Signing a file that is already signed

To sign a file which is already signed:

  1. In Windows Explorer, select the file you want to sign and right-click to select Send to > Stormshield Data Sign from the pop-up menu. The file is then dropped 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). Other signatures must be first successfully checked to ensure the counter-signature validity.

      You can either counter-sign:

    • Over-sign. When you over-sign a document, you actually create a new file using the same fine name and an additional .p7f extension.

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.