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Bluetooth: SMP: Add random PDU handling in LE SC

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Allows to verify remote confirmation number.

Change-Id: I964533ce29e3a2862361642d43ee9dee4b204b11
Signed-off-by: Szymon Janc <ext.szymon.janc@tieto.com>
This commit is contained in:
Szymon Janc 2015-10-28 13:25:44 +01:00 • committed by Anas Nashif
commit 41187cee88
1 changed files with 41 additions and 0 deletions
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41
net/bluetooth/smp.c
View file

@ -1215,6 +1215,43 @@ static uint8_t get_encryption_key_size(struct bt_smp *smp)
return min(req->max_key_size, rsp->max_key_size);
}
static uint8_t sc_smp_pairing_random(struct bt_smp *smp, struct net_buf *buf)
{
BT_DBG("\n");
/* TODO */
if (smp->method != JUST_WORKS) {
return BT_SMP_ERR_UNSPECIFIED;
}
#if defined(CONFIG_BLUETOOTH_CENTRAL)
if (smp->chan.conn->role == BT_HCI_ROLE_MASTER) {
uint8_t cfm[16];
int err;
err = smp_f4(smp->pkey, bt_dev.pkey, smp->rrnd, 0, cfm);
if (err) {
return BT_SMP_ERR_UNSPECIFIED;
}
BT_DBG("pcnf %s cfm %s\n", h(smp->pcnf, 16), h(cfm, 16));
if (memcmp(smp->pcnf, cfm, 16)) {
return BT_SMP_ERR_CONFIRM_FAILED;
}
atomic_set_bit(&smp->allowed_cmds, BT_SMP_DHKEY_CHECK);
return BT_SMP_ERR_UNSPECIFIED;
}
#endif /* CONFIG_BLUETOOTH_CENTRAL */
#if defined(CONFIG_BLUETOOTH_PERIPHERAL)
atomic_set_bit(&smp->allowed_cmds, BT_SMP_DHKEY_CHECK);
smp_send_pairing_random(smp);
#endif /* CONFIG_BLUETOOTH_PERIPHERAL */
return 0;
}
static uint8_t smp_pairing_random(struct bt_smp *smp, struct net_buf *buf)
{
struct bt_conn *conn = smp->chan.conn;
@ -1227,6 +1264,10 @@ static uint8_t smp_pairing_random(struct bt_smp *smp, struct net_buf *buf)
memcpy(smp->rrnd, req->val, sizeof(smp->rrnd));
if (atomic_test_bit(&smp->flags, SMP_FLAG_SC)) {
return sc_smp_pairing_random(smp, buf);
}
err = smp_c1(smp->tk, smp->rrnd, smp->preq, smp->prsp,
&conn->le.init_addr, &conn->le.resp_addr, cfm);
if (err) {