diff options
| author | Marcel Holtmann <marcel@holtmann.org> | 2015-01-27 16:04:33 -0800 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-01-28 21:26:21 +0100 |
| commit | aa5b03456500b57ab30313affa822d4cd90e2ab2 (patch) | |
| tree | b76f4ced72a0eadceac228a29446f983b28479c4 | |
| parent | a83ed81ef5881445d96120bea2032f72884fe038 (diff) | |
Bluetooth: Check for P-256 OOB values in Secure Connections Only mode
If Secure Connections Only mode has been enabled, the it is important
to check that OOB data for P-256 values is provided. In case it is not,
then tell the remote side that no OOB data is present.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
| -rw-r--r-- | net/bluetooth/hci_event.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 8ed8516b18c7..00c160634e7b 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -36,6 +36,9 @@ #include "amp.h" #include "smp.h" +#define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ + "\x00\x00\x00\x00\x00\x00\x00\x00" + /* Handle HCI Event packets */ static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb) @@ -3864,6 +3867,16 @@ static u8 bredr_oob_data_present(struct hci_conn *conn) if (!data) return 0x00; + /* When Secure Connections Only mode is enabled, then the P-256 + * values are required. If they are not available, then do not + * declare that OOB data is present. + */ + if (bredr_sc_enabled(hdev) && + test_bit(HCI_SC_ONLY, &hdev->dev_flags) && + (!memcmp(data->rand256, ZERO_KEY, 16) || + !memcmp(data->hash256, ZERO_KEY, 16))) + return 0x00; + if (conn->out || test_bit(HCI_CONN_REMOTE_OOB, &conn->flags)) return 0x01; |