/*
* WPA Supplicant - WPA state machine and EAPOL-Key processing
- * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2003-2018, Jouni Malinen <j@w1.fi>
+ * Copyright(c) 2015 Intel Deutschland GmbH
*
* 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.h"
#include "crypto/aes_wrap.h"
#include "crypto/crypto.h"
#include "crypto/random.h"
+#include "crypto/aes_siv.h"
+#include "crypto/sha256.h"
+#include "crypto/sha384.h"
+#include "crypto/sha512.h"
#include "common/ieee802_11_defs.h"
+#include "common/ieee802_11_common.h"
+#include "common/ocv.h"
+#include "eap_common/eap_defs.h"
#include "eapol_supp/eapol_supp_sm.h"
+#include "drivers/driver.h"
#include "wpa.h"
#include "eloop.h"
#include "preauth.h"
#include "pmksa_cache.h"
#include "wpa_i.h"
#include "wpa_ie.h"
-#include "peerkey.h"
+
+
+static const u8 null_rsc[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
/**
* 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
+ * @ptk: PTK for Key Confirmation/Encryption Key
* @ver: Version field from Key Info
* @dest: Destination address for the frame
* @proto: Ethertype (usually ETH_P_EAPOL)
* @msg: EAPOL-Key message
* @msg_len: Length of message
* @key_mic: Pointer to the buffer to which the EAPOL-Key MIC is written
+ * Returns: >= 0 on success, < 0 on failure
*/
-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)
+int wpa_eapol_key_send(struct wpa_sm *sm, struct wpa_ptk *ptk,
+ 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);
+ int ret = -1;
+ size_t mic_len = wpa_mic_len(sm->key_mgmt, sm->pmk_len);
+ wpa_printf(MSG_DEBUG, "WPA: Send EAPOL-Key frame to " MACSTR
+ " ver=%d mic_len=%d key_mgmt=0x%x",
+ MAC2STR(dest), ver, (int) 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
MAC2STR(dest));
}
}
- if (key_mic &&
- 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);
+
+ if (mic_len) {
+ if (key_mic && (!ptk || !ptk->kck_len))
+ goto out;
+
+ if (key_mic &&
+ wpa_eapol_key_mic(ptk->kck, ptk->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;
+ }
+ if (ptk)
+ wpa_hexdump_key(MSG_DEBUG, "WPA: KCK",
+ ptk->kck, ptk->kck_len);
+ wpa_hexdump(MSG_DEBUG, "WPA: Derived Key MIC",
+ key_mic, mic_len);
+ } else {
+#ifdef CONFIG_FILS
+ /* AEAD cipher - Key MIC field not used */
+ struct ieee802_1x_hdr *s_hdr, *hdr;
+ struct wpa_eapol_key *s_key, *key;
+ u8 *buf, *s_key_data, *key_data;
+ size_t buf_len = msg_len + AES_BLOCK_SIZE;
+ size_t key_data_len;
+ u16 eapol_len;
+ const u8 *aad[1];
+ size_t aad_len[1];
+
+ if (!ptk || !ptk->kek_len)
+ goto out;
+
+ key_data_len = msg_len - sizeof(struct ieee802_1x_hdr) -
+ sizeof(struct wpa_eapol_key) - 2;
+
+ buf = os_malloc(buf_len);
+ if (!buf)
+ goto out;
+
+ os_memcpy(buf, msg, msg_len);
+ hdr = (struct ieee802_1x_hdr *) buf;
+ key = (struct wpa_eapol_key *) (hdr + 1);
+ key_data = ((u8 *) (key + 1)) + 2;
+
+ /* Update EAPOL header to include AES-SIV overhead */
+ eapol_len = be_to_host16(hdr->length);
+ eapol_len += AES_BLOCK_SIZE;
+ hdr->length = host_to_be16(eapol_len);
+
+ /* Update Key Data Length field to include AES-SIV overhead */
+ WPA_PUT_BE16((u8 *) (key + 1), AES_BLOCK_SIZE + key_data_len);
+
+ s_hdr = (struct ieee802_1x_hdr *) msg;
+ s_key = (struct wpa_eapol_key *) (s_hdr + 1);
+ s_key_data = ((u8 *) (s_key + 1)) + 2;
+
+ wpa_hexdump_key(MSG_DEBUG, "WPA: Plaintext Key Data",
+ s_key_data, key_data_len);
+
+ wpa_hexdump_key(MSG_DEBUG, "WPA: KEK", ptk->kek, ptk->kek_len);
+ /* AES-SIV AAD from EAPOL protocol version field (inclusive) to
+ * to Key Data (exclusive). */
+ aad[0] = buf;
+ aad_len[0] = key_data - buf;
+ if (aes_siv_encrypt(ptk->kek, ptk->kek_len,
+ s_key_data, key_data_len,
+ 1, aad, aad_len, key_data) < 0) {
+ os_free(buf);
+ goto out;
+ }
+
+ wpa_hexdump(MSG_DEBUG, "WPA: Encrypted Key Data from SIV",
+ key_data, AES_BLOCK_SIZE + key_data_len);
+
+ os_free(msg);
+ msg = buf;
+ msg_len = buf_len;
+#else /* CONFIG_FILS */
goto out;
+#endif /* CONFIG_FILS */
}
- 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);
+ ret = wpa_sm_ether_send(sm, dest, proto, msg, msg_len);
eapol_sm_notify_tx_eapol_key(sm->eapol);
out:
os_free(msg);
+ return ret;
}
{
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, *key_mic;
+ u8 bssid[ETH_ALEN], *rbuf, *key_mic, *mic;
- if (sm->key_mgmt == WPA_KEY_MGMT_OSEN ||
- wpa_key_mgmt_suite_b(sm->key_mgmt))
+ if (wpa_use_akm_defined(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))
return;
}
- mic_len = wpa_mic_len(sm->key_mgmt);
- hdrlen = mic_len == 24 ? sizeof(*reply192) : sizeof(*reply);
+ mic_len = wpa_mic_len(sm->key_mgmt, sm->pmk_len);
+ hdrlen = sizeof(*reply) + mic_len + 2;
rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY, NULL,
hdrlen, &rlen, (void *) &reply);
if (rbuf == NULL)
return;
- reply192 = (struct wpa_eapol_key_192 *) reply;
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)
+ key_info |= WPA_KEY_INFO_SECURE;
+ if (sm->ptk_set && mic_len)
key_info |= WPA_KEY_INFO_MIC;
if (error)
key_info |= WPA_KEY_INFO_ERROR;
WPA_REPLAY_COUNTER_LEN);
inc_byte_array(sm->request_counter, WPA_REPLAY_COUNTER_LEN);
- if (mic_len == 24)
- WPA_PUT_BE16(reply192->key_data_length, 0);
- else
- WPA_PUT_BE16(reply->key_data_length, 0);
+ mic = (u8 *) (reply + 1);
+ WPA_PUT_BE16(mic + mic_len, 0);
if (!(key_info & WPA_KEY_INFO_MIC))
key_mic = NULL;
else
- key_mic = reply192->key_mic; /* same offset in reply */
+ key_mic = mic;
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);
+ wpa_eapol_key_send(sm, &sm->ptk, ver, bssid, ETH_P_EAPOL, rbuf, rlen,
+ key_mic);
}
* 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,
- NULL);
+ NULL, 0);
if (sm->cur_pmksa) {
wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
"RSN: found matching PMKID from PMKSA cache");
eapol_sm_notify_cached(sm->eapol);
#ifdef CONFIG_IEEE80211R
sm->xxkey_len = 0;
+#ifdef CONFIG_SAE
+ if (sm->key_mgmt == WPA_KEY_MGMT_FT_SAE &&
+ sm->pmk_len == PMK_LEN) {
+ /* Need to allow FT key derivation to proceed with
+ * PMK from SAE being used as the XXKey in cases where
+ * the PMKID in msg 1/4 matches the PMKSA entry that was
+ * just added based on SAE authentication for the
+ * initial mobility domain association. */
+ os_memcpy(sm->xxkey, sm->pmk, sm->pmk_len);
+ sm->xxkey_len = sm->pmk_len;
+ }
+#endif /* CONFIG_SAE */
#endif /* CONFIG_IEEE80211R */
} else if (wpa_key_mgmt_wpa_ieee8021x(sm->key_mgmt) && sm->eapol) {
int res, pmk_len;
- pmk_len = PMK_LEN;
- res = eapol_sm_get_key(sm->eapol, sm->pmk, PMK_LEN);
+
+ if (wpa_key_mgmt_sha384(sm->key_mgmt))
+ pmk_len = PMK_LEN_SUITE_B_192;
+ else
+ pmk_len = PMK_LEN;
+ res = eapol_sm_get_key(sm->eapol, sm->pmk, pmk_len);
if (res) {
- /*
- * EAP-LEAP is an exception from other EAP methods: it
- * uses only 16-byte PMK.
- */
- res = eapol_sm_get_key(sm->eapol, sm->pmk, 16);
- pmk_len = 16;
+ if (pmk_len == PMK_LEN) {
+ /*
+ * EAP-LEAP is an exception from other EAP
+ * methods: it uses only 16-byte PMK.
+ */
+ res = eapol_sm_get_key(sm->eapol, sm->pmk, 16);
+ pmk_len = 16;
+ }
} else {
#ifdef CONFIG_IEEE80211R
u8 buf[2 * PMK_LEN];
if (eapol_sm_get_key(sm->eapol, buf, 2 * PMK_LEN) == 0)
{
- os_memcpy(sm->xxkey, buf + PMK_LEN, PMK_LEN);
- sm->xxkey_len = PMK_LEN;
+ if (wpa_key_mgmt_sha384(sm->key_mgmt)) {
+ os_memcpy(sm->xxkey, buf,
+ SHA384_MAC_LEN);
+ sm->xxkey_len = SHA384_MAC_LEN;
+ } else {
+ os_memcpy(sm->xxkey, buf + PMK_LEN,
+ PMK_LEN);
+ sm->xxkey_len = PMK_LEN;
+ }
os_memset(buf, 0, sizeof(buf));
}
#endif /* CONFIG_IEEE80211R */
}
if (res == 0) {
struct rsn_pmksa_cache_entry *sa = NULL;
+ const u8 *fils_cache_id = NULL;
+
+#ifdef CONFIG_FILS
+ if (sm->fils_cache_id_set)
+ fils_cache_id = sm->fils_cache_id;
+#endif /* CONFIG_FILS */
+
wpa_hexdump_key(MSG_DEBUG, "WPA: PMK from EAPOL state "
"machines", sm->pmk, pmk_len);
sm->pmk_len = pmk_len;
!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,
+ sm->pmk, pmk_len, NULL,
NULL, 0,
src_addr, sm->own_addr,
sm->network_ctx,
- sm->key_mgmt);
+ sm->key_mgmt,
+ fils_cache_id);
}
if (!sm->cur_pmksa && pmkid &&
- pmksa_cache_get(sm->pmksa, src_addr, pmkid, NULL))
- {
+ pmksa_cache_get(sm->pmksa, src_addr, pmkid, NULL,
+ 0)) {
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_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "RSN: PMKID mismatch - authentication server may have derived different MSK?!");
+ return -1;
}
if (!sm->cur_pmksa)
* @wpa_ie: WPA/RSN IE
* @wpa_ie_len: Length of the WPA/RSN IE
* @ptk: PTK to use for keyed hash and encryption
- * Returns: 0 on success, -1 on failure
+ * Returns: >= 0 on success, < 0 on failure
*/
int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst,
const struct wpa_eapol_key *key,
{
size_t mic_len, hdrlen, rlen;
struct wpa_eapol_key *reply;
- struct wpa_eapol_key_192 *reply192;
u8 *rbuf, *key_mic;
u8 *rsn_ie_buf = NULL;
+ u16 key_info;
if (wpa_ie == NULL) {
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, "WPA: No wpa_ie set - "
if (rsn_ie_buf == NULL)
return -1;
os_memcpy(rsn_ie_buf, wpa_ie, wpa_ie_len);
- res = wpa_insert_pmkid(rsn_ie_buf, wpa_ie_len,
+ res = wpa_insert_pmkid(rsn_ie_buf, &wpa_ie_len,
sm->pmk_r1_name);
if (res < 0) {
os_free(rsn_ie_buf);
return -1;
}
- wpa_ie_len += res;
if (sm->assoc_resp_ies) {
os_memcpy(rsn_ie_buf + wpa_ie_len, sm->assoc_resp_ies,
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);
+ mic_len = wpa_mic_len(sm->key_mgmt, sm->pmk_len);
+ hdrlen = sizeof(*reply) + mic_len + 2;
rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY,
NULL, hdrlen + wpa_ie_len,
&rlen, (void *) &reply);
os_free(rsn_ie_buf);
return -1;
}
- reply192 = (struct wpa_eapol_key_192 *) reply;
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);
+ key_info = ver | WPA_KEY_INFO_KEY_TYPE;
+ if (mic_len)
+ key_info |= WPA_KEY_INFO_MIC;
+ else
+ key_info |= WPA_KEY_INFO_ENCR_KEY_DATA;
+ WPA_PUT_BE16(reply->key_info, key_info);
if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN)
WPA_PUT_BE16(reply->key_length, 0);
else
wpa_hexdump(MSG_DEBUG, "WPA: Replay Counter", reply->replay_counter,
WPA_REPLAY_COUNTER_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);
- }
+ key_mic = (u8 *) (reply + 1);
+ WPA_PUT_BE16(key_mic + mic_len, wpa_ie_len); /* Key Data Length */
+ os_memcpy(key_mic + mic_len + 2, wpa_ie, wpa_ie_len); /* Key Data */
os_free(rsn_ie_buf);
os_memcpy(reply->key_nonce, nonce, WPA_NONCE_LEN);
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;
+ return wpa_eapol_key_send(sm, ptk, ver, dst, ETH_P_EAPOL, rbuf, rlen,
+ key_mic);
}
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 u8 *z = NULL;
+ size_t z_len = 0;
+
#ifdef CONFIG_IEEE80211R
if (wpa_key_mgmt_ft(sm->key_mgmt))
return wpa_derive_ptk_ft(sm, src_addr, key, ptk);
#endif /* CONFIG_IEEE80211R */
+#ifdef CONFIG_DPP2
+ if (sm->key_mgmt == WPA_KEY_MGMT_DPP && sm->dpp_z) {
+ z = wpabuf_head(sm->dpp_z);
+ z_len = wpabuf_len(sm->dpp_z);
+ }
+#endif /* CONFIG_DPP2 */
+
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);
+ sm->pairwise_cipher, z, z_len);
}
/* Calculate PTK which will be stored as a temporary PTK until it has
* been verified when processing message 3/4. */
ptk = &sm->tptk;
- wpa_derive_ptk(sm, src_addr, key, ptk);
+ if (wpa_derive_ptk(sm, src_addr, key, ptk) < 0)
+ goto failed;
if (sm->pairwise_cipher == WPA_CIPHER_TKIP) {
u8 buf[8];
/* Supplicant: swap tx/rx Mic keys */
kde = sm->assoc_wpa_ie;
kde_len = sm->assoc_wpa_ie_len;
+#ifdef CONFIG_OCV
+ if (wpa_sm_ocv_enabled(sm)) {
+ struct wpa_channel_info ci;
+ u8 *pos;
+
+ if (wpa_sm_channel_info(sm, &ci) != 0) {
+ wpa_printf(MSG_WARNING,
+ "Failed to get channel info for OCI element in EAPOL-Key 2/4");
+ goto failed;
+ }
+
+ kde_buf = os_malloc(kde_len + 2 + RSN_SELECTOR_LEN + 3);
+ if (!kde_buf) {
+ wpa_printf(MSG_WARNING,
+ "Failed to allocate memory for KDE with OCI in EAPOL-Key 2/4");
+ goto failed;
+ }
+
+ os_memcpy(kde_buf, kde, kde_len);
+ kde = kde_buf;
+ pos = kde + kde_len;
+ if (ocv_insert_oci_kde(&ci, &pos) < 0)
+ goto failed;
+ kde_len = pos - kde;
+ }
+#endif /* CONFIG_OCV */
+
#ifdef CONFIG_P2P
if (sm->p2p) {
kde_buf = os_malloc(kde_len + 2 + RSN_SELECTOR_LEN + 1);
#endif /* CONFIG_P2P */
if (wpa_supplicant_send_2_of_4(sm, sm->bssid, key, ver, sm->snonce,
- kde, kde_len, ptk))
+ kde, kde_len, ptk) < 0)
goto failed;
os_free(kde_buf);
sm, addr, MLME_SETPROTECTION_PROTECT_TYPE_RX_TX,
MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
eapol_sm_notify_portValid(sm->eapol, TRUE);
- if (wpa_key_mgmt_wpa_psk(sm->key_mgmt))
+ if (wpa_key_mgmt_wpa_psk(sm->key_mgmt) ||
+ sm->key_mgmt == WPA_KEY_MGMT_DPP ||
+ sm->key_mgmt == WPA_KEY_MGMT_OWE)
eapol_sm_notify_eap_success(sm->eapol, TRUE);
/*
* Start preauthentication after a short wait to avoid a
* 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 (!dl_list_empty(&sm->pmksa_candidates))
+ eloop_register_timeout(1, 0, wpa_sm_start_preauth,
+ sm, NULL);
}
if (sm->cur_pmksa && sm->cur_pmksa->opportunistic) {
int keylen, rsclen;
enum wpa_alg alg;
const u8 *key_rsc;
- u8 null_rsc[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+ if (sm->ptk.installed) {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: Do not re-install same PTK to the driver");
+ return 0;
+ }
wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
"WPA: Installing PTK to the driver");
alg = wpa_cipher_to_alg(sm->pairwise_cipher);
keylen = wpa_cipher_key_len(sm->pairwise_cipher);
+ if (keylen <= 0 || (unsigned int) keylen != sm->ptk.tk_len) {
+ wpa_printf(MSG_DEBUG, "WPA: TK length mismatch: %d != %lu",
+ keylen, (long unsigned int) sm->ptk.tk_len);
+ return -1;
+ }
rsclen = wpa_cipher_rsc_len(sm->pairwise_cipher);
if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) {
/* TK is not needed anymore in supplicant */
os_memset(sm->ptk.tk, 0, WPA_TK_MAX_LEN);
+ sm->ptk.tk_len = 0;
+ sm->ptk.installed = 1;
if (sm->wpa_ptk_rekey) {
eloop_cancel_timeout(wpa_sm_rekey_ptk, sm, NULL);
static int wpa_supplicant_install_gtk(struct wpa_sm *sm,
const struct wpa_gtk_data *gd,
- const u8 *key_rsc)
+ const u8 *key_rsc, int wnm_sleep)
{
const u8 *_gtk = gd->gtk;
u8 gtk_buf[32];
+ /* Detect possible key reinstallation */
+ if ((sm->gtk.gtk_len == (size_t) gd->gtk_len &&
+ os_memcmp(sm->gtk.gtk, gd->gtk, sm->gtk.gtk_len) == 0) ||
+ (sm->gtk_wnm_sleep.gtk_len == (size_t) gd->gtk_len &&
+ os_memcmp(sm->gtk_wnm_sleep.gtk, gd->gtk,
+ sm->gtk_wnm_sleep.gtk_len) == 0)) {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: Not reinstalling already in-use GTK to the driver (keyidx=%d tx=%d len=%d)",
+ gd->keyidx, gd->tx, gd->gtk_len);
+ return 0;
+ }
+
wpa_hexdump_key(MSG_DEBUG, "WPA: Group Key", gd->gtk, gd->gtk_len);
wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
"WPA: Installing GTK to the driver (keyidx=%d tx=%d len=%d)",
}
os_memset(gtk_buf, 0, sizeof(gtk_buf));
+ if (wnm_sleep) {
+ sm->gtk_wnm_sleep.gtk_len = gd->gtk_len;
+ os_memcpy(sm->gtk_wnm_sleep.gtk, gd->gtk,
+ sm->gtk_wnm_sleep.gtk_len);
+ } else {
+ sm->gtk.gtk_len = gd->gtk_len;
+ os_memcpy(sm->gtk.gtk, gd->gtk, sm->gtk.gtk_len);
+ }
+
return 0;
}
}
+static int wpa_supplicant_rsc_relaxation(const struct wpa_sm *sm,
+ const u8 *rsc)
+{
+ int rsclen;
+
+ if (!sm->wpa_rsc_relaxation)
+ return 0;
+
+ rsclen = wpa_cipher_rsc_len(sm->group_cipher);
+
+ /*
+ * Try to detect RSC (endian) corruption issue where the AP sends
+ * the RSC bytes in EAPOL-Key message in the wrong order, both if
+ * it's actually a 6-byte field (as it should be) and if it treats
+ * it as an 8-byte field.
+ * An AP model known to have this bug is the Sapido RB-1632.
+ */
+ if (rsclen == 6 && ((rsc[5] && !rsc[0]) || rsc[6] || rsc[7])) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "RSC %02x%02x%02x%02x%02x%02x%02x%02x is likely bogus, using 0",
+ rsc[0], rsc[1], rsc[2], rsc[3],
+ rsc[4], rsc[5], rsc[6], rsc[7]);
+
+ return 1;
+ }
+
+ return 0;
+}
+
+
static int wpa_supplicant_pairwise_gtk(struct wpa_sm *sm,
const struct wpa_eapol_key *key,
const u8 *gtk, size_t gtk_len,
int key_info)
{
struct wpa_gtk_data gd;
+ const u8 *key_rsc;
/*
* IEEE Std 802.11i-2004 - 8.5.2 EAPOL-Key frames - Figure 43x
os_memcpy(gd.gtk, gtk, gtk_len);
gd.gtk_len = gtk_len;
+ key_rsc = key->key_rsc;
+ if (wpa_supplicant_rsc_relaxation(sm, key->key_rsc))
+ key_rsc = null_rsc;
+
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_supplicant_install_gtk(sm, &gd, key_rsc, 0))) {
wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
"RSN: Failed to install GTK");
os_memset(&gd, 0, sizeof(gd));
}
os_memset(&gd, 0, sizeof(gd));
- wpa_supplicant_key_neg_complete(sm, sm->bssid,
- key_info & WPA_KEY_INFO_SECURE);
return 0;
}
+#ifdef CONFIG_IEEE80211W
+static int wpa_supplicant_install_igtk(struct wpa_sm *sm,
+ const struct wpa_igtk_kde *igtk,
+ int wnm_sleep)
+{
+ size_t len = wpa_cipher_key_len(sm->mgmt_group_cipher);
+ u16 keyidx = WPA_GET_LE16(igtk->keyid);
+
+ /* Detect possible key reinstallation */
+ if ((sm->igtk.igtk_len == len &&
+ os_memcmp(sm->igtk.igtk, igtk->igtk, sm->igtk.igtk_len) == 0) ||
+ (sm->igtk_wnm_sleep.igtk_len == len &&
+ os_memcmp(sm->igtk_wnm_sleep.igtk, igtk->igtk,
+ sm->igtk_wnm_sleep.igtk_len) == 0)) {
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: Not reinstalling already in-use IGTK to the driver (keyidx=%d)",
+ keyidx);
+ return 0;
+ }
+
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
+ "WPA: IGTK keyid %d pn " COMPACT_MACSTR,
+ keyidx, MAC2STR(igtk->pn));
+ wpa_hexdump_key(MSG_DEBUG, "WPA: IGTK", igtk->igtk, len);
+ if (keyidx > 4095) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Invalid IGTK KeyID %d", keyidx);
+ return -1;
+ }
+ 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, len) < 0) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Failed to configure IGTK to the driver");
+ return -1;
+ }
+
+ if (wnm_sleep) {
+ sm->igtk_wnm_sleep.igtk_len = len;
+ os_memcpy(sm->igtk_wnm_sleep.igtk, igtk->igtk,
+ sm->igtk_wnm_sleep.igtk_len);
+ } else {
+ sm->igtk.igtk_len = len;
+ os_memcpy(sm->igtk.igtk, igtk->igtk, sm->igtk.igtk_len);
+ }
+
+ return 0;
+}
+#endif /* CONFIG_IEEE80211W */
+
+
static int ieee80211w_set_keys(struct wpa_sm *sm,
struct wpa_eapol_ie_parse *ie)
{
if (ie->igtk) {
size_t len;
const struct wpa_igtk_kde *igtk;
- u16 keyidx;
+
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_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, len);
- if (keyidx > 4095) {
- wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
- "WPA: Invalid IGTK KeyID %d", keyidx);
- return -1;
- }
- 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, len) < 0) {
- wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
- "WPA: Failed to configure IGTK to the driver");
+ if (wpa_supplicant_install_igtk(sm, igtk, 0) < 0)
return -1;
- }
}
return 0;
if (sm->assoc_resp_ies) {
pos = sm->assoc_resp_ies;
end = pos + sm->assoc_resp_ies_len;
- while (pos + 2 < end) {
- if (pos + 2 + pos[1] > end)
+ while (end - pos > 2) {
+ if (2 + pos[1] > end - pos)
break;
switch (*pos) {
case WLAN_EID_MOBILITY_DOMAIN:
* @ver: Version bits from EAPOL-Key Key Info
* @key_info: Key Info
* @ptk: PTK to use for keyed hash and encryption
- * Returns: 0 on success, -1 on failure
+ * Returns: >= 0 on success, < 0 on failure
*/
int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst,
const struct wpa_eapol_key *key,
{
size_t mic_len, hdrlen, rlen;
struct wpa_eapol_key *reply;
- 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);
+ mic_len = wpa_mic_len(sm->key_mgmt, sm->pmk_len);
+ hdrlen = sizeof(*reply) + mic_len + 2;
rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY, NULL,
hdrlen, &rlen, (void *) &reply);
if (rbuf == NULL)
return -1;
- reply192 = (struct wpa_eapol_key_192 *) reply;
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;
+ key_info |= ver | WPA_KEY_INFO_KEY_TYPE;
+ if (mic_len)
+ key_info |= WPA_KEY_INFO_MIC;
+ else
+ key_info |= WPA_KEY_INFO_ENCR_KEY_DATA;
WPA_PUT_BE16(reply->key_info, key_info);
if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN)
WPA_PUT_BE16(reply->key_length, 0);
os_memcpy(reply->replay_counter, key->replay_counter,
WPA_REPLAY_COUNTER_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);
+ key_mic = (u8 *) (reply + 1);
+ WPA_PUT_BE16(key_mic + mic_len, 0);
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;
+ return wpa_eapol_key_send(sm, ptk, ver, dst, ETH_P_EAPOL, rbuf, rlen,
+ key_mic);
}
}
#endif /* CONFIG_P2P */
+#ifdef CONFIG_OCV
+ if (wpa_sm_ocv_enabled(sm)) {
+ struct wpa_channel_info ci;
+
+ if (wpa_sm_channel_info(sm, &ci) != 0) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "Failed to get channel info to validate received OCI in EAPOL-Key 3/4");
+ return;
+ }
+
+ if (ocv_verify_tx_params(ie.oci, ie.oci_len, &ci,
+ channel_width_to_int(ci.chanwidth),
+ ci.seg1_idx) != 0) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, "%s",
+ ocv_errorstr);
+ return;
+ }
+ }
+#endif /* CONFIG_OCV */
+
if (wpa_supplicant_send_4_of_4(sm, sm->bssid, key, ver, key_info,
- &sm->ptk)) {
+ &sm->ptk) < 0) {
goto failed;
}
wpa_sm_set_state(sm, WPA_GROUP_HANDSHAKE);
if (sm->group_cipher == WPA_CIPHER_GTK_NOT_USED) {
- wpa_supplicant_key_neg_complete(sm, sm->bssid,
- key_info & WPA_KEY_INFO_SECURE);
+ /* No GTK to be set to the driver */
+ } else if (!ie.gtk && sm->proto == WPA_PROTO_RSN) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "RSN: No GTK KDE included in EAPOL-Key msg 3/4");
+ goto failed;
} else if (ie.gtk &&
wpa_supplicant_pairwise_gtk(sm, key,
ie.gtk, ie.gtk_len, key_info) < 0) {
goto failed;
}
+ if (sm->group_cipher == WPA_CIPHER_GTK_NOT_USED || ie.gtk)
+ wpa_supplicant_key_neg_complete(sm, sm->bssid,
+ key_info & WPA_KEY_INFO_SECURE);
+
if (ie.gtk)
wpa_sm_set_rekey_offload(sm);
- if (sm->proto == WPA_PROTO_RSN && wpa_key_mgmt_suite_b(sm->key_mgmt)) {
+ /* Add PMKSA cache entry for Suite B AKMs here since PMKID can be
+ * calculated only after KCK has been derived. Though, do not replace an
+ * existing PMKSA entry after each 4-way handshake (i.e., new KCK/PMKID)
+ * to avoid unnecessary changes of PMKID while continuing to use the
+ * same PMK. */
+ if (sm->proto == WPA_PROTO_RSN && wpa_key_mgmt_suite_b(sm->key_mgmt) &&
+ !sm->cur_pmksa) {
struct rsn_pmksa_cache_entry *sa;
- sa = pmksa_cache_add(sm->pmksa, sm->pmk, sm->pmk_len,
+ sa = pmksa_cache_add(sm->pmksa, sm->pmk, sm->pmk_len, NULL,
sm->ptk.kck, sm->ptk.kck_len,
sm->bssid, sm->own_addr,
- sm->network_ctx, sm->key_mgmt);
+ sm->network_ctx, sm->key_mgmt, NULL);
if (!sm->cur_pmksa)
sm->cur_pmksa = sa;
}
int maxkeylen;
struct wpa_eapol_ie_parse ie;
- wpa_hexdump(MSG_DEBUG, "RSN: msg 1/2 key data", keydata, keydatalen);
+ wpa_hexdump_key(MSG_DEBUG, "RSN: msg 1/2 key data",
+ keydata, keydatalen);
if (wpa_supplicant_parse_ies(keydata, keydatalen, &ie) < 0)
return -1;
if (ie.gtk && !(key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) {
}
maxkeylen = gd->gtk_len = ie.gtk_len - 2;
+#ifdef CONFIG_OCV
+ if (wpa_sm_ocv_enabled(sm)) {
+ struct wpa_channel_info ci;
+
+ if (wpa_sm_channel_info(sm, &ci) != 0) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "Failed to get channel info to validate received OCI in EAPOL-Key group msg 1/2");
+ return -1;
+ }
+
+ if (ocv_verify_tx_params(ie.oci, ie.oci_len, &ci,
+ channel_width_to_int(ci.chanwidth),
+ ci.seg1_idx) != 0) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, "%s",
+ ocv_errorstr);
+ return -1;
+ }
+ }
+#endif /* CONFIG_OCV */
+
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)));
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 && 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,
return -1;
}
os_memset(ek, 0, sizeof(ek));
+#endif /* CONFIG_NO_RC4 */
} else if (ver == WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) {
if (maxkeylen % 8) {
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
{
size_t mic_len, hdrlen, rlen;
struct wpa_eapol_key *reply;
- struct wpa_eapol_key_192 *reply192;
u8 *rbuf, *key_mic;
+ size_t kde_len = 0;
+
+#ifdef CONFIG_OCV
+ if (wpa_sm_ocv_enabled(sm))
+ kde_len = OCV_OCI_KDE_LEN;
+#endif /* CONFIG_OCV */
- mic_len = wpa_mic_len(sm->key_mgmt);
- hdrlen = mic_len == 24 ? sizeof(*reply192) : sizeof(*reply);
+ mic_len = wpa_mic_len(sm->key_mgmt, sm->pmk_len);
+ hdrlen = sizeof(*reply) + mic_len + 2;
rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY, NULL,
- hdrlen, &rlen, (void *) &reply);
+ hdrlen + kde_len, &rlen, (void *) &reply);
if (rbuf == NULL)
return -1;
- reply192 = (struct wpa_eapol_key_192 *) reply;
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;
+ key_info |= ver | WPA_KEY_INFO_SECURE;
+ if (mic_len)
+ key_info |= WPA_KEY_INFO_MIC;
+ else
+ key_info |= WPA_KEY_INFO_ENCR_KEY_DATA;
WPA_PUT_BE16(reply->key_info, key_info);
if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN)
WPA_PUT_BE16(reply->key_length, 0);
os_memcpy(reply->replay_counter, key->replay_counter,
WPA_REPLAY_COUNTER_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);
+ key_mic = (u8 *) (reply + 1);
+ WPA_PUT_BE16(key_mic + mic_len, kde_len); /* Key Data Length */
- 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);
+#ifdef CONFIG_OCV
+ if (wpa_sm_ocv_enabled(sm)) {
+ struct wpa_channel_info ci;
+ u8 *pos;
- return 0;
+ if (wpa_sm_channel_info(sm, &ci) != 0) {
+ wpa_printf(MSG_WARNING,
+ "Failed to get channel info for OCI element in EAPOL-Key 2/2");
+ os_free(rbuf);
+ return -1;
+ }
+
+ pos = key_mic + mic_len + 2; /* Key Data */
+ if (ocv_insert_oci_kde(&ci, &pos) < 0) {
+ os_free(rbuf);
+ return -1;
+ }
+ }
+#endif /* CONFIG_OCV */
+
+ wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Sending EAPOL-Key 2/2");
+ return wpa_eapol_key_send(sm, &sm->ptk, ver, sm->bssid, ETH_P_EAPOL,
+ rbuf, rlen, key_mic);
}
u16 key_info;
int rekey, ret;
struct wpa_gtk_data gd;
+ const u8 *key_rsc;
- if (!sm->msg_3_of_4_ok) {
+ if (!sm->msg_3_of_4_ok && !wpa_fils_is_completed(sm)) {
wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
"WPA: Group Key Handshake started prior to completion of 4-way handshake");
goto failed;
if (ret)
goto failed;
- if (wpa_supplicant_install_gtk(sm, &gd, key->key_rsc) ||
- wpa_supplicant_send_2_of_2(sm, key, ver, key_info))
+ key_rsc = key->key_rsc;
+ if (wpa_supplicant_rsc_relaxation(sm, key->key_rsc))
+ key_rsc = null_rsc;
+
+ if (wpa_supplicant_install_gtk(sm, &gd, key_rsc, 0) ||
+ wpa_supplicant_send_2_of_2(sm, key, ver, key_info) < 0)
goto failed;
os_memset(&gd, 0, sizeof(gd));
static int wpa_supplicant_verify_eapol_key_mic(struct wpa_sm *sm,
- struct wpa_eapol_key_192 *key,
+ struct wpa_eapol_key *key,
u16 ver,
const u8 *buf, size_t len)
{
u8 mic[WPA_EAPOL_KEY_MIC_MAX_LEN];
int ok = 0;
- size_t mic_len = wpa_mic_len(sm->key_mgmt);
+ size_t mic_len = wpa_mic_len(sm->key_mgmt, sm->pmk_len);
- os_memcpy(mic, key->key_mic, mic_len);
+ os_memcpy(mic, key + 1, mic_len);
if (sm->tptk_set) {
- 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) {
+ os_memset(key + 1, 0, mic_len);
+ if (wpa_eapol_key_mic(sm->tptk.kck, sm->tptk.kck_len,
+ sm->key_mgmt,
+ ver, buf, len, (u8 *) (key + 1)) < 0 ||
+ os_memcmp_const(mic, key + 1, mic_len) != 0) {
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
"WPA: Invalid EAPOL-Key MIC "
"when using TPTK - ignoring TPTK");
+#ifdef TEST_FUZZ
+ wpa_printf(MSG_INFO,
+ "TEST: Ignore Key MIC failure for fuzz testing");
+ goto continue_fuzz;
+#endif /* TEST_FUZZ */
} else {
+#ifdef TEST_FUZZ
+ continue_fuzz:
+#endif /* TEST_FUZZ */
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));
+ /*
+ * This assures the same TPTK in sm->tptk can never be
+ * copied twice to sm->ptk as the new PTK. In
+ * combination with the installed flag in the wpa_ptk
+ * struct, this assures the same PTK is only installed
+ * once.
+ */
+ sm->renew_snonce = 1;
}
}
if (!ok && sm->ptk_set) {
- 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) {
+ os_memset(key + 1, 0, mic_len);
+ if (wpa_eapol_key_mic(sm->ptk.kck, sm->ptk.kck_len,
+ sm->key_mgmt,
+ ver, buf, len, (u8 *) (key + 1)) < 0 ||
+ os_memcmp_const(mic, key + 1, mic_len) != 0) {
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
"WPA: Invalid EAPOL-Key MIC - "
"dropping packet");
+#ifdef TEST_FUZZ
+ wpa_printf(MSG_INFO,
+ "TEST: Ignore Key MIC failure for fuzz testing");
+ goto continue_fuzz2;
+#endif /* TEST_FUZZ */
return -1;
}
+#ifdef TEST_FUZZ
+ continue_fuzz2:
+#endif /* TEST_FUZZ */
ok = 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,
+ size_t mic_len, u16 ver,
u8 *key_data, size_t *key_data_len)
{
wpa_hexdump(MSG_DEBUG, "RSN: encrypted key data",
/* 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 && 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];
+
+ wpa_printf(MSG_DEBUG, "WPA: Decrypt Key Data using RC4");
os_memcpy(ek, key->key_iv, 16);
os_memcpy(ek + 16, sm->ptk.kek, sm->ptk.kek_len);
if (rc4_skip(ek, 32, 256, key_data, *key_data_len)) {
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 ||
- sm->key_mgmt == WPA_KEY_MGMT_OSEN ||
- wpa_key_mgmt_suite_b(sm->key_mgmt)) {
+ wpa_use_aes_key_wrap(sm->key_mgmt)) {
u8 *buf;
+
+ wpa_printf(MSG_DEBUG,
+ "WPA: Decrypt Key Data using AES-UNWRAP (KEK length %u)",
+ (unsigned int) sm->ptk.kek_len);
if (*key_data_len < 8 || *key_data_len % 8) {
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
"WPA: Unsupported AES-WRAP len %u",
"WPA: No memory for AES-UNWRAP buffer");
return -1;
}
+#ifdef TEST_FUZZ
+ os_memset(buf, 0x11, *key_data_len);
+#endif /* TEST_FUZZ */
if (aes_unwrap(sm->ptk.kek, sm->ptk.kek_len, *key_data_len / 8,
key_data, buf)) {
- os_free(buf);
+#ifdef TEST_FUZZ
+ wpa_printf(MSG_INFO,
+ "TEST: Ignore AES unwrap failure for fuzz testing");
+ goto continue_fuzz;
+#endif /* TEST_FUZZ */
+ bin_clear_free(buf, *key_data_len);
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
"WPA: AES unwrap failed - "
"could not decrypt EAPOL-Key key data");
return -1;
}
+#ifdef TEST_FUZZ
+ continue_fuzz:
+#endif /* TEST_FUZZ */
os_memcpy(key_data, buf, *key_data_len);
- os_free(buf);
- WPA_PUT_BE16(key->key_data_length, *key_data_len);
+ bin_clear_free(buf, *key_data_len);
+ WPA_PUT_BE16(((u8 *) (key + 1)) + mic_len, *key_data_len);
} else {
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
"WPA: Unsupported key_info type %d", ver);
}
+#ifdef CONFIG_FILS
+static int wpa_supp_aead_decrypt(struct wpa_sm *sm, u8 *buf, size_t buf_len,
+ size_t *key_data_len)
+{
+ struct wpa_ptk *ptk;
+ struct ieee802_1x_hdr *hdr;
+ struct wpa_eapol_key *key;
+ u8 *pos, *tmp;
+ const u8 *aad[1];
+ size_t aad_len[1];
+
+ if (*key_data_len < AES_BLOCK_SIZE) {
+ wpa_printf(MSG_INFO, "No room for AES-SIV data in the frame");
+ return -1;
+ }
+
+ if (sm->tptk_set)
+ ptk = &sm->tptk;
+ else if (sm->ptk_set)
+ ptk = &sm->ptk;
+ else
+ return -1;
+
+ hdr = (struct ieee802_1x_hdr *) buf;
+ key = (struct wpa_eapol_key *) (hdr + 1);
+ pos = (u8 *) (key + 1);
+ pos += 2; /* Pointing at the Encrypted Key Data field */
+
+ tmp = os_malloc(*key_data_len);
+ if (!tmp)
+ return -1;
+
+ /* AES-SIV AAD from EAPOL protocol version field (inclusive) to
+ * to Key Data (exclusive). */
+ aad[0] = buf;
+ aad_len[0] = pos - buf;
+ if (aes_siv_decrypt(ptk->kek, ptk->kek_len, pos, *key_data_len,
+ 1, aad, aad_len, tmp) < 0) {
+ wpa_printf(MSG_INFO, "Invalid AES-SIV data in the frame");
+ bin_clear_free(tmp, *key_data_len);
+ return -1;
+ }
+
+ /* AEAD decryption and validation completed successfully */
+ (*key_data_len) -= AES_BLOCK_SIZE;
+ wpa_hexdump_key(MSG_DEBUG, "WPA: Decrypted Key Data",
+ tmp, *key_data_len);
+
+ /* Replace Key Data field with the decrypted version */
+ os_memcpy(pos, tmp, *key_data_len);
+ pos -= 2; /* Key Data Length field */
+ WPA_PUT_BE16(pos, *key_data_len);
+ bin_clear_free(tmp, *key_data_len);
+
+ if (sm->tptk_set) {
+ 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));
+ }
+
+ os_memcpy(sm->rx_replay_counter, key->replay_counter,
+ WPA_REPLAY_COUNTER_LEN);
+ sm->rx_replay_counter_set = 1;
+
+ return 0;
+}
+#endif /* CONFIG_FILS */
+
+
/**
* wpa_sm_rx_eapol - Process received WPA EAPOL frames
* @sm: Pointer to WPA state machine data from wpa_sm_init()
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 = NULL;
int ret = -1;
- struct wpa_peerkey *peerkey = NULL;
- u8 *key_data;
+ u8 *mic, *key_data;
size_t mic_len, keyhdrlen;
#ifdef CONFIG_IEEE80211R
sm->ft_completed = 0;
#endif /* CONFIG_IEEE80211R */
- mic_len = wpa_mic_len(sm->key_mgmt);
- keyhdrlen = mic_len == 24 ? sizeof(*key192) : sizeof(*key);
+ mic_len = wpa_mic_len(sm->key_mgmt, sm->pmk_len);
+ keyhdrlen = sizeof(*key) + mic_len + 2;
if (len < sizeof(*hdr) + keyhdrlen) {
wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG,
* 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);
+ tmp = os_memdup(buf, 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);
+ mic = (u8 *) (key + 1);
+ key_data = mic + mic_len + 2;
if (key->type != EAPOL_KEY_TYPE_WPA && key->type != EAPOL_KEY_TYPE_RSN)
{
goto out;
}
- 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);
+ key_data_len = WPA_GET_BE16(mic + mic_len);
+ wpa_eapol_key_dump(sm, key, key_data_len, mic, mic_len);
if (key_data_len > plen - keyhdrlen) {
wpa_msg(sm->ctx->msg_ctx, MSG_INFO, "WPA: Invalid EAPOL-Key "
ver != WPA_KEY_INFO_TYPE_AES_128_CMAC &&
#endif /* CONFIG_IEEE80211R || CONFIG_IEEE80211W */
ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES &&
- !wpa_key_mgmt_suite_b(sm->key_mgmt) &&
- sm->key_mgmt != WPA_KEY_MGMT_OSEN) {
+ !wpa_use_akm_defined(sm->key_mgmt)) {
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) &&
+ if (wpa_use_akm_defined(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)",
#ifdef CONFIG_IEEE80211R
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) {
+ if (ver != WPA_KEY_INFO_TYPE_AES_128_CMAC &&
+ !wpa_use_akm_defined(sm->key_mgmt)) {
wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
"FT: AP did not use AES-128-CMAC");
goto out;
#ifdef CONFIG_IEEE80211W
if (wpa_key_mgmt_sha256(sm->key_mgmt)) {
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_use_akm_defined(sm->key_mgmt)) {
wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
"WPA: AP did not use the "
"negotiated AES-128-CMAC");
} else
#endif /* CONFIG_IEEE80211W */
if (sm->pairwise_cipher == WPA_CIPHER_CCMP &&
- !wpa_key_mgmt_suite_b(sm->key_mgmt) &&
+ !wpa_use_akm_defined(sm->key_mgmt) &&
ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) {
wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
"WPA: CCMP is used, but EAPOL-Key "
} else
goto out;
} else if (sm->pairwise_cipher == WPA_CIPHER_GCMP &&
- !wpa_key_mgmt_suite_b(sm->key_mgmt) &&
+ !wpa_use_akm_defined(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 "
goto out;
}
-#ifdef CONFIG_PEERKEY
- for (peerkey = sm->peerkey; peerkey; peerkey = peerkey->next) {
- if (os_memcmp(peerkey->addr, src_addr, ETH_ALEN) == 0)
- break;
- }
-
- if (!(key_info & WPA_KEY_INFO_SMK_MESSAGE) && peerkey) {
- if (!peerkey->initiator && peerkey->replay_counter_set &&
- os_memcmp(key->replay_counter, peerkey->replay_counter,
- WPA_REPLAY_COUNTER_LEN) <= 0) {
- 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];
- os_memcpy(_tmp, key->replay_counter,
- 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_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_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 &&
+ if (sm->rx_replay_counter_set &&
os_memcmp(key->replay_counter, sm->rx_replay_counter,
WPA_REPLAY_COUNTER_LEN) <= 0) {
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
goto out;
}
- if (!(key_info & (WPA_KEY_INFO_ACK | WPA_KEY_INFO_SMK_MESSAGE))
-#ifdef CONFIG_PEERKEY
- && (peerkey == NULL || !peerkey->initiator)
-#endif /* CONFIG_PEERKEY */
- ) {
+ if (key_info & WPA_KEY_INFO_SMK_MESSAGE) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+ "WPA: Unsupported SMK bit in key_info");
+ goto out;
+ }
+
+ if (!(key_info & WPA_KEY_INFO_ACK)) {
wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
"WPA: No Ack bit in key_info");
goto out;
goto out;
}
- if ((key_info & WPA_KEY_INFO_MIC) && !peerkey &&
- wpa_supplicant_verify_eapol_key_mic(sm, key192, ver, tmp, data_len))
+ if ((key_info & WPA_KEY_INFO_MIC) &&
+ wpa_supplicant_verify_eapol_key_mic(sm, key, ver, tmp, data_len))
goto out;
-#ifdef CONFIG_PEERKEY
- if ((key_info & WPA_KEY_INFO_MIC) && peerkey &&
- peerkey_verify_eapol_key_mic(sm, peerkey, key192, ver, tmp,
- data_len))
- goto out;
-#endif /* CONFIG_PEERKEY */
+#ifdef CONFIG_FILS
+ if (!mic_len && (key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) {
+ if (wpa_supp_aead_decrypt(sm, tmp, data_len, &key_data_len))
+ goto out;
+ }
+#endif /* CONFIG_FILS */
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, key_data,
+ (key_info & WPA_KEY_INFO_ENCR_KEY_DATA) && mic_len) {
+ /*
+ * Only decrypt the Key Data field if the frame's authenticity
+ * was verified. When using AES-SIV (FILS), the MIC flag is not
+ * set, so this check should only be performed if mic_len != 0
+ * which is the case in this code branch.
+ */
+ if (!(key_info & WPA_KEY_INFO_MIC)) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "WPA: Ignore EAPOL-Key with encrypted but unauthenticated data");
+ goto out;
+ }
+ if (wpa_supplicant_decrypt_key_data(sm, key, mic_len,
+ ver, key_data,
&key_data_len))
goto out;
}
"non-zero key index");
goto out;
}
- if (peerkey) {
- /* PeerKey 4-Way Handshake */
- peerkey_rx_eapol_4way(sm, peerkey, key, key_info, ver,
- key_data, key_data_len);
- } else if (key_info & WPA_KEY_INFO_MIC) {
+ if (key_info & (WPA_KEY_INFO_MIC |
+ WPA_KEY_INFO_ENCR_KEY_DATA)) {
/* 3/4 4-Way Handshake */
wpa_supplicant_process_3_of_4(sm, key, ver, key_data,
key_data_len);
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, key_data_len, key_info,
- ver);
} else {
- if (key_info & WPA_KEY_INFO_MIC) {
+ if ((mic_len && (key_info & WPA_KEY_INFO_MIC)) ||
+ (!mic_len && (key_info & WPA_KEY_INFO_ENCR_KEY_DATA))) {
/* 1/2 Group Key Handshake */
wpa_supplicant_process_1_of_2(sm, src_addr, key,
key_data, key_data_len,
ver);
} else {
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
- "WPA: EAPOL-Key (Group) without Mic bit - "
+ "WPA: EAPOL-Key (Group) without Mic/Encr bit - "
"dropped");
}
}
}
if (deauth) {
+ sm->pmk_len = 0;
os_memset(sm->pmk, 0, sizeof(sm->pmk));
wpa_sm_deauthenticate(sm, WLAN_REASON_UNSPECIFIED);
}
os_free(sm->ap_rsn_ie);
wpa_sm_drop_sa(sm);
os_free(sm->ctx);
- peerkey_deinit(sm);
#ifdef CONFIG_IEEE80211R
os_free(sm->assoc_resp_ies);
#endif /* CONFIG_IEEE80211R */
+#ifdef CONFIG_TESTING_OPTIONS
+ wpabuf_free(sm->test_assoc_ie);
+#endif /* CONFIG_TESTING_OPTIONS */
+#ifdef CONFIG_FILS_SK_PFS
+ crypto_ecdh_deinit(sm->fils_ecdh);
+#endif /* CONFIG_FILS_SK_PFS */
+#ifdef CONFIG_FILS
+ wpabuf_free(sm->fils_ft_ies);
+#endif /* CONFIG_FILS */
+#ifdef CONFIG_OWE
+ crypto_ecdh_deinit(sm->owe_ecdh);
+#endif /* CONFIG_OWE */
+#ifdef CONFIG_DPP2
+ wpabuf_clear_free(sm->dpp_z);
+#endif /* CONFIG_DPP2 */
os_free(sm);
}
*/
void wpa_sm_notify_assoc(struct wpa_sm *sm, const u8 *bssid)
{
- int clear_ptk = 1;
+ int clear_keys = 1;
if (sm == NULL)
return;
/* Prepare for the next transition */
wpa_ft_prepare_auth_request(sm, NULL);
- clear_ptk = 0;
+ clear_keys = 0;
}
#endif /* CONFIG_IEEE80211R */
+#ifdef CONFIG_FILS
+ if (sm->fils_completed) {
+ /*
+ * Clear portValid to kick EAPOL state machine to re-enter
+ * AUTHENTICATED state to get the EAPOL port Authorized.
+ */
+ wpa_supplicant_key_neg_complete(sm, sm->bssid, 1);
+ clear_keys = 0;
+ }
+#endif /* CONFIG_FILS */
- if (clear_ptk) {
+ if (clear_keys) {
/*
* IEEE 802.11, 8.4.10: Delete PTK SA on (re)association if
* this is not part of a Fast BSS Transition.
os_memset(&sm->ptk, 0, sizeof(sm->ptk));
sm->tptk_set = 0;
os_memset(&sm->tptk, 0, sizeof(sm->tptk));
+ os_memset(&sm->gtk, 0, sizeof(sm->gtk));
+ os_memset(&sm->gtk_wnm_sleep, 0, sizeof(sm->gtk_wnm_sleep));
+#ifdef CONFIG_IEEE80211W
+ os_memset(&sm->igtk, 0, sizeof(sm->igtk));
+ os_memset(&sm->igtk_wnm_sleep, 0, sizeof(sm->igtk_wnm_sleep));
+#endif /* CONFIG_IEEE80211W */
}
#ifdef CONFIG_TDLS
{
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)
#ifdef CONFIG_TDLS
wpa_tdls_disassoc(sm);
#endif /* CONFIG_TDLS */
+#ifdef CONFIG_FILS
+ sm->fils_completed = 0;
+#endif /* CONFIG_FILS */
+#ifdef CONFIG_IEEE80211R
+ sm->ft_reassoc_completed = 0;
+#endif /* CONFIG_IEEE80211R */
/* Keys are not needed in the WPA state machine anymore */
wpa_sm_drop_sa(sm);
sm->msg_3_of_4_ok = 0;
+ os_memset(sm->bssid, 0, ETH_ALEN);
}
* @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
+ * @pmkid: Calculated PMKID
* @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,
- const u8 *bssid)
+ const u8 *pmkid, const u8 *bssid)
{
if (sm == NULL)
return;
+ wpa_hexdump_key(MSG_DEBUG, "WPA: Set PMK based on external data",
+ pmk, pmk_len);
sm->pmk_len = pmk_len;
os_memcpy(sm->pmk, pmk, pmk_len);
#endif /* CONFIG_IEEE80211R */
if (bssid) {
- pmksa_cache_add(sm->pmksa, pmk, pmk_len, NULL, 0,
+ pmksa_cache_add(sm->pmksa, pmk, pmk_len, pmkid, NULL, 0,
bssid, sm->own_addr,
- sm->network_ctx, sm->key_mgmt);
+ sm->network_ctx, sm->key_mgmt, NULL);
}
}
return;
if (sm->cur_pmksa) {
+ wpa_hexdump_key(MSG_DEBUG,
+ "WPA: Set PMK based on current PMKSA",
+ sm->cur_pmksa->pmk, sm->cur_pmksa->pmk_len);
sm->pmk_len = sm->cur_pmksa->pmk_len;
os_memcpy(sm->pmk, sm->cur_pmksa->pmk, sm->pmk_len);
} else {
- sm->pmk_len = PMK_LEN;
- os_memset(sm->pmk, 0, PMK_LEN);
+ wpa_printf(MSG_DEBUG, "WPA: No current PMKSA - clear PMK");
+ sm->pmk_len = 0;
+ os_memset(sm->pmk, 0, PMK_LEN_MAX);
}
}
if (config) {
sm->network_ctx = config->network_ctx;
- sm->peerkey_enabled = config->peerkey_enabled;
sm->allowed_pairwise_cipher = config->allowed_pairwise_cipher;
sm->proactive_key_caching = config->proactive_key_caching;
sm->eap_workaround = config->eap_workaround;
sm->ssid_len = 0;
sm->wpa_ptk_rekey = config->wpa_ptk_rekey;
sm->p2p = config->p2p;
+ sm->wpa_rsc_relaxation = config->wpa_rsc_relaxation;
+#ifdef CONFIG_FILS
+ if (config->fils_cache_id) {
+ sm->fils_cache_id_set = 1;
+ os_memcpy(sm->fils_cache_id, config->fils_cache_id,
+ FILS_CACHE_ID_LEN);
+ } else {
+ sm->fils_cache_id_set = 0;
+ }
+#endif /* CONFIG_FILS */
} else {
sm->network_ctx = NULL;
- sm->peerkey_enabled = 0;
sm->allowed_pairwise_cipher = 0;
sm->proactive_key_caching = 0;
sm->eap_workaround = 0;
sm->ssid_len = 0;
sm->wpa_ptk_rekey = 0;
sm->p2p = 0;
+ sm->wpa_rsc_relaxation = 0;
}
}
case WPA_PARAM_MFP:
sm->mfp = value;
break;
+ case WPA_PARAM_OCV:
+ sm->ocv = value;
+ break;
default:
break;
}
>= 0 &&
rsn.capabilities & (WPA_CAPABILITY_MFPR |
WPA_CAPABILITY_MFPC)) {
- ret = os_snprintf(pos, end - pos, "pmf=%d\n",
+ ret = os_snprintf(pos, end - pos, "pmf=%d\n"
+ "mgmt_group_cipher=%s\n",
(rsn.capabilities &
- WPA_CAPABILITY_MFPR) ? 2 : 1);
+ WPA_CAPABILITY_MFPR) ? 2 : 1,
+ wpa_cipher_txt(
+ sm->mgmt_group_cipher));
if (os_snprintf_error(end - pos, ret))
return pos - buf;
pos += ret;
}
-/**
+int wpa_sm_ocv_enabled(struct wpa_sm *sm)
+{
+ struct wpa_ie_data rsn;
+
+ if (!sm->ocv || !sm->ap_rsn_ie)
+ return 0;
+
+ return wpa_parse_wpa_ie_rsn(sm->ap_rsn_ie, sm->ap_rsn_ie_len,
+ &rsn) >= 0 &&
+ (rsn.capabilities & WPA_CAPABILITY_OCVC);
+}
+
+
+/**
* 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()
* @wpa_ie: Pointer to buffer for WPA/RSN IE
if (sm == NULL)
return -1;
+#ifdef CONFIG_TESTING_OPTIONS
+ if (sm->test_assoc_ie) {
+ wpa_printf(MSG_DEBUG,
+ "TESTING: Replace association WPA/RSN IE");
+ if (*wpa_ie_len < wpabuf_len(sm->test_assoc_ie))
+ return -1;
+ os_memcpy(wpa_ie, wpabuf_head(sm->test_assoc_ie),
+ wpabuf_len(sm->test_assoc_ie));
+ res = wpabuf_len(sm->test_assoc_ie);
+ } else
+#endif /* CONFIG_TESTING_OPTIONS */
res = wpa_gen_wpa_ie(sm, wpa_ie, *wpa_ie_len);
if (res < 0)
return -1;
* the correct version of the IE even if PMKSA caching is
* aborted (which would remove PMKID from IE generation).
*/
- sm->assoc_wpa_ie = os_malloc(*wpa_ie_len);
+ sm->assoc_wpa_ie = os_memdup(wpa_ie, *wpa_ie_len);
if (sm->assoc_wpa_ie == NULL)
return -1;
- os_memcpy(sm->assoc_wpa_ie, wpa_ie, *wpa_ie_len);
sm->assoc_wpa_ie_len = *wpa_ie_len;
+ } else {
+ wpa_hexdump(MSG_DEBUG,
+ "WPA: Leave previously set WPA IE default",
+ sm->assoc_wpa_ie, sm->assoc_wpa_ie_len);
}
return 0;
sm->assoc_wpa_ie_len = 0;
} else {
wpa_hexdump(MSG_DEBUG, "WPA: set own WPA/RSN IE", ie, len);
- sm->assoc_wpa_ie = os_malloc(len);
+ sm->assoc_wpa_ie = os_memdup(ie, len);
if (sm->assoc_wpa_ie == NULL)
return -1;
- os_memcpy(sm->assoc_wpa_ie, ie, len);
sm->assoc_wpa_ie_len = len;
}
sm->ap_wpa_ie_len = 0;
} else {
wpa_hexdump(MSG_DEBUG, "WPA: set AP WPA IE", ie, len);
- sm->ap_wpa_ie = os_malloc(len);
+ sm->ap_wpa_ie = os_memdup(ie, len);
if (sm->ap_wpa_ie == NULL)
return -1;
- os_memcpy(sm->ap_wpa_ie, ie, len);
sm->ap_wpa_ie_len = len;
}
sm->ap_rsn_ie_len = 0;
} else {
wpa_hexdump(MSG_DEBUG, "WPA: set AP RSN IE", ie, len);
- sm->ap_rsn_ie = os_malloc(len);
+ sm->ap_rsn_ie = os_memdup(ie, len);
if (sm->ap_rsn_ie == NULL)
return -1;
- os_memcpy(sm->ap_rsn_ie, ie, len);
sm->ap_rsn_ie_len = len;
}
}
+struct rsn_pmksa_cache_entry * wpa_sm_pmksa_cache_head(struct wpa_sm *sm)
+{
+ return pmksa_cache_head(sm->pmksa);
+}
+
+
+struct rsn_pmksa_cache_entry *
+wpa_sm_pmksa_cache_add_entry(struct wpa_sm *sm,
+ struct rsn_pmksa_cache_entry * entry)
+{
+ return pmksa_cache_add_entry(sm->pmksa, entry);
+}
+
+
+void wpa_sm_pmksa_cache_add(struct wpa_sm *sm, const u8 *pmk, size_t pmk_len,
+ const u8 *pmkid, const u8 *bssid,
+ const u8 *fils_cache_id)
+{
+ sm->cur_pmksa = pmksa_cache_add(sm->pmksa, pmk, pmk_len, pmkid, NULL, 0,
+ bssid, sm->own_addr, sm->network_ctx,
+ sm->key_mgmt, fils_cache_id);
+}
+
+
+int wpa_sm_pmksa_exists(struct wpa_sm *sm, const u8 *bssid,
+ const void *network_ctx)
+{
+ return pmksa_cache_get(sm->pmksa, bssid, NULL, network_ctx, 0) != NULL;
+}
+
+
void wpa_sm_drop_sa(struct wpa_sm *sm)
{
wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Clear old PMK and PTK");
sm->ptk_set = 0;
sm->tptk_set = 0;
+ sm->pmk_len = 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));
+ os_memset(&sm->gtk, 0, sizeof(sm->gtk));
+ os_memset(&sm->gtk_wnm_sleep, 0, sizeof(sm->gtk_wnm_sleep));
+#ifdef CONFIG_IEEE80211W
+ os_memset(&sm->igtk, 0, sizeof(sm->igtk));
+ os_memset(&sm->igtk_wnm_sleep, 0, sizeof(sm->igtk_wnm_sleep));
+#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_IEEE80211R
os_memset(sm->xxkey, 0, sizeof(sm->xxkey));
+ sm->xxkey_len = 0;
os_memset(sm->pmk_r0, 0, sizeof(sm->pmk_r0));
+ sm->pmk_r0_len = 0;
os_memset(sm->pmk_r1, 0, sizeof(sm->pmk_r1));
+ sm->pmk_r1_len = 0;
#endif /* CONFIG_IEEE80211R */
}
wpa_hexdump_key(MSG_DEBUG, "Install GTK (WNM SLEEP)",
gd.gtk, gd.gtk_len);
- if (wpa_supplicant_install_gtk(sm, &gd, key_rsc)) {
+ if (wpa_supplicant_install_gtk(sm, &gd, key_rsc, 1)) {
os_memset(&gd, 0, sizeof(gd));
wpa_printf(MSG_DEBUG, "Failed to install the GTK in "
"WNM mode");
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));
+ const struct wpa_igtk_kde *igtk;
+
+ igtk = (const struct wpa_igtk_kde *) (buf + 2);
+ if (wpa_supplicant_install_igtk(sm, igtk, 1) < 0)
return -1;
- }
- os_memset(&igd, 0, sizeof(igd));
#endif /* CONFIG_IEEE80211W */
} else {
wpa_printf(MSG_DEBUG, "Unknown element id");
#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)
}
sm->ptk_set = 1;
}
+
+
+#ifdef CONFIG_TESTING_OPTIONS
+
+void wpa_sm_set_test_assoc_ie(struct wpa_sm *sm, struct wpabuf *buf)
+{
+ wpabuf_free(sm->test_assoc_ie);
+ sm->test_assoc_ie = buf;
+}
+
+
+const u8 * wpa_sm_get_anonce(struct wpa_sm *sm)
+{
+ return sm->anonce;
+}
+
+#endif /* CONFIG_TESTING_OPTIONS */
+
+
+unsigned int wpa_sm_get_key_mgmt(struct wpa_sm *sm)
+{
+ return sm->key_mgmt;
+}
+
+
+#ifdef CONFIG_FILS
+
+struct wpabuf * fils_build_auth(struct wpa_sm *sm, int dh_group, const u8 *md)
+{
+ struct wpabuf *buf = NULL;
+ struct wpabuf *erp_msg;
+ struct wpabuf *pub = NULL;
+
+ erp_msg = eapol_sm_build_erp_reauth_start(sm->eapol);
+ if (!erp_msg && !sm->cur_pmksa) {
+ wpa_printf(MSG_DEBUG,
+ "FILS: Neither ERP EAP-Initiate/Re-auth nor PMKSA cache entry is available - skip FILS");
+ goto fail;
+ }
+
+ wpa_printf(MSG_DEBUG, "FILS: Try to use FILS (erp=%d pmksa_cache=%d)",
+ erp_msg != NULL, sm->cur_pmksa != NULL);
+
+ sm->fils_completed = 0;
+
+ if (!sm->assoc_wpa_ie) {
+ wpa_printf(MSG_INFO, "FILS: No own RSN IE set for FILS");
+ goto fail;
+ }
+
+ if (random_get_bytes(sm->fils_nonce, FILS_NONCE_LEN) < 0 ||
+ random_get_bytes(sm->fils_session, FILS_SESSION_LEN) < 0)
+ goto fail;
+
+ wpa_hexdump(MSG_DEBUG, "FILS: Generated FILS Nonce",
+ sm->fils_nonce, FILS_NONCE_LEN);
+ wpa_hexdump(MSG_DEBUG, "FILS: Generated FILS Session",
+ sm->fils_session, FILS_SESSION_LEN);
+
+#ifdef CONFIG_FILS_SK_PFS
+ sm->fils_dh_group = dh_group;
+ if (dh_group) {
+ crypto_ecdh_deinit(sm->fils_ecdh);
+ sm->fils_ecdh = crypto_ecdh_init(dh_group);
+ if (!sm->fils_ecdh) {
+ wpa_printf(MSG_INFO,
+ "FILS: Could not initialize ECDH with group %d",
+ dh_group);
+ goto fail;
+ }
+ pub = crypto_ecdh_get_pubkey(sm->fils_ecdh, 1);
+ if (!pub)
+ goto fail;
+ wpa_hexdump_buf(MSG_DEBUG, "FILS: Element (DH public key)",
+ pub);
+ sm->fils_dh_elem_len = wpabuf_len(pub);
+ }
+#endif /* CONFIG_FILS_SK_PFS */
+
+ buf = wpabuf_alloc(1000 + sm->assoc_wpa_ie_len +
+ (pub ? wpabuf_len(pub) : 0));
+ if (!buf)
+ goto fail;
+
+ /* Fields following the Authentication algorithm number field */
+
+ /* Authentication Transaction seq# */
+ wpabuf_put_le16(buf, 1);
+
+ /* Status Code */
+ wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
+
+ /* TODO: FILS PK */
+#ifdef CONFIG_FILS_SK_PFS
+ if (dh_group) {
+ /* Finite Cyclic Group */
+ wpabuf_put_le16(buf, dh_group);
+ /* Element */
+ wpabuf_put_buf(buf, pub);
+ }
+#endif /* CONFIG_FILS_SK_PFS */
+
+ /* RSNE */
+ wpa_hexdump(MSG_DEBUG, "FILS: RSNE in FILS Authentication frame",
+ sm->assoc_wpa_ie, sm->assoc_wpa_ie_len);
+ wpabuf_put_data(buf, sm->assoc_wpa_ie, sm->assoc_wpa_ie_len);
+
+ if (md) {
+ /* MDE when using FILS for FT initial association */
+ struct rsn_mdie *mdie;
+
+ wpabuf_put_u8(buf, WLAN_EID_MOBILITY_DOMAIN);
+ wpabuf_put_u8(buf, sizeof(*mdie));
+ mdie = wpabuf_put(buf, sizeof(*mdie));
+ os_memcpy(mdie->mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
+ mdie->ft_capab = 0;
+ }
+
+ /* FILS Nonce */
+ wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */
+ wpabuf_put_u8(buf, 1 + FILS_NONCE_LEN); /* Length */
+ /* Element ID Extension */
+ wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_NONCE);
+ wpabuf_put_data(buf, sm->fils_nonce, FILS_NONCE_LEN);
+
+ /* FILS Session */
+ wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */
+ wpabuf_put_u8(buf, 1 + FILS_SESSION_LEN); /* Length */
+ /* Element ID Extension */
+ wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_SESSION);
+ wpabuf_put_data(buf, sm->fils_session, FILS_SESSION_LEN);
+
+ /* FILS Wrapped Data */
+ sm->fils_erp_pmkid_set = 0;
+ if (erp_msg) {
+ wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */
+ wpabuf_put_u8(buf, 1 + wpabuf_len(erp_msg)); /* Length */
+ /* Element ID Extension */
+ wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_WRAPPED_DATA);
+ wpabuf_put_buf(buf, erp_msg);
+ /* Calculate pending PMKID here so that we do not need to
+ * maintain a copy of the EAP-Initiate/Reauth message. */
+ if (fils_pmkid_erp(sm->key_mgmt, wpabuf_head(erp_msg),
+ wpabuf_len(erp_msg),
+ sm->fils_erp_pmkid) == 0)
+ sm->fils_erp_pmkid_set = 1;
+ }
+
+ wpa_hexdump_buf(MSG_DEBUG, "RSN: FILS fields for Authentication frame",
+ buf);
+
+fail:
+ wpabuf_free(erp_msg);
+ wpabuf_free(pub);
+ return buf;
+}
+
+
+int fils_process_auth(struct wpa_sm *sm, const u8 *bssid, const u8 *data,
+ size_t len)
+{
+ const u8 *pos, *end;
+ struct ieee802_11_elems elems;
+ struct wpa_ie_data rsn;
+ int pmkid_match = 0;
+ u8 ick[FILS_ICK_MAX_LEN];
+ size_t ick_len;
+ int res;
+ struct wpabuf *dh_ss = NULL;
+ const u8 *g_sta = NULL;
+ size_t g_sta_len = 0;
+ const u8 *g_ap = NULL;
+ size_t g_ap_len = 0;
+ struct wpabuf *pub = NULL;
+
+ os_memcpy(sm->bssid, bssid, ETH_ALEN);
+
+ wpa_hexdump(MSG_DEBUG, "FILS: Authentication frame fields",
+ data, len);
+ pos = data;
+ end = data + len;
+
+ /* TODO: FILS PK */
+#ifdef CONFIG_FILS_SK_PFS
+ if (sm->fils_dh_group) {
+ u16 group;
+
+ /* Using FILS PFS */
+
+ /* Finite Cyclic Group */
+ if (end - pos < 2) {
+ wpa_printf(MSG_DEBUG,
+ "FILS: No room for Finite Cyclic Group");
+ goto fail;
+ }
+ group = WPA_GET_LE16(pos);
+ pos += 2;
+ if (group != sm->fils_dh_group) {
+ wpa_printf(MSG_DEBUG,
+ "FILS: Unexpected change in Finite Cyclic Group: %u (expected %u)",
+ group, sm->fils_dh_group);
+ goto fail;
+ }
+
+ /* Element */
+ if ((size_t) (end - pos) < sm->fils_dh_elem_len) {
+ wpa_printf(MSG_DEBUG, "FILS: No room for Element");
+ goto fail;
+ }
+
+ if (!sm->fils_ecdh) {
+ wpa_printf(MSG_DEBUG, "FILS: No ECDH state available");
+ goto fail;
+ }
+ dh_ss = crypto_ecdh_set_peerkey(sm->fils_ecdh, 1, pos,
+ sm->fils_dh_elem_len);
+ if (!dh_ss) {
+ wpa_printf(MSG_DEBUG, "FILS: ECDH operation failed");
+ goto fail;
+ }
+ wpa_hexdump_buf_key(MSG_DEBUG, "FILS: DH_SS", dh_ss);
+ g_ap = pos;
+ g_ap_len = sm->fils_dh_elem_len;
+ pos += sm->fils_dh_elem_len;
+ }
+#endif /* CONFIG_FILS_SK_PFS */
+
+ wpa_hexdump(MSG_DEBUG, "FILS: Remaining IEs", pos, end - pos);
+ if (ieee802_11_parse_elems(pos, end - pos, &elems, 1) == ParseFailed) {
+ wpa_printf(MSG_DEBUG, "FILS: Could not parse elements");
+ goto fail;
+ }
+
+ /* RSNE */
+ wpa_hexdump(MSG_DEBUG, "FILS: RSN element", elems.rsn_ie,
+ elems.rsn_ie_len);
+ if (!elems.rsn_ie ||
+ wpa_parse_wpa_ie_rsn(elems.rsn_ie - 2, elems.rsn_ie_len + 2,
+ &rsn) < 0) {
+ wpa_printf(MSG_DEBUG, "FILS: No RSN element");
+ goto fail;
+ }
+
+ if (!elems.fils_nonce) {
+ wpa_printf(MSG_DEBUG, "FILS: No FILS Nonce field");
+ goto fail;
+ }
+ os_memcpy(sm->fils_anonce, elems.fils_nonce, FILS_NONCE_LEN);
+ wpa_hexdump(MSG_DEBUG, "FILS: ANonce", sm->fils_anonce, FILS_NONCE_LEN);
+
+#ifdef CONFIG_IEEE80211R
+ if (wpa_key_mgmt_ft(sm->key_mgmt)) {
+ struct wpa_ft_ies parse;
+
+ if (!elems.mdie || !elems.ftie) {
+ wpa_printf(MSG_DEBUG, "FILS+FT: No MDE or FTE");
+ goto fail;
+ }
+
+ if (wpa_ft_parse_ies(pos, end - pos, &parse,
+ wpa_key_mgmt_sha384(sm->key_mgmt)) < 0) {
+ wpa_printf(MSG_DEBUG, "FILS+FT: Failed to parse IEs");
+ goto fail;
+ }
+
+ if (!parse.r0kh_id) {
+ wpa_printf(MSG_DEBUG,
+ "FILS+FT: No R0KH-ID subelem in FTE");
+ goto fail;
+ }
+ os_memcpy(sm->r0kh_id, parse.r0kh_id, parse.r0kh_id_len);
+ sm->r0kh_id_len = parse.r0kh_id_len;
+ wpa_hexdump_ascii(MSG_DEBUG, "FILS+FT: R0KH-ID",
+ sm->r0kh_id, sm->r0kh_id_len);
+
+ if (!parse.r1kh_id) {
+ wpa_printf(MSG_DEBUG,
+ "FILS+FT: No R1KH-ID subelem in FTE");
+ goto fail;
+ }
+ os_memcpy(sm->r1kh_id, parse.r1kh_id, FT_R1KH_ID_LEN);
+ wpa_hexdump(MSG_DEBUG, "FILS+FT: R1KH-ID",
+ sm->r1kh_id, FT_R1KH_ID_LEN);
+
+ /* TODO: Check MDE and FTE payload */
+
+ wpabuf_free(sm->fils_ft_ies);
+ sm->fils_ft_ies = wpabuf_alloc(2 + elems.mdie_len +
+ 2 + elems.ftie_len);
+ if (!sm->fils_ft_ies)
+ goto fail;
+ wpabuf_put_data(sm->fils_ft_ies, elems.mdie - 2,
+ 2 + elems.mdie_len);
+ wpabuf_put_data(sm->fils_ft_ies, elems.ftie - 2,
+ 2 + elems.ftie_len);
+ } else {
+ wpabuf_free(sm->fils_ft_ies);
+ sm->fils_ft_ies = NULL;
+ }
+#endif /* CONFIG_IEEE80211R */
+
+ /* PMKID List */
+ if (rsn.pmkid && rsn.num_pmkid > 0) {
+ wpa_hexdump(MSG_DEBUG, "FILS: PMKID List",
+ rsn.pmkid, rsn.num_pmkid * PMKID_LEN);
+
+ if (rsn.num_pmkid != 1) {
+ wpa_printf(MSG_DEBUG, "FILS: Invalid PMKID selection");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "FILS: PMKID", rsn.pmkid, PMKID_LEN);
+ if (os_memcmp(sm->cur_pmksa->pmkid, rsn.pmkid, PMKID_LEN) != 0)
+ {
+ wpa_printf(MSG_DEBUG, "FILS: PMKID mismatch");
+ wpa_hexdump(MSG_DEBUG, "FILS: Expected PMKID",
+ sm->cur_pmksa->pmkid, PMKID_LEN);
+ goto fail;
+ }
+ wpa_printf(MSG_DEBUG,
+ "FILS: Matching PMKID - continue using PMKSA caching");
+ pmkid_match = 1;
+ }
+ if (!pmkid_match && sm->cur_pmksa) {
+ wpa_printf(MSG_DEBUG,
+ "FILS: No PMKID match - cannot use cached PMKSA entry");
+ sm->cur_pmksa = NULL;
+ }
+
+ /* FILS Session */
+ if (!elems.fils_session) {
+ wpa_printf(MSG_DEBUG, "FILS: No FILS Session element");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "FILS: FILS Session", elems.fils_session,
+ FILS_SESSION_LEN);
+ if (os_memcmp(sm->fils_session, elems.fils_session, FILS_SESSION_LEN)
+ != 0) {
+ wpa_printf(MSG_DEBUG, "FILS: Session mismatch");
+ wpa_hexdump(MSG_DEBUG, "FILS: Expected FILS Session",
+ sm->fils_session, FILS_SESSION_LEN);
+ goto fail;
+ }
+
+ /* FILS Wrapped Data */
+ if (!sm->cur_pmksa && elems.fils_wrapped_data) {
+ u8 rmsk[ERP_MAX_KEY_LEN];
+ size_t rmsk_len;
+
+ wpa_hexdump(MSG_DEBUG, "FILS: Wrapped Data",
+ elems.fils_wrapped_data,
+ elems.fils_wrapped_data_len);
+ eapol_sm_process_erp_finish(sm->eapol, elems.fils_wrapped_data,
+ elems.fils_wrapped_data_len);
+ if (eapol_sm_failed(sm->eapol))
+ goto fail;
+
+ rmsk_len = ERP_MAX_KEY_LEN;
+ res = eapol_sm_get_key(sm->eapol, rmsk, rmsk_len);
+ if (res == PMK_LEN) {
+ rmsk_len = PMK_LEN;
+ res = eapol_sm_get_key(sm->eapol, rmsk, rmsk_len);
+ }
+ if (res)
+ goto fail;
+
+ res = fils_rmsk_to_pmk(sm->key_mgmt, rmsk, rmsk_len,
+ sm->fils_nonce, sm->fils_anonce,
+ dh_ss ? wpabuf_head(dh_ss) : NULL,
+ dh_ss ? wpabuf_len(dh_ss) : 0,
+ sm->pmk, &sm->pmk_len);
+ os_memset(rmsk, 0, sizeof(rmsk));
+
+ /* Don't use DHss in PTK derivation if PMKSA caching is not
+ * used. */
+ wpabuf_clear_free(dh_ss);
+ dh_ss = NULL;
+
+ if (res)
+ goto fail;
+
+ if (!sm->fils_erp_pmkid_set) {
+ wpa_printf(MSG_DEBUG, "FILS: PMKID not available");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "FILS: PMKID", sm->fils_erp_pmkid,
+ PMKID_LEN);
+ wpa_printf(MSG_DEBUG, "FILS: ERP processing succeeded - add PMKSA cache entry for the result");
+ sm->cur_pmksa = pmksa_cache_add(sm->pmksa, sm->pmk, sm->pmk_len,
+ sm->fils_erp_pmkid, NULL, 0,
+ sm->bssid, sm->own_addr,
+ sm->network_ctx, sm->key_mgmt,
+ NULL);
+ }
+
+ if (!sm->cur_pmksa) {
+ wpa_printf(MSG_DEBUG,
+ "FILS: No remaining options to continue FILS authentication");
+ goto fail;
+ }
+
+ if (fils_pmk_to_ptk(sm->pmk, sm->pmk_len, sm->own_addr, sm->bssid,
+ sm->fils_nonce, sm->fils_anonce,
+ dh_ss ? wpabuf_head(dh_ss) : NULL,
+ dh_ss ? wpabuf_len(dh_ss) : 0,
+ &sm->ptk, ick, &ick_len,
+ sm->key_mgmt, sm->pairwise_cipher,
+ sm->fils_ft, &sm->fils_ft_len) < 0) {
+ wpa_printf(MSG_DEBUG, "FILS: Failed to derive PTK");
+ goto fail;
+ }
+
+ wpabuf_clear_free(dh_ss);
+ dh_ss = NULL;
+
+ sm->ptk_set = 1;
+ sm->tptk_set = 0;
+ os_memset(&sm->tptk, 0, sizeof(sm->tptk));
+
+#ifdef CONFIG_FILS_SK_PFS
+ if (sm->fils_dh_group) {
+ if (!sm->fils_ecdh) {
+ wpa_printf(MSG_INFO, "FILS: ECDH not initialized");
+ goto fail;
+ }
+ pub = crypto_ecdh_get_pubkey(sm->fils_ecdh, 1);
+ if (!pub)
+ goto fail;
+ wpa_hexdump_buf(MSG_DEBUG, "FILS: gSTA", pub);
+ g_sta = wpabuf_head(pub);
+ g_sta_len = wpabuf_len(pub);
+ if (!g_ap) {
+ wpa_printf(MSG_INFO, "FILS: gAP not available");
+ goto fail;
+ }
+ wpa_hexdump(MSG_DEBUG, "FILS: gAP", g_ap, g_ap_len);
+ }
+#endif /* CONFIG_FILS_SK_PFS */
+
+ res = fils_key_auth_sk(ick, ick_len, sm->fils_nonce,
+ sm->fils_anonce, sm->own_addr, sm->bssid,
+ g_sta, g_sta_len, g_ap, g_ap_len,
+ sm->key_mgmt, sm->fils_key_auth_sta,
+ sm->fils_key_auth_ap,
+ &sm->fils_key_auth_len);
+ wpabuf_free(pub);
+ os_memset(ick, 0, sizeof(ick));
+ return res;
+fail:
+ wpabuf_free(pub);
+ wpabuf_clear_free(dh_ss);
+ return -1;
+}
+
+
+#ifdef CONFIG_IEEE80211R
+static int fils_ft_build_assoc_req_rsne(struct wpa_sm *sm, struct wpabuf *buf)
+{
+ struct rsn_ie_hdr *rsnie;
+ u16 capab;
+ u8 *pos;
+ int use_sha384 = wpa_key_mgmt_sha384(sm->key_mgmt);
+
+ /* RSNIE[PMKR0Name/PMKR1Name] */
+ rsnie = wpabuf_put(buf, sizeof(*rsnie));
+ rsnie->elem_id = WLAN_EID_RSN;
+ WPA_PUT_LE16(rsnie->version, RSN_VERSION);
+
+ /* Group Suite Selector */
+ if (!wpa_cipher_valid_group(sm->group_cipher)) {
+ wpa_printf(MSG_WARNING, "FT: Invalid group cipher (%d)",
+ sm->group_cipher);
+ return -1;
+ }
+ pos = wpabuf_put(buf, RSN_SELECTOR_LEN);
+ RSN_SELECTOR_PUT(pos, wpa_cipher_to_suite(WPA_PROTO_RSN,
+ sm->group_cipher));
+
+ /* Pairwise Suite Count */
+ wpabuf_put_le16(buf, 1);
+
+ /* Pairwise Suite List */
+ if (!wpa_cipher_valid_pairwise(sm->pairwise_cipher)) {
+ wpa_printf(MSG_WARNING, "FT: Invalid pairwise cipher (%d)",
+ sm->pairwise_cipher);
+ return -1;
+ }
+ pos = wpabuf_put(buf, RSN_SELECTOR_LEN);
+ RSN_SELECTOR_PUT(pos, wpa_cipher_to_suite(WPA_PROTO_RSN,
+ sm->pairwise_cipher));
+
+ /* Authenticated Key Management Suite Count */
+ wpabuf_put_le16(buf, 1);
+
+ /* Authenticated Key Management Suite List */
+ pos = wpabuf_put(buf, RSN_SELECTOR_LEN);
+ if (sm->key_mgmt == WPA_KEY_MGMT_FT_FILS_SHA256)
+ RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_FILS_SHA256);
+ else if (sm->key_mgmt == WPA_KEY_MGMT_FT_FILS_SHA384)
+ RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_FILS_SHA384);
+ else {
+ wpa_printf(MSG_WARNING,
+ "FILS+FT: Invalid key management type (%d)",
+ sm->key_mgmt);
+ return -1;
+ }
+
+ /* RSN Capabilities */
+ capab = 0;
+#ifdef CONFIG_IEEE80211W
+ if (sm->mgmt_group_cipher == WPA_CIPHER_AES_128_CMAC)
+ capab |= WPA_CAPABILITY_MFPC;
+#endif /* CONFIG_IEEE80211W */
+ if (sm->ocv)
+ capab |= WPA_CAPABILITY_OCVC;
+ wpabuf_put_le16(buf, capab);
+
+ /* PMKID Count */
+ wpabuf_put_le16(buf, 1);
+
+ /* PMKID List [PMKR1Name] */
+ wpa_hexdump_key(MSG_DEBUG, "FILS+FT: XXKey (FILS-FT)",
+ sm->fils_ft, sm->fils_ft_len);
+ wpa_hexdump_ascii(MSG_DEBUG, "FILS+FT: SSID", sm->ssid, sm->ssid_len);
+ wpa_hexdump(MSG_DEBUG, "FILS+FT: MDID",
+ sm->mobility_domain, MOBILITY_DOMAIN_ID_LEN);
+ wpa_hexdump_ascii(MSG_DEBUG, "FILS+FT: R0KH-ID",
+ sm->r0kh_id, sm->r0kh_id_len);
+ if (wpa_derive_pmk_r0(sm->fils_ft, sm->fils_ft_len, sm->ssid,
+ sm->ssid_len, sm->mobility_domain,
+ sm->r0kh_id, sm->r0kh_id_len, sm->own_addr,
+ sm->pmk_r0, sm->pmk_r0_name, use_sha384) < 0) {
+ wpa_printf(MSG_WARNING, "FILS+FT: Could not derive PMK-R0");
+ return -1;
+ }
+ sm->pmk_r0_len = use_sha384 ? SHA384_MAC_LEN : PMK_LEN;
+ wpa_hexdump_key(MSG_DEBUG, "FILS+FT: PMK-R0",
+ sm->pmk_r0, sm->pmk_r0_len);
+ wpa_hexdump(MSG_DEBUG, "FILS+FT: PMKR0Name",
+ sm->pmk_r0_name, WPA_PMK_NAME_LEN);
+ wpa_printf(MSG_DEBUG, "FILS+FT: R1KH-ID: " MACSTR,
+ MAC2STR(sm->r1kh_id));
+ pos = wpabuf_put(buf, WPA_PMK_NAME_LEN);
+ if (wpa_derive_pmk_r1_name(sm->pmk_r0_name, sm->r1kh_id, sm->own_addr,
+ sm->pmk_r1_name, use_sha384) < 0) {
+ wpa_printf(MSG_WARNING, "FILS+FT: Could not derive PMKR1Name");
+ return -1;
+ }
+ wpa_hexdump(MSG_DEBUG, "FILS+FT: PMKR1Name", sm->pmk_r1_name,
+ WPA_PMK_NAME_LEN);
+ os_memcpy(pos, sm->pmk_r1_name, WPA_PMK_NAME_LEN);
+
+#ifdef CONFIG_IEEE80211W
+ if (sm->mgmt_group_cipher == WPA_CIPHER_AES_128_CMAC) {
+ /* Management Group Cipher Suite */
+ pos = wpabuf_put(buf, RSN_SELECTOR_LEN);
+ RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_AES_128_CMAC);
+ }
+#endif /* CONFIG_IEEE80211W */
+
+ rsnie->len = ((u8 *) wpabuf_put(buf, 0) - (u8 *) rsnie) - 2;
+ return 0;
+}
+#endif /* CONFIG_IEEE80211R */
+
+
+struct wpabuf * fils_build_assoc_req(struct wpa_sm *sm, const u8 **kek,
+ size_t *kek_len, const u8 **snonce,
+ const u8 **anonce,
+ const struct wpabuf **hlp,
+ unsigned int num_hlp)
+{
+ struct wpabuf *buf;
+ size_t len;
+ unsigned int i;
+
+ len = 1000;
+#ifdef CONFIG_IEEE80211R
+ if (sm->fils_ft_ies)
+ len += wpabuf_len(sm->fils_ft_ies);
+ if (wpa_key_mgmt_ft(sm->key_mgmt))
+ len += 256;
+#endif /* CONFIG_IEEE80211R */
+ for (i = 0; hlp && i < num_hlp; i++)
+ len += 10 + wpabuf_len(hlp[i]);
+ buf = wpabuf_alloc(len);
+ if (!buf)
+ return NULL;
+
+#ifdef CONFIG_IEEE80211R
+ if (wpa_key_mgmt_ft(sm->key_mgmt) && sm->fils_ft_ies) {
+ /* MDE and FTE when using FILS+FT */
+ wpabuf_put_buf(buf, sm->fils_ft_ies);
+ /* RSNE with PMKR1Name in PMKID field */
+ if (fils_ft_build_assoc_req_rsne(sm, buf) < 0) {
+ wpabuf_free(buf);
+ return NULL;
+ }
+ }
+#endif /* CONFIG_IEEE80211R */
+
+ /* FILS Session */
+ wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */
+ wpabuf_put_u8(buf, 1 + FILS_SESSION_LEN); /* Length */
+ /* Element ID Extension */
+ wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_SESSION);
+ wpabuf_put_data(buf, sm->fils_session, FILS_SESSION_LEN);
+
+ /* Everything after FILS Session element gets encrypted in the driver
+ * with KEK. The buffer returned from here is the plaintext version. */
+
+ /* TODO: FILS Public Key */
+
+ /* FILS Key Confirm */
+ wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */
+ wpabuf_put_u8(buf, 1 + sm->fils_key_auth_len); /* Length */
+ /* Element ID Extension */
+ wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_KEY_CONFIRM);
+ wpabuf_put_data(buf, sm->fils_key_auth_sta, sm->fils_key_auth_len);
+
+ /* FILS HLP Container */
+ for (i = 0; hlp && i < num_hlp; i++) {
+ const u8 *pos = wpabuf_head(hlp[i]);
+ size_t left = wpabuf_len(hlp[i]);
+
+ wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */
+ if (left <= 254)
+ len = 1 + left;
+ else
+ len = 255;
+ wpabuf_put_u8(buf, len); /* Length */
+ /* Element ID Extension */
+ wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_HLP_CONTAINER);
+ /* Destination MAC Address, Source MAC Address, HLP Packet.
+ * HLP Packet is in MSDU format (i.e., included the LLC/SNAP
+ * header when LPD is used). */
+ wpabuf_put_data(buf, pos, len - 1);
+ pos += len - 1;
+ left -= len - 1;
+ while (left) {
+ wpabuf_put_u8(buf, WLAN_EID_FRAGMENT);
+ len = left > 255 ? 255 : left;
+ wpabuf_put_u8(buf, len);
+ wpabuf_put_data(buf, pos, len);
+ pos += len;
+ left -= len;
+ }
+ }
+
+ /* TODO: FILS IP Address Assignment */
+
+#ifdef CONFIG_OCV
+ if (wpa_sm_ocv_enabled(sm)) {
+ struct wpa_channel_info ci;
+ u8 *pos;
+
+ if (wpa_sm_channel_info(sm, &ci) != 0) {
+ wpa_printf(MSG_WARNING,
+ "FILS: Failed to get channel info for OCI element");
+ wpabuf_free(buf);
+ return NULL;
+ }
+
+ pos = wpabuf_put(buf, OCV_OCI_EXTENDED_LEN);
+ if (ocv_insert_extended_oci(&ci, pos) < 0) {
+ wpabuf_free(buf);
+ return NULL;
+ }
+ }
+#endif /* CONFIG_OCV */
+
+ wpa_hexdump_buf(MSG_DEBUG, "FILS: Association Request plaintext", buf);
+
+ *kek = sm->ptk.kek;
+ *kek_len = sm->ptk.kek_len;
+ wpa_hexdump_key(MSG_DEBUG, "FILS: KEK for AEAD", *kek, *kek_len);
+ *snonce = sm->fils_nonce;
+ wpa_hexdump(MSG_DEBUG, "FILS: SNonce for AEAD AAD",
+ *snonce, FILS_NONCE_LEN);
+ *anonce = sm->fils_anonce;
+ wpa_hexdump(MSG_DEBUG, "FILS: ANonce for AEAD AAD",
+ *anonce, FILS_NONCE_LEN);
+
+ return buf;
+}
+
+
+static void fils_process_hlp_resp(struct wpa_sm *sm, const u8 *resp, size_t len)
+{
+ const u8 *pos, *end;
+
+ wpa_hexdump(MSG_MSGDUMP, "FILS: HLP response", resp, len);
+ if (len < 2 * ETH_ALEN)
+ return;
+ pos = resp + 2 * ETH_ALEN;
+ end = resp + len;
+ if (end - pos >= 6 &&
+ os_memcmp(pos, "\xaa\xaa\x03\x00\x00\x00", 6) == 0)
+ pos += 6; /* Remove SNAP/LLC header */
+ wpa_sm_fils_hlp_rx(sm, resp, resp + ETH_ALEN, pos, end - pos);
+}
+
+
+static void fils_process_hlp_container(struct wpa_sm *sm, const u8 *pos,
+ size_t len)
+{
+ const u8 *end = pos + len;
+ u8 *tmp, *tmp_pos;
+
+ /* Check if there are any FILS HLP Container elements */
+ while (end - pos >= 2) {
+ if (2 + pos[1] > end - pos)
+ return;
+ if (pos[0] == WLAN_EID_EXTENSION &&
+ pos[1] >= 1 + 2 * ETH_ALEN &&
+ pos[2] == WLAN_EID_EXT_FILS_HLP_CONTAINER)
+ break;
+ pos += 2 + pos[1];
+ }
+ if (end - pos < 2)
+ return; /* No FILS HLP Container elements */
+
+ tmp = os_malloc(end - pos);
+ if (!tmp)
+ return;
+
+ while (end - pos >= 2) {
+ if (2 + pos[1] > end - pos ||
+ pos[0] != WLAN_EID_EXTENSION ||
+ pos[1] < 1 + 2 * ETH_ALEN ||
+ pos[2] != WLAN_EID_EXT_FILS_HLP_CONTAINER)
+ break;
+ tmp_pos = tmp;
+ os_memcpy(tmp_pos, pos + 3, pos[1] - 1);
+ tmp_pos += pos[1] - 1;
+ pos += 2 + pos[1];
+
+ /* Add possible fragments */
+ while (end - pos >= 2 && pos[0] == WLAN_EID_FRAGMENT &&
+ 2 + pos[1] <= end - pos) {
+ os_memcpy(tmp_pos, pos + 2, pos[1]);
+ tmp_pos += pos[1];
+ pos += 2 + pos[1];
+ }
+
+ fils_process_hlp_resp(sm, tmp, tmp_pos - tmp);
+ }
+
+ os_free(tmp);
+}
+
+
+int fils_process_assoc_resp(struct wpa_sm *sm, const u8 *resp, size_t len)
+{
+ const struct ieee80211_mgmt *mgmt;
+ const u8 *end, *ie_start;
+ struct ieee802_11_elems elems;
+ int keylen, rsclen;
+ enum wpa_alg alg;
+ struct wpa_gtk_data gd;
+ int maxkeylen;
+ struct wpa_eapol_ie_parse kde;
+
+ if (!sm || !sm->ptk_set) {
+ wpa_printf(MSG_DEBUG, "FILS: No KEK available");
+ return -1;
+ }
+
+ if (!wpa_key_mgmt_fils(sm->key_mgmt)) {
+ wpa_printf(MSG_DEBUG, "FILS: Not a FILS AKM");
+ return -1;
+ }
+
+ if (sm->fils_completed) {
+ wpa_printf(MSG_DEBUG,
+ "FILS: Association has already been completed for this FILS authentication - ignore unexpected retransmission");
+ return -1;
+ }
+
+ wpa_hexdump(MSG_DEBUG, "FILS: (Re)Association Response frame",
+ resp, len);
+
+ mgmt = (const struct ieee80211_mgmt *) resp;
+ if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_resp))
+ return -1;
+
+ end = resp + len;
+ /* Same offset for Association Response and Reassociation Response */
+ ie_start = mgmt->u.assoc_resp.variable;
+
+ if (ieee802_11_parse_elems(ie_start, end - ie_start, &elems, 1) ==
+ ParseFailed) {
+ wpa_printf(MSG_DEBUG,
+ "FILS: Failed to parse decrypted elements");
+ goto fail;
+ }
+
+ if (!elems.fils_session) {
+ wpa_printf(MSG_DEBUG, "FILS: No FILS Session element");
+ return -1;
+ }
+ if (os_memcmp(elems.fils_session, sm->fils_session,
+ FILS_SESSION_LEN) != 0) {
+ wpa_printf(MSG_DEBUG, "FILS: FILS Session mismatch");
+ wpa_hexdump(MSG_DEBUG, "FILS: Received FILS Session",
+ elems.fils_session, FILS_SESSION_LEN);
+ wpa_hexdump(MSG_DEBUG, "FILS: Expected FILS Session",
+ sm->fils_session, FILS_SESSION_LEN);
+ }
+
+ /* TODO: FILS Public Key */
+
+ if (!elems.fils_key_confirm) {
+ wpa_printf(MSG_DEBUG, "FILS: No FILS Key Confirm element");
+ goto fail;
+ }
+ if (elems.fils_key_confirm_len != sm->fils_key_auth_len) {
+ wpa_printf(MSG_DEBUG,
+ "FILS: Unexpected Key-Auth length %d (expected %d)",
+ elems.fils_key_confirm_len,
+ (int) sm->fils_key_auth_len);
+ goto fail;
+ }
+ if (os_memcmp(elems.fils_key_confirm, sm->fils_key_auth_ap,
+ sm->fils_key_auth_len) != 0) {
+ wpa_printf(MSG_DEBUG, "FILS: Key-Auth mismatch");
+ wpa_hexdump(MSG_DEBUG, "FILS: Received Key-Auth",
+ elems.fils_key_confirm,
+ elems.fils_key_confirm_len);
+ wpa_hexdump(MSG_DEBUG, "FILS: Expected Key-Auth",
+ sm->fils_key_auth_ap, sm->fils_key_auth_len);
+ goto fail;
+ }
+
+#ifdef CONFIG_OCV
+ if (wpa_sm_ocv_enabled(sm)) {
+ struct wpa_channel_info ci;
+
+ if (wpa_sm_channel_info(sm, &ci) != 0) {
+ wpa_printf(MSG_WARNING,
+ "Failed to get channel info to validate received OCI in FILS (Re)Association Response frame");
+ goto fail;
+ }
+
+ if (ocv_verify_tx_params(elems.oci, elems.oci_len, &ci,
+ channel_width_to_int(ci.chanwidth),
+ ci.seg1_idx) != 0) {
+ wpa_printf(MSG_WARNING, "FILS: %s", ocv_errorstr);
+ goto fail;
+ }
+ }
+#endif /* CONFIG_OCV */
+
+#ifdef CONFIG_IEEE80211R
+ if (wpa_key_mgmt_ft(sm->key_mgmt) && sm->fils_ft_ies) {
+ struct wpa_ie_data rsn;
+
+ /* Check that PMKR1Name derived by the AP matches */
+ if (!elems.rsn_ie ||
+ wpa_parse_wpa_ie_rsn(elems.rsn_ie - 2, elems.rsn_ie_len + 2,
+ &rsn) < 0 ||
+ !rsn.pmkid || rsn.num_pmkid != 1 ||
+ os_memcmp(rsn.pmkid, sm->pmk_r1_name,
+ WPA_PMK_NAME_LEN) != 0) {
+ wpa_printf(MSG_DEBUG,
+ "FILS+FT: No RSNE[PMKR1Name] match in AssocResp");
+ goto fail;
+ }
+ }
+#endif /* CONFIG_IEEE80211R */
+
+ /* Key Delivery */
+ if (!elems.key_delivery) {
+ wpa_printf(MSG_DEBUG, "FILS: No Key Delivery element");
+ goto fail;
+ }
+
+ /* Parse GTK and set the key to the driver */
+ os_memset(&gd, 0, sizeof(gd));
+ if (wpa_supplicant_parse_ies(elems.key_delivery + WPA_KEY_RSC_LEN,
+ elems.key_delivery_len - WPA_KEY_RSC_LEN,
+ &kde) < 0) {
+ wpa_printf(MSG_DEBUG, "FILS: Failed to parse KDEs");
+ goto fail;
+ }
+ if (!kde.gtk) {
+ wpa_printf(MSG_DEBUG, "FILS: No GTK KDE");
+ goto fail;
+ }
+ maxkeylen = gd.gtk_len = kde.gtk_len - 2;
+ if (wpa_supplicant_check_group_cipher(sm, sm->group_cipher,
+ gd.gtk_len, maxkeylen,
+ &gd.key_rsc_len, &gd.alg))
+ goto fail;
+
+ wpa_hexdump_key(MSG_DEBUG, "FILS: Received GTK", kde.gtk, kde.gtk_len);
+ gd.keyidx = kde.gtk[0] & 0x3;
+ gd.tx = wpa_supplicant_gtk_tx_bit_workaround(sm,
+ !!(kde.gtk[0] & BIT(2)));
+ if (kde.gtk_len - 2 > sizeof(gd.gtk)) {
+ wpa_printf(MSG_DEBUG, "FILS: Too long GTK in GTK KDE (len=%lu)",
+ (unsigned long) kde.gtk_len - 2);
+ goto fail;
+ }
+ os_memcpy(gd.gtk, kde.gtk + 2, kde.gtk_len - 2);
+
+ wpa_printf(MSG_DEBUG, "FILS: Set GTK to driver");
+ if (wpa_supplicant_install_gtk(sm, &gd, elems.key_delivery, 0) < 0) {
+ wpa_printf(MSG_DEBUG, "FILS: Failed to set GTK");
+ goto fail;
+ }
+
+ if (ieee80211w_set_keys(sm, &kde) < 0) {
+ wpa_printf(MSG_DEBUG, "FILS: Failed to set IGTK");
+ goto fail;
+ }
+
+ alg = wpa_cipher_to_alg(sm->pairwise_cipher);
+ keylen = wpa_cipher_key_len(sm->pairwise_cipher);
+ if (keylen <= 0 || (unsigned int) keylen != sm->ptk.tk_len) {
+ wpa_printf(MSG_DEBUG, "FILS: TK length mismatch: %u != %lu",
+ keylen, (long unsigned int) sm->ptk.tk_len);
+ goto fail;
+ }
+ rsclen = wpa_cipher_rsc_len(sm->pairwise_cipher);
+ wpa_hexdump_key(MSG_DEBUG, "FILS: Set TK to driver",
+ sm->ptk.tk, keylen);
+ if (wpa_sm_set_key(sm, alg, sm->bssid, 0, 1, null_rsc, rsclen,
+ sm->ptk.tk, keylen) < 0) {
+ wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
+ "FILS: Failed to set PTK to the driver (alg=%d keylen=%d bssid="
+ MACSTR ")",
+ alg, keylen, MAC2STR(sm->bssid));
+ goto fail;
+ }
+
+ /* TODO: TK could be cleared after auth frame exchange now that driver
+ * takes care of association frame encryption/decryption. */
+ /* TK is not needed anymore in supplicant */
+ os_memset(sm->ptk.tk, 0, WPA_TK_MAX_LEN);
+ sm->ptk.tk_len = 0;
+ sm->ptk.installed = 1;
+
+ /* FILS HLP Container */
+ fils_process_hlp_container(sm, ie_start, end - ie_start);
+
+ /* TODO: FILS IP Address Assignment */
+
+ wpa_printf(MSG_DEBUG, "FILS: Auth+Assoc completed successfully");
+ sm->fils_completed = 1;
+
+ return 0;
+fail:
+ return -1;
+}
+
+
+void wpa_sm_set_reset_fils_completed(struct wpa_sm *sm, int set)
+{
+ if (sm)
+ sm->fils_completed = !!set;
+}
+
+#endif /* CONFIG_FILS */
+
+
+int wpa_fils_is_completed(struct wpa_sm *sm)
+{
+#ifdef CONFIG_FILS
+ return sm && sm->fils_completed;
+#else /* CONFIG_FILS */
+ return 0;
+#endif /* CONFIG_FILS */
+}
+
+
+#ifdef CONFIG_OWE
+
+struct wpabuf * owe_build_assoc_req(struct wpa_sm *sm, u16 group)
+{
+ struct wpabuf *ie = NULL, *pub = NULL;
+ size_t prime_len;
+
+ if (group == 19)
+ prime_len = 32;
+ else if (group == 20)
+ prime_len = 48;
+ else if (group == 21)
+ prime_len = 66;
+ else
+ return NULL;
+
+ crypto_ecdh_deinit(sm->owe_ecdh);
+ sm->owe_ecdh = crypto_ecdh_init(group);
+ if (!sm->owe_ecdh)
+ goto fail;
+ sm->owe_group = group;
+ pub = crypto_ecdh_get_pubkey(sm->owe_ecdh, 0);
+ pub = wpabuf_zeropad(pub, prime_len);
+ if (!pub)
+ goto fail;
+
+ ie = wpabuf_alloc(5 + wpabuf_len(pub));
+ if (!ie)
+ goto fail;
+ wpabuf_put_u8(ie, WLAN_EID_EXTENSION);
+ wpabuf_put_u8(ie, 1 + 2 + wpabuf_len(pub));
+ wpabuf_put_u8(ie, WLAN_EID_EXT_OWE_DH_PARAM);
+ wpabuf_put_le16(ie, group);
+ wpabuf_put_buf(ie, pub);
+ wpabuf_free(pub);
+ wpa_hexdump_buf(MSG_DEBUG, "OWE: Diffie-Hellman Parameter element",
+ ie);
+
+ return ie;
+fail:
+ wpabuf_free(pub);
+ crypto_ecdh_deinit(sm->owe_ecdh);
+ sm->owe_ecdh = NULL;
+ return NULL;
+}
+
+
+int owe_process_assoc_resp(struct wpa_sm *sm, const u8 *bssid,
+ const u8 *resp_ies, size_t resp_ies_len)
+{
+ struct ieee802_11_elems elems;
+ u16 group;
+ struct wpabuf *secret, *pub, *hkey;
+ int res;
+ u8 prk[SHA512_MAC_LEN], pmkid[SHA512_MAC_LEN];
+ const char *info = "OWE Key Generation";
+ const u8 *addr[2];
+ size_t len[2];
+ size_t hash_len, prime_len;
+ struct wpa_ie_data data;
+
+ if (!resp_ies ||
+ ieee802_11_parse_elems(resp_ies, resp_ies_len, &elems, 1) ==
+ ParseFailed) {
+ wpa_printf(MSG_INFO,
+ "OWE: Could not parse Association Response frame elements");
+ return -1;
+ }
+
+ if (sm->cur_pmksa && elems.rsn_ie &&
+ wpa_parse_wpa_ie_rsn(elems.rsn_ie - 2, 2 + elems.rsn_ie_len,
+ &data) == 0 &&
+ data.num_pmkid == 1 && data.pmkid &&
+ os_memcmp(sm->cur_pmksa->pmkid, data.pmkid, PMKID_LEN) == 0) {
+ wpa_printf(MSG_DEBUG, "OWE: Use PMKSA caching");
+ wpa_sm_set_pmk_from_pmksa(sm);
+ return 0;
+ }
+
+ if (!elems.owe_dh) {
+ wpa_printf(MSG_INFO,
+ "OWE: No Diffie-Hellman Parameter element found in Association Response frame");
+ return -1;
+ }
+
+ group = WPA_GET_LE16(elems.owe_dh);
+ if (group != sm->owe_group) {
+ wpa_printf(MSG_INFO,
+ "OWE: Unexpected Diffie-Hellman group in response: %u",
+ group);
+ return -1;
+ }
+
+ if (!sm->owe_ecdh) {
+ wpa_printf(MSG_INFO, "OWE: No ECDH state available");
+ return -1;
+ }
+
+ if (group == 19)
+ prime_len = 32;
+ else if (group == 20)
+ prime_len = 48;
+ else if (group == 21)
+ prime_len = 66;
+ else
+ return -1;
+
+ secret = crypto_ecdh_set_peerkey(sm->owe_ecdh, 0,
+ elems.owe_dh + 2,
+ elems.owe_dh_len - 2);
+ secret = wpabuf_zeropad(secret, prime_len);
+ if (!secret) {
+ wpa_printf(MSG_DEBUG, "OWE: Invalid peer DH public key");
+ return -1;
+ }
+ wpa_hexdump_buf_key(MSG_DEBUG, "OWE: DH shared secret", secret);
+
+ /* prk = HKDF-extract(C | A | group, z) */
+
+ pub = crypto_ecdh_get_pubkey(sm->owe_ecdh, 0);
+ if (!pub) {
+ wpabuf_clear_free(secret);
+ return -1;
+ }
+
+ /* PMKID = Truncate-128(Hash(C | A)) */
+ addr[0] = wpabuf_head(pub);
+ len[0] = wpabuf_len(pub);
+ addr[1] = elems.owe_dh + 2;
+ len[1] = elems.owe_dh_len - 2;
+ if (group == 19) {
+ res = sha256_vector(2, addr, len, pmkid);
+ hash_len = SHA256_MAC_LEN;
+ } else if (group == 20) {
+ res = sha384_vector(2, addr, len, pmkid);
+ hash_len = SHA384_MAC_LEN;
+ } else if (group == 21) {
+ res = sha512_vector(2, addr, len, pmkid);
+ hash_len = SHA512_MAC_LEN;
+ } else {
+ res = -1;
+ hash_len = 0;
+ }
+ pub = wpabuf_zeropad(pub, prime_len);
+ if (res < 0 || !pub) {
+ wpabuf_free(pub);
+ wpabuf_clear_free(secret);
+ return -1;
+ }
+
+ hkey = wpabuf_alloc(wpabuf_len(pub) + elems.owe_dh_len - 2 + 2);
+ if (!hkey) {
+ wpabuf_free(pub);
+ wpabuf_clear_free(secret);
+ return -1;
+ }
+
+ wpabuf_put_buf(hkey, pub); /* C */
+ wpabuf_free(pub);
+ wpabuf_put_data(hkey, elems.owe_dh + 2, elems.owe_dh_len - 2); /* A */
+ wpabuf_put_le16(hkey, sm->owe_group); /* group */
+ if (group == 19)
+ res = hmac_sha256(wpabuf_head(hkey), wpabuf_len(hkey),
+ wpabuf_head(secret), wpabuf_len(secret), prk);
+ else if (group == 20)
+ res = hmac_sha384(wpabuf_head(hkey), wpabuf_len(hkey),
+ wpabuf_head(secret), wpabuf_len(secret), prk);
+ else if (group == 21)
+ res = hmac_sha512(wpabuf_head(hkey), wpabuf_len(hkey),
+ wpabuf_head(secret), wpabuf_len(secret), prk);
+ wpabuf_clear_free(hkey);
+ wpabuf_clear_free(secret);
+ if (res < 0)
+ return -1;
+
+ wpa_hexdump_key(MSG_DEBUG, "OWE: prk", prk, hash_len);
+
+ /* PMK = HKDF-expand(prk, "OWE Key Generation", n) */
+
+ if (group == 19)
+ res = hmac_sha256_kdf(prk, hash_len, NULL, (const u8 *) info,
+ os_strlen(info), sm->pmk, hash_len);
+ else if (group == 20)
+ res = hmac_sha384_kdf(prk, hash_len, NULL, (const u8 *) info,
+ os_strlen(info), sm->pmk, hash_len);
+ else if (group == 21)
+ res = hmac_sha512_kdf(prk, hash_len, NULL, (const u8 *) info,
+ os_strlen(info), sm->pmk, hash_len);
+ os_memset(prk, 0, SHA512_MAC_LEN);
+ if (res < 0) {
+ sm->pmk_len = 0;
+ return -1;
+ }
+ sm->pmk_len = hash_len;
+
+ wpa_hexdump_key(MSG_DEBUG, "OWE: PMK", sm->pmk, sm->pmk_len);
+ wpa_hexdump(MSG_DEBUG, "OWE: PMKID", pmkid, PMKID_LEN);
+ pmksa_cache_add(sm->pmksa, sm->pmk, sm->pmk_len, pmkid, NULL, 0,
+ bssid, sm->own_addr, sm->network_ctx, sm->key_mgmt,
+ NULL);
+
+ return 0;
+}
+
+#endif /* CONFIG_OWE */
+
+
+void wpa_sm_set_fils_cache_id(struct wpa_sm *sm, const u8 *fils_cache_id)
+{
+#ifdef CONFIG_FILS
+ if (sm && fils_cache_id) {
+ sm->fils_cache_id_set = 1;
+ os_memcpy(sm->fils_cache_id, fils_cache_id, FILS_CACHE_ID_LEN);
+ }
+#endif /* CONFIG_FILS */
+}
+
+
+#ifdef CONFIG_DPP2
+void wpa_sm_set_dpp_z(struct wpa_sm *sm, const struct wpabuf *z)
+{
+ if (sm) {
+ wpabuf_clear_free(sm->dpp_z);
+ sm->dpp_z = z ? wpabuf_dup(z) : NULL;
+ }
+}
+#endif /* CONFIG_DPP2 */
projects / thirdparty / hostap.git / blobdiff