node-eth-address

Ethereum Address Generator - Node

Generate private key and its associated ethereum address

Getting Started

These instructions will provide you a copy of the module and run in your application so that the clients can create their own private keys and ethereum compliance addresses.

Prerequisites

node: ">=4.2.4"
npm

Installation

npm install node-eth-address --save

Usage

getDefaultAddress()

var nodeEth = require('node-eth-address');

/** 
This password encrypts your private key. This does not act as a seed 
to generate your keys. You will need this password + your private key
to unlock your wallet
*/
var password = 'test@123'; 
var address = nodeEth.getDefaultAddress(password);
/*
{ 
    /* Your ethereum address */
    address: '0xc4d5895cdEd9477018Bcc53F524F8B17e2C3C884',

    /* Your private key */
    privateKey: '0x6371262b577bfb2b36b82e493dd89b00bae550539a890feefdb6c2012d0e89fc',

    /* Your JSON Keystore - make a Json file and store on your local computer */
    keyStore: { 
        address:"0xc4d5895cdEd9477018Bcc53F524F8B17e2C3C884",
        crypto: {
            cipher:"aes-128-ctr",
            ciphertext:"08b0de1bff09f3d4077c135ece5f3140055a66e626ff9f072f670b4840a4645a",
            cipherparams: {
                iv:"51294c8fd947c401f470c16ac9d55f0b"
            },
            mac:"34abb6c37420facd36eb4474e9c849580dc5d51e5d5c7cf453ba32980f9b7389",
            kdf:"pbkdf2",
            kdfparams: {
                c:262144,
                dklen:32,
                prf:"hmac-sha256",
                salt:"a9a18a01e2e468f85f6d003a4c20a9f3da897b2130df3a7fe7df8b40644f4d6b"
            }
        },
        id:"5e4df928-5693-4b9e-a849-2bc812b9ce16",
        version:3
 	} 
}
*/

getEthereumAddress()

/* To generate ethereum address from private key  */

var privateKey = '0x6371262b577bfb2b36b82e493dd89b00bae550539a890feefdb6c2012d0e89fc'; 
var ethAddress = nodeEth.getEthereumAddress(privateKey);
/*
    0xc4d5895cdEd9477018Bcc53F524F8B17e2C3C884
*/

validateAddress()

/* To Validate ethereum address */

var address = '0xc4d5895cdEd9477018Bcc53F524F8B17e2C3C884'; 
var isValid = nodeEth.validateAddress(address);
/*
    true or false
*/

recoverPrivateKey()

/* 
To recover private key from Keystore Json file 
and password which was used to generate address 
*/

var password = 'test@123';
var keyStore: { 
    address:"0xc4d5895cdEd9477018Bcc53F524F8B17e2C3C884",
    crypto: {
        cipher:"aes-128-ctr",
        ciphertext:"08b0de1bff09f3d4077c135ece5f3140055a66e626ff9f072f670b4840a4645a",
        cipherparams: {
            iv:"51294c8fd947c401f470c16ac9d55f0b"
        },
        mac:"34abb6c37420facd36eb4474e9c849580dc5d51e5d5c7cf453ba32980f9b7389",
        kdf:"pbkdf2",
        kdfparams: {
            c:262144,
            dklen:32,
            prf:"hmac-sha256",
            salt:"a9a18a01e2e468f85f6d003a4c20a9f3da897b2130df3a7fe7df8b40644f4d6b"
        }
    },
    id:"5e4df928-5693-4b9e-a849-2bc812b9ce16",
    version:3
    } 

var privateKey = nodeEth.recoverPrivateKey(password,keyStore);
/*
    0x6371262b577bfb2b36b82e493dd89b00bae550539a890feefdb6c2012d0e89fc
*/

Author

• Vinay Singh

License

This project is licensed under the MIT License - see the LICENSE file for details