Digital Signature API

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.
• Validate Long Term Validation (LTV) signatures and Document Level Timestamps.
• Verify certificate revocation based on on Certificate Revocation List (CRL) and Online Certificate Status Protocol (OCSP) responses.

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
  Open XML (DOCX, DOTX, DOTM, DOCM)
  97-2003 (DOC, DOT)
• MS Excel
  Open XML (XLSX, XLTX, XLSM)
  97-2003 binary file (XLS, XLT)
• MS PowerPoint
  PPTX, PPT

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.