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T. Neubauer, E. Weippl, S. Biffl:
"Digital Signatures with Familiar Appearance for e-Government Documents: Authentic PDF";
Talk: First International Conference on Availability, Reliability and Security (ARES'06), Vienna; 2006-04-20 - 2006-04-22; in: "First International Conference on Availability, Reliability and Security (ARES'06)", IEEE Computer Society, California, USA (2006), ISBN: 0-7695-2567-9; 723 - 731.

Most e-government applications have to find a solution for simple, reliable, secure and authentic signing of official documents. Citizens need a simple way to verify the authenticity and integrity of an official document. Currently XML documents allow representing such documents. However, the XML format does not guarantee a definite visual presentation of the document (presentation problem). In this paper we describe a solution approach -so-called authentic PDF - using PDF technology that fulfills the following key requirements: 1) A visual presentation that resembles the traditional style of an official document; 2) A visual representation of the signature value that does not change the document authenticity; 3) The option for the holder of an official document to restore the electronic version of the authentic official document from the visual representation of the document (e.g. printout); 4) The filtering of dynamic content. We implemented and evaluated different approaches in a feasibility study using a typical e-government document set. The results of the study indicate that PDF is suitable to meet specific legal requirements on a signature solution in combination with a smartcard; the method has proven to be reliable and support a sufficient level of security.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC06586815

http://publik.tuwien.ac.at/files/pub-inf_3651.pdf