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vmohan_rajan
Posts: 1
Registered: ‎07-06-2010
Message 1 of 4 (726 Views)

How digital signature is happening in .dwfx file?

726 Views, 3 Replies
07-06-2010 02:07 AM

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?

Contributor
lmpmbernardo
Posts: 14
Registered: ‎01-18-2011
Message 2 of 4 (510 Views)

Re: How digital signature is happening in .dwfx file?

01-18-2011 04:15 AM in reply to: vmohan_rajan

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.

New Member
victordomain
Posts: 2
Registered: ‎04-27-2011
Message 3 of 4 (320 Views)

Re: How digital signature is happening in .dwfx file?

04-27-2011 07:35 AM in reply to: lmpmbernardo

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/

Contributor
lmpmbernardo
Posts: 14
Registered: ‎01-18-2011
Message 4 of 4 (255 Views)

Re: How digital signature is happening in .dwfx file?

07-14-2011 07:48 AM in reply to: victordomain

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....

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