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FT: Add support for variable length PMK-R1 receiving in RRB 

SHA384-based FT AKM uses longer keys, so the RRB receive processing for
push and pull response messages needs to be able to accept variable
length PMK-R1.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2018-06-04 15:16:54 +03:00
parent a7968ea568
commit 3d9cd08410
1 changed files with 9 additions and 3 deletions
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12
src/ap/wpa_auth_ft.c
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@ -3578,6 +3578,7 @@ static int wpa_ft_rrb_rx_r1(struct wpa_authenticator *wpa_auth,
int expires_in;
int session_timeout;
struct vlan_description vlan;
size_t pmk_r1_len;
RRB_GET_AUTH(FT_RRB_R0KH_ID, r0kh_id, msgtype, -1);
wpa_hexdump(MSG_DEBUG, "FT: R0KH-ID", f_r0kh_id, f_r0kh_id_len);
@ -3656,8 +3657,13 @@ static int wpa_ft_rrb_rx_r1(struct wpa_authenticator *wpa_auth,
wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name",
f_pmk_r1_name, WPA_PMK_NAME_LEN);
RRB_GET(FT_RRB_PMK_R1, pmk_r1, msgtype, PMK_LEN);
wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", f_pmk_r1, PMK_LEN);
pmk_r1_len = PMK_LEN;
if (wpa_ft_rrb_get_tlv(plain, plain_len, FT_RRB_PMK_R1, &f_pmk_r1_len,
&f_pmk_r1) == 0 &&
(f_pmk_r1_len == PMK_LEN || f_pmk_r1_len == SHA384_MAC_LEN))
pmk_r1_len = f_pmk_r1_len;
RRB_GET(FT_RRB_PMK_R1, pmk_r1, msgtype, pmk_r1_len);
wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", f_pmk_r1, pmk_r1_len);
pairwise = WPA_GET_LE16(f_pairwise);
@ -3698,7 +3704,7 @@ static int wpa_ft_rrb_rx_r1(struct wpa_authenticator *wpa_auth,
session_timeout = 0;
wpa_printf(MSG_DEBUG, "FT: session_timeout %d", session_timeout);
if (wpa_ft_store_pmk_r1(wpa_auth, f_s1kh_id, f_pmk_r1, PMK_LEN,
if (wpa_ft_store_pmk_r1(wpa_auth, f_s1kh_id, f_pmk_r1, pmk_r1_len,
f_pmk_r1_name,
pairwise, &vlan, expires_in, session_timeout,
f_identity, f_identity_len, f_radius_cui,