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Clear last set keys (for testing purposes) from memory explicitly

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This makes it easier to scan process memory for key information that is
not supposed to remain there after the last use.

Signed-off-by: Jouni Malinen <quic_jouni@quicinc.com>
This commit is contained in:
Jouni Malinen 2022-02-26 01:10:32 +02:00 committed by Jouni Malinen
parent 6c850a1c06
commit af1f0694e1
2 changed files with 7 additions and 0 deletions
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1
src/ap/sta_info.c
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@ -410,6 +410,7 @@ void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
#ifdef CONFIG_TESTING_OPTIONS
os_free(sta->sae_postponed_commit);
forced_memzero(sta->last_tk, WPA_TK_MAX_LEN);
#endif /* CONFIG_TESTING_OPTIONS */
os_free(sta);

6
src/ap/wpa_auth_glue.c
View file

@ -1631,4 +1631,10 @@ void hostapd_deinit_wpa(struct hostapd_data *hapd)
hapd->l2 = NULL;
hostapd_wpa_unregister_ft_oui(hapd);
#endif /* CONFIG_IEEE80211R_AP */
#ifdef CONFIG_TESTING_OPTIONS
forced_memzero(hapd->last_gtk, WPA_GTK_MAX_LEN);
forced_memzero(hapd->last_igtk, WPA_IGTK_MAX_LEN);
forced_memzero(hapd->last_bigtk, WPA_BIGTK_MAX_LEN);
#endif /* CONFIG_TESTING_OPTIONS */
}