How digital signature is happening in .dwfx file?

[vmohan_rajan]

I extracted dwfx file which contains digital signature. In this I want to know which part of the content is originally taken and digital signature is applied? For example, take a digitally signed PDF. In which, character starting from the top to a character before signature buffer and again from a character after this signature buffer and till the end of the file the content is considered for digital signature. Like this how .dwfx file is handled?

[lmpmbernardo]

since no one ever replied...

signing .dwfx files is different from signing pdf files. to start with, a dwfx file is a package that follows opc, the open packaging conventions. if you want to learn about signing please consult the ISO/IEC 29500-2:2008 standard.

[victordomain]

Hi,

If you like to digitally sign your .DWFx files you canuse Open XML Signer available at this link: http://www.signfiles.com/open-xml-signer/

[lmpmbernardo]

nice plug but what does that bring me that I cannot already get with ADR itself and with MS XPS Viewer (which can sign too)? we need solutions that work in non Windows platforms. Windows is already covered....