---
# System prepended metadata

title: '[AIdrifter CS 浮生筆錄](https://hackmd.io/bKL1LVo8RaCKn02uHJW2BA#) Crypto'

---

# [AIdrifter CS 浮生筆錄](https://hackmd.io/bKL1LVo8RaCKn02uHJW2BA#) Crypto

## What’s digital signature(數位簽名) and digital certificate（數位證書）
-[數字簽名是什麼-阮一峰](http://www.ruanyifeng.com/blog/2011/08/what_is_a_digital_signature.html)

![](https://i.imgur.com/PSNMV38.png =x1000)



## 介紹對稱式(symmetric)與非對稱式(asymmetric)的差異
## 常見AES演算法
## 常見非對稱式加解密