[jboss-jira] [JBoss JIRA] (JGRP-1893) ENCRYPT: Thread safety issues during key changes

[Tero Leppikangas (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-1893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13014937#comment-13014937 ] 

Tero Leppikangas commented on JGRP-1893:
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I am facing difficulties when trying to run some tests on 3.5. I am getting IOException from DualStackPlainDatagramSocketImpl.setTimeToLive which is not implemented. I am using Java 8 (on Windows 7), but apparently the behaviour for the socket implementation in question has been the same for earlier Java versions also.

I suppose the fix for JGRP-1880 has something to do with this.


> ENCRYPT: Thread safety issues during key changes
> ------------------------------------------------
>
>                 Key: JGRP-1893
>                 URL: https://issues.jboss.org/browse/JGRP-1893
>             Project: JGroups
>          Issue Type: Bug
>            Reporter: Tero Leppikangas
>            Assignee: Bela Ban
>
> For symmetric encryption, ENCRYPT has members with shared state: secret key, version and ciphers. In order for to provide consistent state between different threads accessing these members, they should be synchronized.
> I have implemented one solution by wrapping the state in separate object which can be found here:
> https://github.com/tepitebson/JGroups/tree/ENCRYPT_Thread_safety
> I also have replaced the WeakHashMap holding the previous keys with Cache in google's guava library so my solution probably is not suitable for an official solution.



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