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https://issues.apache.org/jira/browse/CASSANDRA-11810?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeremiah Jordan updated CASSANDRA-11810:
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Fix Version/s: (was: 3.7)
3.x
> IV misuse in hints encryption
> -----------------------------
>
> Key: CASSANDRA-11810
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11810
> Project: Cassandra
> Issue Type: Bug
> Reporter: Blake Eggleston
> Assignee: Jason Brown
> Fix For: 3.x
>
>
> Encrypted hint files 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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