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wlantest: Add support for FT-PSK initial association key derivation

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This adds minimal support for deriving keys for FT-PSK to allow the
initial mobility domain association to be analyzed in more detail.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2015-08-06 15:51:36 +03:00 committed by Jouni Malinen
parent e1eb0e9e6e
commit 3fb62bdae9
4 changed files with 58 additions and 7 deletions
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3
wlantest/bss.c
View file

@ -217,6 +217,9 @@ void bss_update(struct wlantest *wt, struct wlantest_bss *bss,
elems->wpa_ie_len + 2);
}
if (elems->mdie)
os_memcpy(bss->mdid, elems->mdie, 2);
if (!update)
return;

40
wlantest/rx_eapol.c
View file

@ -100,12 +100,42 @@ static int try_pmk(struct wlantest *wt, struct wlantest_bss *bss,
{
struct wpa_ptk ptk;
if (wpa_pmk_to_ptk(pmk->pmk, sizeof(pmk->pmk),
"Pairwise key expansion",
bss->bssid, sta->addr, sta->anonce, sta->snonce,
&ptk, sta->key_mgmt, sta->pairwise_cipher) < 0 ||
check_mic(ptk.kck, ptk.kck_len, sta->key_mgmt, ver, data, len) < 0)
if (wpa_key_mgmt_ft(sta->key_mgmt)) {
u8 pmk_r0[PMK_LEN];
u8 pmk_r0_name[WPA_PMK_NAME_LEN];
u8 pmk_r1[PMK_LEN];
u8 pmk_r1_name[WPA_PMK_NAME_LEN];
u8 ptk_name[WPA_PMK_NAME_LEN];
wpa_derive_pmk_r0(pmk->pmk, sizeof(pmk->pmk),
bss->ssid, bss->ssid_len, bss->mdid,
bss->r0kh_id, bss->r0kh_id_len,
sta->addr, pmk_r0, pmk_r0_name);
wpa_hexdump(MSG_DEBUG, "FT: PMK-R0", pmk_r0, PMK_LEN);
wpa_hexdump(MSG_DEBUG, "FT: PMKR0Name", pmk_r0_name,
WPA_PMK_NAME_LEN);
wpa_derive_pmk_r1(pmk_r0, pmk_r0_name, bss->r1kh_id,
sta->addr, pmk_r1, pmk_r1_name);
wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, PMK_LEN);
wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", pmk_r1_name,
WPA_PMK_NAME_LEN);
if (wpa_pmk_r1_to_ptk(pmk_r1, sta->snonce, sta->anonce,
sta->addr,
bss->bssid, pmk_r1_name, &ptk, ptk_name,
sta->key_mgmt,
sta->pairwise_cipher) < 0 ||
check_mic(ptk.kck, ptk.kck_len, sta->key_mgmt, ver, data,
len) < 0)
return -1;
} else if (wpa_pmk_to_ptk(pmk->pmk, sizeof(pmk->pmk),
"Pairwise key expansion",
bss->bssid, sta->addr, sta->anonce,
sta->snonce, &ptk, sta->key_mgmt,
sta->pairwise_cipher) < 0 ||
check_mic(ptk.kck, ptk.kck_len, sta->key_mgmt, ver, data,
len) < 0) {
return -1;
}
sta->tk_len = wpa_cipher_key_len(sta->pairwise_cipher);
wpa_printf(MSG_INFO, "Derived PTK for STA " MACSTR " BSSID " MACSTR,

18
wlantest/rx_mgmt.c
View file

@ -314,6 +314,9 @@ static void rx_mgmt_assoc_resp(struct wlantest *wt, const u8 *data, size_t len)
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 capab, status, aid;
const u8 *ies;
size_t ies_len;
struct wpa_ft_ies parse;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
@ -329,6 +332,9 @@ static void rx_mgmt_assoc_resp(struct wlantest *wt, const u8 *data, size_t len)
return;
}
ies = mgmt->u.assoc_resp.variable;
ies_len = len - (mgmt->u.assoc_resp.variable - data);
capab = le_to_host16(mgmt->u.assoc_resp.capab_info);
status = le_to_host16(mgmt->u.assoc_resp.status_code);
aid = le_to_host16(mgmt->u.assoc_resp.aid);
@ -340,8 +346,6 @@ static void rx_mgmt_assoc_resp(struct wlantest *wt, const u8 *data, size_t len)
if (status == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY) {
struct ieee802_11_elems elems;
const u8 *ies = mgmt->u.assoc_resp.variable;
size_t ies_len = len - (mgmt->u.assoc_resp.variable - data);
if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) ==
ParseFailed) {
add_note(wt, MSG_INFO, "Failed to parse IEs in "
@ -382,6 +386,16 @@ static void rx_mgmt_assoc_resp(struct wlantest *wt, const u8 *data, size_t len)
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE3;
}
if (wpa_ft_parse_ies(ies, ies_len, &parse) == 0) {
if (parse.r0kh_id) {
os_memcpy(bss->r0kh_id, parse.r0kh_id,
parse.r0kh_id_len);
bss->r0kh_id_len = parse.r0kh_id_len;
}
if (parse.r1kh_id)
os_memcpy(bss->r1kh_id, parse.r1kh_id, FT_R1KH_ID_LEN);
}
}

4
wlantest/wlantest.h
View file

@ -151,6 +151,10 @@ struct wlantest_bss {
u8 ipn[6][6];
u32 counters[NUM_WLANTEST_BSS_COUNTER];
struct dl_list tdls; /* struct wlantest_tdls */
u8 mdid[2];
u8 r0kh_id[FT_R0KH_ID_MAX_LEN];
size_t r0kh_id_len;
u8 r1kh_id[FT_R1KH_ID_LEN];
};
struct wlantest_radius {