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From "Digy (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENENET-175) Add FIPS compliance to lucene.net
Date Wed, 06 May 2009 19:38:30 GMT

     [ https://issues.apache.org/jira/browse/LUCENENET-175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Digy updated LUCENENET-175:
---------------------------

    Attachment: LUCENENET-175.rar

New Patch + deprecated LOCK_DIR (which is not used in Lucene anymore) removed.

> Add FIPS compliance to lucene.net
> ---------------------------------
>
>                 Key: LUCENENET-175
>                 URL: https://issues.apache.org/jira/browse/LUCENENET-175
>             Project: Lucene.Net
>          Issue Type: Improvement
>         Environment: CLR 2.0; DOT.NET
>            Reporter: Torsten Rendelmann
>         Attachments: FIPS_COMLIANCE.patch, LUCENENET-175.rar, LUCENENET-175.rar
>
>   Original Estimate: 0.25h
>  Remaining Estimate: 0.25h
>
> The FSDirectory.cs is the only place it have to be modified to apply FIPS compliance.
> I think, changing to use a FIPS compliant algorithm in general for the NET port of lucene
to calc the lock
> file name is "safe" (mean: java-compat.) - the only case where I can see the
> may have to use the same algorithm is if a java-lucene impl. access the
> index with a writer at the same time as lucene.net - that would be rarely
> the case: writing to the same index is only allowed by one writer.
> First change required was to switch 
> private static System.Security.Cryptography.MD5 DIGESTER; to
> private static readonly System.Security.Cryptography.HashAlgorithm DIGESTER;
> Last change is this:
> #if FIPS_COMLIANT
> 					// use a FIPS compliant algorithm (see also http://blog.aggregatedintelligence.com/2007/10/fips-validated-cryptographic-algorithms.html
)
> 					DIGESTER = System.Security.Cryptography.SHA1.Create();
> #else
> 					// use the java compatible hash algorithm:
>  					DIGESTER = System.Security.Cryptography.MD5.Create();
> #endif
> I will attach the .patch to.

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