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https://issues.apache.org/jira/browse/PDFBOX-3971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hossam Hazem updated PDFBOX-3971:
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Attachment: PDSeedValueCertificate.patch
> Add Certificate Dictionary to seed value in signature field
> -----------------------------------------------------------
>
> Key: PDFBOX-3971
> URL: https://issues.apache.org/jira/browse/PDFBOX-3971
> Project: PDFBox
> Issue Type: Improvement
> Components: Signing
> Reporter: Hossam Hazem
> Assignee: Tilman Hausherr
> Labels: documentation, features, newbie, patch, test
> Fix For: 2.0.8, 3.0.0
>
> Attachments: COSName.patch, PDSeedValue.patch,
> PDSeedValueCertificate.java, PDSeedValueCertificate.patch
>
>
> This dictionary is important as it gives the ability to put certificate
> constraints on a signature field, like if you want signatures that are signed
> by a specific issuer or authority to only be used in a field.
> currently tested Issuer constraint and it worked, acrobat reader ignores
> other certificates and only allow the issuer given to sign the field.
> documentation is not complete waiting for the initial acceptance to complete.
> new class PDSeedValueCertificate is added which refers to this certificate.
> PDSeedValue is modified to add the new dictionary.
> COSName is modified to add the new pdf names that are included in the
> dictionary.
> reference for this dictionary can be found in PDF reference 1.7 section
> 12.7.4.5 table 235 page 457 in here
> http://www.adobe.com/content/dam/acom/en/devnet/pdf/PDF32000_2008.pdf
> or chapter 8 table 8.84 page 700 in here
> http://archimedespalimpsest.net/Documents/External/pdf_reference_1-7.pdf
> and in here
> https://www.adobe.com/devnet-docs/acrobatetk/tools/DigSig/Acrobat_DigitalSignatures_in_PDF.pdf
> this is my first contribution, hope everything goes well.
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