Re: Tweak UI - Password encryption and autologon
From: Doug Knox MS-MVP (dknox_at_mvps.org)
Date: 08/30/05
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Date: Tue, 30 Aug 2005 17:16:23 -0400
TweakUI does store the password in the Registry, un-encrypted.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
DefaultPassword
-- 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:2B5A2991-888F-4243-B69E-9F86B7132290@microsoft.com... > 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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