Commit e9bf2bf0 authored Sep 02, 2011 by Vinicius Costa Gomes Committed by Gustavo Padovan Sep 21, 2011

Bluetooth: Require authentication if MITM protection is requested



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>

parent 8aab4757

net/bluetooth/hci_event.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -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;