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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #3 from Markus Kilås <digital at markuspage.com> 2010-07-28 11:07:28 PDT ---
Created an attachment (id=37425)
 View: https://bugs.freedesktop.org/attachment.cgi?id=37425
 Review: https://bugs.freedesktop.org/review?bug=16770&attachment=37425

Initial patch for parsing digitally signed PDFs

I have started to look at support for verifying signed PDF documents. 

The attached patched gives very basic support by providing methods for getting
the signature data (/Contents), the signature type (/SubFilter i.e. PKCS7) and
the ByteRanges that the verifier needs to calculate the digest over. Then the
actual signature and certificate chain verification is not specific to PDF and
could be implemented by the applications using any crypto library.

// Markus Kilås
markus at primekey.se

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