From 882fafad71a4bac8e8a2445dfb08c38a71b4eef1 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Mon, 16 Mar 2015 11:45:43 +0200 Subject: [PATCH] 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 Signed-off-by: Marcel Holtmann --- net/bluetooth/smp.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index f0c5c2827372..1cc15de6ff1e 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -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); -- 2.39.5