Hello, I have already contributed issues: PDFBOX-1780 , PDFBOX-1690, PDFBOX-1766.
Now, I can to implement some new feature for the apache pdf box. 1) First new feature. When we signd a PDF document, at the moment we use signing time from the clock on the signer's computer. For more security, its better if we use timestamp time. For more information see http://en.wikipedia.org/wiki/Trusted_timestamping I can implement this feature :) 2) After I implement TSA time feature, which I have written above, I think It will be very good if we implement (I can implement this too) PADES LTV profile. In the other words, it is PAdES-Long Term Validation Profile. See specification doc: http://www.etsi.org/deliver/etsi_ts/102700_102799/10277804/01.01.01_60/ts_10277804v010101p.pdf I think they are very important and usefull features. :) So, what do you think about this features? :)
