public string GetConnectionString()
        {
            var connectionString = _connectionStringProvider.Read();

            if (string.IsNullOrWhiteSpace(connectionString))
            {
                throw new Exception("impossible d'obtenir la chaine de connexion");
            }

            var builder = new DbConnectionStringBuilder();

            builder.ConnectionString = connectionString;

            if (!builder.ContainsKey("password"))
            {
                return(connectionString);
            }

            var password = builder["password"] as string;

            if (password.Contains("secret:"))
            {
                var decryptedPassword = DecryptStringFromBytes_Aes(Convert.FromBase64String(password.Remove(0, 7)), Key, Iv);
                builder["password"] = decryptedPassword;
                return(builder.ConnectionString);
            }

            builder["password"] = "******" + Convert.ToBase64String(EncryptStringToBytes_Aes(password, Key, Iv));
            _connectionStringProvider.Write(builder.ConnectionString);

            return(connectionString);
        }