Hi,
I would create a Custom Input Filter that allows you to read the Excel file by providing the password of the files. I believe you can check [Custom Input Filter](https://community.denodo.com/docs/html/browse/7.0/vdp/administration/creating_data_sources_and_base_views/path_types_in_virtual_dataport/path_types_in_virtual_dataport#custom-input-filters) section of the manual to know more about it.
If you want to use Decrypt option, you would need to encrypt your Excel file with PBE with MD5 and DES to allow Virtual DataPort to decrypt it by using the option “Decrypt (PBE with MD5 and DES)”.
Hope this helps!