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Choice of Linux PDF viewers is very strange[1] - basically, no open source viewers listed. [1] https://www.pdf-insecurity.org/signature/viewer.html https://www
by xvilka 8y ago
Choice of Linux PDF viewers is very strange[1] - basically, no open source viewers listed.
[1] https://www.pdf-insecurity.org/signature/viewer.html https://www.pdf-insecurity.org/signature/viewer.html
- weinzierl 8y agoDoes any of them support signature verification at all? Last time I checked there was pdfsig and that was it.
- johnisgood 8y agoI think mupdf supports it if you compile it with that feature enabled, and I also heard about "mutool sign", which is supposed to be able to sign and verify, but I never used it. In fact, I don't even have the binary for some reason. I will try to compile mupdf from scratch now and see if it supports signatures properly. It would be good if it supported it right out of the box. Maybe some of their devs can clarify this. So... I compiled it and now I have mutool. I tried to run `mutool sign SampleSignedPDFDocument.pdf` and it gave me this output: verifying signature on page 1 result: '' The PDF I am using: https://blogs.adobe.com/security/SampleSignedPDFDocument.pdf https://blogs.adobe.com/security/SampleSignedPDFDocument.pdf I have no idea how I can format the output. Is there a way to use code blocks on here?
- hannob 8y agoRead the FAQ: https://www.pdf-insecurity.org/other/faq.html https://www.pdf-insecurity.org/other/faq.html Basically they tested almost everything you could think of, but none of the major open source viewers supports PDF signature verification in the first place.