Re: Tweak UI - Password encryption and autologon

From: Larry Williams (LarryWilliams_at_discussions.microsoft.com)
Date: 08/30/05 

Date: Tue, 30 Aug 2005 13:48:02 -0700

Okay. Thanks.

I was hoping the Tweak stored your password in the registry but I wasn't
able to find it.

I read chapter 15 of the MS XP Registry Guide and plan on seting this up
just before the restart and including an entry for the "AutoLogonCount" of 1
so the information is automatically removed after the restart.

"Doug Knox MS-MVP" wrote:

> You can't. The autologon feature expects to see a plaintext password. You're only option would be to write a custom GINA DLL for authentication that would know how to decrypt the stored password.
>
> --
> Doug Knox, MS-MVP Windows Media Center\Windows Powered Smart Display\Security
> Win 95/98/Me/XP Tweaks and Fixes
> http://www.dougknox.com
> --------------------------------
> Per user Group Policy Restrictions for XP Home and XP Pro
> http://www.dougknox.com/xp/utils/xp_securityconsole.htm
> --------------------------------
> Please reply only to the newsgroup so all may benefit.
> Unsolicited e-mail is not answered.
>
> "Larry Williams" <LarryWilliams@discussions.microsoft.com> wrote in message news:84365F2D-EEF9-409F-85D4-B2813F7F4C6B@microsoft.com...
> > I'm writing a program that will accept a userid and password to do an
> > autologon after a restart using the following registry entries:
> >
> > HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon
> >
> > DefaultUserName "your_username"
> > DefaultPassword "your_password"
> > AutoAdminLogon "1"
> >
> > However, if for some reason my program doesn't run properly and remove the
> > userid/password when it's finished then I want to ensure that the password
> > can't just be read from the registry. Therefore I need to know how to do the
> > same thing that Tweak UI does and store an encrypted version of the password.
> >
> > Any ideas?
>

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