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https://issues.apache.org/jira/browse/PDFBOX-2776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17550903#comment-17550903
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Michael Klink commented on PDFBOX-2776:
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The problem here is that the task in this issue is unclear.
Both LTV related mechanisms of the old ISO 32000-1 and of the newer PAdES
specifications were discussed. These mechanisms differ considerably.
Both "LTV-enabled" in Adobe Acrobat and PAdES LTV were mentioned as targets.
They are not identical.
Up to here the issue essentially served as a brain storming platform for LTV
related features.
> support "Long Term Validation" signature extensions (LTV)
> ---------------------------------------------------------
>
> Key: PDFBOX-2776
> URL: https://issues.apache.org/jira/browse/PDFBOX-2776
> Project: PDFBox
> Issue Type: Improvement
> Components: Signing
> Affects Versions: 2.0.0
> Reporter: Ralf Hauser
> Priority: Major
> Fix For: 3.0.0 PDFBox
>
> Attachments: certified_368835_Sig_de_201026171017_LTV.pdf,
> nonSigPdf-sig1.pdf, notCertified_368835_Sig_en_201026090509.pdf,
> notCertified_368835_Sig_en_201026090509_report.png, shortLivedCrlAsLTV-sig.pdf
>
>
> in recent acrobat readers, every signature is commented w.r.t. "LTV"
> ETSI TS 102 778-4 V1.1.2 (2009-12) Technical Specification
> referenced as part 4 in
> http://en.wikipedia.org/wiki/PAdES
> It would be great if pdf signatures created with PDFBox would assist in
> creatign those.
> Target test setup:
> 1) input of an unsigned PDF-1.5 document
> 2) signature with
> a) local key pair
> b) hsm
> c) remote signature service (e.g. via soap)
> 3) add ocsp response for LTV (crls typically are larger)
> ==> Result: signed pdf where acrobat reader claims it to be "LTV enabled"
> see also PDFBOX-1848
> more in
> http://stackoverflow.com/questions/26090558/ltv-enabled-signature-in-pdf
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