code: def get_jssign_package(url)
        timestamp = Time.now.to_i
        noncestr = SecureRandom.hex(16)
        str = "jsapi_ticket=#{get_jsticket}&noncestr=#{noncestr}&timestamp=#{timestamp}&url=#{url}";
        signature = Digest::SHA1.hexdigest(str)
        {
          "appId"     => app_id,    "nonceStr"  => noncestr,
          "timestamp" => timestamp, "url"       => url,
          "signature" => signature, "rawString" => str
        }
      end
docs: 获取js sdk 签名包