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EAPOL: Update PMK length in EAPOL callback to support longer keys

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With introduction of newer AKMs, there is a need to update the PMK
length plumbed for the driver based 4-way handshake. To support this,
the current update the PMK length to 48, if the key management type uses
SHA-384. This is needed, e.g., for SUITE-B-192.

Signed-off-by: Vinayak Yadawad <vinayak.yadawad@broadcom.com>
This commit is contained in:
Vinayak Yadawad 2022-06-30 09:38:14 +05:30 committed by Jouni Malinen
parent c80dc69408
commit 909fa448e0
1 changed files with 7 additions and 3 deletions
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10
wpa_supplicant/wpas_glue.c
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@ -286,7 +286,7 @@ static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol,
{
struct wpa_supplicant *wpa_s = ctx;
int res, pmk_len;
u8 pmk[PMK_LEN];
u8 pmk[PMK_LEN_MAX];
wpa_printf(MSG_DEBUG, "EAPOL authentication completed - result=%s",
result_str(result));
@ -326,7 +326,11 @@ static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol,
wpa_printf(MSG_DEBUG, "Configure PMK for driver-based RSN 4-way "
"handshake");
pmk_len = PMK_LEN;
if (wpa_key_mgmt_sha384(wpa_s->key_mgmt))
pmk_len = PMK_LEN_SUITE_B_192;
else
pmk_len = PMK_LEN;
if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
#ifdef CONFIG_IEEE80211R
u8 buf[2 * PMK_LEN];
@ -341,7 +345,7 @@ static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol,
res = -1;
#endif /* CONFIG_IEEE80211R */
} else {
res = eapol_sm_get_key(eapol, pmk, PMK_LEN);
res = eapol_sm_get_key(eapol, pmk, pmk_len);
if (res) {
/*
* EAP-LEAP is an exception from other EAP methods: it