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DPP: Allow PKEX x/X and y/Y keypairs to be overridden

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This is for testing purposes to allow a test vector with specific values
to be generated.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2017-11-24 01:41:50 +02:00 committed by Jouni Malinen
parent d722c50d0a
commit acc555f9e6
3 changed files with 44 additions and 0 deletions
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30
src/common/dpp.c
View file

@ -32,6 +32,8 @@
enum dpp_test_behavior dpp_test = DPP_TEST_DISABLED;
u8 dpp_pkex_own_mac_override[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
u8 dpp_pkex_peer_mac_override[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
u8 dpp_pkex_ephemeral_key_override[600];
size_t dpp_pkex_ephemeral_key_override_len = 0;
static int dpp_test_gen_invalid_key(struct wpabuf *msg,
const struct dpp_curve_params *curve);
@ -6104,7 +6106,21 @@ static struct wpabuf * dpp_pkex_build_exchange_req(struct dpp_pkex *pkex)
goto fail;
/* Generate a random ephemeral keypair x/X */
#ifdef CONFIG_TESTING_OPTIONS
if (dpp_pkex_ephemeral_key_override_len) {
const struct dpp_curve_params *tmp_curve;
wpa_printf(MSG_INFO,
"DPP: TESTING - override ephemeral key x/X");
pkex->x = dpp_set_keypair(&tmp_curve,
dpp_pkex_ephemeral_key_override,
dpp_pkex_ephemeral_key_override_len);
} else {
pkex->x = dpp_gen_keypair(curve);
}
#else /* CONFIG_TESTING_OPTIONS */
pkex->x = dpp_gen_keypair(curve);
#endif /* CONFIG_TESTING_OPTIONS */
if (!pkex->x)
goto fail;
@ -6552,7 +6568,21 @@ struct dpp_pkex * dpp_pkex_rx_exchange_req(void *msg_ctx,
goto fail;
/* Generate a random ephemeral keypair y/Y */
#ifdef CONFIG_TESTING_OPTIONS
if (dpp_pkex_ephemeral_key_override_len) {
const struct dpp_curve_params *tmp_curve;
wpa_printf(MSG_INFO,
"DPP: TESTING - override ephemeral key y/Y");
pkex->y = dpp_set_keypair(&tmp_curve,
dpp_pkex_ephemeral_key_override,
dpp_pkex_ephemeral_key_override_len);
} else {
pkex->y = dpp_gen_keypair(curve);
}
#else /* CONFIG_TESTING_OPTIONS */
pkex->y = dpp_gen_keypair(curve);
#endif /* CONFIG_TESTING_OPTIONS */
if (!pkex->y)
goto fail;

2
src/common/dpp.h
View file

@ -326,6 +326,8 @@ enum dpp_test_behavior {
extern enum dpp_test_behavior dpp_test;
extern u8 dpp_pkex_own_mac_override[ETH_ALEN];
extern u8 dpp_pkex_peer_mac_override[ETH_ALEN];
extern u8 dpp_pkex_ephemeral_key_override[600];
extern size_t dpp_pkex_ephemeral_key_override_len;
#endif /* CONFIG_TESTING_OPTIONS */
void dpp_bootstrap_info_free(struct dpp_bootstrap_info *info);

12
wpa_supplicant/ctrl_iface.c
View file

@ -621,6 +621,17 @@ static int wpa_supplicant_ctrl_iface_set(struct wpa_supplicant *wpa_s,
} else if (os_strcasecmp(cmd, "dpp_pkex_peer_mac_override") == 0) {
if (hwaddr_aton(value, dpp_pkex_peer_mac_override))
ret = -1;
} else if (os_strcasecmp(cmd, "dpp_pkex_ephemeral_key_override") == 0) {
size_t hex_len = os_strlen(value);
if (hex_len >
2 * sizeof(dpp_pkex_ephemeral_key_override))
ret = -1;
else if (hexstr2bin(value, dpp_pkex_ephemeral_key_override,
hex_len / 2))
ret = -1;
else
dpp_pkex_ephemeral_key_override_len = hex_len / 2;
#endif /* CONFIG_DPP */
#ifdef CONFIG_TESTING_OPTIONS
} else if (os_strcasecmp(cmd, "ext_mgmt_frame_handling") == 0) {
@ -7769,6 +7780,7 @@ static void wpa_supplicant_ctrl_iface_flush(struct wpa_supplicant *wpa_s)
wpa_s->dpp_resp_retry_time = 0;
os_memset(dpp_pkex_own_mac_override, 0, ETH_ALEN);
os_memset(dpp_pkex_peer_mac_override, 0, ETH_ALEN);
dpp_pkex_ephemeral_key_override_len = 0;
#endif /* CONFIG_DPP */
#ifdef CONFIG_TDLS