發送短信

數:

提供者:

CAPTCHA:

__    __     ___     __   _    _    _     _____   
\ \\ / //   / _ \\  | || | || | || | ||  / ____|| 
 \ \/ //   / //\ \\ | '--' || | || | || / //---`' 
  \  //   |  ___  ||| .--. || | \\_/ || \ \\___   
   \//    |_||  |_|||_|| |_||  \____//   \_____|| 
    `     `-`   `-` `-`  `-`    `---`     `----`

Please enter what you see:

發送短信 : A scalable signature scheme for video authentication