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List:       xmlrpc-user
Subject:    [jira] [Commented] (WSS-386) Introduce proprietary Compress-Transformation for Encryption / Decrypti
From:       "Anli Shundi (JIRA)" <jira () apache ! org>
Date:       2012-04-22 22:51:34
Message-ID: 1595105794.3253.1335135094211.JavaMail.tomcat () hel ! zones ! apache ! org
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    [ https://issues.apache.org/jira/browse/WSS-386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13259292#comment-13259292 \
] 

Anli Shundi commented on WSS-386:
---------------------------------

For decompression bombs have a configurable maximum size, some default value which \
can't be perfect for everybody and an appropriate error message.

Note that this doesn't solve \
http://www.w3.org/2008/xmlsec/papers/xmlEncCountermeasuresW3C.pdf   
> Introduce proprietary Compress-Transformation for Encryption / Decryption
> -------------------------------------------------------------------------
> 
> Key: WSS-386
> URL: https://issues.apache.org/jira/browse/WSS-386
> Project: WSS4J
> Issue Type: Sub-task
> Reporter: Marc Giger
> Assignee: Marc Giger
> Priority: Minor
> Fix For: 2.0
> 
> 
> Compressing encrypted content (as usually done on transport layer) is not very \
> efficient but plain XML is. Numbers:
> soap-doc-encrypted-not-compressed.xml = ~19M
> soap-doc-compressed-on-transport.gz = ~ 15M
> soap-doc-compressed-before-xml-encryption.xml = ~1.1M
> The advantages are:
> - Factor n less data on the wire
> - Faster processing on both side because much less data must be encrypted/decrypted \
> (depends on encryption/compression algorithm) Disadvantages:
> - Proprietary
> - Introduces new attack-vector and will be disabled by default for WSS with the \
> introduction of secure-processing

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