Aspose::Words::DigitalSignatures::DigitalSignatureUtil::Sign method. Signs source document using given CertificateHolder with digital Signature and writes signed document to destination stream. Supported formats are: Doc, Dot, Docx, Dotx, Docm, Dotm, Odt, Ott.Output will be written to the start of stream and stream size will be updated with content length in C++....CertificateHolder with digital signature and writes signed document...of the document's digital signatures are valid and check their...