[jira] Updated: (COMPRESS-89) Better support for encrypted ZIP files

["Stefan Bodewig (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/COMPRESS-89?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefan Bodewig updated COMPRESS-89:
-----------------------------------

    Fix Version/s: 1.1
         Assignee: Stefan Bodewig

> Better support for encrypted ZIP files
> --------------------------------------
>
>                 Key: COMPRESS-89
>                 URL: https://issues.apache.org/jira/browse/COMPRESS-89
>             Project: Commons Compress
>          Issue Type: Improvement
>    Affects Versions: 1.0, 1.1
>            Reporter: Antoni Mylka
>            Assignee: Stefan Bodewig
>             Fix For: 1.1
>
>         Attachments: apache-maven-2.2.1-encrypted-passhello.zip, commons-compress-encrypted.patch
>
>
> Currently when the ZipArchiveInputStream or ZipFile encounters an encrypted zip it bails out with cryptic exceptions like: 'invalid block type'. I would like to have two things:
> 1. an 'encrypted' flag in the ZipArchiveEntry class. It would be taken from the first bit of the 'general purpose flag'
> 2. more descriptive error messages, both in ZipFile and ZipArchiveInputStream
> It might be useful in case someone wants to implement proper support for encrypted zips, with methods to supply passwords/encryption keys and proper encryption/decryption algorithms.
> For the time being I just need to know if a file is encrypted or not. 
> I will post a patch with a proposal of a solution in near future.

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