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Bluetooth: Fix BR/EDR Link Key type when derived through LE SC 

We need to set the correct Link Key type based on the properties of the
LE SC pairing that it was derived from. If debug keys were used the type
should be a debug key, and the authenticated vs unauthenticated
information should be set on what kind of security level was reached.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2014-06-01 16:33:39 +03:00 committed by Marcel Holtmann
parent dddd3059e3
commit e3befab970
2 changed files with 28 additions and 3 deletions
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4
net/bluetooth/hci_core.c
View File

@ -3160,6 +3160,10 @@ static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn,
if (!conn)
return true;
/* BR/EDR key derived using SC from an LE link */
if (conn->type == LE_LINK)
return true;
/* Neither local nor remote side had no-bonding as requirement */
if (conn->auth_type > 0x01 && conn->remote_auth > 0x01)
return true;

27
net/bluetooth/smp.c
View File

@ -965,9 +965,30 @@ static void smp_notify_keys(struct l2cap_conn *conn)
}
if (smp->link_key) {
hci_add_link_key(hdev, smp->conn->hcon, &hcon->dst,
smp->link_key, HCI_LK_AUTH_COMBINATION_P256,
0, NULL);
struct link_key *key;
u8 type;
if (test_bit(SMP_FLAG_DEBUG_KEY, &smp->flags))
type = HCI_LK_DEBUG_COMBINATION;
else if (hcon->sec_level == BT_SECURITY_FIPS)
type = HCI_LK_AUTH_COMBINATION_P256;
else
type = HCI_LK_UNAUTH_COMBINATION_P256;
key = hci_add_link_key(hdev, smp->conn->hcon, &hcon->dst,
smp->link_key, type, 0, &persistent);
if (key) {
mgmt_new_link_key(hdev, key, persistent);
/* Don't keep debug keys around if the relevant
* flag is not set.
*/
if (!test_bit(HCI_KEEP_DEBUG_KEYS, &hdev->dev_flags) &&
key->type == HCI_LK_DEBUG_COMBINATION) {
list_del_rcu(&key->list);
kfree_rcu(key, rcu);
}
}
}
}