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DPP: Support retrieving of configurator's private key

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To retain configurator information across hostapd/wpa_supplicant
restart, private key need to be maintained to generate a valid pair of
authentication keys (connector, netaccess_key, csign) for new enrollees
in the network.

Add a DPP_CONFIGURATOR_GET_KEY control interface API through which the
private key of an existing configurator can be fetched.

Command format:
DPP_CONFIGURATOR_GET_KEY <configurator_id>

The output from this command can then be used with
"DPP_CONFIGURATOR_ADD key=<hexdump>" to create the same key again.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Purushottam Kushwaha 2018-03-16 15:34:21 +05:30 • committed by Jouni Malinen
parent 4bc801ab42
commit 8179ae3a2a
10 changed files with 83 additions and 0 deletions
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13
src/ap/dpp_hostapd.c
View file

@ -1881,6 +1881,19 @@ int hostapd_dpp_configurator_sign(struct hostapd_data *hapd, const char *cmd)
}
int hostapd_dpp_configurator_get_key(struct hostapd_data *hapd, unsigned int id,
char *buf, size_t buflen)
{
struct dpp_configurator *conf;
conf = hostapd_dpp_configurator_get_id(hapd, id);
if (!conf)
return -1;
return dpp_configurator_get_key(conf, buf, buflen);
}
int hostapd_dpp_pkex_add(struct hostapd_data *hapd, const char *cmd)
{
struct dpp_bootstrap_info *own_bi;

2
src/ap/dpp_hostapd.h
View file

@ -30,6 +30,8 @@ void hostapd_dpp_gas_status_handler(struct hostapd_data *hapd, int ok);
int hostapd_dpp_configurator_add(struct hostapd_data *hapd, const char *cmd);
int hostapd_dpp_configurator_remove(struct hostapd_data *hapd, const char *id);
int hostapd_dpp_configurator_sign(struct hostapd_data *hapd, const char *cmd);
int hostapd_dpp_configurator_get_key(struct hostapd_data *hapd, unsigned int id,
char *buf, size_t buflen);
int hostapd_dpp_pkex_add(struct hostapd_data *hapd, const char *cmd);
int hostapd_dpp_pkex_remove(struct hostapd_data *hapd, const char *id);
void hostapd_dpp_stop(struct hostapd_data *hapd);