Digitally Signing PDF Files with DSC on Windows

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How to Sign a PDF with a Digital Signature on Windows

This guide explains how to digitally sign a PDF document using a DSC (Digital Signature Certificate) on a Windows system.

Step 1: Install Adobe Acrobat Reader

• Download Adobe Acrobat Reader from the official Adobe website.
• Install the software – it is required to open and digitally sign PDF files.

Step 2: Insert the DSC Token (USB)

• Plug the DSC USB token into your Windows system.
• Open the USB drive. You will see three `.exe` files inside.
• Run and install the file named: hyperPKI_HYP2003_setup.exe

Step 3: Open the PDF File

• Launch Adobe Acrobat Reader.
• Open the PDF file you want to digitally sign.

Step 4: Access the Certificate Tool

• In the left-hand side panel of Adobe Reader, click on Certificates.
• You will see the following tools:

 * Digital Signature
 * Timestamp

Step 5: Apply the Digital Signature

1. Click on Digital Signature.
2. Drag a box on the PDF where you want the signature to appear.
3. A window will appear showing available certificates.
4. Select your DSC certificate.

Step 6: Authenticate and Sign

• Enter the DSC token password when prompted.
• Once authenticated, the digital signature will be applied to the PDF.
• Save the signed PDF file to complete the process.

Notes

• Ensure your DSC drivers and signing software (HyperPKI) are correctly installed.
• If the signature option does not appear:

 * Try re-inserting the USB token.
 * Restart Adobe Acrobat Reader.

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