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CAPICOM support on Windows Vista

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I know there has been a lot of confusion about this, because some articles on the web (i.e. MSDN) say CAPICOM is not supported on Vista, while others say it is.

I have good news for you people, especially for those who want to do cryptographic operations from scripting: CAPICOM is officially supported on Vista, but only on its version 2.1.0.2.

This version can be downloaded from here:

Platform SDK Redistributable: CAPICOM
https://www.microsoft.com/downloads/details.aspx?FamilyID=860ee43a-a843-462f-abb5-ff88ea5896f6&DisplayLang=en

(Note: at the time of this writing, this article DOES NOT say that CAPICOM is supported on Vista).

This new version of CAPICOM was released, among other reasons, because of a security update on CAPICOM:

Security Update for CAPICOM (KB931906)
https://www.microsoft.com/downloads/details.aspx?FamilyId=CA930018-4A66-4DA6-A6C5-206DF13AF316&displaylang=en

(Note: this article DOES say that CAPICOM is supported on Vista) 

 

If we try to use version 2.1.0.1 on Vista, for instance, a small .NET sample which uses CAPICOM like the following:
"
StoreClass store = new StoreClass();
store.Open(CAPICOM_STORE_LOCATION.CAPICOM_SMART_CARD_USER_STORE, null, CAPICOM_STORE_OPEN_MODE.CAPICOM_STORE_OPEN_READ_WRITE);
"
Will return the following exception:
"
System.Runtime.InteropServices.COMException (0x80880900): Exception from HRESULT: 0x80880900
"
Which means:
"
# for hex 0x80880900 / decimal -2138568448
CAPICOM_E_NOT_SUPPORTED capicom.h
"

Anyway, my recommendation is to use .NET Framework classes instead of CAPICOM whenever possible.

I hope this helps.

Cheers,

 

Alex (Alejandro Campos Magencio)

Comments

  • Anonymous
    January 22, 2008
    The comment has been removed
  • Anonymous
    February 07, 2008
    Sorry for the late response. Too busy these days. I will always recommend to use .NET instead of CAPICOM. X509Store (http://msdn2.microsoft.com/en-us/library/system.security.cryptography.x509certificates.x509store.aspx) would be the class you are seeking.I hope this helps.Regards,Alex
  • Anonymous
    November 23, 2008
    There are not everyone intalled .net Framework,and I must signed data on client,how to do?
  • Anonymous
    June 03, 2009
    Hi,I wonder if anyone can help me.Recently, a Vista machine running a VB6 application as Standard User failed to start up and there seems to be an error related to the capicom dll (note: on my development machine it works fine with UAC turned on).The application on this Vista machine uses CAPICOM to verify the digital signature of a dll before loading the application.  However, when running the VB6 application elevated with Admin privileges the application loads successfully.I don’t know why but maybe because of the standard/admin user token. Do you have and suggestions why it works if I elevate privilege?
  • Anonymous
    June 04, 2009
    Sorry, but there is not enough info to know what's going on. You may use Process Explorer tool (you can download it for free from our web) to monitor the application and see if any access to the file system or registry returns Access Denied error. Maybe the standard user has no access to the file storing the signing keys...
  • Anonymous
    June 08, 2009
    Hi,I have a web application in which I use capicom to sign HTML form data on client side using digital certificates installed on the client machine. How can I achieve same functionality with .NET code if I have to avoid using CAPICOM? Essentially is it possible to run classes in pkcs name space of .NET on client side from within browser? If yes, any samples for invoking .NET functionality on client from within a web application is very helpful.Regards,Hari
  • Anonymous
    March 16, 2010
    Compile as x86, it works, seems to be problems in windows 7, vista x64 systems.
  • Anonymous
    March 24, 2010
    Hola, quisiera que alguien me ayudara sobre el tema de las librerías CAPICOM, en lo referente al uso de la firma con el dni electrónico, ¿hay en realidad alguna versión de las librerías CAPICOM que funcione con el sistema operativo Windows 7 Home Premium?. Para en el caso de que las haya descargármelas, pero si no es así, me ahorro el tener que descargármelas y que no me funcione.Gracias.
  • Anonymous
    March 24, 2010
    Hola Eva,CAPICOM no esta soportado en Windows 7, como comente en este otro post:http://blogs.msdn.com/alejacma/archive/2009/10/15/capicom-support-on-windows-7.aspxUn saludo,Alex
  • Anonymous
    March 25, 2010
    Hola Alex, gracias por tu respuesta, me ha sido muy útil.Un saludo.