File hashing uploads made through TinyMCE

Hi, i am currently hashing original file names of image uploads by using File (Field) Paths and File Hash in some fields, and pushing them into the private filesystem, which works well.  e.g.:

[random:hash:tiger128,3].[file:ffp-extension-original]
Path: useruploads
Upload destination: private files
 

But only for file upload fields. 

Using the TinyMCE editor however (drag & drop etc.) stores the file in a custom folder, but retains its original filename without hashing. 

Is there any input filter around or should the TinyMCE Uploader manually be hooked to be processed by the File Hash or Path module(s)?