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Bluetooth: Add support for handling P-256 derived link keys 

Before being able to enable Secure Connections support, the core needs
to know on how to handle P-256 derived link keys. The difference between
authenticated and unauthenticated P-256 derived link keys is the same as
its P-192 counter parts.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2014-01-10 02:07:20 -08:00 committed by Johan Hedberg
parent 11015c7903
commit 66138ce8e5
2 changed files with 6 additions and 3 deletions
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6
net/bluetooth/hci_conn.c
View File

@ -802,12 +802,14 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
/* An authenticated combination key has sufficient security for any
security level. */
if (conn->key_type == HCI_LK_AUTH_COMBINATION_P192)
if (conn->key_type == HCI_LK_AUTH_COMBINATION_P192 ||
conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
goto encrypt;
/* An unauthenticated combination key has sufficient security for
security level 1 and 2. */
if (conn->key_type == HCI_LK_UNAUTH_COMBINATION_P192 &&
if ((conn->key_type == HCI_LK_UNAUTH_COMBINATION_P192 ||
conn->key_type == HCI_LK_UNAUTH_COMBINATION_P256) &&
(sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW))
goto encrypt;

3
net/bluetooth/hci_event.c
View File

@ -2633,7 +2633,8 @@ static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
if (conn) {
if (key->type == HCI_LK_UNAUTH_COMBINATION_P192 &&
if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
BT_DBG("%s ignoring unauthenticated key", hdev->name);
goto not_found;