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Bluetooth: SSP: Improve BR SC only mode #78837

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Bluetooth: SSP: Improve BR SC only mode #78837

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17 changes: 17 additions & 0 deletions subsys/bluetooth/host/classic/ssp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -443,6 +443,23 @@ void bt_hci_link_key_notify(struct net_buf *buf)

LOG_DBG("%s, link type 0x%02x", bt_addr_str(&evt->bdaddr), evt->key_type);

if (IS_ENABLED(CONFIG_BT_SMP_SC_ONLY) && (evt->key_type != BT_LK_AUTH_COMBINATION_P256)) {
/*
* When in Secure Connections Only mode, all services
* (except those allowed to have Security Mode 4, Level 0)
* available on the BR/EDR physical transport require Security
* Mode 4, Level 4.
* Link key type should be P-256 based Secure Simple Pairing
* and Secure Authentication.
*/
LOG_WRN("For SC only mode, link key type should be %d",
BT_LK_AUTH_COMBINATION_P256);
ssp_pairing_complete(conn, bt_security_err_get(BT_HCI_ERR_AUTH_FAIL));
bt_conn_disconnect(conn, BT_HCI_ERR_AUTH_FAIL);
bt_conn_unref(conn);
return;
}

if (!conn->br.link_key) {
conn->br.link_key = bt_keys_get_link_key(&evt->bdaddr);
}
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