Authenticode os sth similiar in Gina

From: Jakub Gwozdz (gwozdziu_at_rpg.pl)
Date: 02/22/05

  • Next message: Tobias Johansson: "Re: Process.Start() in windows service on Windows Server 2003, problem" 
    Date: Tue, 22 Feb 2005 13:17:46 +0100

    Hi
    My custom CstmGina.dll loads CstmGinaRes.dll, which exports some
    resources. Loading is in run-time, by LoadLibrary.

    The point is, that I want to be sure, that CstmGinaRes.dll was not
    modified by anybody.
    So I think of using Authenticode, but AFAIK this technology is strictly
    tied to Internet Explorer, and may not work in winlogon context, without
    any user profile.

    I also think of placing the CstmGinaRes.dll's signature in separate file
    and verify'ing it before loading dll. But there is a potential security
    flaw - someone could change the CstmGinaRes.dll between LoadLibrary and
    my "LoadFileToVerifySignature" calls. Is there any way to verify the
    library in memory? Just by HMODULE?

    Best regards and thanks in advance
    Jakub Gwóźdź

  • Next message: Tobias Johansson: "Re: Process.Start() in windows service on Windows Server 2003, problem"

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