PROTO_RSN ?
+ reply->type = (sm->proto == WPA_PROTO_RSN ||
+ sm->proto == WPA_PROTO_OSEN) ?
EAPOL_KEY_TYPE_RSN : EAPOL_KEY_TYPE_WPA;
key_info &= WPA_KEY_INFO_KEY_INDEX_MASK;
key_info |= ver | WPA_KEY_INFO_MIC | WPA_KEY_INFO_SECURE;
WPA_PUT_BE16(reply->key_info, key_info);
- if (sm->proto == WPA_PROTO_RSN)
+ if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN)
WPA_PUT_BE16(reply->key_length, 0);
else
os_memcpy(reply->key_length, key->key_length, 2);
os_memcpy(reply->replay_counter, key->replay_counter,
WPA_REPLAY_COUNTER_LEN);
- WPA_PUT_BE16(reply->key_data_length, 0);
+ key_mic = reply192->key_mic; /* same offset for reply and reply192 */
+ if (mic_len == 24)
+ WPA_PUT_BE16(reply192->key_data_length, 0);
+ else
+ WPA_PUT_BE16(reply->key_data_length, 0);
- wpa_printf(MSG_DEBUG, "WPA: Sending EAPOL-Key 2/2");
- wpa_eapol_key_send(sm, sm->ptk.kck, ver, sm->bssid, ETH_P_EAPOL,
- rbuf, rlen, reply->key_mic);
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Sending EAPOL-Key 2/2");
+ wpa_eapol_key_send(sm, sm->ptk.kck, sm->ptk.kck_len, ver, sm->bssid,
+ ETH_P_EAPOL, rbuf, rlen, key_mic);
return 0;
}
static void wpa_supplicant_process_1_of_2(struct wpa_sm *sm,
const unsigned char *src_addr,
const struct wpa_eapol_key *key,
- int extra_len, u16 ver)
+ const u8 *key_data,
+ size_t key_data_len, u16 ver)
{
- u16 key_info, keydatalen;
+ u16 key_info;
int rekey, ret;
struct wpa_gtk_data gd;
+ if (!sm->msg_3_of_4_ok) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: Group Key Handshake started prior to completion of 4-way handshake");
+ goto failed;
+ }
+
os_memset(&gd, 0, sizeof(gd));
rekey = wpa_sm_get_state(sm) == WPA_COMPLETED;
- wpa_printf(MSG_DEBUG, "WPA: RX message 1 of Group Key Handshake from "
- MACSTR " (ver=%d)", MAC2STR(src_addr), ver);
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: RX message 1 of Group Key "
+ "Handshake from " MACSTR " (ver=%d)", MAC2STR(src_addr), ver);
key_info = WPA_GET_BE16(key->key_info);
- keydatalen = WPA_GET_BE16(key->key_data_length);
- if (sm->proto == WPA_PROTO_RSN) {
- ret = wpa_supplicant_process_1_of_2_rsn(sm,
- (const u8 *) (key + 1),
- keydatalen, key_info,
+ if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) {
+ ret = wpa_supplicant_process_1_of_2_rsn(sm, key_data,
+ key_data_len, key_info,
&gd);
} else {
- ret = wpa_supplicant_process_1_of_2_wpa(sm, key, keydatalen,
- key_info, extra_len,
- ver, &gd);
+ ret = wpa_supplicant_process_1_of_2_wpa(sm, key, key_data,
+ key_data_len,
+ key_info, ver, &gd);
}
wpa_sm_set_state(sm, WPA_GROUP_HANDSHAKE);
if (wpa_supplicant_install_gtk(sm, &gd, key->key_rsc) ||
wpa_supplicant_send_2_of_2(sm, key, ver, key_info))
goto failed;
+ os_memset(&gd, 0, sizeof(gd));
if (rekey) {
wpa_msg(sm->ctx->msg_ctx, MSG_INFO, "WPA: Group rekeying "
key_info &
WPA_KEY_INFO_SECURE);
}
+
+ wpa_sm_set_rekey_offload(sm);
+
return;
failed:
+ os_memset(&gd, 0, sizeof(gd));
wpa_sm_deauthenticate(sm, WLAN_REASON_UNSPECIFIED);
}
static int wpa_supplicant_verify_eapol_key_mic(struct wpa_sm *sm,
- struct wpa_eapol_key *key,
+ struct wpa_eapol_key_192 *key,
u16 ver,
const u8 *buf, size_t len)
{
- u8 mic[16];
+ u8 mic[WPA_EAPOL_KEY_MIC_MAX_LEN];
int ok = 0;
+ size_t mic_len = wpa_mic_len(sm->key_mgmt);
- os_memcpy(mic, key->key_mic, 16);
+ os_memcpy(mic, key->key_mic, mic_len);
if (sm->tptk_set) {
- os_memset(key->key_mic, 0, 16);
- wpa_eapol_key_mic(sm->tptk.kck, ver, buf, len,
- key->key_mic);
- if (os_memcmp(mic, key->key_mic, 16) != 0) {
- wpa_printf(MSG_WARNING, "WPA: Invalid EAPOL-Key MIC "
- "when using TPTK - ignoring TPTK");
+ os_memset(key->key_mic, 0, mic_len);
+ wpa_eapol_key_mic(sm->tptk.kck, sm->tptk.kck_len, sm->key_mgmt,
+ ver, buf, len, key->key_mic);
+ if (os_memcmp_const(mic, key->key_mic, mic_len) != 0) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Invalid EAPOL-Key MIC "
+ "when using TPTK - ignoring TPTK");
} else {
ok = 1;
sm->tptk_set = 0;
sm->ptk_set = 1;
os_memcpy(&sm->ptk, &sm->tptk, sizeof(sm->ptk));
+ os_memset(&sm->tptk, 0, sizeof(sm->tptk));
}
}
if (!ok && sm->ptk_set) {
- os_memset(key->key_mic, 0, 16);
- wpa_eapol_key_mic(sm->ptk.kck, ver, buf, len,
- key->key_mic);
- if (os_memcmp(mic, key->key_mic, 16) != 0) {
- wpa_printf(MSG_WARNING, "WPA: Invalid EAPOL-Key MIC "
- "- dropping packet");
+ os_memset(key->key_mic, 0, mic_len);
+ wpa_eapol_key_mic(sm->ptk.kck, sm->ptk.kck_len, sm->key_mgmt,
+ ver, buf, len, key->key_mic);
+ if (os_memcmp_const(mic, key->key_mic, mic_len) != 0) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Invalid EAPOL-Key MIC - "
+ "dropping packet");
return -1;
}
ok = 1;
}
if (!ok) {
- wpa_printf(MSG_WARNING, "WPA: Could not verify EAPOL-Key MIC "
- "- dropping packet");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Could not verify EAPOL-Key MIC - "
+ "dropping packet");
return -1;
}
/* Decrypt RSN EAPOL-Key key data (RC4 or AES-WRAP) */
static int wpa_supplicant_decrypt_key_data(struct wpa_sm *sm,
- struct wpa_eapol_key *key, u16 ver)
+ struct wpa_eapol_key *key, u16 ver,
+ u8 *key_data, size_t *key_data_len)
{
- u16 keydatalen = WPA_GET_BE16(key->key_data_length);
-
wpa_hexdump(MSG_DEBUG, "RSN: encrypted key data",
- (u8 *) (key + 1), keydatalen);
+ key_data, *key_data_len);
if (!sm->ptk_set) {
- wpa_printf(MSG_WARNING, "WPA: PTK not available, "
- "cannot decrypt EAPOL-Key key data.");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: PTK not available, cannot decrypt EAPOL-Key Key "
+ "Data");
return -1;
}
/* Decrypt key data here so that this operation does not need
* to be implemented separately for each message type. */
- if (ver == WPA_KEY_INFO_TYPE_HMAC_MD5_RC4) {
+ if (ver == WPA_KEY_INFO_TYPE_HMAC_MD5_RC4 && sm->ptk.kek_len == 16) {
+#ifdef CONFIG_NO_RC4
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: RC4 not supported in the build");
+ return -1;
+#else /* CONFIG_NO_RC4 */
u8 ek[32];
os_memcpy(ek, key->key_iv, 16);
- os_memcpy(ek + 16, sm->ptk.kek, 16);
- if (rc4_skip(ek, 32, 256, (u8 *) (key + 1), keydatalen)) {
- wpa_printf(MSG_ERROR, "WPA: RC4 failed");
+ os_memcpy(ek + 16, sm->ptk.kek, sm->ptk.kek_len);
+ if (rc4_skip(ek, 32, 256, key_data, *key_data_len)) {
+ os_memset(ek, 0, sizeof(ek));
+ wpa_msg(sm->ctx->msg_ctx, MSG_ERROR,
+ "WPA: RC4 failed");
return -1;
}
+ os_memset(ek, 0, sizeof(ek));
+#endif /* CONFIG_NO_RC4 */
} else if (ver == WPA_KEY_INFO_TYPE_HMAC_SHA1_AES ||
- ver == WPA_KEY_INFO_TYPE_AES_128_CMAC) {
+ ver == WPA_KEY_INFO_TYPE_AES_128_CMAC ||
+ sm->key_mgmt == WPA_KEY_MGMT_OSEN ||
+ wpa_key_mgmt_suite_b(sm->key_mgmt)) {
u8 *buf;
- if (keydatalen % 8) {
- wpa_printf(MSG_WARNING, "WPA: Unsupported "
- "AES-WRAP len %d", keydatalen);
+ if (*key_data_len < 8 || *key_data_len % 8) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Unsupported AES-WRAP len %u",
+ (unsigned int) *key_data_len);
return -1;
}
- keydatalen -= 8; /* AES-WRAP adds 8 bytes */
- buf = os_malloc(keydatalen);
+ *key_data_len -= 8; /* AES-WRAP adds 8 bytes */
+ buf = os_malloc(*key_data_len);
if (buf == NULL) {
- wpa_printf(MSG_WARNING, "WPA: No memory for "
- "AES-UNWRAP buffer");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: No memory for AES-UNWRAP buffer");
return -1;
}
- if (aes_unwrap(sm->ptk.kek, keydatalen / 8,
- (u8 *) (key + 1), buf)) {
+ if (aes_unwrap(sm->ptk.kek, sm->ptk.kek_len, *key_data_len / 8,
+ key_data, buf)) {
os_free(buf);
- wpa_printf(MSG_WARNING, "WPA: AES unwrap failed - "
- "could not decrypt EAPOL-Key key data");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: AES unwrap failed - "
+ "could not decrypt EAPOL-Key key data");
return -1;
}
- os_memcpy(key + 1, buf, keydatalen);
+ os_memcpy(key_data, buf, *key_data_len);
os_free(buf);
- WPA_PUT_BE16(key->key_data_length, keydatalen);
+ WPA_PUT_BE16(key->key_data_length, *key_data_len);
} else {
- wpa_printf(MSG_WARNING, "WPA: Unsupported key_info type %d",
- ver);
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Unsupported key_info type %d", ver);
return -1;
}
wpa_hexdump_key(MSG_DEBUG, "WPA: decrypted EAPOL-Key key data",
- (u8 *) (key + 1), keydatalen);
+ key_data, *key_data_len);
return 0;
}
void wpa_sm_aborted_cached(struct wpa_sm *sm)
{
if (sm && sm->cur_pmksa) {
- wpa_printf(MSG_DEBUG, "RSN: Cancelling PMKSA caching attempt");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: Cancelling PMKSA caching attempt");
sm->cur_pmksa = NULL;
}
}
-static void wpa_eapol_key_dump(const struct wpa_eapol_key *key)
+static void wpa_eapol_key_dump(struct wpa_sm *sm,
+ const struct wpa_eapol_key *key,
+ unsigned int key_data_len,
+ const u8 *mic, unsigned int mic_len)
{
#ifndef CONFIG_NO_STDOUT_DEBUG
u16 key_info = WPA_GET_BE16(key->key_info);
- wpa_printf(MSG_DEBUG, " EAPOL-Key type=%d", key->type);
- wpa_printf(MSG_DEBUG, " key_info 0x%x (ver=%d keyidx=%d rsvd=%d %s"
- "%s%s%s%s%s%s%s)",
- key_info, key_info & WPA_KEY_INFO_TYPE_MASK,
- (key_info & WPA_KEY_INFO_KEY_INDEX_MASK) >>
- WPA_KEY_INFO_KEY_INDEX_SHIFT,
- (key_info & (BIT(13) | BIT(14) | BIT(15))) >> 13,
- key_info & WPA_KEY_INFO_KEY_TYPE ? "Pairwise" : "Group",
- key_info & WPA_KEY_INFO_INSTALL ? " Install" : "",
- key_info & WPA_KEY_INFO_ACK ? " Ack" : "",
- key_info & WPA_KEY_INFO_MIC ? " MIC" : "",
- key_info & WPA_KEY_INFO_SECURE ? " Secure" : "",
- key_info & WPA_KEY_INFO_ERROR ? " Error" : "",
- key_info & WPA_KEY_INFO_REQUEST ? " Request" : "",
- key_info & WPA_KEY_INFO_ENCR_KEY_DATA ? " Encr" : "");
- wpa_printf(MSG_DEBUG, " key_length=%u key_data_length=%u",
- WPA_GET_BE16(key->key_length),
- WPA_GET_BE16(key->key_data_length));
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, " EAPOL-Key type=%d", key->type);
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ " key_info 0x%x (ver=%d keyidx=%d rsvd=%d %s%s%s%s%s%s%s%s)",
+ key_info, key_info & WPA_KEY_INFO_TYPE_MASK,
+ (key_info & WPA_KEY_INFO_KEY_INDEX_MASK) >>
+ WPA_KEY_INFO_KEY_INDEX_SHIFT,
+ (key_info & (BIT(13) | BIT(14) | BIT(15))) >> 13,
+ key_info & WPA_KEY_INFO_KEY_TYPE ? "Pairwise" : "Group",
+ key_info & WPA_KEY_INFO_INSTALL ? " Install" : "",
+ key_info & WPA_KEY_INFO_ACK ? " Ack" : "",
+ key_info & WPA_KEY_INFO_MIC ? " MIC" : "",
+ key_info & WPA_KEY_INFO_SECURE ? " Secure" : "",
+ key_info & WPA_KEY_INFO_ERROR ? " Error" : "",
+ key_info & WPA_KEY_INFO_REQUEST ? " Request" : "",
+ key_info & WPA_KEY_INFO_ENCR_KEY_DATA ? " Encr" : "");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ " key_length=%u key_data_length=%u",
+ WPA_GET_BE16(key->key_length), key_data_len);
wpa_hexdump(MSG_DEBUG, " replay_counter",
key->replay_counter, WPA_REPLAY_COUNTER_LEN);
wpa_hexdump(MSG_DEBUG, " key_nonce", key->key_nonce, WPA_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, " key_iv", key->key_iv, 16);
wpa_hexdump(MSG_DEBUG, " key_rsc", key->key_rsc, 8);
wpa_hexdump(MSG_DEBUG, " key_id (reserved)", key->key_id, 8);
- wpa_hexdump(MSG_DEBUG, " key_mic", key->key_mic, 16);
+ wpa_hexdump(MSG_DEBUG, " key_mic", mic, mic_len);
#endif /* CONFIG_NO_STDOUT_DEBUG */
}
int wpa_sm_rx_eapol(struct wpa_sm *sm, const u8 *src_addr,
const u8 *buf, size_t len)
{
- size_t plen, data_len, extra_len;
- struct ieee802_1x_hdr *hdr;
+ size_t plen, data_len, key_data_len;
+ const struct ieee802_1x_hdr *hdr;
struct wpa_eapol_key *key;
+ struct wpa_eapol_key_192 *key192;
u16 key_info, ver;
- u8 *tmp;
+ u8 *tmp = NULL;
int ret = -1;
struct wpa_peerkey *peerkey = NULL;
+ u8 *key_data;
+ size_t mic_len, keyhdrlen;
#ifdef CONFIG_IEEE80211R
sm->ft_completed = 0;
#endif /* CONFIG_IEEE80211R */
- if (len < sizeof(*hdr) + sizeof(*key)) {
- wpa_printf(MSG_DEBUG, "WPA: EAPOL frame too short to be a WPA "
- "EAPOL-Key (len %lu, expecting at least %lu)",
- (unsigned long) len,
- (unsigned long) sizeof(*hdr) + sizeof(*key));
+ mic_len = wpa_mic_len(sm->key_mgmt);
+ keyhdrlen = mic_len == 24 ? sizeof(*key192) : sizeof(*key);
+
+ if (len < sizeof(*hdr) + keyhdrlen) {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: EAPOL frame too short to be a WPA "
+ "EAPOL-Key (len %lu, expecting at least %lu)",
+ (unsigned long) len,
+ (unsigned long) sizeof(*hdr) + keyhdrlen);
return 0;
}
- tmp = os_malloc(len);
- if (tmp == NULL)
- return -1;
- os_memcpy(tmp, buf, len);
-
- hdr = (struct ieee802_1x_hdr *) tmp;
- key = (struct wpa_eapol_key *) (hdr + 1);
+ hdr = (const struct ieee802_1x_hdr *) buf;
plen = be_to_host16(hdr->length);
data_len = plen + sizeof(*hdr);
- wpa_printf(MSG_DEBUG, "IEEE 802.1X RX: version=%d type=%d length=%lu",
- hdr->version, hdr->type, (unsigned long) plen);
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "IEEE 802.1X RX: version=%d type=%d length=%lu",
+ hdr->version, hdr->type, (unsigned long) plen);
if (hdr->version < EAPOL_VERSION) {
/* TODO: backwards compatibility */
}
if (hdr->type != IEEE802_1X_TYPE_EAPOL_KEY) {
- wpa_printf(MSG_DEBUG, "WPA: EAPOL frame (type %u) discarded, "
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: EAPOL frame (type %u) discarded, "
"not a Key frame", hdr->type);
ret = 0;
goto out;
}
- if (plen > len - sizeof(*hdr) || plen < sizeof(*key)) {
- wpa_printf(MSG_DEBUG, "WPA: EAPOL frame payload size %lu "
- "invalid (frame size %lu)",
- (unsigned long) plen, (unsigned long) len);
+ wpa_hexdump(MSG_MSGDUMP, "WPA: RX EAPOL-Key", buf, len);
+ if (plen > len - sizeof(*hdr) || plen < keyhdrlen) {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: EAPOL frame payload size %lu "
+ "invalid (frame size %lu)",
+ (unsigned long) plen, (unsigned long) len);
ret = 0;
goto out;
}
+ if (data_len < len) {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: ignoring %lu bytes after the IEEE 802.1X data",
+ (unsigned long) len - data_len);
+ }
+
+ /*
+ * Make a copy of the frame since we need to modify the buffer during
+ * MAC validation and Key Data decryption.
+ */
+ tmp = os_malloc(data_len);
+ if (tmp == NULL)
+ goto out;
+ os_memcpy(tmp, buf, data_len);
+ key = (struct wpa_eapol_key *) (tmp + sizeof(struct ieee802_1x_hdr));
+ key192 = (struct wpa_eapol_key_192 *)
+ (tmp + sizeof(struct ieee802_1x_hdr));
+ if (mic_len == 24)
+ key_data = (u8 *) (key192 + 1);
+ else
+ key_data = (u8 *) (key + 1);
if (key->type != EAPOL_KEY_TYPE_WPA && key->type != EAPOL_KEY_TYPE_RSN)
{
- wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key type (%d) unknown, "
- "discarded", key->type);
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: EAPOL-Key type (%d) unknown, discarded",
+ key->type);
ret = 0;
goto out;
}
- wpa_eapol_key_dump(key);
- eapol_sm_notify_lower_layer_success(sm->eapol, 0);
- wpa_hexdump(MSG_MSGDUMP, "WPA: RX EAPOL-Key", tmp, len);
- if (data_len < len) {
- wpa_printf(MSG_DEBUG, "WPA: ignoring %lu bytes after the IEEE "
- "802.1X data", (unsigned long) len - data_len);
+ if (mic_len == 24)
+ key_data_len = WPA_GET_BE16(key192->key_data_length);
+ else
+ key_data_len = WPA_GET_BE16(key->key_data_length);
+ wpa_eapol_key_dump(sm, key, key_data_len, key192->key_mic, mic_len);
+
+ if (key_data_len > plen - keyhdrlen) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO, "WPA: Invalid EAPOL-Key "
+ "frame - key_data overflow (%u > %u)",
+ (unsigned int) key_data_len,
+ (unsigned int) (plen - keyhdrlen));
+ goto out;
}
+
+ eapol_sm_notify_lower_layer_success(sm->eapol, 0);
key_info = WPA_GET_BE16(key->key_info);
ver = key_info & WPA_KEY_INFO_TYPE_MASK;
if (ver != WPA_KEY_INFO_TYPE_HMAC_MD5_RC4 &&
#if defined(CONFIG_IEEE80211R) || defined(CONFIG_IEEE80211W)
ver != WPA_KEY_INFO_TYPE_AES_128_CMAC &&
#endif /* CONFIG_IEEE80211R || CONFIG_IEEE80211W */
- ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) {
- wpa_printf(MSG_INFO, "WPA: Unsupported EAPOL-Key descriptor "
- "version %d.", ver);
+ ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES &&
+ !wpa_key_mgmt_suite_b(sm->key_mgmt) &&
+ sm->key_mgmt != WPA_KEY_MGMT_OSEN) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: Unsupported EAPOL-Key descriptor version %d",
+ ver);
+ goto out;
+ }
+
+ if (sm->key_mgmt == WPA_KEY_MGMT_OSEN &&
+ ver != WPA_KEY_INFO_TYPE_AKM_DEFINED) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "OSEN: Unsupported EAPOL-Key descriptor version %d",
+ ver);
+ goto out;
+ }
+
+ if (wpa_key_mgmt_suite_b(sm->key_mgmt) &&
+ ver != WPA_KEY_INFO_TYPE_AKM_DEFINED) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "RSN: Unsupported EAPOL-Key descriptor version %d (expected AKM defined = 0)",
+ ver);
goto out;
}
if (wpa_key_mgmt_ft(sm->key_mgmt)) {
/* IEEE 802.11r uses a new key_info type (AES-128-CMAC). */
if (ver != WPA_KEY_INFO_TYPE_AES_128_CMAC) {
- wpa_printf(MSG_INFO, "FT: AP did not use "
- "AES-128-CMAC.");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "FT: AP did not use AES-128-CMAC");
goto out;
}
} else
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
if (wpa_key_mgmt_sha256(sm->key_mgmt)) {
- if (ver != WPA_KEY_INFO_TYPE_AES_128_CMAC) {
- wpa_printf(MSG_INFO, "WPA: AP did not use the "
- "negotiated AES-128-CMAC.");
+ if (ver != WPA_KEY_INFO_TYPE_AES_128_CMAC &&
+ sm->key_mgmt != WPA_KEY_MGMT_OSEN &&
+ !wpa_key_mgmt_suite_b(sm->key_mgmt)) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: AP did not use the "
+ "negotiated AES-128-CMAC");
goto out;
}
} else
#endif /* CONFIG_IEEE80211W */
if (sm->pairwise_cipher == WPA_CIPHER_CCMP &&
+ !wpa_key_mgmt_suite_b(sm->key_mgmt) &&
ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) {
- wpa_printf(MSG_INFO, "WPA: CCMP is used, but EAPOL-Key "
- "descriptor version (%d) is not 2.", ver);
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: CCMP is used, but EAPOL-Key "
+ "descriptor version (%d) is not 2", ver);
if (sm->group_cipher != WPA_CIPHER_CCMP &&
!(key_info & WPA_KEY_INFO_KEY_TYPE)) {
/* Earlier versions of IEEE 802.11i did not explicitly
* require version 2 descriptor for all EAPOL-Key
* packets, so allow group keys to use version 1 if
* CCMP is not used for them. */
- wpa_printf(MSG_INFO, "WPA: Backwards compatibility: "
- "allow invalid version for non-CCMP group "
- "keys");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: Backwards compatibility: allow invalid "
+ "version for non-CCMP group keys");
+ } else if (ver == WPA_KEY_INFO_TYPE_AES_128_CMAC) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: Interoperability workaround: allow incorrect (should have been HMAC-SHA1), but stronger (is AES-128-CMAC), descriptor version to be used");
} else
goto out;
+ } else if (sm->pairwise_cipher == WPA_CIPHER_GCMP &&
+ !wpa_key_mgmt_suite_b(sm->key_mgmt) &&
+ ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: GCMP is used, but EAPOL-Key "
+ "descriptor version (%d) is not 2", ver);
+ goto out;
}
#ifdef CONFIG_PEERKEY
if (!peerkey->initiator && peerkey->replay_counter_set &&
os_memcmp(key->replay_counter, peerkey->replay_counter,
WPA_REPLAY_COUNTER_LEN) <= 0) {
- wpa_printf(MSG_WARNING, "RSN: EAPOL-Key Replay "
- "Counter did not increase (STK) - dropping "
- "packet");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "RSN: EAPOL-Key Replay Counter did not "
+ "increase (STK) - dropping packet");
goto out;
} else if (peerkey->initiator) {
u8 _tmp[WPA_REPLAY_COUNTER_LEN];
inc_byte_array(_tmp, WPA_REPLAY_COUNTER_LEN);
if (os_memcmp(_tmp, peerkey->replay_counter,
WPA_REPLAY_COUNTER_LEN) != 0) {
- wpa_printf(MSG_DEBUG, "RSN: EAPOL-Key Replay "
- "Counter did not match (STK) - "
- "dropping packet");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: EAPOL-Key Replay "
+ "Counter did not match (STK) - "
+ "dropping packet");
goto out;
}
}
}
if (peerkey && peerkey->initiator && (key_info & WPA_KEY_INFO_ACK)) {
- wpa_printf(MSG_INFO, "RSN: Ack bit in key_info from STK peer");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "RSN: Ack bit in key_info from STK peer");
goto out;
}
#endif /* CONFIG_PEERKEY */
if (!peerkey && sm->rx_replay_counter_set &&
os_memcmp(key->replay_counter, sm->rx_replay_counter,
WPA_REPLAY_COUNTER_LEN) <= 0) {
- wpa_printf(MSG_WARNING, "WPA: EAPOL-Key Replay Counter did not"
- " increase - dropping packet");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: EAPOL-Key Replay Counter did not increase - "
+ "dropping packet");
goto out;
}
&& (peerkey == NULL || !peerkey->initiator)
#endif /* CONFIG_PEERKEY */
) {
- wpa_printf(MSG_INFO, "WPA: No Ack bit in key_info");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: No Ack bit in key_info");
goto out;
}
if (key_info & WPA_KEY_INFO_REQUEST) {
- wpa_printf(MSG_INFO, "WPA: EAPOL-Key with Request bit - "
- "dropped");
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: EAPOL-Key with Request bit - dropped");
goto out;
}
if ((key_info & WPA_KEY_INFO_MIC) && !peerkey &&
- wpa_supplicant_verify_eapol_key_mic(sm, key, ver, tmp, data_len))
+ wpa_supplicant_verify_eapol_key_mic(sm, key192, ver, tmp, data_len))
goto out;
#ifdef CONFIG_PEERKEY
if ((key_info & WPA_KEY_INFO_MIC) && peerkey &&
- peerkey_verify_eapol_key_mic(sm, peerkey, key, ver, tmp, data_len))
+ peerkey_verify_eapol_key_mic(sm, peerkey, key192, ver, tmp,
+ data_len))
goto out;
#endif /* CONFIG_PEERKEY */
- extra_len = data_len - sizeof(*hdr) - sizeof(*key);
-
- if (WPA_GET_BE16(key->key_data_length) > extra_len) {
- wpa_msg(sm->ctx->msg_ctx, MSG_INFO, "WPA: Invalid EAPOL-Key "
- "frame - key_data overflow (%d > %lu)",
- WPA_GET_BE16(key->key_data_length),
- (unsigned long) extra_len);
- goto out;
- }
- extra_len = WPA_GET_BE16(key->key_data_length);
-
- if (sm->proto == WPA_PROTO_RSN &&
+ if ((sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) &&
(key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) {
- if (wpa_supplicant_decrypt_key_data(sm, key, ver))
+ if (wpa_supplicant_decrypt_key_data(sm, key, ver, key_data,
+ &key_data_len))
goto out;
- extra_len = WPA_GET_BE16(key->key_data_length);
}
if (key_info & WPA_KEY_INFO_KEY_TYPE) {
if (key_info & WPA_KEY_INFO_KEY_INDEX_MASK) {
- wpa_printf(MSG_WARNING, "WPA: Ignored EAPOL-Key "
- "(Pairwise) with non-zero key index");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Ignored EAPOL-Key (Pairwise) with "
+ "non-zero key index");
goto out;
}
if (peerkey) {
/* PeerKey 4-Way Handshake */
- peerkey_rx_eapol_4way(sm, peerkey, key, key_info, ver);
+ peerkey_rx_eapol_4way(sm, peerkey, key, key_info, ver,
+ key_data, key_data_len);
} else if (key_info & WPA_KEY_INFO_MIC) {
/* 3/4 4-Way Handshake */
- wpa_supplicant_process_3_of_4(sm, key, ver);
+ wpa_supplicant_process_3_of_4(sm, key, ver, key_data,
+ key_data_len);
} else {
/* 1/4 4-Way Handshake */
wpa_supplicant_process_1_of_4(sm, src_addr, key,
- ver);
+ ver, key_data,
+ key_data_len);
}
} else if (key_info & WPA_KEY_INFO_SMK_MESSAGE) {
/* PeerKey SMK Handshake */
- peerkey_rx_eapol_smk(sm, src_addr, key, extra_len, key_info,
+ peerkey_rx_eapol_smk(sm, src_addr, key, key_data_len, key_info,
ver);
} else {
if (key_info & WPA_KEY_INFO_MIC) {
/* 1/2 Group Key Handshake */
wpa_supplicant_process_1_of_2(sm, src_addr, key,
- extra_len, ver);
+ key_data, key_data_len,
+ ver);
} else {
- wpa_printf(MSG_WARNING, "WPA: EAPOL-Key (Group) "
- "without Mic bit - dropped");
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: EAPOL-Key (Group) without Mic bit - "
+ "dropped");
}
}
ret = 1;
out:
- os_free(tmp);
+ bin_clear_free(tmp, data_len);
return ret;
}
#ifdef CONFIG_CTRL_IFACE
-static int wpa_cipher_bits(int cipher)
-{
- switch (cipher) {
- case WPA_CIPHER_CCMP:
- return 128;
- case WPA_CIPHER_TKIP:
- return 256;
- case WPA_CIPHER_WEP104:
- return 104;
- case WPA_CIPHER_WEP40:
- return 40;
- default:
- return 0;
- }
-}
-
-
static u32 wpa_key_mgmt_suite(struct wpa_sm *sm)
{
switch (sm->key_mgmt) {
case WPA_KEY_MGMT_IEEE8021X:
- return (sm->proto == WPA_PROTO_RSN ?
+ return ((sm->proto == WPA_PROTO_RSN ||
+ sm->proto == WPA_PROTO_OSEN) ?
RSN_AUTH_KEY_MGMT_UNSPEC_802_1X :
WPA_AUTH_KEY_MGMT_UNSPEC_802_1X);
case WPA_KEY_MGMT_PSK:
case WPA_KEY_MGMT_PSK_SHA256:
return RSN_AUTH_KEY_MGMT_PSK_SHA256;
#endif /* CONFIG_IEEE80211W */
+ case WPA_KEY_MGMT_CCKM:
+ return (sm->proto == WPA_PROTO_RSN ?
+ RSN_AUTH_KEY_MGMT_CCKM:
+ WPA_AUTH_KEY_MGMT_CCKM);
case WPA_KEY_MGMT_WPA_NONE:
return WPA_AUTH_KEY_MGMT_NONE;
- default:
- return 0;
- }
-}
-
-
-static u32 wpa_cipher_suite(struct wpa_sm *sm, int cipher)
-{
- switch (cipher) {
- case WPA_CIPHER_CCMP:
- return (sm->proto == WPA_PROTO_RSN ?
- RSN_CIPHER_SUITE_CCMP : WPA_CIPHER_SUITE_CCMP);
- case WPA_CIPHER_TKIP:
- return (sm->proto == WPA_PROTO_RSN ?
- RSN_CIPHER_SUITE_TKIP : WPA_CIPHER_SUITE_TKIP);
- case WPA_CIPHER_WEP104:
- return (sm->proto == WPA_PROTO_RSN ?
- RSN_CIPHER_SUITE_WEP104 : WPA_CIPHER_SUITE_WEP104);
- case WPA_CIPHER_WEP40:
- return (sm->proto == WPA_PROTO_RSN ?
- RSN_CIPHER_SUITE_WEP40 : WPA_CIPHER_SUITE_WEP40);
- case WPA_CIPHER_NONE:
- return (sm->proto == WPA_PROTO_RSN ?
- RSN_CIPHER_SUITE_NONE : WPA_CIPHER_SUITE_NONE);
+ case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
+ return RSN_AUTH_KEY_MGMT_802_1X_SUITE_B;
+ case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
+ return RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192;
default:
return 0;
}
rsna ? "TRUE" : "FALSE",
rsna ? "TRUE" : "FALSE",
RSN_VERSION,
- wpa_cipher_bits(sm->group_cipher),
+ wpa_cipher_key_len(sm->group_cipher) * 8,
sm->dot11RSNAConfigPMKLifetime,
sm->dot11RSNAConfigPMKReauthThreshold,
sm->dot11RSNAConfigSATimeout);
- if (ret < 0 || (size_t) ret >= buflen)
+ if (os_snprintf_error(buflen, ret))
return 0;
len = ret;
"dot11RSNAConfigNumberOfGTKSAReplayCounters=0\n"
"dot11RSNA4WayHandshakeFailures=%u\n",
RSN_SUITE_ARG(wpa_key_mgmt_suite(sm)),
- RSN_SUITE_ARG(wpa_cipher_suite(sm, sm->pairwise_cipher)),
- RSN_SUITE_ARG(wpa_cipher_suite(sm, sm->group_cipher)),
+ RSN_SUITE_ARG(wpa_cipher_to_suite(sm->proto,
+ sm->pairwise_cipher)),
+ RSN_SUITE_ARG(wpa_cipher_to_suite(sm->proto,
+ sm->group_cipher)),
pmkid_txt,
RSN_SUITE_ARG(wpa_key_mgmt_suite(sm)),
- RSN_SUITE_ARG(wpa_cipher_suite(sm, sm->pairwise_cipher)),
- RSN_SUITE_ARG(wpa_cipher_suite(sm, sm->group_cipher)),
+ RSN_SUITE_ARG(wpa_cipher_to_suite(sm->proto,
+ sm->pairwise_cipher)),
+ RSN_SUITE_ARG(wpa_cipher_to_suite(sm->proto,
+ sm->group_cipher)),
sm->dot11RSNA4WayHandshakeFailures);
- if (ret >= 0 && (size_t) ret < buflen)
+ if (!os_snprintf_error(buflen - len, ret))
len += ret;
return (int) len;
static void wpa_sm_pmksa_free_cb(struct rsn_pmksa_cache_entry *entry,
- void *ctx, int replace)
+ void *ctx, enum pmksa_free_reason reason)
{
struct wpa_sm *sm = ctx;
+ int deauth = 0;
+
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "RSN: PMKSA cache entry free_cb: "
+ MACSTR " reason=%d", MAC2STR(entry->aa), reason);
+
+ if (sm->cur_pmksa == entry) {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: %s current PMKSA entry",
+ reason == PMKSA_REPLACE ? "replaced" : "removed");
+ pmksa_cache_clear_current(sm);
+
+ /*
+ * If an entry is simply being replaced, there's no need to
+ * deauthenticate because it will be immediately re-added.
+ * This happens when EAP authentication is completed again
+ * (reauth or failed PMKSA caching attempt).
+ */
+ if (reason != PMKSA_REPLACE)
+ deauth = 1;
+ }
- if (sm->cur_pmksa == entry ||
+ if (reason == PMKSA_EXPIRE &&
(sm->pmk_len == entry->pmk_len &&
os_memcmp(sm->pmk, entry->pmk, sm->pmk_len) == 0)) {
- wpa_printf(MSG_DEBUG, "RSN: removed current PMKSA entry");
- sm->cur_pmksa = NULL;
-
- if (replace) {
- /* A new entry is being added, so no need to
- * deauthenticate in this case. This happens when EAP
- * authentication is completed again (reauth or failed
- * PMKSA caching attempt). */
- return;
- }
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "RSN: deauthenticating due to expired PMK");
+ pmksa_cache_clear_current(sm);
+ deauth = 1;
+ }
+ if (deauth) {
os_memset(sm->pmk, 0, sizeof(sm->pmk));
wpa_sm_deauthenticate(sm, WLAN_REASON_UNSPECIFIED);
}
sm->pmksa = pmksa_cache_init(wpa_sm_pmksa_free_cb, sm, sm);
if (sm->pmksa == NULL) {
- wpa_printf(MSG_ERROR, "RSN: PMKSA cache initialization "
- "failed");
+ wpa_msg(sm->ctx->msg_ctx, MSG_ERROR,
+ "RSN: PMKSA cache initialization failed");
os_free(sm);
return NULL;
}
os_free(sm->assoc_wpa_ie);
os_free(sm->ap_wpa_ie);
os_free(sm->ap_rsn_ie);
+ wpa_sm_drop_sa(sm);
os_free(sm->ctx);
peerkey_deinit(sm);
#ifdef CONFIG_IEEE80211R
if (sm == NULL)
return;
- wpa_printf(MSG_DEBUG, "WPA: Association event - clear replay counter");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: Association event - clear replay counter");
os_memcpy(sm->bssid, bssid, ETH_ALEN);
os_memset(sm->rx_replay_counter, 0, WPA_REPLAY_COUNTER_LEN);
sm->rx_replay_counter_set = 0;
* IEEE 802.11, 8.4.10: Delete PTK SA on (re)association if
* this is not part of a Fast BSS Transition.
*/
- wpa_printf(MSG_DEBUG, "WPA: Clear old PTK");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Clear old PTK");
sm->ptk_set = 0;
+ os_memset(&sm->ptk, 0, sizeof(sm->ptk));
sm->tptk_set = 0;
+ os_memset(&sm->tptk, 0, sizeof(sm->tptk));
}
+
+#ifdef CONFIG_TDLS
+ wpa_tdls_assoc(sm);
+#endif /* CONFIG_TDLS */
+
+#ifdef CONFIG_P2P
+ os_memset(sm->p2p_ip_addr, 0, sizeof(sm->p2p_ip_addr));
+#endif /* CONFIG_P2P */
}
*/
void wpa_sm_notify_disassoc(struct wpa_sm *sm)
{
+ eloop_cancel_timeout(wpa_sm_start_preauth, sm, NULL);
+ eloop_cancel_timeout(wpa_sm_rekey_ptk, sm, NULL);
+ peerkey_deinit(sm);
rsn_preauth_deinit(sm);
+ pmksa_cache_clear_current(sm);
if (wpa_sm_get_state(sm) == WPA_4WAY_HANDSHAKE)
sm->dot11RSNA4WayHandshakeFailures++;
+#ifdef CONFIG_TDLS
+ wpa_tdls_disassoc(sm);
+#endif /* CONFIG_TDLS */
+
+ /* Keys are not needed in the WPA state machine anymore */
+ wpa_sm_drop_sa(sm);
+
+ sm->msg_3_of_4_ok = 0;
}
* @sm: Pointer to WPA state machine data from wpa_sm_init()
* @pmk: The new PMK
* @pmk_len: The length of the new PMK in bytes
+ * @bssid: AA to add into PMKSA cache or %NULL to not cache the PMK
*
* Configure the PMK for WPA state machine.
*/
-void wpa_sm_set_pmk(struct wpa_sm *sm, const u8 *pmk, size_t pmk_len)
+void wpa_sm_set_pmk(struct wpa_sm *sm, const u8 *pmk, size_t pmk_len,
+ const u8 *bssid)
{
if (sm == NULL)
return;
sm->xxkey_len = pmk_len;
os_memcpy(sm->xxkey, pmk, pmk_len);
#endif /* CONFIG_IEEE80211R */
+
+ if (bssid) {
+ pmksa_cache_add(sm->pmksa, pmk, pmk_len, NULL, 0,
+ bssid, sm->own_addr,
+ sm->network_ctx, sm->key_mgmt);
+ }
}
} else
sm->ssid_len = 0;
sm->wpa_ptk_rekey = config->wpa_ptk_rekey;
+ sm->p2p = config->p2p;
} else {
sm->network_ctx = NULL;
sm->peerkey_enabled = 0;
sm->eap_conf_ctx = NULL;
sm->ssid_len = 0;
sm->wpa_ptk_rekey = 0;
+ sm->p2p = 0;
}
- if (config == NULL || config->network_ctx != sm->network_ctx)
- pmksa_cache_notify_reconfig(sm->pmksa);
}
/**
- * wpa_sm_get_param - Get WPA state machine parameters
- * @sm: Pointer to WPA state machine data from wpa_sm_init()
- * @param: Parameter field
- * Returns: Parameter value
- */
-unsigned int wpa_sm_get_param(struct wpa_sm *sm, enum wpa_sm_conf_params param)
-{
- if (sm == NULL)
- return 0;
-
- switch (param) {
- case RSNA_PMK_LIFETIME:
- return sm->dot11RSNAConfigPMKLifetime;
- case RSNA_PMK_REAUTH_THRESHOLD:
- return sm->dot11RSNAConfigPMKReauthThreshold;
- case RSNA_SA_TIMEOUT:
- return sm->dot11RSNAConfigSATimeout;
- case WPA_PARAM_PROTO:
- return sm->proto;
- case WPA_PARAM_PAIRWISE:
- return sm->pairwise_cipher;
- case WPA_PARAM_GROUP:
- return sm->group_cipher;
- case WPA_PARAM_KEY_MGMT:
- return sm->key_mgmt;
-#ifdef CONFIG_IEEE80211W
- case WPA_PARAM_MGMT_GROUP:
- return sm->mgmt_group_cipher;
-#endif /* CONFIG_IEEE80211W */
- case WPA_PARAM_RSN_ENABLED:
- return sm->rsn_enabled;
- default:
- return 0;
- }
-}
-
-
-/**
* wpa_sm_get_status - Get WPA state machine
* @sm: Pointer to WPA state machine data from wpa_sm_init()
* @buf: Buffer for status information
wpa_cipher_txt(sm->pairwise_cipher),
wpa_cipher_txt(sm->group_cipher),
wpa_key_mgmt_txt(sm->key_mgmt, sm->proto));
- if (ret < 0 || ret >= end - pos)
+ if (os_snprintf_error(end - pos, ret))
return pos - buf;
pos += ret;
+
+ if (sm->mfp != NO_MGMT_FRAME_PROTECTION && sm->ap_rsn_ie) {
+ struct wpa_ie_data rsn;
+ if (wpa_parse_wpa_ie_rsn(sm->ap_rsn_ie, sm->ap_rsn_ie_len, &rsn)
+ >= 0 &&
+ rsn.capabilities & (WPA_CAPABILITY_MFPR |
+ WPA_CAPABILITY_MFPC)) {
+ ret = os_snprintf(pos, end - pos, "pmf=%d\n",
+ (rsn.capabilities &
+ WPA_CAPABILITY_MFPR) ? 2 : 1);
+ if (os_snprintf_error(end - pos, ret))
+ return pos - buf;
+ pos += ret;
+ }
+ }
+
return pos - buf;
}
+int wpa_sm_pmf_enabled(struct wpa_sm *sm)
+{
+ struct wpa_ie_data rsn;
+
+ if (sm->mfp == NO_MGMT_FRAME_PROTECTION || !sm->ap_rsn_ie)
+ return 0;
+
+ if (wpa_parse_wpa_ie_rsn(sm->ap_rsn_ie, sm->ap_rsn_ie_len, &rsn) >= 0 &&
+ rsn.capabilities & (WPA_CAPABILITY_MFPR | WPA_CAPABILITY_MFPC))
+ return 1;
+
+ return 0;
+}
+
+
/**
* wpa_sm_set_assoc_wpa_ie_default - Generate own WPA/RSN IE from configuration
* @sm: Pointer to WPA state machine data from wpa_sm_init()
os_free(sm->assoc_wpa_ie);
if (ie == NULL || len == 0) {
- wpa_printf(MSG_DEBUG, "WPA: clearing own WPA/RSN IE");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: clearing own WPA/RSN IE");
sm->assoc_wpa_ie = NULL;
sm->assoc_wpa_ie_len = 0;
} else {
os_free(sm->ap_wpa_ie);
if (ie == NULL || len == 0) {
- wpa_printf(MSG_DEBUG, "WPA: clearing AP WPA IE");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: clearing AP WPA IE");
sm->ap_wpa_ie = NULL;
sm->ap_wpa_ie_len = 0;
} else {
os_free(sm->ap_rsn_ie);
if (ie == NULL || len == 0) {
- wpa_printf(MSG_DEBUG, "WPA: clearing AP RSN IE");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: clearing AP RSN IE");
sm->ap_rsn_ie = NULL;
sm->ap_rsn_ie_len = 0;
} else {
*/
int wpa_sm_parse_own_wpa_ie(struct wpa_sm *sm, struct wpa_ie_data *data)
{
- if (sm == NULL || sm->assoc_wpa_ie == NULL) {
- wpa_printf(MSG_DEBUG, "WPA: No WPA/RSN IE available from "
- "association info");
+ if (sm == NULL)
+ return -1;
+
+ if (sm->assoc_wpa_ie == NULL) {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: No WPA/RSN IE available from association info");
return -1;
}
if (wpa_parse_wpa_ie(sm->assoc_wpa_ie, sm->assoc_wpa_ie_len, data))
int wpa_sm_pmksa_cache_list(struct wpa_sm *sm, char *buf, size_t len)
{
-#ifndef CONFIG_NO_WPA2
return pmksa_cache_list(sm->pmksa, buf, len);
-#else /* CONFIG_NO_WPA2 */
- return -1;
-#endif /* CONFIG_NO_WPA2 */
}
void wpa_sm_drop_sa(struct wpa_sm *sm)
{
- wpa_printf(MSG_DEBUG, "WPA: Clear old PMK and PTK");
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Clear old PMK and PTK");
sm->ptk_set = 0;
sm->tptk_set = 0;
os_memset(sm->pmk, 0, sizeof(sm->pmk));
os_memset(&sm->ptk, 0, sizeof(sm->ptk));
os_memset(&sm->tptk, 0, sizeof(sm->tptk));
+#ifdef CONFIG_IEEE80211R
+ os_memset(sm->xxkey, 0, sizeof(sm->xxkey));
+ os_memset(sm->pmk_r0, 0, sizeof(sm->pmk_r0));
+ os_memset(sm->pmk_r1, 0, sizeof(sm->pmk_r1));
+#endif /* CONFIG_IEEE80211R */
}
return 0;
return sm->ptk_set;
}
+
+
+void wpa_sm_update_replay_ctr(struct wpa_sm *sm, const u8 *replay_ctr)
+{
+ os_memcpy(sm->rx_replay_counter, replay_ctr, WPA_REPLAY_COUNTER_LEN);
+}
+
+
+void wpa_sm_pmksa_cache_flush(struct wpa_sm *sm, void *network_ctx)
+{
+ pmksa_cache_flush(sm->pmksa, network_ctx, NULL, 0);
+}
+
+
+#ifdef CONFIG_WNM
+int wpa_wnmsleep_install_key(struct wpa_sm *sm, u8 subelem_id, u8 *buf)
+{
+ u16 keyinfo;
+ u8 keylen; /* plaintext key len */
+ u8 *key_rsc;
+
+ if (subelem_id == WNM_SLEEP_SUBELEM_GTK) {
+ struct wpa_gtk_data gd;
+
+ os_memset(&gd, 0, sizeof(gd));
+ keylen = wpa_cipher_key_len(sm->group_cipher);
+ gd.key_rsc_len = wpa_cipher_rsc_len(sm->group_cipher);
+ gd.alg = wpa_cipher_to_alg(sm->group_cipher);
+ if (gd.alg == WPA_ALG_NONE) {
+ wpa_printf(MSG_DEBUG, "Unsupported group cipher suite");
+ return -1;
+ }
+
+ key_rsc = buf + 5;
+ keyinfo = WPA_GET_LE16(buf + 2);
+ gd.gtk_len = keylen;
+ if (gd.gtk_len != buf[4]) {
+ wpa_printf(MSG_DEBUG, "GTK len mismatch len %d vs %d",
+ gd.gtk_len, buf[4]);
+ return -1;
+ }
+ gd.keyidx = keyinfo & 0x03; /* B0 - B1 */
+ gd.tx = wpa_supplicant_gtk_tx_bit_workaround(
+ sm, !!(keyinfo & WPA_KEY_INFO_TXRX));
+
+ os_memcpy(gd.gtk, buf + 13, gd.gtk_len);
+
+ wpa_hexdump_key(MSG_DEBUG, "Install GTK (WNM SLEEP)",
+ gd.gtk, gd.gtk_len);
+ if (wpa_supplicant_install_gtk(sm, &gd, key_rsc)) {
+ os_memset(&gd, 0, sizeof(gd));
+ wpa_printf(MSG_DEBUG, "Failed to install the GTK in "
+ "WNM mode");
+ return -1;
+ }
+ os_memset(&gd, 0, sizeof(gd));
+#ifdef CONFIG_IEEE80211W
+ } else if (subelem_id == WNM_SLEEP_SUBELEM_IGTK) {
+ struct wpa_igtk_kde igd;
+ u16 keyidx;
+
+ os_memset(&igd, 0, sizeof(igd));
+ keylen = wpa_cipher_key_len(sm->mgmt_group_cipher);
+ os_memcpy(igd.keyid, buf + 2, 2);
+ os_memcpy(igd.pn, buf + 4, 6);
+
+ keyidx = WPA_GET_LE16(igd.keyid);
+ os_memcpy(igd.igtk, buf + 10, keylen);
+
+ wpa_hexdump_key(MSG_DEBUG, "Install IGTK (WNM SLEEP)",
+ igd.igtk, keylen);
+ if (wpa_sm_set_key(sm, wpa_cipher_to_alg(sm->mgmt_group_cipher),
+ broadcast_ether_addr,
+ keyidx, 0, igd.pn, sizeof(igd.pn),
+ igd.igtk, keylen) < 0) {
+ wpa_printf(MSG_DEBUG, "Failed to install the IGTK in "
+ "WNM mode");
+ os_memset(&igd, 0, sizeof(igd));
+ return -1;
+ }
+ os_memset(&igd, 0, sizeof(igd));
+#endif /* CONFIG_IEEE80211W */
+ } else {
+ wpa_printf(MSG_DEBUG, "Unknown element id");
+ return -1;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_WNM */
+
+
+#ifdef CONFIG_PEERKEY
+int wpa_sm_rx_eapol_peerkey(struct wpa_sm *sm, const u8 *src_addr,
+ const u8 *buf, size_t len)
+{
+ struct wpa_peerkey *peerkey;
+
+ for (peerkey = sm->peerkey; peerkey; peerkey = peerkey->next) {
+ if (os_memcmp(peerkey->addr, src_addr, ETH_ALEN) == 0)
+ break;
+ }
+
+ if (!peerkey)
+ return 0;
+
+ wpa_sm_rx_eapol(sm, src_addr, buf, len);
+
+ return 1;
+}
+#endif /* CONFIG_PEERKEY */
+
+
+#ifdef CONFIG_P2P
+
+int wpa_sm_get_p2p_ip_addr(struct wpa_sm *sm, u8 *buf)
+{
+ if (sm == NULL || WPA_GET_BE32(sm->p2p_ip_addr) == 0)
+ return -1;
+ os_memcpy(buf, sm->p2p_ip_addr, 3 * 4);
+ return 0;
+}
+
+#endif /* CONFIG_P2P */
+
+
+void wpa_sm_set_rx_replay_ctr(struct wpa_sm *sm, const u8 *rx_replay_counter)
+{
+ if (rx_replay_counter == NULL)
+ return;
+
+ os_memcpy(sm->rx_replay_counter, rx_replay_counter,
+ WPA_REPLAY_COUNTER_LEN);
+ sm->rx_replay_counter_set = 1;
+ wpa_printf(MSG_DEBUG, "Updated key replay counter");
+}
+
+
+void wpa_sm_set_ptk_kck_kek(struct wpa_sm *sm,
+ const u8 *ptk_kck, size_t ptk_kck_len,
+ const u8 *ptk_kek, size_t ptk_kek_len)
+{
+ if (ptk_kck && ptk_kck_len <= WPA_KCK_MAX_LEN) {
+ os_memcpy(sm->ptk.kck, ptk_kck, ptk_kck_len);
+ sm->ptk.kck_len = ptk_kck_len;
+ wpa_printf(MSG_DEBUG, "Updated PTK KCK");
+ }
+ if (ptk_kek && ptk_kek_len <= WPA_KEK_MAX_LEN) {
+ os_memcpy(sm->ptk.kek, ptk_kek, ptk_kek_len);
+ sm->ptk.kek_len = ptk_kek_len;
+ wpa_printf(MSG_DEBUG, "Updated PTK KEK");
+ }
+ sm->ptk_set = 1;
+}
projects / mech_eap.git / blobdiff