Re: Tests show that I don't understand how it works.
From: Kerry Brown (kerry_at_kdbNOSPAMsystems.c*o*m)
Date: 03/19/05
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Date: Fri, 18 Mar 2005 23:07:16 -0800
"M. Jennings" <mjennings@-NOTthis-or-dashes-myrealbox.com> wrote in message
news:uDATUkELFHA.1916@TK2MSFTNGP12.phx.gbl...
> I decided I just don't have enough information to use EFS. In the
> newsgroups there are many stories of people losing their information.
> Microsoft makes it easy to encrypt, and difficult to know how to make your
> files safe. The explanation of how it works is just not there.
>
> I ran EFSInfo on my test directory. Even though I deleted my personal
> certificate, the files are automatically decrypted. This shows that I
> don't understand how it works.
>
> Also, I'm worried about not being on a domain. I tried what you suggested
> before, with stand alone computers, and was not able to make it work.
>
> I cannot copy the test encrypted folder without decrypting the contents.
> It is suggested to use NTBackup for this, but NTBackup does not work on
> the two computers I tried. (I have only four computers here.) That's
> another of those knotty problems that could take many hours to debug.
>
> I don't understand why they say "Recovery Certificate", when supposedly
> the Recovery Certificate does not include the private key. With no private
> key, it is impossible to decrypt files.
>
EFS is not Microsoft's finest moment. The encryption/decryption works as
advertised. As you have found out making sure you can always decrypt it can
be a problem. I quit using it myself a couple of years ago. None of my data
is that sensitive. I do have to support people who use it though so I made
sure I knew the ins and outs. So far I've not lost any data. Came close once
when I thought I had a copy of the certificate. Turned out I didn't and the
computer it was on was wiped clean and sold. Luckily I had good backups but
it took most of a day to recover the certificate from the backup tape.
Good luck, take a look at PGP it may do what you want.
Kerry
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