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Re: Decrypt File
From: "Brian Nottle" <bnottle () telus net>
Date: Fri, 16 May 2003 16:19:14 -0700

Tried Google and got for my first hit
http://www.crackpassword.com/products/prs/otherms/efs/

Elcomsoft apparently offer a range of Password
recovery software. Havn't tried any of it myself,
but seems worth a try.

Brian Nottle
----- Original Message ----- 
From: "Jim Barrett" <jimb () ins com>
To: "'James Yang'" <guanghuyang () yahoo com cn>;
<security-basics () securityfocus com>
Sent: Thursday, May 15, 2003 11:43 AM
Subject: RE: Decrypt File


You may be out of luck.

If your W2K system is a member of a domain and you have Cert Services
running, you probably tied your encrypt/decrypt key to your domain
account.  There is also a recovery agent key created and it may be
assigned to someone in your company.

On the other hand, if this is a standalone workstation you are in
trouble.  When you use EFS on a standalone box, two copies of the
encrypt/decrypt keys are created.  One is tied to the user account that
did the encryption and the other to the local Admin account.

If you did a full backup and restore (including all of the W2K system
files) this should work.  If you only backed up your data files and then
wiped and rebuilt the system, it is not going to work as you wiped out
the encrypt/decrypt keys when you wiped out the OS.

Sorry...

-----Original Message-----
From: James Yang [mailto:guanghuyang () yahoo com cn]
Sent: Wednesday, May 14, 2003 11:39 PM
To: security-basics () securityfocus com
Subject: Decrypt File



   My system occured problem yesterday.I backuped my files and then

reinstalled my W2K system.After I copied back my files I found I
couldn't

open the encrypted files.

    How can I open, could anyone give me a tip.

    Thanks.

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Vigilar's industry leading curriculum includes:  Security +, Check Point,
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Vigilar's industry leading curriculum includes:  Security +, Check Point, 
Hacking & Assessment, Cisco Security, Wireless Security & more! Register Now!
--UP TO 30% off classes in select cities-- 
http://www.securityfocus.com/Vigilar-security-basics
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