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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>
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@ -95,7 +95,8 @@ struct smp_chan {
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u8 rrnd[16]; /* SMP Pairing Random (remote) */
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u8 pcnf[16]; /* SMP Pairing Confirm */
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u8 tk[16]; /* SMP Temporary Key */
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u8 rr[16];
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u8 rr[16]; /* Remote OOB ra/rb value */
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u8 lr[16]; /* Local OOB ra/rb value */
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u8 enc_key_size;
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u8 remote_key_dist;
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bdaddr_t id_addr;
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@ -1830,7 +1831,7 @@ static u8 sc_send_public_key(struct smp_chan *smp)
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memcpy(smp->local_pk, smp_dev->local_pk, 64);
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memcpy(smp->local_sk, smp_dev->local_sk, 32);
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memcpy(smp->rr, smp_dev->local_rr, 16);
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memcpy(smp->lr, smp_dev->local_rr, 16);
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if (smp_dev->debug_key)
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set_bit(SMP_FLAG_DEBUG_KEY, &smp->flags);
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@ -2634,6 +2635,8 @@ static int smp_cmd_dhkey_check(struct l2cap_conn *conn, struct sk_buff *skb)
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if (smp->method == REQ_PASSKEY || smp->method == DSP_PASSKEY)
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put_unaligned_le32(hcon->passkey_notify, r);
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else if (smp->method == REQ_OOB)
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memcpy(r, smp->lr, 16);
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err = smp_f6(smp->tfm_cmac, smp->mackey, smp->rrnd, smp->prnd, r,
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io_cap, remote_addr, local_addr, e);
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