Feel free to write it. All of the specifications are documented as part of ISO 32000-1 (ISO PDF), though may also need related standards such as PKCS#7, PCKS#1, RSA encryption, etc.
-----Original Message----- From: Krzysztof Żelechowski [mailto:giecr...@stegny.2a.pl] Sent: Thursday, January 27, 2011 7:51 PM To: Leonard Rosenthol Cc: pdf-devel@gnu.org Subject: Re: [pdf-devel] wish: verify signed PDF documents Dnia czwartek, 27 stycznia 2011 o 18:32:05 Leonard Rosenthol napisał(a): > While it would be nice for gnupdf to someday be able to do this, I will point > out that there are a number of non-cost (free) tools including Adobe Reader > that can verify PDF signatures AS WELL AS open source (free) libraries and > tools such as iText that can do so as well. I am for things free as in beer and iText’s documentation is not copyleft — so I dare sustain my suggestion. Thanks, Chris
