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From "Jeremiah Jordan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-11809) IV misuse in commit log encryption
Date Mon, 16 May 2016 16:16:12 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-11809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jeremiah Jordan updated CASSANDRA-11809:
----------------------------------------
    Fix Version/s:     (was: 3.7)
                   3.x

> IV misuse in commit log encryption
> ----------------------------------
>
>                 Key: CASSANDRA-11809
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11809
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Blake Eggleston
>            Assignee: Jason Brown
>             Fix For: 3.x
>
>
> Commit log segments share iv values between encrypted chunks. The cipher should be reinitialized
with a new iv for each discrete piece of data it encrypts, otherwise it gives attackers something
to compare between chunks of data. Also, some cipher configurations don't support initialization
vectors ('AES/ECB/NoPadding'), so some logic should be added to determine if the cipher should
be initialized with an iv.



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