Connect with AWS from C # winform

I have an Application written in C# winform and the database ( SQLSERVER EXPRESS ) is in AWS (Amazon Web Services). I'm using a connection string like this:

namespace Datos  
{
    public class Configuracion
    {
        static private string cadenaConexion = 
            "Server=awsdb.ch13dwiieryvs.us-east-21.rds.amazonaws.com,1433;Database=dbforTest;User Id=UserName;Password=UserPass*;";  

        public static string CadenaConexion
        {
            get { return Configuracion.cadenaConexion; }  
        }  
    }  
}  

What options do I have to protect my connection data and travel safely every time a request is made to the server on the web? What I want is to achieve an encryption of my credentials or something similar. Is there a way to achieve it?