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Bluetooth: Add support for storing the LTK 

Now when the LTK is received from the remote or generated it is stored,
so it can later be used.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Vinicius Costa Gomes 2011-07-07 18:59:39 -03:00 committed by Gustavo F. Padovan
parent 54790f73a3
commit 16b908396f
1 changed files with 14 additions and 6 deletions
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20
net/bluetooth/smp.c
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@ -496,18 +496,23 @@ int smp_conn_security(struct l2cap_conn *conn, __u8 sec_level)
static int smp_cmd_encrypt_info(struct l2cap_conn *conn, struct sk_buff *skb)
{
BT_DBG("conn %p", conn);
/* FIXME: store the ltk */
struct smp_cmd_encrypt_info *rp = (void *) skb->data;
skb_pull(skb, sizeof(*rp));
memcpy(conn->tk, rp->ltk, sizeof(conn->tk));
return 0;
}
static int smp_cmd_master_ident(struct l2cap_conn *conn, struct sk_buff *skb)
{
struct smp_cmd_pairing *paircmd = (void *) &conn->prsp[1];
u8 keydist = paircmd->init_key_dist;
struct smp_cmd_master_ident *rp = (void *) skb->data;
BT_DBG("keydist 0x%x", keydist);
/* FIXME: store ediv and rand */
skb_pull(skb, sizeof(*rp));
hci_add_ltk(conn->hcon->hdev, 1, conn->src, rp->ediv,
rp->rand, conn->tk);
smp_distribute_keys(conn, 1);
@ -632,6 +637,9 @@ int smp_distribute_keys(struct l2cap_conn *conn, __u8 force)
smp_send_cmd(conn, SMP_CMD_ENCRYPT_INFO, sizeof(enc), &enc);
hci_add_ltk(conn->hcon->hdev, 1, conn->dst, ediv,
ident.rand, enc.ltk);
ident.ediv = cpu_to_le16(ediv);
smp_send_cmd(conn, SMP_CMD_MASTER_IDENT, sizeof(ident), &ident);