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'''Pictures'''
A '''GINA''' is a '''graphical identification and authentication''' library, which provides secure [[login]] services on [[Microsoft Windows]] operating systems. Only those systems based on the [[Windows NT]] [[kernel (computer science)|kernel]] have such libraries; the [[Windows 95]] family and earlier did not have mandatory logon.
[[Image:382483 2.jpg]]
Winlogon is the component responsible for handling the default [[secure attention key]], loading the user profile on logon, and optionally locking the computer when a [[screensaver]] is running (requiring another authentication step). The actual obtaining and verification of user credentials is left to the GINA.
The default GINA is provided by Microsoft as part of the operating system, and offers authentication against Windows ___domain servers with a supplied user name/password combination. Winlogon can be configured to use a different GINA, providing for non-standard authentication methods (like [[smart card]] readers or identification based on [[biometrics]], for example).
==Exported Functions==
ShellShutdownDialog 29, WlxActivateUserShell 30, WlxDisconnectNotify 31, WlxDisplayLockedNotice 32, WlxDisplaySASNotice 33, WlxDisplayStatusMessage 34, WlxGetConsoleSwitchCredentials 35, WlxGetStatusMessage 36, WlxInitialize 37, WlxIsLockOk 38, WlxIsLogoffOk 39, WlxLoggedOnSAS 40, WlxLoggedOutSAS 41, WlxLogoff 42, WlxNegotiate 43, WlxNetworkProviderLoad 44, WlxReconnectNotify 45, WlxRemoveStatusMessage 46, WlxScreenSaverNotify 47, WlxShutdown 48, WlxStartApplication 49, WlxWkstaLockedSAS 50
==External link==
*[http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthn/security/winlogon_and_gina.asp Winlogon and GINA], developer information on how the login components interact
*[http://msdn.microsoft.com/msdnmag/issues/05/05/SecurityBriefs/ Customizing Gina Tutorial], developer tutorial for developing ones own GINA.
[[Category:Computer security]]
[[Category:Microsoft Windows]]
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