基于 BIP39 协议创建 Ethereum HD Wallet

骑猪看日落 2022-05-20 05:59 125阅读 0赞

# 基于 BIP39协议创建 Ethereum HD Wallet #

## 初始化 Ethereum HD Wallet 项目 ##

1.  在终端创建`wallet`文件夹，并进入该文件夹下面

shanglishuaideMacBook-Pro:workspace shanglishuai$ mkdir wallet
    shanglishuaideMacBook-Pro:workspace shanglishuai$ cd wallet/
    shanglishuaideMacBook-Pro:wallet shanglishuai$ pwd 
    /Users/shanglishuai/workspace/wallet
    shanglishuaideMacBook-Pro:wallet shanglishuai$

1.  初始化`wallet`项目
    
     *  语法：`npm init`
     *  示例：

shanglishuaideMacBook-Pro:wallet shanglishuai$ npm init 
    This utility will walk you through creating a package.json file.
    It only covers the most common items, and tries to guess sensible defaults.
    
    See `npm help json` for definitive documentation on these fields
    and exactly what they do.
    
    Use `npm install <pkg>` afterwards to install a package and
    save it as a dependency in the package.json file.
    
    Press ^C at any time to quit.
    package name: (wallet) wallet
    version: (1.0.0) 
    description: 
    entry point: (index.js) 
    test command: 
    git repository: 
    keywords: 
    author: 
    license: (ISC) 
    About to write to /Users/shanglishuai/workspace/wallet/package.json:
    
    {
      "name": "wallet",
      "version": "1.0.0",
      "description": "",
      "main": "index.js",
      "scripts": {
        "test": "echo \"Error: no test specified\" && exit 1"
      },
      "author": "",
      "license": "ISC"
    }
    
    
    Is this OK? (yes) yes 
    shanglishuaideMacBook-Pro:wallet shanglishuai$

## 引入javaScript套件 ##

语法：`npm install bip39 ethereumjs-wallet ethereumjs-util --save`  
说明：  
`bip39` ：实作 BIP39，随机产生新的 mnemonic code（助记词），并可以将其转成 binary 的 seed。  
`ethereumjs-wallet` ：产生和管理公私钥，我使用其中的 hdkey 子套件来创建 HD Wallet。  
`ethereumjs-util`：集合许多 Ethereum 需要的运算功能。

## 创建`wallet.js`编写钱包程序 ##

代码示例：

var bip39 = require('bip39');
    var hdkey = require('ethereumjs-wallet/hdkey');
    var util = require('ethereumjs-util');
    
    
    var mnemonic = bip39.generateMnemonic();
    console.log("助记词" + mnemonic);
    
    
    var seed = bip39.mnemonicToSeed(mnemonic);
    
    
    var hdWallet = hdkey.fromMasterSeed(seed);
    
    var key1 = hdWallet.derivePath("m/44'/60'/0'/0/0");
    
    
    var address1 = util.pubToAddress(key1._hdkey._publicKey, true);
    console.log("以太地址-转换前" + address1);
    
    
    address1 = util.toChecksumAddress(address1.toString('hex'));
    console.log("以太地址-转换后:" + address1);

## 运行测试 ##

语法：`node wallet.js`  
示例：

shanglishuaideMacBook-Pro:wallet shanglishuai$ node wallet.js 
    助记词:lyrics miracle muffin harsh unfair congress window soldier lady strategy debris basket
    以太地址-转换前:x��hL��*���
    r�S��
    以太地址转换后:0x78c4db684CA3Ff2a9ae398ea0A72dC531BaCAc2B
    shanglishuaideMacBook-Pro:wallet shanglishuai$

参考链接：  
[https://ethfans.org/posts/from-BIP-to-ethereum-HD-wallet][https_ethfans.org_posts_from-BIP-to-ethereum-HD-wallet]

源代码链接：  
[https://github.com/myNameIssls/blockchain-study/tree/master/wallet][https_github.com_myNameIssls_blockchain-study_tree_master_wallet]

[https_ethfans.org_posts_from-BIP-to-ethereum-HD-wallet]: https://ethfans.org/posts/from-BIP-to-ethereum-HD-wallet
[https_github.com_myNameIssls_blockchain-study_tree_master_wallet]: https://github.com/myNameIssls/blockchain-study/tree/master/wallet