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From "Myrna van Lunteren (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3710) cannot access a database using AES encryption with encryptionKeyLength=192 after it's been shutdown
Date Fri, 31 Jul 2009 18:24:14 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737638#action_12737638
] 

Myrna van Lunteren commented on DERBY-3710:
-------------------------------------------

for what it's worth...
The troublesome thing with encryptionAESTest was that encryption lengths > 128 require
unrestricted policy files which don't get installed by default, and aren't available to everyone
in the world. So there was the choice between introducing false failures for  those people
who might try to run the tests without them, or risking the tests cases not getting run unnoticed.
Perhaps we should at least *always* print out the text indicating the unrestricted policy
jar files aren't available (currently it's in a if (TestConfiguration.getCurrent().doTrace())
block, so only will show up if you run with -Dderby.tests.trace=true). 

Note also DERBY-4325 which has a further suggestion for improvement to the encryptionAESTest.

> cannot access a database using AES encryption with encryptionKeyLength=192 after it's
been shutdown
> ---------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3710
>                 URL: https://issues.apache.org/jira/browse/DERBY-3710
>             Project: Derby
>          Issue Type: Bug
>          Components: Services
>    Affects Versions: 10.5.1.1
>         Environment: reproduced with ibm's jdk 1.5 and 1.6, and sun's jdk15. 
> AES encryption with encryptionKeyLength=192 requires unrestricted security policy jars
on your jvm
>            Reporter: Myrna van Lunteren
>            Assignee: Rick Hillegas
>         Attachments: derby-3710-01-aa-digestPaddedPassword.diff, derby-3710-01-ab-digestPaddedPassword.diff,
repro-3710.sql, repro.sql
>
>
> Accessing a database created using encryptionAlgorithm: AES/CBC/NoPadding, and encryptionKeyLength=192
after it's been shutdown fails like so:
> -----------------------
> ERROR XJ040: Failed to start database 'encdbcbc_192', see the next exception for details.
> ERROR XBM06: Startup failed. An encrypted database cannot be accessed without the correct
boot password.
> ----------------------
> This does not occur when you use encryptionKeyLength=128 (does not require unrestricted
jars) nor encryptionKeyLength=256 (does require unrestricted policy jars).
> Note: our test (in derbyall): store/aes.sql does not test this, firstly it doesn't test
the larger sizes (because it would diff & fail unless you have been able to adjust your
jvm's policy jars), and secondly it doesn't shutdown before reconnecting.

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