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File encryption........I love this topic !

Last response: in Windows XP
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January 29, 2005 1:13:32 AM

Archived from groups: microsoft.public.windowsxp.security_admin (More info?)

Hi All,

Hypothetical q for u:

I have 3 'puters all with 3 (same) users on them.

If I encrypt files on 'puter A, that users EFS certificate will be created
for 'puter A.

Now if I export that certificate to 'puter B before I encrypt any files on
'puter B,
will this imported certificate become the certificate for files encrypted on
'puter B
given that both 'puters are EFS'ing under the same account name and
passwords ?

I wouldn't have thought so, but would be interested to know how EFS deals
with
multiple combinations of machines / accounts.

I've asked b4 but lost the reply, what happens to a file that is EFS'ed on
one machine
then backed up to an EFS'ed (different) directory on another machine ?

In order to recover that data later, which EFS certificate / private key
set(s) do I need to
have backed up earlier ?

Thanks,

Neil
January 29, 2005 1:13:33 AM

Archived from groups: microsoft.public.windowsxp.security_admin (More info?)

Neil wrote:

> Hi All,
>
> Hypothetical q for u:
>
> I have 3 'puters all with 3 (same) users on them.
>
> If I encrypt files on 'puter A, that users EFS certificate will be
> created for 'puter A.
>
> Now if I export that certificate to 'puter B before I encrypt any
> files on 'puter B,
> will this imported certificate become the certificate for files
> encrypted on 'puter B
> given that both 'puters are EFS'ing under the same account name and
> passwords ?
>
> I wouldn't have thought so, but would be interested to know how EFS
> deals with
> multiple combinations of machines / accounts.
>
> I've asked b4 but lost the reply, what happens to a file that is
> EFS'ed on one machine
> then backed up to an EFS'ed (different) directory on another machine ?
>
> In order to recover that data later, which EFS certificate / private
> key set(s) do I need to
> have backed up earlier ?

Here is a link to a Microsoft site explaining all about encryption:

http://tinyurl.com/6l6xx

Read it carefully so that you do not make your data inaccessible at some
future date.

Malke
--
MS MVP - Windows Shell/User
Elephant Boy Computers
www.elephantboycomputers.com
"Don't Panic!"
Anonymous
January 29, 2005 1:13:33 AM

Archived from groups: microsoft.public.windowsxp.security_admin (More info?)

Neil wrote:

> (snip)
> I've asked b4 but lost the reply, what happens to a file that is
> EFS'ed on one machine then backed up to an EFS'ed (different)
> directory on another machine ?
Hi

This thread you mean:

http://groups.google.co.uk/groups?threadm=cm7b93%242s0l...




--
torgeir, Microsoft MVP Scripting and WMI, Porsgrunn Norway
Administration scripting examples and an ONLINE version of
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!