Digital Signature API

Set security constraints for Microsoft Office and PDF documents.

The DevExpress Office File API ships with integrated digital signature support. You can electronically sign Microsoft Word documents, Microsoft Excel workbooks, and PDF files with X.509 certificates.

PDF Document Signatures

DevExpress PDF Signature API supports the following signature types:

  • PKCS#7 signatures with X.509 certificates;
  • PAdES B,T, LT and LTA baseline signature profiles.

With our API, you can quickly:

  • Create new signature fields with multiple attributes (name, location, reason, image, etc.)
  • Remove existing signatures.
  • Sign PDF docs with multiple signatures.
  • Generate a timestamp and apply it to a signature.
  • Sign a document with a document-level timestamp.
  • Sign PDF docs in deferred mode.


PDF Document Signatures

MS Office Document Signatures

You can use XAdES-BES and XAdES-T signatures with X.509 certificates to digitally sign Microsoft Office documents in the following formats:

  • MS Word
    97-2003 (DOC, DOT)
  • MS Excel
    97-2003 binary file (XLS, XLT)
  • MS PowerPoint


MS Office Document Signatures

Validate Signatures

Our Digital Signature API allows you to validate signatures in MS Word documents, Excel workbooks, and PowerPoint presentations. You can specify various validation options such as signature or timestamp certificate policy, decryption password, etc.

Remove Signatures

You can clear all signatures from a document and save the result.

Time to Rock & Roll – Download our Free Trial Today
And See Why our WinForms Controls Are Consistently Voted #1

Developers have consistently voted DevExpress best-in-class. Among countless other awards, we've received over 70 first place Visual Studio Magazine Reader's Choice awards over the last six years. Download our fully-functional 30-day trial today and experience the DevExpress difference today.


Download 30-Day Trial

Best in Class Tools

DevExpress is honored to have been voted best in class 20 times in this year's Visual Studio Magazine Reader's Choice Awards.

Experience the DevExpress difference and see why your peers consistently vote our products #1. With our Universal Subscription, you will build your best, see complex software with greater clarity, increase your productivity and create stunning applications for Windows, Web and your Mobile world.