# File lib/omniauth/strategies/oauth2/renren.rb, line 42
      def signed_params
        params = {}
        params[:api_key] = client.id
        params[:method] = 'users.getInfo'
        params[:call_id] = Time.now.to_i
        params[:format] = 'json'
        params[:v] = '1.0'
        params[:uids] = session_key['user']['id']
        params[:session_key] = session_key['renren_token']['session_key']
        params[:sig] = Digest::MD5.hexdigest(params.map{|k,v| "#{k}=#{v}"}.sort.join + client.secret)
        params
      end