(SQL Server) Transition from Cert.ExportPrivateKey to Cert.GetPrivateKey

Provides instructions for replacing deprecated ExportPrivateKey method calls with GetPrivateKey.

Note: This example requires Chilkat v11.0.0 or greater.

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
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @cert int
    -- Use "Chilkat_9_5_0.Cert" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Cert', @cert OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- ------------------------------------------------------------------------
    -- The ExportPrivateKey method is deprecated:

    DECLARE @privatekeyObj int
    EXEC sp_OAMethod @cert, 'ExportPrivateKey', @privatekeyObj OUT
    EXEC sp_OAGetProperty @cert, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @cert, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @cert
        RETURN
      END

    -- ...
    -- ...

    EXEC @hr = sp_OADestroy @privatekeyObj

    -- ------------------------------------------------------------------------
    -- Do the equivalent using GetPrivateKey.
    -- Your application creates a new, empty PrivateKey object which is passed 
    -- in the last argument and filled upon success.

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

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

    EXEC @hr = sp_OADestroy @cert
    EXEC @hr = sp_OADestroy @privatekeyOut


END
GO