Created attachment 66786
PDF Signature verification support
Here's an initial attempt at solving this issue.
This patch adds signature verification support to poppler core.
It uses OpenSSL PKCS7 API for the crypto operations (signature and certificate
Validations).
4 new functions were added at the glib wrapper level:
poppler_document_is_signed
poppler_document_signature_validate
poppler_document_signature_get_time
poppler_document_signature_get_signername
I've coordinated with Vasco Dias to expose this feature in Evince and
his work is in the latest patches attached to this bug:
https://bugzilla.gnome.org/show_bug.cgi?id=614929
As the additional dependency on OpenSSL couldn't possibly satisfy
everyone I made it optional at build-time with --enable-openssl for
Autotools and -DENABLE_OPENSSL=ON for cmake
Current limitations:
- Timestamps contained in the PKCS7 signature are not verified
- the new functionality is not yet exposed in the qt4 wrapper as I prioritized
the glib wrapper to support Evince.
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https://bugs.launchpad.net/bugs/740506
Title:
verify digital signatures
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