(SQL Server) PKCS7 Decrypt MIME

Loads a PKCS7 encrypted MIME file and decrypts. The cert and private key used for decryption is loaded from a PFX file.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @mime int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.Mime', @mime OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int

    EXEC sp_OAMethod @mime, 'UnlockComponent', @success OUT, 'Anything for 30-day trial.'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mime, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @mime
        RETURN
      END

    --  Load the MIME
    EXEC sp_OAMethod @mime, 'LoadMimeFile', @success OUT, 'encryptedMime.txt'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mime, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @mime
        RETURN
      END

    --  The AddPfxSourceFile and/or AddPfxSourceData
    --  methods may be called one or more times (one per PFX)
    --  to add sources from which the MIME component will
    -- search for certificates and private keys when decrypting.
    DECLARE @pfxPassword nvarchar(4000)
    SELECT @pfxPassword = 'myPassword'
    EXEC sp_OAMethod @mime, 'AddPfxSourceFile', @success OUT, 'myCertAndPrivateKey.pfx', @pfxPassword
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mime, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @mime
        RETURN
      END

    --  Decrypt...
    EXEC sp_OAMethod @mime, 'Decrypt', @success OUT
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mime, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @mime
        RETURN
      END

    --  Display the decrypted MIME:
    EXEC sp_OAMethod @mime, 'GetMime', @sTmp0 OUT
    PRINT @sTmp0

    EXEC @hr = sp_OADestroy @mime


END
GO