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authorJohan Hedberg <johan.hedberg@intel.com>2015-06-11 13:52:30 +0300
committerMarcel Holtmann <marcel@holtmann.org>2015-06-12 12:38:45 +0300
commite3f6a257a73d03799918a79529632f2df2b4d668 (patch)
tree081b2c492ead6b031aca92c4e3e59f2d0f85bba6 /net/bluetooth/smp.c
parent821f37666815c9f3a7a4d195ce9184ad4d084942 (diff)
downloadlinux-e3f6a257a73d03799918a79529632f2df2b4d668.tar.xz
Bluetooth: Use actual encryption key size for SMP over BR/EDR
When pairing over SMP over BR/EDR the generated LTK has by default the same key size as the BR/EDR Link Key. Make sure we don't set our Pairing Request/Response max value to anything higher than that. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/smp.c')
-rw-r--r--net/bluetooth/smp.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index d9ed5e8ee6a0..3d0f7d2a0616 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -1705,7 +1705,7 @@ static void build_bredr_pairing_cmd(struct smp_chan *smp,
req->init_key_dist = local_dist;
req->resp_key_dist = remote_dist;
- req->max_key_size = SMP_MAX_ENC_KEY_SIZE;
+ req->max_key_size = conn->hcon->enc_key_size;
smp->remote_key_dist = remote_dist;
@@ -1714,7 +1714,7 @@ static void build_bredr_pairing_cmd(struct smp_chan *smp,
memset(rsp, 0, sizeof(*rsp));
- rsp->max_key_size = SMP_MAX_ENC_KEY_SIZE;
+ rsp->max_key_size = conn->hcon->enc_key_size;
rsp->init_key_dist = req->init_key_dist & remote_dist;
rsp->resp_key_dist = req->resp_key_dist & local_dist;