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DPP2: Extend wpa_pmk_to_ptk() to support extra Z.x component in context

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DPP allows Diffie-Hellman exchange to be used for PFS in PTK derivation.
This requires an additional Z.x (x coordinate of the DH shared secret)
to be passed to wpa_pmk_to_ptk(). This commit adds that to the function
and updates all the callers to pass NULL,0 for that part in preparation
of the DPP specific changes to start using this.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2019-03-17 22:02:06 +02:00 • committed by Jouni Malinen
parent 16a4e931f0
commit ecacd9ccd4
5 changed files with 32 additions and 13 deletions
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2
src/rsn_supp/wpa.c
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@ -542,7 +542,7 @@ static int wpa_derive_ptk(struct wpa_sm *sm, const unsigned char *src_addr,
return wpa_pmk_to_ptk(sm->pmk, sm->pmk_len, "Pairwise key expansion",
sm->own_addr, sm->bssid, sm->snonce,
key->key_nonce, ptk, sm->key_mgmt,
sm->pairwise_cipher);
sm->pairwise_cipher, NULL, 0);
}