Excel File Upload in BSP

Hi All,

        I need to upload excel file from BSP. As there is fakepath problem exist from Web. I am saving excel data(encrypted form) in ICM cache then i am getting file path ( from server cache). Now how i can i read this file as it is exist in application server.

        Is there any method to retrieve data from this file other than front_end_services ?

OR

        Is it possible to do SAVEAS action(.xls to .csv) at application server cache. Because we can decrypt .csv file data in SAP.

Regards,

Praveen