Blake Eggleston created CASSANDRA-11810:
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Summary: 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: 3.7
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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