为我的C＃Windows应用程序提供SQL Server认证

Question

我有数据库，因此我使用TDE认证作为下面的代码对其进行加密

USE master;  
GO  
CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'MyPassword';  
go  
CREATE CERTIFICATE DBForCompanyEncrypt WITH SUBJECT = 'Certificate subject';  
go  
USE DBForCompany1;  
GO  
CREATE DATABASE ENCRYPTION KEY  
WITH ALGORITHM = AES_128  
ENCRYPTION BY SERVER CERTIFICATE DBForCompanyEncrypt;  
GO  
ALTER DATABASE DBForCompany1  
SET ENCRYPTION on;  
GO 

我使用下面的代码备份了主密钥和认证

BACKUP CERTIFICATE DBForCompanyEncrypt TO FILE ='F:\certification'  
      WITH PRIVATE KEY   
      (   
        FILE ='F:\PrivateKey',  
        ENCRYPTION BY PASSWORD ='MyPassword'   
      )  

，我放弃了认证，因此无法附加数据库，因此 如何仅向我的C＃Windows应用程序提供认证？