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mesh: Support variable length TX MGTK

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This is an initial step in supporting multiple cipher suites.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2016-06-18 14:39:43 +03:00
parent b02f4d058c
commit 696f792320
2 changed files with 8 additions and 3 deletions
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8
wpa_supplicant/mesh_rsn.c
View File

@ -173,7 +173,8 @@ static int __mesh_rsn_auth_init(struct mesh_rsn *rsn, const u8 *addr,
} }
/* TODO: support rekeying */ /* TODO: support rekeying */
if (random_get_bytes(rsn->mgtk, 16) < 0) rsn->mgtk_len = wpa_cipher_key_len(WPA_CIPHER_CCMP);
if (random_get_bytes(rsn->mgtk, rsn->mgtk_len) < 0)
return -1; return -1;
/* group mgmt */ /* group mgmt */
@ -181,8 +182,10 @@ static int __mesh_rsn_auth_init(struct mesh_rsn *rsn, const u8 *addr,
seq, sizeof(seq), rsn->mgtk, sizeof(rsn->mgtk)); seq, sizeof(seq), rsn->mgtk, sizeof(rsn->mgtk));
/* group privacy / data frames */ /* group privacy / data frames */
wpa_hexdump_key(MSG_DEBUG, "mesh: Own TX MGTK",
rsn->mgtk, rsn->mgtk_len);
wpa_drv_set_key(rsn->wpa_s, WPA_ALG_CCMP, NULL, 1, 1, wpa_drv_set_key(rsn->wpa_s, WPA_ALG_CCMP, NULL, 1, 1,
seq, sizeof(seq), rsn->mgtk, sizeof(rsn->mgtk)); seq, sizeof(seq), rsn->mgtk, rsn->mgtk_len);
return 0; return 0;
} }
@ -191,6 +194,7 @@ static int __mesh_rsn_auth_init(struct mesh_rsn *rsn, const u8 *addr,
static void mesh_rsn_deinit(struct mesh_rsn *rsn) static void mesh_rsn_deinit(struct mesh_rsn *rsn)
{ {
os_memset(rsn->mgtk, 0, sizeof(rsn->mgtk)); os_memset(rsn->mgtk, 0, sizeof(rsn->mgtk));
rsn->mgtk_len = 0;
if (rsn->auth) if (rsn->auth)
wpa_deinit(rsn->auth); wpa_deinit(rsn->auth);
} }

3
wpa_supplicant/mesh_rsn.h
View File

@ -12,7 +12,8 @@
struct mesh_rsn { struct mesh_rsn {
struct wpa_supplicant *wpa_s; struct wpa_supplicant *wpa_s;
struct wpa_authenticator *auth; struct wpa_authenticator *auth;
u8 mgtk[16]; u8 mgtk[WPA_TK_MAX_LEN];
size_t mgtk_len;
#ifdef CONFIG_SAE #ifdef CONFIG_SAE
struct wpabuf *sae_token; struct wpabuf *sae_token;
int sae_group_index; int sae_group_index;