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Bluetooth: Fix local OOB data handling for SMP 

We need to store the local ra/rb value in order to verify the Check
value received from the remote. This patch adds a new 'lr' for the local
ra/rb value and makes sure it gets used when verifying the DHKey Check
PDU received from the remote.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2015-03-16 11:45:43 +02:00 committed by Marcel Holtmann
parent 8e4e2ee5d8
commit 882fafad71
1 changed files with 5 additions and 2 deletions
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7
net/bluetooth/smp.c
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@ -95,7 +95,8 @@ struct smp_chan {
u8 rrnd[16]; /* SMP Pairing Random (remote) */
u8 pcnf[16]; /* SMP Pairing Confirm */
u8 tk[16]; /* SMP Temporary Key */
u8 rr[16];
u8 rr[16]; /* Remote OOB ra/rb value */
u8 lr[16]; /* Local OOB ra/rb value */
u8 enc_key_size;
u8 remote_key_dist;
bdaddr_t id_addr;
@ -1830,7 +1831,7 @@ static u8 sc_send_public_key(struct smp_chan *smp)
memcpy(smp->local_pk, smp_dev->local_pk, 64);
memcpy(smp->local_sk, smp_dev->local_sk, 32);
memcpy(smp->rr, smp_dev->local_rr, 16);
memcpy(smp->lr, smp_dev->local_rr, 16);
if (smp_dev->debug_key)
set_bit(SMP_FLAG_DEBUG_KEY, &smp->flags);
@ -2634,6 +2635,8 @@ static int smp_cmd_dhkey_check(struct l2cap_conn *conn, struct sk_buff *skb)
if (smp->method == REQ_PASSKEY || smp->method == DSP_PASSKEY)
put_unaligned_le32(hcon->passkey_notify, r);
else if (smp->method == REQ_OOB)
memcpy(r, smp->lr, 16);
err = smp_f6(smp->tfm_cmac, smp->mackey, smp->rrnd, smp->prnd, r,
io_cap, remote_addr, local_addr, e);