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From "Dawid Weiss (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COMPRESS-380) Support for ENHANCED_DEFLATED (Deflate64) in ZIP files
Date Wed, 13 Dec 2017 17:12:01 GMT

    [ https://issues.apache.org/jira/browse/COMPRESS-380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16289544#comment-16289544
] 

Dawid Weiss commented on COMPRESS-380:
--------------------------------------

Unless it's some kind of vulnerability (which should be reported using different channels
anyway) the JIRA issues should be visible for everyone so that people can see the whole history
of the issue, no problem with that.

Like I said, the patch is looking great to me.

> Support for ENHANCED_DEFLATED (Deflate64) in ZIP files
> ------------------------------------------------------
>
>                 Key: COMPRESS-380
>                 URL: https://issues.apache.org/jira/browse/COMPRESS-380
>             Project: Commons Compress
>          Issue Type: New Feature
>            Reporter: Dawid Weiss
>         Attachments: compress-380.diff
>
>
> Some of the (large) ZIP files we try to process currently will throw this:
> {code}
> UnsupportedZipFeatureException: unsupported feature method 'ENHANCED_DEFLATED' 
> {code}
> which is a bummer since JDK's implementation also doesn't support Deflate64. This seems
to be PKWare's extensions, although code to decrypt it exists in zlib (and is appropriately
licensed, I believe).
> https://github.com/madler/zlib/tree/master/contrib/infback9



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