DGNum/hostapd
6
0
Fork 0
Code Issues Pull requests 1 Projects Releases Packages Wiki Activity Actions

FILS: Fix PMK and PMKID derivation from ERP

Browse source 
This adds helper functions for deriving PMK and PMKID from ERP exchange
in FILS shared key authentication as defined in IEEE Std 802.11ai-2016,
12.12.2.5.2 (PMKSA key derivation with FILS authentication). These
functions is used to fix PMK and PMKID derivation which were previously
using the rMSK directly as PMK instead of following the FILS protocol to
derive PMK with HMAC from nonces and rMSK.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2017-01-13 21:06:21 +02:00 • committed by Jouni Malinen
parent ef495c78dd
commit fcd3d6ce32
5 changed files with 121 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

5
src/common/wpa_common.h
View file

@ -330,6 +330,11 @@ int wpa_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const char *label,
const u8 *addr1, const u8 *addr2,
const u8 *nonce1, const u8 *nonce2,
struct wpa_ptk *ptk, int akmp, int cipher);
int fils_rmsk_to_pmk(int akmp, const u8 *rmsk, size_t rmsk_len,
const u8 *snonce, const u8 *anonce, const u8 *dh_ss,
size_t dh_ss_len, u8 *pmk, size_t *pmk_len);
int fils_pmkid_erp(int akmp, const u8 *reauth, size_t reauth_len,
u8 *pmkid);
int fils_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const u8 *spa, const u8 *aa,
const u8 *snonce, const u8 *anonce, struct wpa_ptk *ptk,
u8 *ick, size_t *ick_len, int akmp, int cipher);