[Poppler-bugs] [Bug 16770] support for digital signatures

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=16770

--- Comment #64 from Adrian Johnson <ajohnson at redneon.com> ---
(In reply to Andre Guerreiro from comment #63)
> I also thought of adding the feature to pdfinfo but it seems wrong to mix up
> something which performs various computations and relies on external state
> (NSS cert DB) to pdfinfo which just reads metadata from the file itself.

pdfinfo already performs various computations. If the file is encrypted it has
to decrypt the objects to read the file. Reading from other sources is not an
issue if a switch is used to enable the signature checking.

It seems pointless to me to add an entire new utility to perform one function
that can be enabled by adding a switch to pdfinfo.

I'll leave it to Albert decide. But if we keep pdfsigverify I suggest making it
more generic to allow for the possibility of later adding the capability to
sign pdfs. eg call it pdfsig and if verifying signatures it not a fast
operation, maybe enable the check with a switch and make the default operation
(ie no switch specified) report whether the pdf contains a signature.

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