PDF Digital Signatures TWG

The PDF Digital Signature TWG was created to meet the needs software companies who are creating PDF signing software or need to rely on signature validation software.

The existing ISO standards for PDF (ISO 32000-2) and PDF/A (ISO 19005-1,-2, -3) specify the integration of a digital signature in the PDF object structure and focus more or less purely on the PDF point of view.

The implications of various signature types were originally specified via RFCs and PKCS standards. In the meantime the most comprehensive specification  is the ETSI standard PAdES (ETSI EN 319 142-1, ETSI EN 319 142-2 and ETSI EN 319 142-3) which itself is derived from the underlying CAdES standard.

As PDF can be regarded as the dominant document format for document digital signing the various features possible within PDF signing like timestamping, serial signatures and certification signatures together with the complex handling of validating a multiple signed PDF document generates a demand for clarification and interpretation of the actual specifications. This forms an essential part of the work to be done within TWG DS.

Another goal should be to collect requirements and discuss new feature requests for future enhancements of the official standard specifications as a sort of feedback of the practitioners and the PDF market.

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Members of the PDF Association are entitled to participate in online and in-person PDF DS TWG meetings, subscribe to the PDF DS TWG listserv, access ISO draft documents and other benefits as well. Review the options for membership, or just get in touch to learn more!



COMMUNITY CHAIR

Nitesh Rastogi
Datalogics



Michael Demey
iText Group NV



Stephan Mühlstrasser
PDFlib GmbH



Guido Schnepp
CRE-DO GmbH


Photograph of a blond man with full beard and long hair.
Nick Boyd
iText Group NV



Raf Hens
iText Group NV



Dietrich von Seggern
callas software GmbH



Jenny Li
Foxit Corporation



Leonard Rosenthol
Adobe



Fangming Liu
Foxit Corporation


Roman Toda
Roman Toda
Normex



Nobuhiko Shibata
Skycom Corporation



Andreas Mayer
intarsys AG



Matthew Hardy
Adobe


Ivan Nincic
Ivan Nincic
PDFTron



Hans Bärfuss
PDF Tools AG


Peter Wyatt
Peter Wyatt
Peter Wyatt



Ulrich Isermeyer
Adobe



Rainer Plöckl
PDFlib GmbH



Bernd Wild
intarsys AG




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