[Poppler-bugs] [Bug 99271] make it possible to extract digital signature data (also in pdfsig)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99271

--- Comment #1 from Hans-Ulrich Jüttner <huj at froreich-bioscientia.de> ---
A PDF signature specifies two ranges in the byte stream to be hashed for the
signature. Usually they just exclude the digital signature itself.

Therefore, it would also be very beneficial to have an interface giving access
to these ranges. In addition method telling whether the whole PDF document
except for the signature itself is authenticated by the signature would be
desirable.

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