Thomas Chojecki created PDFBOX-1513:
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Summary: PDF signature improvements
Key: PDFBOX-1513
URL: https://issues.apache.org/jira/browse/PDFBOX-1513
Project: PDFBox
Issue Type: Improvement
Components: Parsing, PDFReader, PDModel
Affects Versions: 1.7.1
Reporter: Thomas Chojecki
Priority: Minor
Hallo,
i have some signing improvements and want to contribute it.
Changelog:
- add ability to sign documents with xref streams (big thanks to A. Funk). This
will significantly improve the signature creation, due to the fact that there
are more and more documents with xref streams out there.
- add ability to handle documents with hybrid xref (xref stream and table as
fallback)
- parsing incremental updated documents where the offsets of the xref entries
doesn't match exactly the position of the object. The conflict solver tollerate
objects that are +- 4 bytes out of the offset.
- fix COSString parsing if there are malformed chars inside a hex string.
- removed some confusing logging in the conflict solver
- add ability to create and sign signature fields.
- add ability to create pades signature timestamps (PAdES Part4)
- improved the signature search and added new convenience methods to PDDocument.
- add new methods to the PDSignature object (seed value dict)
- add examples for signing pdf documents (just basic signatures, i try to add
some for advanced signing with SignatureOptions and maybe a example for visual
signing)
hope i don't forgot something.
All the changes are made on a pdfbox fork on github. A pull request will follow
in a moment.
Best regards
Thomas
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