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How to Export & Import Encryption Keys

Posted on 2011-10-05
Medium Priority
Last Modified: 2012-05-12
Summary - I exported the encryption key & certificate to another computer but can't open files there.

Details - I'm running the XP-P with SP3 on two workgroup networked computers. I have successfully encrypted and decrypted files and folders on computer 1 using EFS (right click folder-properties-advanced-appropriate checkbox, etc.). Then I shared the folder for editing on computer 2.  The folder is now viewable on computer 2 but of course I get "access denied" when I try to open a file.

So I exported the personal key from computer 1 via the Internet Explorer (IE-tools-Internet options-content tab-certificates-personal-select-export-next-export private key-next-strong protection-next-set password-next-browse for location to save the PFX file, etc.). Then I installed the key (the PFX file on computer 2 by double clicking it there selecting "make it transportable" and verify that it is now listed in the "personal" keys using the Internet Explorer).

Then I restarted computer 2 and expected be able to open the encrypted files on stored computer 1, but I still get "access denied". What am I doing wrong? I read lots of posts here and much from Microsoft. Help appreciated?
Question by:WaterSkiLake
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Expert Comment

by:Bryan Butler
ID: 36920490

Author Comment

ID: 36920674
DevelopedTester - yes, as well as what I described, as well as MMC.  None worked, strange!

Author Comment

ID: 36921882
Folks, I'm beginning to think that you can't get access to an encrypted file that is shared.  Is that perhaps the problem?  
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Accepted Solution

WaterSkiLake earned 0 total points
ID: 36926923
Here is the answer from the person who asked the question.  

You can share encrypted files (not folders) with another person on the same computer by adding the certificate to the file - right click the File, Properties, Advanced, Details Button, Add the Certificate from the appropriate user.  

You can share encrypted files and folders between two computers but in this case you need to manually move the files to the other computer along with the certificate and key, using certmgr.msc.
You can share and encrypted files or folders between two computers but they can only be accessed from the computer that you encrypted them on - even if you move the Certificates and Keys.

see - http://windows.microsoft.com/en-US/windows-vista/Share-encrypted-files 

Author Closing Comment

ID: 36947407
I answered this because no one else did.
LVL 16

Expert Comment

by:Bryan Butler
ID: 36933778
Good to know. Thanks for the info.  

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