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Commit e3f6a257 authored by Johan Hedberg's avatar Johan Hedberg Committed by Marcel Holtmann
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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: default avatarJohan Hedberg <johan.hedberg@intel.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 821f3766

net/bluetooth/smp.c

+2 −2
Original line number Diff line number Diff line
@@ -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;