Winlogon and Credential Providers
For information about implementing a Credential Provider, see the following topics.
Overview of Winlogon and Credential Provider architecture and a sample Credential Provider.
Credential Provider interface reference.
For a sample Credential Provider implementation, see the sample located in the Windows SDK installation directory under \Samples\Security\CredentialProvider.
Windows Server 2003 and Windows XP: Credential Providers are not supported. For information about customizing Winlogon, see Winlogon and GINA.