Eckey privateKey, publicKey and sign verify
npm install eckey-util``bash`
npm i eckey-util --save
#### Create private key
`js`
const ECKey = require('eckey-util')
ECKey.createPrivate()
#### Get public key
`js`
ECKey.getPublicKey(privateKey)
#### Sign
`js`
let signed = ECKey.sign('Hello world!', privateKey)`
#### SignHashjs`
let signed = ECKey.signHash(ECKey.createHash('Hello world!'), privateKey)
#### Verify
`js`
ECKey.verify('Hello world!', signed, publicKey)
#### VerifyHash
`js``
ECKey.verifyHash(ECKey.createHash('Hello world!'), Buffer.from(signed, 'hex'), publicKey)