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DPP: Add akm=sae and akm=psk+sae support in Enrollee role

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This allows DPP to be used for enrolling credentials for SAE networks in
addition to the legacy PSK (WPA-PSK) case. In addition, enable FT-PSK
and FT-SAE cases automatically.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2017-11-22 21:04:41 +02:00 committed by Jouni Malinen
parent af872d9d88
commit 5dd745b738
5 changed files with 67 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/ap/dpp_hostapd.c
View File

@ -711,6 +711,8 @@ static void hostapd_dpp_gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
}
wpa_msg(hapd->msg_ctx, MSG_INFO, DPP_EVENT_CONF_RECEIVED);
wpa_msg(hapd->msg_ctx, MSG_INFO, DPP_EVENT_CONFOBJ_AKM "%s",
dpp_akm_str(auth->akm));
if (auth->ssid_len)
wpa_msg(hapd->msg_ctx, MSG_INFO, DPP_EVENT_CONFOBJ_SSID "%s",
wpa_ssid_txt(auth->ssid, auth->ssid_len));

49
src/common/dpp.c
View File

@ -4517,6 +4517,11 @@ static int dpp_parse_cred_legacy(struct dpp_authentication *auth,
os_strlcpy(auth->passphrase, pass->string,
sizeof(auth->passphrase));
} else if (psk_hex && psk_hex->type == JSON_STRING) {
if (auth->akm == DPP_AKM_SAE) {
wpa_printf(MSG_DEBUG,
"DPP: Unexpected psk_hex with akm=sae");
return -1;
}
if (os_strlen(psk_hex->string) != PMK_LEN * 2 ||
hexstr2bin(psk_hex->string, auth->psk, PMK_LEN) < 0) {
wpa_printf(MSG_DEBUG, "DPP: Invalid psk_hex encoding");
@ -4530,6 +4535,12 @@ static int dpp_parse_cred_legacy(struct dpp_authentication *auth,
return -1;
}
if ((auth->akm == DPP_AKM_SAE || auth->akm == DPP_AKM_PSK_SAE) &&
!auth->passphrase[0]) {
wpa_printf(MSG_DEBUG, "DPP: No pass for sae found");
return -1;
}
return 0;
}
@ -5092,6 +5103,37 @@ fail:
}
const char * dpp_akm_str(enum dpp_akm akm)
{
switch (akm) {
case DPP_AKM_DPP:
return "dpp";
case DPP_AKM_PSK:
return "psk";
case DPP_AKM_SAE:
return "sae";
case DPP_AKM_PSK_SAE:
return "psk+sae";
default:
return "??";
}
}
static enum dpp_akm dpp_akm_from_str(const char *akm)
{
if (os_strcmp(akm, "psk") == 0)
return DPP_AKM_PSK;
if (os_strcmp(akm, "sae") == 0)
return DPP_AKM_SAE;
if (os_strcmp(akm, "psk+sae") == 0)
return DPP_AKM_PSK_SAE;
if (os_strcmp(akm, "dpp") == 0)
return DPP_AKM_DPP;
return DPP_AKM_UNKNOWN;
}
static int dpp_parse_conf_obj(struct dpp_authentication *auth,
const u8 *conf_obj, u16 conf_obj_len)
{
@ -5149,10 +5191,13 @@ static int dpp_parse_conf_obj(struct dpp_authentication *auth,
dpp_auth_fail(auth, "No cred::akm string value found");
goto fail;
}
if (os_strcmp(token->string, "psk") == 0) {
auth->akm = dpp_akm_from_str(token->string);
if (auth->akm == DPP_AKM_PSK || auth->akm == DPP_AKM_SAE ||
auth->akm == DPP_AKM_PSK_SAE) {
if (dpp_parse_cred_legacy(auth, cred) < 0)
goto fail;
} else if (os_strcmp(token->string, "dpp") == 0) {
} else if (auth->akm == DPP_AKM_DPP) {
if (dpp_parse_cred_dpp(auth, cred) < 0)
goto fail;
} else {

10
src/common/dpp.h
View File

@ -136,6 +136,14 @@ struct dpp_pkex {
unsigned int freq;
};
enum dpp_akm {
DPP_AKM_UNKNOWN,
DPP_AKM_DPP,
DPP_AKM_PSK,
DPP_AKM_SAE,
DPP_AKM_PSK_SAE
};
struct dpp_configuration {
u8 ssid[32];
size_t ssid_len;
@ -201,6 +209,7 @@ struct dpp_authentication {
char passphrase[64];
u8 psk[PMK_LEN];
int psk_set;
enum dpp_akm akm;
struct wpabuf *net_access_key;
os_time_t net_access_key_expiry;
struct wpabuf *c_sign_key;
@ -361,6 +370,7 @@ struct wpabuf * dpp_alloc_msg(enum dpp_public_action_frame_type type,
const u8 * dpp_get_attr(const u8 *buf, size_t len, u16 req_id, u16 *ret_len);
int dpp_check_attrs(const u8 *buf, size_t len);
int dpp_key_expired(const char *timestamp, os_time_t *expiry);
const char * dpp_akm_str(enum dpp_akm akm);
void dpp_configurator_free(struct dpp_configurator *conf);
struct dpp_configurator *
dpp_keygen_configurator(const char *curve, const u8 *privkey,

1
src/common/wpa_ctrl.h
View File

@ -160,6 +160,7 @@ extern "C" {
#define DPP_EVENT_CONF_RECEIVED "DPP-CONF-RECEIVED "
#define DPP_EVENT_CONF_SENT "DPP-CONF-SENT "
#define DPP_EVENT_CONF_FAILED "DPP-CONF-FAILED "
#define DPP_EVENT_CONFOBJ_AKM "DPP-CONFOBJ-AKM "
#define DPP_EVENT_CONFOBJ_SSID "DPP-CONFOBJ-SSID "
#define DPP_EVENT_CONFOBJ_PASS "DPP-CONFOBJ-PASS "
#define DPP_EVENT_CONFOBJ_PSK "DPP-CONFOBJ-PSK "

8
wpa_supplicant/dpp_supplicant.c
View File

@ -1108,7 +1108,13 @@ static struct wpa_ssid * wpas_dpp_add_network(struct wpa_supplicant *wpa_s,
}
if (!auth->connector) {
ssid->key_mgmt = WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_PSK_SHA256;
ssid->key_mgmt = 0;
if (auth->akm == DPP_AKM_PSK || auth->akm == DPP_AKM_PSK_SAE)
ssid->key_mgmt |= WPA_KEY_MGMT_PSK |
WPA_KEY_MGMT_PSK_SHA256 | WPA_KEY_MGMT_FT_PSK;
if (auth->akm == DPP_AKM_SAE || auth->akm == DPP_AKM_PSK_SAE)
ssid->key_mgmt |= WPA_KEY_MGMT_SAE |
WPA_KEY_MGMT_FT_SAE;
ssid->ieee80211w = 1;
if (auth->passphrase[0]) {
if (wpa_config_set_quoted(ssid, "psk",