Auto Logon Windows XP

I need to setup auto logon to an XP machine, I cannot use the standrad method by setting the registry entries or using Tweak as the password can be viewed as plain text. For this project the password must be stored as encrypted on the 开发者_运维百科PC. I have looked into modifying GINA.DLL and calling this through a .NET Application running as a service. Does anyone have any ideas on how to progress this?

All comments would be grateful

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I did work on a proxy GINA for one of our projects for automatic logon. The project was done in C++ ( infact all the calls that you can make at that level is pure c style calls )

To my understanding, you will not be able to use managed ( .NET ) code for GINA. GINA is loaded by Winlogon and is pretty early phase than loading services.

The custom Gina can be loaded using GinaDLL registry key under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

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There is a tool in SysInternals as Autologon.exe can help with autologon.