How to verify the file was successfully encrypted...
gdmr at inf.ed.ac.uk
Thu Jul 13 09:24:33 CEST 2006
> > BTW, why are you encrypting these files anyway? If someone broke into
> > your computer they could just steal the crypto key too.
> Excellent question! Truth be told, as soon as they are encrypted,
> they're being moved to another server in another location, and then are
> being burned to CD and moved to a safety deposit box.
How about if you append a hash of the file to the file, and encrypt that
too? Then have the remote machine do the trial decrypt-and-check-hash. If
all is OK the remote machine can then tell the local one to delete the
original; and if it's not OK, it can scream at you.
Dr George D M Ross, School of Informatics, University of Edinburgh
Kings Buildings, Mayfield Road, Edinburgh, Scotland, EH9 3JZ
Mail: gdmr at inf.ed.ac.uk Voice: +44 131 650 5147 Fax: +44 131 667 7209
PGP: 1024D/AD758CC5 B91E D430 1E0D 5883 EF6A 426C B676 5C2B AD75 8CC5
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