—— 请按键盘 空白键 开始游戏 ——

There is only one boss. The customer. And he can fire everybody in the company from the chairman on down, simply by spending his money somewhere else.
密码学中的挑战不仅仅是创建不可破解的代码,还包括创建即使技术发展也能保持安全的系统。