[jira] [Comment Edited] (PDFBOX-2269) Support for AES-256 Rev. 5 Decryption (Acrobat 9)

["Michele Balistreri (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PDFBOX-2269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14094236#comment-14094236 ] 

Michele Balistreri edited comment on PDFBOX-2269 at 8/12/14 4:12 PM:
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I am pretty sure you have not installed the Java Cryptography API Unlimited Policy file. This is required to support 256-bit keys.

You can see in the stack trace:

Caused by: java.security.InvalidKeyException: Illegal key size
	at javax.crypto.Cipher.checkCryptoPerm(Cipher.java:1024)




was (Author: briksoftware):
I am pretty sure you have not installed the Java Cryptography API Unlimited Policy file. This is required to support 256-bit keys.

> Support for AES-256 Rev. 5 Decryption (Acrobat 9)
> -------------------------------------------------
>
>                 Key: PDFBOX-2269
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2269
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: PDModel
>    Affects Versions: 2.0.0
>            Reporter: Michele Balistreri
>         Attachments: AES-256_Rev5.diff, pass17_decrypted.pdf
>
>
> This patch adds support for decrypting files using the (deprecated) AES-256 scheme revision 5. The current version only support revision 6. Since revision 5 files are generated by Acrobat 9, there is a relatively large amount of them in the wild so support is needed.
> This patch includes also the fixes from PDFBOX-2268



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