Thank you Leonard, thank you Michael for your responses, you confirmed my doubts.
In Lithuania we have specification "PDF-LT", here are links to English version of the document and its appendixes with technical details: http://www.archyvai.lt/download/10484/pdf_lt_specification.doc <http://www.archyvai.lt/download/10484/pdf_lt_specification.doc> http://www.archyvai.lt/download/10483/pdf_lt_apend.doc <http://www.archyvai.lt/download/10483/pdf_lt_apend.doc> The appendixes document describes the technical details of the specification. Specification does not seek to override any part of ISO 32000-1 or ISO 19005-2. It defines new XMP metadata, adds few dictionary entries with specific developer prefix "LTUd" registered by Adobe, defines restrictions for document content and requirements for signatures. Section II in appendixes document defines optional metadata in XMP format that may be added to signature dictionary Metadata entry, which placement in signature dictionary raised my doubts about validity of such approach. There shouldn't be any other points in specification that would be conflicting with the standards. Specification defined document format being fully conformant to PDF/A-2 and signed with PAdES Baseline format signatures. Entering of EU eIDAS Regulation into force and approval of the new PAdES Baseline signatures formats will require to make amendments into PDF-LT specification to be aligned with new EU requirements. Thus it will also be a good opportunity to resolve this issue with metadata in signature dictionary. I hope it won't be a big issue for current implementations, as specification was not widely endorsed since it has not been fully entered into force. Besides, those metadata were optional and included only in specific scenarios (when public institution registers a document). To shift the metadata to signature field dictionary probably would be the best solution. I also considered this option. Once again, thank you for your responses. -- View this message in context: http://itext.2136553.n4.nabble.com/Metadata-in-signature-dictionary-tp4661089p4661092.html Sent from the iText mailing list archive at Nabble.com. ------------------------------------------------------------------------------ _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions iText(R) is a registered trademark of 1T3XT BVBA. Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
