Authentication of Digital-signed files from External System

Is it possible from PeopleSoft point of view?

Here is a scenario  

 

===================

1) Using AE and File Layout to read data from interface files.

 

2) The proposed design is:

a) The interface files are created and digitally signed in external system

b) The digital-signed interface files will be send over to PeopleSoft's File Server

c) Before processing, custom AE program will authenticate the interface files by using digital signature technology, to confirm the interface file's originator are trusted source.

d) If authentication is successful, the custom AE program will start reading the files using File Layout and store the data in staging table.