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wlantest: Fix EAPOL-Key Key Data decryption for rekey case

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KEK from TPTK needs to be used instead of from PTK when processing
rekeying case similarly to what was already done with KCK.

Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2011-12-22 16:39:17 +02:00
parent 3b655312d4
commit 3c56f0e275
1 changed files with 4 additions and 2 deletions
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6
wlantest/rx_eapol.c
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@ -417,7 +417,7 @@ static void rx_data_eapol_key_3_of_4(struct wlantest *wt, const u8 *dst,
struct wlantest_sta *sta;
const struct ieee802_1x_hdr *eapol;
const struct wpa_eapol_key *hdr;
const u8 *key_data, *kck;
const u8 *key_data, *kck, *kek;
int recalc = 0;
u16 key_info, ver;
u8 *decrypted_buf = NULL;
@ -454,10 +454,12 @@ static void rx_data_eapol_key_3_of_4(struct wlantest *wt, const u8 *dst,
return;
}
kek = sta->ptk.kek;
kck = sta->ptk.kck;
if (sta->tptk_set) {
wpa_printf(MSG_DEBUG, "Use TPTK for validation EAPOL-Key MIC");
kck = sta->tptk.kck;
kek = sta->tptk.kek;
}
if (check_mic(kck, key_info & WPA_KEY_INFO_TYPE_MASK, data, len) < 0) {
wpa_printf(MSG_INFO, "Mismatch in EAPOL-Key 3/4 MIC");
@ -474,7 +476,7 @@ static void rx_data_eapol_key_3_of_4(struct wlantest *wt, const u8 *dst,
decrypted_len = WPA_GET_BE16(hdr->key_data_length);
} else {
ver = key_info & WPA_KEY_INFO_TYPE_MASK;
decrypted_buf = decrypt_eapol_key_data(sta->ptk.kek, ver, hdr,
decrypted_buf = decrypt_eapol_key_data(kek, ver, hdr,
&decrypted_len);
if (decrypted_buf == NULL) {
wpa_printf(MSG_INFO, "Failed to decrypt EAPOL-Key Key "