加密连接字符串，以便其他开发人员无法解密，但应用程序仍然可以访问

I have a database that I want to access via a .NET web application. I can encrypt the connection string in web.config easily enough, but any developer with access to the box can decrypt it with a few lines of code - they have access to the box, so therefore have access to the encryption key stored in machine.config.I have a database that I want to access via a .