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https://issues.apache.org/jira/browse/COMPRESS-380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16286212#comment-16286212
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Stefan Bodewig commented on COMPRESS-380:
-----------------------------------------

[~chalmagr84] having "only" decompression support would be a big step forward. 
The same is true for bzip2 inside of zip archives as well, for example.

WRT developer access, what Dawid said. You can attach a patch here or create 
your own fork on github.

> 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
>
> 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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