/*---------------------------------------------------------------------------*/
static void
send_broadcast(mac_callback_t sent, void *ptr)
{
struct queuebuf *qb;
qb = queuebuf_new_from_packetbuf();
if(!qb || (NETSTACK_FRAMER.create() < 0)) {
PRINTF("coresec-strategy: Did not send broadcast\n");
if(qb) {
queuebuf_free(qb);
}
sent(ptr, MAC_TX_ERR, 0);
return;
}
prepare_announce();
adaptivesec_send_command_frame();
watchdog_periodic();
queuebuf_to_packetbuf(qb);
queuebuf_free(qb);
#if WITH_BROADCAST_ENCRYPTION
{
uint8_t ignore[ADAPTIVESEC_BROADCAST_MIC_LEN];
if(packetbuf_attr(PACKETBUF_ATTR_SECURITY_LEVEL) & (1 << 2)) {
adaptivesec_aead(adaptivesec_group_key, 1, ignore, 1);
}
}
#endif /* WITH_BROADCAST_ENCRYPTION */
NETSTACK_MAC.send(sent, ptr);
}
/*---------------------------------------------------------------------------*/
static void
send_helloack(void *ptr)
{
struct akes_nbr_entry *entry;
uint8_t challenges[2 * AKES_NBR_CHALLENGE_LEN];
uint8_t *secret;
PRINTF("akes: Sending HELLOACK\n");
entry = (struct akes_nbr_entry *)ptr;
akes_nbr_copy_challenge(challenges, entry->tentative->challenge);
csprng_rand(challenges + AKES_NBR_CHALLENGE_LEN, AKES_NBR_CHALLENGE_LEN);
akes_nbr_copy_challenge(entry->tentative->challenge, challenges + AKES_NBR_CHALLENGE_LEN);
/* write payload */
prepare_update_command(entry->permanent ? AKES_HELLOACK_P_IDENTIFIER : AKES_HELLOACK_IDENTIFIER,
entry,
AKES_NBR_TENTATIVE);
/* generate pairwise key */
secret = AKES_SCHEME.get_secret_with_hello_sender(akes_nbr_get_addr(entry));
if(!secret) {
PRINTF("akes: No secret with HELLO sender\n");
return;
}
generate_pairwise_key(challenges, secret);
akes_nbr_copy_key(entry->tentative->tentative_pairwise_key, challenges);
adaptivesec_send_command_frame();
}
/*---------------------------------------------------------------------------*/
static void
send_broadcast(mac_callback_t sent, void *ptr)
{
struct queuebuf *qb;
#if ANTI_REPLAY_WITH_SUPPRESSION
uint16_t frame_counter_bytes_0_1;
uint16_t frame_counter_bytes_2_3;
uint8_t seqno;
frame_counter_bytes_0_1 = packetbuf_attr(PACKETBUF_ATTR_FRAME_COUNTER_BYTES_0_1);
frame_counter_bytes_2_3 = packetbuf_attr(PACKETBUF_ATTR_FRAME_COUNTER_BYTES_2_3);
seqno = packetbuf_attr(PACKETBUF_ATTR_MAC_SEQNO);
adaptivesec_add_security_header(NULL);
#endif /* ANTI_REPLAY_WITH_SUPPRESSION */
qb = queuebuf_new_from_packetbuf();
if(!qb || (NETSTACK_FRAMER.create() < 0)) {
PRINTF("coresec-strategy: Did not send broadcast\n");
if(qb) {
queuebuf_free(qb);
}
sent(ptr, MAC_TX_ERR, 0);
return;
}
prepare_announce();
#if ANTI_REPLAY_WITH_SUPPRESSION
packetbuf_set_attr(PACKETBUF_ATTR_FRAME_COUNTER_BYTES_0_1, frame_counter_bytes_0_1);
packetbuf_set_attr(PACKETBUF_ATTR_FRAME_COUNTER_BYTES_2_3, frame_counter_bytes_2_3);
packetbuf_set_attr(PACKETBUF_ATTR_MAC_SEQNO, seqno);
#endif /* ANTI_REPLAY_WITH_SUPPRESSION */
adaptivesec_send_command_frame();
watchdog_periodic();
queuebuf_to_packetbuf(qb);
queuebuf_free(qb);
#if WITH_BROADCAST_ENCRYPTION
{
uint8_t ignore[ADAPTIVESEC_BROADCAST_MIC_LEN];
if(adaptivesec_get_sec_lvl() & (1 << 2)) {
adaptivesec_aead(adaptivesec_group_key, 1, ignore, 1);
}
}
#endif /* WITH_BROADCAST_ENCRYPTION */
NETSTACK_MAC.send(sent, ptr);
}