【现代密码学】笔记4--消息认证码与抗碰撞哈希函数《introduction to modern cryphtography》 写在最前面4 消息认证码与抗碰撞哈希函数MAC概念回顾(是的,我忘记这些缩写是什么了。。)MAC的定义适应性CMA(Chosen Message Attack&a…
原文:2 Building Abstractions with Data 译者:飞龙 协议:CC BY-NC-SA 4.0 我们现在来到数学抽象的决定性步骤:我们忘记符号代表什么。…[数学家]不需要闲着;他可以用这些符号进行许多操作,而无需看它们所代…
LIDAR 101
What is lidar?
Lidar (light detection and ranging) uses eye-safe laser beams to “see” the world in 3D, providing machines and computers an accurate representation of the surveyed environment.
How Does Lidar Work? A typical lidar sensor emi…