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[EP-tech] Verifying Checksums

Hi,

found a mailing list post by David Tarrant created in 2010
>> Verify hashes / checksums
> Can be both done by the storage or you can do it from EPrints using a > event module, this code is not yet in the public domain cos I haven't > written it yet, but it would be about 20 lines I recon. 
URL: http://www.eprints.org/tech.php/thread-14292.html
How are things now? Does EPrints warn automatically if a file differs in respect to the checksum from the state stored in the database? 
How can I arrange for EPrints to do that?
Does the EPrints ex-/import xml format have a file-associated element "hash" or alike (guess for every dataobj field you can have a corresponding field, right?) that is verified upon downloading the file from another server? Would really appreciate that, but according to DataObj::File source, there aren't yet any verification methods for sha/md5. 

Kind regards,
F Heß

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