[
https://issues.apache.org/jira/browse/PDFBOX-4413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16796437#comment-16796437
]
Michael Klink commented on PDFBOX-4413:
---------------------------------------
[~tilman]: Which AES 256 encryption encryption has been implemented?
There was a variant defined in a proprietary Adobe extension (encryption
dictionary entry *R* = 5) which has been deprecated in PDF-2 and replaced with
a standard variant with *R* = 6, cf. ISO 32000-2.
> Add support for AES256 encryption for public key
> ------------------------------------------------
>
> Key: PDFBOX-4413
> URL: https://issues.apache.org/jira/browse/PDFBOX-4413
> Project: PDFBox
> Issue Type: Improvement
> Components: Crypto
> Affects Versions: 2.0.13
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Priority: Major
> Labels: AES256
> Fix For: 2.0.14, 3.0.0 PDFBox
>
>
> Adobe 9 added support for AES 256 encryption. This should also be implemented
> for public key encryption, currently it is only implemented for symmetric key
> encryption.
> Further information is available at
> [http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/adobe_supplement_iso32000.pdf].
> I suspect that much of it is already available in the base class, but
> PublicKeySecurityHandler.prepareDocumentForEncryption() is definitively old
> stuff.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@pdfbox.apache.org
For additional commands, e-mail: dev-h...@pdfbox.apache.org
