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DPP2: Add E-id in Reconfig Announcement

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Add an encrypted Enrollee identifier into Reconfig Announcement frames
and decrypt that on the Configurator side. The actual E-id value is
currently not used for anything, but it can be used in the future to
provide better control over reconfiguration.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2020-08-06 19:47:28 +03:00 • committed by Jouni Malinen
parent ad2119cbc6
commit c6d0e5a93d
8 changed files with 314 additions and 14 deletions
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10
src/ap/dpp_hostapd.c
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@ -1235,8 +1235,8 @@ hostapd_dpp_rx_reconfig_announcement(struct hostapd_data *hapd, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len,
unsigned int freq)
{
const u8 *csign_hash, *fcgroup;
u16 csign_hash_len, fcgroup_len;
const u8 *csign_hash, *fcgroup, *a_nonce, *e_id;
u16 csign_hash_len, fcgroup_len, a_nonce_len, e_id_len;
struct dpp_configurator *conf;
struct dpp_authentication *auth;
unsigned int wait_time, max_wait_time;
@ -1282,8 +1282,12 @@ hostapd_dpp_rx_reconfig_announcement(struct hostapd_data *hapd, const u8 *src,
group = WPA_GET_LE16(fcgroup);
wpa_printf(MSG_DEBUG, "DPP: Enrollee finite cyclic group: %u", group);
a_nonce = dpp_get_attr(buf, len, DPP_ATTR_A_NONCE, &a_nonce_len);
e_id = dpp_get_attr(buf, len, DPP_ATTR_E_PRIME_ID, &e_id_len);
auth = dpp_reconfig_init(hapd->iface->interfaces->dpp, hapd->msg_ctx,
conf, freq, group);
conf, freq, group, a_nonce, a_nonce_len,
e_id, e_id_len);
if (!auth)
return;
hostapd_dpp_set_testing_options(hapd, auth);