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FILS: Enable SHA256 KDF even without PMF/SAE in the build

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While it is unlikely that FILS would be used without PMF or SAE in the
build, it is possible to generate such a build and as such, it would be
good for the KDF selection to work properly. Add CONFIG_FILS as an
independent condition for the SHA256-based KDF. Previously, this
combination would have resulted in failure to derive keys and terminated
key management exchange.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2018-04-23 18:25:59 +03:00 committed by Jouni Malinen
parent 1baa130bd0
commit 2598e69303
1 changed files with 3 additions and 3 deletions
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6
src/common/wpa_common.c
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@ -382,14 +382,14 @@ int wpa_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const char *label,
return -1;
#endif /* CONFIG_SUITEB192 || CONFIG_FILS */
} else if (wpa_key_mgmt_sha256(akmp) || akmp == WPA_KEY_MGMT_OWE) {
#if defined(CONFIG_IEEE80211W) || defined(CONFIG_SAE)
#if defined(CONFIG_IEEE80211W) || defined(CONFIG_SAE) || defined(CONFIG_FILS)
wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA256)");
if (sha256_prf(pmk, pmk_len, label, data, sizeof(data),
tmp, ptk_len) < 0)
return -1;
#else /* CONFIG_IEEE80211W or CONFIG_SAE */
#else /* CONFIG_IEEE80211W or CONFIG_SAE or CONFIG_FILS */
return -1;
#endif /* CONFIG_IEEE80211W or CONFIG_SAE */
#endif /* CONFIG_IEEE80211W or CONFIG_SAE or CONFIG_FILS */
#ifdef CONFIG_DPP
} else if (akmp == WPA_KEY_MGMT_DPP && pmk_len == 32) {
wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA256)");