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authorVinicius Costa Gomes <vinicius.gomes@openbossa.org>2011-07-08 01:59:40 +0400
committerGustavo F. Padovan <padovan@profusion.mobi>2011-07-09 00:37:12 +0400
commite7e62c8592484f79469312fc694d2995918aa152 (patch)
treec5474bd6a209d7024817e2ce5650424c03470b80 /net/bluetooth
parent16b908396fbf1be49d417ffdb4a8b41c8c8cb670 (diff)
downloadlinux-e7e62c8592484f79469312fc694d2995918aa152.tar.xz
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.c23
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;