How to generate Ethereum private key and address in local (offline) environment

• I used this way when I needed to generate multiple Ethereum private keys and addresses for development.
• With ethereumjs-wallet, you can generate Ethereum private keys and addressed very easily.
• You can run the code in your local (offline) environment, of course.

Install ethereumjs-wallet

$ npm install ethereumjs-wallet --save

Code example

var Wallet = require('ethereumjs-wallet');
const wallet = Wallet.generate();
console.log("privateKey: " + wallet.getPrivateKeyString());
console.log("address: " + wallet.getAddressString());

Run the code

You can run the code with the following command when you name the code above “app.js”.

$ node app.js

References

• http://blog.playground.io/entry/2018/05/03/070436
• https://github.com/ethereumjs/ethereumjs-wallet

Support

If you find this article is helpful, it would be greatly appreciated if you could tip Ether to the address below. Thank you!

0x0089d53F703f7E0843953D48133f74cE247184c2