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Bluetooth: Require authentication if MITM protection is requested

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The HIGH security level requires a 16 digit pin code for non-SSP
bondings. Sometimes this requirement is not acceptable and we still
want protection againts MITM attacks (which is something that the
MEDIUM security level doesn't provide), for that we should allow
another way to request authentication without using the HIGH security
level.

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 2011-09-02 14:51:20 -03:00 committed by Gustavo F. Padovan
parent 8aab47574a
commit e9bf2bf03e
1 changed files with 3 additions and 2 deletions
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5
net/bluetooth/hci_event.c
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@ -1103,9 +1103,10 @@ static int hci_outgoing_auth_needed(struct hci_dev *hdev,
return 0;
/* Only request authentication for SSP connections or non-SSP
* devices with sec_level HIGH */
* devices with sec_level HIGH or if MITM protection is requested */
if (!(hdev->ssp_mode > 0 && conn->ssp_mode > 0) &&
conn->pending_sec_level != BT_SECURITY_HIGH)
conn->pending_sec_level != BT_SECURITY_HIGH &&
!(conn->auth_type & 0x01))
return 0;
return 1;