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| author | Vinicius Costa Gomes <vinicius.gomes@openbossa.org> | 2011-07-07 18:59:40 -0300 |
|---|---|---|
| committer | Gustavo F. Padovan <padovan@profusion.mobi> | 2011-07-08 17:37:12 -0300 |
| commit | e7e62c8592484f79469312fc694d2995918aa152 (patch) | |
| tree | c5474bd6a209d7024817e2ce5650424c03470b80 /net/bluetooth | |
| parent | 16b908396fbf1be49d417ffdb4a8b41c8c8cb670 (diff) | |
| download | lwn-e7e62c8592484f79469312fc694d2995918aa152.tar.gz lwn-e7e62c8592484f79469312fc694d2995918aa152.zip | |
Bluetooth: Use the link key list to temporarily store the STK
With this we can use only one place to store all keys, without
need to use a field in the connection structure for this
purpose.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/smp.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index 600a70b95a00..6df51017df21 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -390,29 +390,36 @@ static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb) } if (conn->hcon->out) { + u8 stk[16], rand[8]; __le16 ediv; - u8 rand[8]; + + memset(rand, 0, sizeof(rand)); + ediv = 0; smp_s1(tfm, conn->tk, random, conn->prnd, key); - swap128(key, hcon->ltk); + swap128(key, stk); - memset(hcon->ltk + conn->smp_key_size, 0, + memset(stk + conn->smp_key_size, 0, SMP_MAX_ENC_KEY_SIZE - conn->smp_key_size); + hci_le_start_enc(hcon, ediv, rand, stk); + } else { + u8 stk[16], r[16], rand[8]; + __le16 ediv; + memset(rand, 0, sizeof(rand)); ediv = 0; - hci_le_start_enc(hcon, ediv, rand, hcon->ltk); - } else { - u8 r[16]; swap128(conn->prnd, r); smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(r), r); smp_s1(tfm, conn->tk, conn->prnd, random, key); - swap128(key, hcon->ltk); + swap128(key, stk); - memset(hcon->ltk + conn->smp_key_size, 0, + memset(stk + conn->smp_key_size, 0, SMP_MAX_ENC_KEY_SIZE - conn->smp_key_size); + + hci_add_ltk(conn->hcon->hdev, 0, conn->dst, ediv, rand, stk); } return 0; |