AcessoDados.EngineFactory.DecriptaString C# (CSharp) Метод

        public string DecriptaString(string texto)
        {
            string TextoDecriptado;

            TextoDecriptado = Encoding.Unicode.GetString(Convert.FromBase64String(texto));
            return TextoDecriptado;
        }

 /// <summary>
 /// Define as configuraçoes basicas do objeto
 /// </summary>
 public Engine(string str, Banco banco)
 {
     factory = new EngineFactory(banco);
     connectionString = factory.DecriptaString(str);
     dbCommand = factory.CriarCommand();
     dbConnection = factory.CriarConnection(connectionString);
 }