/*---------------------------------------------------------------------------*/
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
init(void)
{
cmd_broker_init();
#if AKES_NBR_WITH_GROUP_KEYS
csprng_rand(adaptivesec_group_key, AKES_NBR_KEY_LEN);
#endif /* AKES_NBR_WITH_GROUP_KEYS */
akes_nbr_init();
ADAPTIVESEC_STRATEGY.init();
akes_trickle_start();
}
/*---------------------------------------------------------------------------*/
static void
change_hello_challenge(void)
{
csprng_rand(hello_challenge, AKES_NBR_CHALLENGE_LEN);
}
