TElOfficeOpenXMLBaseSignatureHandler is a descendant of TElOfficeOpenXMLCustomSignatureHandler.
This class is a base security handler that allows to sign and validate signatures over Microsoft Office OOXML documents.
To produce an electronic signature over a document: create a new handler; add it to the document that should be signed; call AddDocument to add the document to the SignedParts list; call AddCoreProperties if needed; sign the document using synchronous Sign, or asynchronous InitiateAsyncSign method.
To use this class in the development and distribution of your software projects, you need to purchase one of the following licenses:
OfficeBlackbox OR SecureBlackbox Data Security OR SecureBlackbox Professional