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P2P2: Device Identity Key generation and storage in configuration

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Generate a random device identity key and save it to the config file.
Use the same identity key from config to derive DIRA for NAN SDF frames.

Signed-off-by: Shivani Baranwal <quic_shivbara@quicinc.com>
This commit is contained in:
Shivani Baranwal 2024-08-05 15:03:03 +05:30 committed by Jouni Malinen
parent 58ba550c53
commit bcab29a78c
4 changed files with 41 additions and 0 deletions
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3
wpa_supplicant/config.c
View file

@ -3095,6 +3095,7 @@ void wpa_config_free(struct wpa_config *config)
os_free(config->dpp_mud_url);
os_free(config->dpp_extra_conf_req_name);
os_free(config->dpp_extra_conf_req_value);
wpabuf_free(config->dik);
os_free(config);
}
@ -5486,6 +5487,8 @@ static const struct global_parse_data global_fields[] = {
{ FUNC(p2p_device_persistent_mac_addr), 0 },
{ INT(p2p_interface_random_mac_addr), 0 },
{ INT(p2p_6ghz_disable), 0 },
{ INT(dik_cipher), 0},
{ BIN(dik), 0 },
#endif /* CONFIG_P2P */
{ FUNC(country), CFG_CHANGED_COUNTRY },
{ INT(bss_max_count), 0 },

6
wpa_supplicant/config.h
View file

@ -1814,6 +1814,12 @@ struct wpa_config {
int mld_force_single_link;
#endif /* CONFIG_TESTING_OPTIONS */
/* Cipher version type */
int dik_cipher;
/* DevIK */
struct wpabuf *dik;
};

4
wpa_supplicant/config_file.c
View file

@ -1629,6 +1629,10 @@ static void wpa_config_write_global(FILE *f, struct wpa_config *config)
#endif /* CONFIG_TESTING_OPTIONS */
if (config->ft_prepend_pmkid)
fprintf(f, "ft_prepend_pmkid=%d\n", config->ft_prepend_pmkid);
if (config->dik) {
fprintf(f, "dik_cipher=%d\n", config->dik_cipher);
write_global_bin(f, "dik", config->dik);
}
}
#endif /* CONFIG_NO_CONFIG_WRITE */

28
wpa_supplicant/p2p_supplicant.c
View file

@ -5057,6 +5057,34 @@ int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
else
p2p.passphrase_len = 8;
if (wpa_s->conf->dik &&
wpabuf_len(wpa_s->conf->dik) <= DEVICE_IDENTITY_KEY_MAX_LEN) {
p2p.pairing_config.dik_cipher = wpa_s->conf->dik_cipher;
p2p.pairing_config.dik_len = wpabuf_len(wpa_s->conf->dik);
os_memcpy(p2p.pairing_config.dik_data,
wpabuf_head(wpa_s->conf->dik),
p2p.pairing_config.dik_len);
} else {
p2p.pairing_config.dik_cipher = DIRA_CIPHER_VERSION_128;
p2p.pairing_config.dik_len = DEVICE_IDENTITY_KEY_LEN;
if (os_get_random(p2p.pairing_config.dik_data,
p2p.pairing_config.dik_len) < 0)
return -1;
wpa_s->conf->dik =
wpabuf_alloc_copy(p2p.pairing_config.dik_data,
p2p.pairing_config.dik_len);
if (!wpa_s->conf->dik)
return -1;
wpa_s->conf->dik_cipher = p2p.pairing_config.dik_cipher;
if (wpa_s->conf->update_config &&
wpa_config_write(wpa_s->confname, wpa_s->conf))
wpa_printf(MSG_DEBUG,
"P2P: Failed to update configuration");
}
global->p2p = p2p_init(&p2p);
if (global->p2p == NULL)
return -1;