UTV - URL Tag Validation

What`s UTV

　　1、URL Tag Validation

　　2、Special format of URL for preventing unauthorized usage and access

 

 

sample

　　Original: http://www.baidu.com/2016/0704/8025915_HD-60i_7198.mp4

　　Using UTV:http://www.baidu.com/2016/0704/8025915_HD-60i_7198.mp4?px-time=1467685158&px-hash=a08a3c149514aae2aea14755a45a29c2

 

　　px-time : current time or expire time

　　px-hash : hash(secret + url_path +expire_time)