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| author | Marcel Holtmann <marcel@holtmann.org> | 2014-02-27 16:00:28 -0800 |
|---|---|---|
| committer | Johan Hedberg <johan.hedberg@intel.com> | 2014-02-28 12:36:04 +0200 |
| commit | fe39c7b2dacf7fd4dcddc26704d01315ab92b7cb (patch) | |
| tree | 9eb0ab5c8daa3432201c6e0219468cd851669b06 /net/bluetooth/smp.c | |
| parent | a3172b7eb4a2719711187cfca12097d2326e85a7 (diff) | |
| download | linux-stable-fe39c7b2dacf7fd4dcddc26704d01315ab92b7cb.tar.gz linux-stable-fe39c7b2dacf7fd4dcddc26704d01315ab92b7cb.tar.bz2 linux-stable-fe39c7b2dacf7fd4dcddc26704d01315ab92b7cb.zip | |
Bluetooth: Use __le64 type for LE random numbers
The random numbers in Bluetooth Low Energy are 64-bit numbers and should
also be little endian since the HCI specification is little endian.
Change the whole Low Energy pairing to use __le64 instead of a byte
array.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Diffstat (limited to 'net/bluetooth/smp.c')
| -rw-r--r-- | net/bluetooth/smp.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index 0de98fe23330..99abffcaf16b 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -517,11 +517,9 @@ static void random_work(struct work_struct *work) } if (hcon->out) { - u8 stk[16], rand[8]; - __le16 ediv; - - memset(rand, 0, sizeof(rand)); - ediv = 0; + u8 stk[16]; + __le64 rand = 0; + __le16 ediv = 0; smp_s1(tfm, smp->tk, smp->rrnd, smp->prnd, key); swap128(key, stk); @@ -537,11 +535,9 @@ static void random_work(struct work_struct *work) hci_le_start_enc(hcon, ediv, rand, stk); hcon->enc_key_size = smp->enc_key_size; } else { - u8 stk[16], r[16], rand[8]; - __le16 ediv; - - memset(rand, 0, sizeof(rand)); - ediv = 0; + u8 stk[16], r[16]; + __le64 rand = 0; + __le16 ediv = 0; swap128(smp->prnd, r); smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(r), r); @@ -1205,20 +1201,22 @@ int smp_distribute_keys(struct l2cap_conn *conn) struct smp_ltk *ltk; u8 authenticated; __le16 ediv; + __le64 rand; get_random_bytes(enc.ltk, sizeof(enc.ltk)); get_random_bytes(&ediv, sizeof(ediv)); - get_random_bytes(ident.rand, sizeof(ident.rand)); + get_random_bytes(&rand, sizeof(rand)); smp_send_cmd(conn, SMP_CMD_ENCRYPT_INFO, sizeof(enc), &enc); authenticated = hcon->sec_level == BT_SECURITY_HIGH; ltk = hci_add_ltk(hdev, &hcon->dst, hcon->dst_type, HCI_SMP_LTK_SLAVE, authenticated, enc.ltk, - smp->enc_key_size, ediv, ident.rand); + smp->enc_key_size, ediv, rand); smp->slave_ltk = ltk; ident.ediv = ediv; + ident.rand = rand; smp_send_cmd(conn, SMP_CMD_MASTER_IDENT, sizeof(ident), &ident); |