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(SQL Server) PKCS11 Certificate Chain

See more PKCS11 Examples

Demonstrates how to make CA certs available for the certificate chain to be included when creating a signature (using a PKCS11 compatible smart card / USB token) such as for PDF, XMLDSig, etc.

Note: This example requires Chilkat v9.5.0.88 or later.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- This example requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    -- Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

    DECLARE @pkcs11 int
    -- Use "Chilkat_9_5_0.Pkcs11" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Pkcs11', @pkcs11 OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- You will use the DLL (or shared lib) provided by your smart card vendor, or a DLL compatible with your smart card.
    -- On Windows, if the DLL is located in C:\Windows\System32, specify only the filename.
    -- Otherwise provide the full path.
    EXEC sp_OASetProperty @pkcs11, 'SharedLibPath', 'bit4xpki.dll'

    DECLARE @success int
    EXEC sp_OAMethod @pkcs11, 'Initialize', @success OUT
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @pkcs11, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @pkcs11
        RETURN
      END

    -- Pass -1 for the slotID to open a session on the first non-empty slot.
    DECLARE @slotID int
    SELECT @slotID = -1

    -- Open a session.
    DECLARE @readWrite int
    SELECT @readWrite = 1
    EXEC sp_OAMethod @pkcs11, 'OpenSession', @success OUT, @slotID, @readWrite
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @pkcs11, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @pkcs11
        RETURN
      END

    -- Make it an authenticated session by calling Login.
    DECLARE @userType int
    SELECT @userType = 1
    -- Make sure to use the correct PIN for your smart card..
    DECLARE @pin nvarchar(4000)
    SELECT @pin = '0000'
    EXEC sp_OAMethod @pkcs11, 'Login', @success OUT, @userType, @pin
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @pkcs11, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC sp_OAMethod @pkcs11, 'CloseSession', @success OUT
        EXEC @hr = sp_OADestroy @pkcs11
        RETURN
      END

    -- Get the certificate (on the smart card) that has a private key.
    DECLARE @cert int
    -- Use "Chilkat_9_5_0.Cert" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Cert', @cert OUT

    EXEC sp_OAMethod @pkcs11, 'FindCert', @success OUT, 'privateKey', '', @cert
    IF @success = 1
      BEGIN

        EXEC sp_OAGetProperty @cert, 'SubjectCN', @sTmp0 OUT
        PRINT 'Cert with private key: ' + @sTmp0
      END
    ELSE
      BEGIN

        PRINT 'No certificates having a private key were found.'
        EXEC sp_OAMethod @pkcs11, 'CloseSession', @success OUT
        EXEC @hr = sp_OADestroy @pkcs11
        EXEC @hr = sp_OADestroy @cert
        RETURN
      END

    -- If the certificates in the chain of authentication were contained on the smart card,
    -- then Chilkat would already have them (via the FindCert function) and the certs in the chain will be automatically used
    -- as needed when signing occurs.

    -- If you have CA certs located elsewhere, such as in .cer files, you can make them available to Chilkat in the following way:

    DECLARE @certVault int
    -- Use "Chilkat_9_5_0.XmlCertVault" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.XmlCertVault', @certVault OUT

    -- Please review the methods available in the XML certificate vault class.  Different methods exist for adding certificates
    -- from various sources, such as PEM, PFX, or in-memory sources..
    EXEC sp_OAMethod @certVault, 'AddCertFile', @success OUT, 'someDir/caIntermediateCert.cer'
    -- ...
    EXEC sp_OAMethod @certVault, 'AddCertFile', @success OUT, 'someDir/caCert.cer'
    -- (Your code should check the return value to make sure it succeeded.)

    EXEC sp_OAMethod @cert, 'UseCertVault', @success OUT, @certVault
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @cert, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC sp_OAMethod @pkcs11, 'CloseSession', @success OUT
        EXEC @hr = sp_OADestroy @pkcs11
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @certVault
        RETURN
      END

    -- --------------------------------------------------------------------------
    -- At this point, we have the cert (and certs in the chain of authentication) to be used for signing.
    -- The code for using the certificate in creating the digital signature, such as for a PDF, XML, etc., go here...

    -- --------------------------------------------------------------------------

    -- Revert to an unauthenticated session by calling Logout.
    EXEC sp_OAMethod @pkcs11, 'Logout', @success OUT
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @pkcs11, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC sp_OAMethod @pkcs11, 'CloseSession', @success OUT
        EXEC @hr = sp_OADestroy @pkcs11
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @certVault
        RETURN
      END

    -- When finished, close the session.
    -- It is important to close the session (memory leaks will occur if the session is not properly closed).
    EXEC sp_OAMethod @pkcs11, 'CloseSession', @success OUT
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @pkcs11, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @pkcs11
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @certVault
        RETURN
      END


    PRINT 'Success.'

    EXEC @hr = sp_OADestroy @pkcs11
    EXEC @hr = sp_OADestroy @cert
    EXEC @hr = sp_OADestroy @certVault


END
GO

 

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