以太坊 助记词提取 帐户 公钥 私钥 最新实现可用。

step 1 装依赖的包(npm/yarn 本身选一个)：

yarn add bip39 ethereumjs-wallet ethereumjs-util 

npm install bip39 ethereumjs-wallet ethereumjs-util

step 2 演示代码：

const bip39 = require('bip39')
const {hdkey} = require('ethereumjs-wallet')
const util = require('ethereumjs-util')

//1 生成助记词 ；1.1 和 1.2 本身按需。

// 1.1 生成助记词 ;这里用生成的.
// let mnemonic = bip39.generateMnemonic() 

// 1.2 生成助记词 ;这里用写死的.
let mnemonic = "hold scale hybrid tank dilemma bullet ship language attitude rug tennis host"
console.log(mnemonic)

//2.将助记词转成seed
getSeed = async ()=>{
    let seed = await bip39.mnemonicToSeed(mnemonic)
    console.log("seed：" + util.bufferToHex(seed))
    return seed
}
//3.提取私钥，公钥，帐户
obtainAccount = async ()=>{
    let seed = await getSeed()
    //3.经过hdkey将seed生成HD Wallet
    let hdWallet = await hdkey.fromMasterSeed(seed)

    for (let i = 0; i < 10; i++) {
        //4.生成钱包中在m/44'/60'/0'/0/i路径的keypair
        let key = await hdWallet.derivePath("m/44'/60'/0'/0/" + i)
        //5.从keypair中获取私钥
        console.log("私钥：" + util.bufferToHex(key._hdkey._privateKey))
        //6.从keypair中获取公钥
        console.log("公钥：" + util.bufferToHex(key._hdkey._publicKey))
        //7.使用keypair中的公钥生成地址
        let address = await util.pubToAddress(key._hdkey._publicKey, true)
        //编码地址
        console.log('account',i+1,'0x'+address.toString('hex'))

//分割线        console.log("__________________________________________________________")
    }
}
obtainAccount()

step 3 运行结果截图：