diff options
| author | Johan Hedberg <johan.hedberg@intel.com> | 2015-06-08 18:14:39 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-06-09 09:09:06 +0200 |
| commit | 8b76ce34c43a569f981623485c1b6c700594678e (patch) | |
| tree | 3844c2f8bc50d978342a4a0fa5eb46b765a1aad5 /net/bluetooth/hci_conn.c | |
| parent | 2eeac871697ac24a77b6d7953bd711b490e83ac7 (diff) | |
Bluetooth: Fix encryption key size handling for LTKs
The encryption key size for LTKs is supposed to be applied only at the
moment of encryption. When generating a Link Key (using LE SC) from
the LTK the full non-shortened value should be used. This patch
modifies the code to always keep the full value around and only apply
the key size when passing the value to HCI.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/hci_conn.c')
| -rw-r--r-- | net/bluetooth/hci_conn.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index ee5e59839b02..2c48bf0b5afb 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -276,7 +276,7 @@ u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, } void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, - __u8 ltk[16]) + __u8 ltk[16], __u8 key_size) { struct hci_dev *hdev = conn->hdev; struct hci_cp_le_start_enc cp; @@ -288,7 +288,7 @@ void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, cp.handle = cpu_to_le16(conn->handle); cp.rand = rand; cp.ediv = ediv; - memcpy(cp.ltk, ltk, sizeof(cp.ltk)); + memcpy(cp.ltk, ltk, key_size); hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp); } |