Signing a file that is already signed

To sign a file which is already signed:

1. In Windows Explorer, select the file to be signed and right-click to choose Send to >Stormshield Data Sign from the context menu: the file is then placed in the signature book window.
   • If the signature book window is already open, you can drag and drop the desired file in the Signature book.
   • You can double-click on a .p7f or .p7m file. The signature book window automatically opens and the file is displayed in it.
2. From the signature book window, right-click on the file to select Sign.

   

3. Follow the instructions displayed on the screen. When prompted for it, enter your password or PIN (if you use a smart card). The Operation type window appears:

   

4. Select one of the options according to your needs:
   • Co-sign to add your own signature to the file, independently from any other signature already present and whether they are correct or not.
   • Counter-sign to add your signature and counter-sign all the other signatures already included (and possibly other counter-signatures). This operation is only available if all the signatures have already been checked and validated.
     NOTE
     You can either counter-sign:

     • All the signatures of a signed document (as described above) or
     • Only one signature (see Counter-signing a specific signature).
   • Over-sign. When you over-sign a document, you actually create a new file using the same fine name and an additional .p7f extension.

NOTE
Each time a file is over-signed, the .p7f extension is added to the new file generated. It is then possible to find files with several .p7f file type extension.