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# System prepended metadata

title: Frontend interview

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# Frontend interview
## 0. Preparation before interview
1. The common sence encrypt/hash and difference between encrypt and hash
2. The common sence about aes encryption algorithm
## 1. coding test (30min)

https://playcode.io/1015136

## 2. Brain Storming

### How do we secure the wallet mnemonic?

Situation: We store the mnemonic's plain text in storage now, and we need to find a solution to make it safety.

1. How do we store the wallet password?
2. How do we hide the mnemonic?
3. If we hide the mnemonic, how do we sign the transaction?
4. If we hide the mnemonic, how do we verify the mnemonic when we forget password?
5. Where can we store private data to protect users’ sensitive information?
