static const int dot11RSNAConfigSATimeout = 60;
-static inline void wpa_auth_mic_failure_report(
+static inline int wpa_auth_mic_failure_report(
struct wpa_authenticator *wpa_auth, const u8 *addr)
{
if (wpa_auth->cb.mic_failure_report)
- wpa_auth->cb.mic_failure_report(wpa_auth->cb.ctx, addr);
+ return wpa_auth->cb.mic_failure_report(wpa_auth->cb.ctx, addr);
+ return 0;
}
}
-static void wpa_group_set_key_len(struct wpa_group *group, int cipher)
-{
- switch (cipher) {
- case WPA_CIPHER_CCMP:
- group->GTK_len = 16;
- break;
- case WPA_CIPHER_TKIP:
- group->GTK_len = 32;
- break;
- case WPA_CIPHER_WEP104:
- group->GTK_len = 13;
- break;
- case WPA_CIPHER_WEP40:
- group->GTK_len = 5;
- break;
- }
-}
-
-
static int wpa_group_init_gmk_and_counter(struct wpa_authenticator *wpa_auth,
struct wpa_group *group)
{
- u8 buf[ETH_ALEN + 8 + sizeof(group)];
+ u8 buf[ETH_ALEN + 8 + sizeof(unsigned long)];
u8 rkey[32];
+ unsigned long ptr;
if (random_get_bytes(group->GMK, WPA_GMK_LEN) < 0)
return -1;
*/
os_memcpy(buf, wpa_auth->addr, ETH_ALEN);
wpa_get_ntp_timestamp(buf + ETH_ALEN);
- os_memcpy(buf + ETH_ALEN + 8, &group, sizeof(group));
+ ptr = (unsigned long) group;
+ os_memcpy(buf + ETH_ALEN + 8, &ptr, sizeof(ptr));
if (random_get_bytes(rkey, sizeof(rkey)) < 0)
return -1;
group->GTKAuthenticator = TRUE;
group->vlan_id = vlan_id;
-
- wpa_group_set_key_len(group, wpa_auth->conf.wpa_group);
+ group->GTK_len = wpa_cipher_key_len(wpa_auth->conf.wpa_group);
if (random_pool_ready() != 1) {
wpa_printf(MSG_INFO, "WPA: Not enough entropy in random pool "
* configuration.
*/
group = wpa_auth->group;
- wpa_group_set_key_len(group, wpa_auth->conf.wpa_group);
+ group->GTK_len = wpa_cipher_key_len(wpa_auth->conf.wpa_group);
group->GInit = TRUE;
wpa_group_sm_step(wpa_auth, group);
group->GInit = FALSE;
#endif /* CONFIG_IEEE80211R */
-static void wpa_receive_error_report(struct wpa_authenticator *wpa_auth,
- struct wpa_state_machine *sm, int group)
+static int wpa_receive_error_report(struct wpa_authenticator *wpa_auth,
+ struct wpa_state_machine *sm, int group)
{
/* Supplicant reported a Michael MIC error */
wpa_auth_vlogger(wpa_auth, sm->addr, LOGGER_INFO,
"ignore Michael MIC failure report since "
"pairwise cipher is not TKIP");
} else {
- wpa_auth_mic_failure_report(wpa_auth, sm->addr);
+ if (wpa_auth_mic_failure_report(wpa_auth, sm->addr) > 0)
+ return 1; /* STA entry was removed */
sm->dot11RSNAStatsTKIPRemoteMICFailures++;
wpa_auth->dot11RSNAStatsTKIPRemoteMICFailures++;
}
* Authenticator may do it, let's change the keys now anyway.
*/
wpa_request_new_ptk(sm);
+ return 0;
}
if (msg == REQUEST || msg == PAIRWISE_2 || msg == PAIRWISE_4 ||
msg == GROUP_2) {
u16 ver = key_info & WPA_KEY_INFO_TYPE_MASK;
- if (sm->pairwise == WPA_CIPHER_CCMP) {
+ if (sm->pairwise == WPA_CIPHER_CCMP ||
+ sm->pairwise == WPA_CIPHER_GCMP) {
if (wpa_use_aes_cmac(sm) &&
ver != WPA_KEY_INFO_TYPE_AES_128_CMAC) {
wpa_auth_logger(wpa_auth, sm->addr,
wpa_auth_logger(wpa_auth, sm->addr,
LOGGER_WARNING,
"did not use HMAC-SHA1-AES "
- "with CCMP");
+ "with CCMP/GCMP");
return;
}
}
#endif /* CONFIG_PEERKEY */
return;
} else if (key_info & WPA_KEY_INFO_ERROR) {
- wpa_receive_error_report(
- wpa_auth, sm,
- !(key_info & WPA_KEY_INFO_KEY_TYPE));
+ if (wpa_receive_error_report(
+ wpa_auth, sm,
+ !(key_info & WPA_KEY_INFO_KEY_TYPE)) > 0)
+ return; /* STA entry was removed */
} else if (key_info & WPA_KEY_INFO_KEY_TYPE) {
wpa_auth_logger(wpa_auth, sm->addr, LOGGER_INFO,
"received EAPOL-Key Request for new "
version = force_version;
else if (wpa_use_aes_cmac(sm))
version = WPA_KEY_INFO_TYPE_AES_128_CMAC;
- else if (sm->pairwise == WPA_CIPHER_CCMP)
+ else if (sm->pairwise != WPA_CIPHER_TKIP)
version = WPA_KEY_INFO_TYPE_HMAC_SHA1_AES;
else
version = WPA_KEY_INFO_TYPE_HMAC_MD5_RC4;
WPA_PUT_BE16(key->key_info, key_info);
alg = pairwise ? sm->pairwise : wpa_auth->conf.wpa_group;
- switch (alg) {
- case WPA_CIPHER_CCMP:
- WPA_PUT_BE16(key->key_length, 16);
- break;
- case WPA_CIPHER_TKIP:
- WPA_PUT_BE16(key->key_length, 32);
- break;
- case WPA_CIPHER_WEP40:
- WPA_PUT_BE16(key->key_length, 5);
- break;
- case WPA_CIPHER_WEP104:
- WPA_PUT_BE16(key->key_length, 13);
- break;
- }
+ WPA_PUT_BE16(key->key_length, wpa_cipher_key_len(alg));
if (key_info & WPA_KEY_INFO_SMK_MESSAGE)
WPA_PUT_BE16(key->key_length, 0);
}
-static enum wpa_alg wpa_alg_enum(int alg)
-{
- switch (alg) {
- case WPA_CIPHER_CCMP:
- return WPA_ALG_CCMP;
- case WPA_CIPHER_TKIP:
- return WPA_ALG_TKIP;
- case WPA_CIPHER_WEP104:
- case WPA_CIPHER_WEP40:
- return WPA_ALG_WEP;
- default:
- return WPA_ALG_NONE;
- }
-}
-
-
SM_STATE(WPA_PTK, INITIALIZE)
{
SM_ENTRY_MA(WPA_PTK, INITIALIZE, wpa_ptk);
static int wpa_derive_ptk(struct wpa_state_machine *sm, const u8 *pmk,
struct wpa_ptk *ptk)
{
- size_t ptk_len = sm->pairwise == WPA_CIPHER_CCMP ? 48 : 64;
+ size_t ptk_len = sm->pairwise != WPA_CIPHER_TKIP ? 48 : 64;
#ifdef CONFIG_IEEE80211R
if (wpa_key_mgmt_ft(sm->wpa_key_mgmt))
return wpa_auth_derive_ptk_ft(sm, pmk, ptk, ptk_len);
wpa_auth_get_seqnum(sm->wpa_auth, NULL, gsm->GN_igtk, igtk.pn) < 0)
os_memset(igtk.pn, 0, sizeof(igtk.pn));
os_memcpy(igtk.igtk, gsm->IGTK[gsm->GN_igtk - 4], WPA_IGTK_LEN);
+ if (sm->wpa_auth->conf.disable_gtk) {
+ /*
+ * Provide unique random IGTK to each STA to prevent use of
+ * IGTK in the BSS.
+ */
+ if (random_get_bytes(igtk.igtk, WPA_IGTK_LEN) < 0)
+ return pos;
+ }
pos = wpa_add_kde(pos, RSN_KEY_DATA_IGTK,
(const u8 *) &igtk, sizeof(igtk), NULL, 0);
SM_STATE(WPA_PTK, PTKINITNEGOTIATING)
{
- u8 rsc[WPA_KEY_RSC_LEN], *_rsc, *gtk, *kde, *pos;
+ u8 rsc[WPA_KEY_RSC_LEN], *_rsc, *gtk, *kde, *pos, dummy_gtk[32];
size_t gtk_len, kde_len;
struct wpa_group *gsm = sm->group;
u8 *wpa_ie;
secure = 1;
gtk = gsm->GTK[gsm->GN - 1];
gtk_len = gsm->GTK_len;
+ if (sm->wpa_auth->conf.disable_gtk) {
+ /*
+ * Provide unique random GTK to each STA to prevent use
+ * of GTK in the BSS.
+ */
+ if (random_get_bytes(dummy_gtk, gtk_len) < 0)
+ return;
+ gtk = dummy_gtk;
+ }
keyidx = gsm->GN;
_rsc = rsc;
encr = 1;
SM_ENTRY_MA(WPA_PTK, PTKINITDONE, wpa_ptk);
sm->EAPOLKeyReceived = FALSE;
if (sm->Pair) {
- enum wpa_alg alg;
- int klen;
- if (sm->pairwise == WPA_CIPHER_TKIP) {
- alg = WPA_ALG_TKIP;
- klen = 32;
- } else {
- alg = WPA_ALG_CCMP;
- klen = 16;
- }
+ enum wpa_alg alg = wpa_cipher_to_alg(sm->pairwise);
+ int klen = wpa_cipher_key_len(sm->pairwise);
if (wpa_auth_set_key(sm->wpa_auth, 0, alg, sm->addr, 0,
sm->PTK.tk1, klen)) {
wpa_sta_disconnect(sm->wpa_auth, sm->addr);
struct wpa_group *gsm = sm->group;
u8 *kde, *pos, hdr[2];
size_t kde_len;
+ u8 *gtk, dummy_gtk[32];
SM_ENTRY_MA(WPA_PTK_GROUP, REKEYNEGOTIATING, wpa_ptk_group);
wpa_auth_logger(sm->wpa_auth, sm->addr, LOGGER_DEBUG,
"sending 1/2 msg of Group Key Handshake");
+ gtk = gsm->GTK[gsm->GN - 1];
+ if (sm->wpa_auth->conf.disable_gtk) {
+ /*
+ * Provide unique random GTK to each STA to prevent use
+ * of GTK in the BSS.
+ */
+ if (random_get_bytes(dummy_gtk, gsm->GTK_len) < 0)
+ return;
+ gtk = dummy_gtk;
+ }
if (sm->wpa == WPA_VERSION_WPA2) {
kde_len = 2 + RSN_SELECTOR_LEN + 2 + gsm->GTK_len +
ieee80211w_kde_len(sm);
hdr[0] = gsm->GN & 0x03;
hdr[1] = 0;
pos = wpa_add_kde(pos, RSN_KEY_DATA_GROUPKEY, hdr, 2,
- gsm->GTK[gsm->GN - 1], gsm->GTK_len);
+ gtk, gsm->GTK_len);
pos = ieee80211w_kde_add(sm, pos);
} else {
- kde = gsm->GTK[gsm->GN - 1];
+ kde = gtk;
pos = kde + gsm->GTK_len;
}
static int wpa_group_update_sta(struct wpa_state_machine *sm, void *ctx)
{
+ if (ctx != NULL && ctx != sm->group)
+ return 0;
+
if (sm->wpa_ptk_state != WPA_PTK_PTKINITDONE) {
wpa_auth_logger(sm->wpa_auth, sm->addr, LOGGER_DEBUG,
"Not in PTKINITDONE; skip Group Key update");
"marking station for GTK rekeying");
}
+ /* Do not rekey GTK/IGTK when STA is in WNM-Sleep Mode */
+ if (sm->is_wnmsleep)
+ return 0;
+
sm->group->GKeyDoneStations++;
sm->GUpdateStationKeys = TRUE;
}
+#ifdef CONFIG_WNM
+/* update GTK when exiting WNM-Sleep Mode */
+void wpa_wnmsleep_rekey_gtk(struct wpa_state_machine *sm)
+{
+ if (sm->is_wnmsleep)
+ return;
+
+ wpa_group_update_sta(sm, NULL);
+}
+
+
+void wpa_set_wnmsleep(struct wpa_state_machine *sm, int flag)
+{
+ sm->is_wnmsleep = !!flag;
+}
+
+
+int wpa_wnmsleep_gtk_subelem(struct wpa_state_machine *sm, u8 *pos)
+{
+ struct wpa_group *gsm = sm->group;
+ u8 *start = pos;
+
+ /*
+ * GTK subelement:
+ * Sub-elem ID[1] | Length[1] | Key Info[2] | Key Length[1] | RSC[8] |
+ * Key[5..32]
+ */
+ *pos++ = WNM_SLEEP_SUBELEM_GTK;
+ *pos++ = 11 + gsm->GTK_len;
+ /* Key ID in B0-B1 of Key Info */
+ WPA_PUT_LE16(pos, gsm->GN & 0x03);
+ pos += 2;
+ *pos++ = gsm->GTK_len;
+ if (wpa_auth_get_seqnum(sm->wpa_auth, NULL, gsm->GN, pos) != 0)
+ return 0;
+ pos += 8;
+ os_memcpy(pos, gsm->GTK[gsm->GN - 1], gsm->GTK_len);
+ pos += gsm->GTK_len;
+
+ wpa_printf(MSG_DEBUG, "WNM: GTK Key ID %u in WNM-Sleep Mode exit",
+ gsm->GN);
+ wpa_hexdump_key(MSG_DEBUG, "WNM: GTK in WNM-Sleep Mode exit",
+ gsm->GTK[gsm->GN - 1], gsm->GTK_len);
+
+ return pos - start;
+}
+
+
+#ifdef CONFIG_IEEE80211W
+int wpa_wnmsleep_igtk_subelem(struct wpa_state_machine *sm, u8 *pos)
+{
+ struct wpa_group *gsm = sm->group;
+ u8 *start = pos;
+
+ /*
+ * IGTK subelement:
+ * Sub-elem ID[1] | Length[1] | KeyID[2] | PN[6] | Key[16]
+ */
+ *pos++ = WNM_SLEEP_SUBELEM_IGTK;
+ *pos++ = 2 + 6 + WPA_IGTK_LEN;
+ WPA_PUT_LE16(pos, gsm->GN_igtk);
+ pos += 2;
+ if (wpa_auth_get_seqnum(sm->wpa_auth, NULL, gsm->GN_igtk, pos) != 0)
+ return 0;
+ pos += 6;
+
+ os_memcpy(pos, gsm->IGTK[gsm->GN_igtk - 4], WPA_IGTK_LEN);
+ pos += WPA_IGTK_LEN;
+
+ wpa_printf(MSG_DEBUG, "WNM: IGTK Key ID %u in WNM-Sleep Mode exit",
+ gsm->GN_igtk);
+ wpa_hexdump_key(MSG_DEBUG, "WNM: IGTK in WNM-Sleep Mode exit",
+ gsm->IGTK[gsm->GN_igtk - 4], WPA_IGTK_LEN);
+
+ return pos - start;
+}
+#endif /* CONFIG_IEEE80211W */
+#endif /* CONFIG_WNM */
+
+
static void wpa_group_setkeys(struct wpa_authenticator *wpa_auth,
struct wpa_group *group)
{
group->GKeyDoneStations);
group->GKeyDoneStations = 0;
}
- wpa_auth_for_each_sta(wpa_auth, wpa_group_update_sta, NULL);
+ wpa_auth_for_each_sta(wpa_auth, wpa_group_update_sta, group);
wpa_printf(MSG_DEBUG, "wpa_group_setkeys: GKeyDoneStations=%d",
group->GKeyDoneStations);
}
int ret = 0;
if (wpa_auth_set_key(wpa_auth, group->vlan_id,
- wpa_alg_enum(wpa_auth->conf.wpa_group),
+ wpa_cipher_to_alg(wpa_auth->conf.wpa_group),
broadcast_ether_addr, group->GN,
group->GTK[group->GN - 1], group->GTK_len) < 0)
ret = -1;
}
-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;
- }
-}
-
-
#define RSN_SUITE "%02x-%02x-%02x-%d"
#define RSN_SUITE_ARG(s) \
((s) >> 24) & 0xff, ((s) >> 16) & 0xff, ((s) >> 8) & 0xff, (s) & 0xff
!!wpa_auth->conf.wpa_strict_rekey,
dot11RSNAConfigGroupUpdateCount,
dot11RSNAConfigPairwiseUpdateCount,
- wpa_cipher_bits(wpa_auth->conf.wpa_group),
+ wpa_cipher_key_len(wpa_auth->conf.wpa_group) * 8,
dot11RSNAConfigPMKLifetime,
dot11RSNAConfigPMKReauthThreshold,
dot11RSNAConfigSATimeout,
/* dot11RSNAStatsEntry */
- if (sm->wpa == WPA_VERSION_WPA) {
- if (sm->pairwise == WPA_CIPHER_CCMP)
- pairwise = WPA_CIPHER_SUITE_CCMP;
- else if (sm->pairwise == WPA_CIPHER_TKIP)
- pairwise = WPA_CIPHER_SUITE_TKIP;
- else if (sm->pairwise == WPA_CIPHER_WEP104)
- pairwise = WPA_CIPHER_SUITE_WEP104;
- else if (sm->pairwise == WPA_CIPHER_WEP40)
- pairwise = WPA_CIPHER_SUITE_WEP40;
- else if (sm->pairwise == WPA_CIPHER_NONE)
- pairwise = WPA_CIPHER_SUITE_NONE;
- } else if (sm->wpa == WPA_VERSION_WPA2) {
- if (sm->pairwise == WPA_CIPHER_CCMP)
- pairwise = RSN_CIPHER_SUITE_CCMP;
- else if (sm->pairwise == WPA_CIPHER_TKIP)
- pairwise = RSN_CIPHER_SUITE_TKIP;
- else if (sm->pairwise == WPA_CIPHER_WEP104)
- pairwise = RSN_CIPHER_SUITE_WEP104;
- else if (sm->pairwise == WPA_CIPHER_WEP40)
- pairwise = RSN_CIPHER_SUITE_WEP40;
- else if (sm->pairwise == WPA_CIPHER_NONE)
- pairwise = RSN_CIPHER_SUITE_NONE;
- } else
+ pairwise = wpa_cipher_to_suite(sm->wpa == WPA_VERSION_WPA2 ?
+ WPA_PROTO_RSN : WPA_PROTO_WPA,
+ sm->pairwise);
+ if (pairwise == 0)
return 0;
ret = os_snprintf(
wpa_send_eapol_timeout, wpa_auth, sm);
}
}
+
+
+int wpa_auth_uses_sae(struct wpa_state_machine *sm)
+{
+ if (sm == NULL)
+ return 0;
+ return wpa_key_mgmt_sae(sm->wpa_key_mgmt);
+}
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