# NCtfU - 2024/5/14 (basic crypto) (A204)
###### tags: `新手場` `nctfu2024spring`
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:::info
講者 tommy
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### 線上提問連結
[slido](https://app.sli.do/event/9kNKxtexU3fdWDPTrVmhk1)

### 錄影連結
[錄影](https://youtu.be/EMciSpeaRGg)

### 講者簡報
[簡報 PDF](https://docs.google.com/presentation/d/1srNIuSwwxERrne3A-Ac36iQHTzVS97v-60lZgEJWeO4/edit?usp=sharing)

## 共筆

### Hash

#### 攻擊
- Birthday Attack
- 字典攻擊
- 彩虹表攻擊
### linux command
* 對稱加密

openssl enc -[block_cipher]-[key_len]-[block_mode] -e -in [input] -out [output]