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++.... Dotx , Docm , Dotm , Odt , Ott . Output will be written to the... Dotx , Docm , Dotm , Odt , Ott . Output will be written to the...