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