[](https://www.npmjs.org/package/eosjs-keygen)
# Repository
Provides hierarchical deterministic key generation, storage, and management.
General purpose cryptography is found in [eosjs-ecc](http://github.com/eosio/eosjs-ecc) library.
### Usage
```javascript
let {Keystore, Keygen} = require('eosjs-keygen')
Eos = require('eosjs')
sessionConfig = {
timeoutInMin: 30,
uriRules: {
'owner' : '/account_recovery',
'active': '/(transfer|contracts)',
'active/**': '/producers'
}
}
keystore = Keystore('myaccount', sessionConfig)
eos = Eos.Testnet({keyProvider: keystore.keyProvider})
Keygen.generateMasterKeys().then(keys => {
// create blockchain account called 'myaccount'
console.log(keys)
eos.getAccount('myaccount').then(account => {
keystore.deriveKeys({
parent: keys.masterPrivateKey,
accountPermissions: account.permissions
})
})
})
```
See [./API](./API.md)
# Development
```javascript
let {Keystore, Keygen} = require('./src')
```
Use Node v8+ (updates `package-lock.json`)
# Browser
```bash
git clone https://github.com/EOSIO/eosjs-keygen.git
cd eosjs-keygen
npm install
npm run build
# builds: ./dist/eosjs-keygen.js
```
```html
```
# Runtime Environment
Node 6+ and browser (browserify, webpack, etc)
Built with React Native in mind, create an issue if you find a bug.