I want to digitally sign a PDF file using a certificate stored on a USB-token, HSM, etc. How do I use the private key stored on the USB token using JAVA?
Open the PDF document or form that you want to sign. Click the Sign icon in the toolbar. Alternatively, you can choose Tools > Fill & Sign or choose Fill & Sign from the right pane. The Fill & Sign tool is displayed.
Open the Preferences dialog box. Under Categories, select Signatures. For Verification, click More. To automatically validate all signatures in a PDF when you open the document, select Verify Signatures When The Document Is Opened.
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