diff --git a/scripts/lib/upt.lua b/scripts/lib/upt.lua
new file mode 100644
index 0000000..e9d71e5
--- /dev/null
+++ b/scripts/lib/upt.lua
@@ -0,0 +1,20 @@
+-- 指定模块引用目录，否则无法加载同目录下的其他文件
+--package.path = package.path .. ';/usr/local/opt/openresty/nginx/scripts/?.lua';
+package.path = package.path .. ';<SCRIPT_PATH>/?.lua';
+
+local _M = {}
+
+--local strip_path = require("strip_path")
+--local Upyun = require('upyun')
+
+function _M.upt(uri) {
+    local secret = ngx.var.upt_secret
+    local duration = ngx.var.upt_duration
+    local etime = os.time() + duration
+    local sign = ngx.md5(secret .. '&' .. etime .. '&' .. uri)
+    ngx.log(ngx.ERR, 'sign...' .. sign .. ' etime..' .. etime)
+    local upt = string.sub(sign, 13, 13 + 7) .. etime
+    ngx.say(upt)
+}
+
+return _M
\ No newline at end of file