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Bluetooth: Fix encryption key size handling for LTKs

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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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>
This commit is contained in:
Johan Hedberg 2015-06-08 18:14:39 +03:00 • committed by Marcel Holtmann
commit 8b76ce34c4
4 changed files with 8 additions and 16 deletions
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2
include/net/bluetooth/hci_core.h
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@ -1408,7 +1408,7 @@ void mgmt_smp_complete(struct hci_conn *conn, bool complete);
u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
u16 to_multiplier);
void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
__u8 ltk[16]);
__u8 ltk[16], __u8 key_size);
void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
u8 *bdaddr_type);