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Security · Compliance

How to Sign PDFs with DSC USB Token Certificates on Windows

Apply legally compliant digital signatures using USB Token DSC certificates and PFX files on Windows without expensive Adobe Acrobat Pro subscriptions.

What is a Digital Signature Certificate (DSC)?

Unlike a drawn image of a signature, a Digital Signature Certificate (DSC) uses public key cryptography (X.509 standards) to authenticate the signer's identity and prove that the document has not been altered since it was signed. Governments and regulatory agencies worldwide mandate DSC signatures for corporate filings, tenders, and tax submissions.

The problem with commercial PDF signing tools

Most commercial PDF viewers lock DSC token signing behind premium subscriptions costing $20 to $30 every month. If you only sign a few invoices or regulatory documents each week, paying recurring fees is frustrating.

Signing documents with Coderbunch PDF Toolkit

  1. Insert your USB Cryptographic Token or locate your local .pfx / .p12 certificate file.
  2. Open Coderbunch PDF Toolkit on Windows and click Sign PDF.
  3. Load your PDF document and select DSC Certificate.
  4. Select your certificate, enter your token PIN/password, and choose the signature placeholder location on the page.
  5. Click Sign & Save. The PDF is signed cryptographically on your local machine with an immutable integrity stamp.
Offline Cryptographic Signing with PDF Toolkit

Sign contracts and tenders locally with full cryptographic compliance.

Install from Microsoft Store · Product details