Comment 4 for bug 740506
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bbfa235
(Get the code!)
Created 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
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