小蚁NEO钱包账号创建原理解析

小蚁NEO区块链钱包账号

钱包账号

neo钱包主要包括address,privateKey,publicKey,scriptHash,WIF这几个部分;它们之间存在一定的转化关系：NEP<=>WIF <=> Private=> Public=> ScriptHash <=> Address不开玩笑，除了 address 可以告诉别人以外，其它的对谁都不要说，address类似一个银行卡号，是别人想给你转账的时候使用的

创建钱包账号

import { wallet } from '@cityofzion/neon-js';export function createWalletAccount(passphase: string, confirmPassphase: string, wif?: string): ?WalletAccount { if (passphase !==confirmPassphase) return null; var account=new wallet.Account(wif || wallet.generatePrivateKey()); const encryptedWIF=wallet.encrypt(account.WIF, passphase); const result: WalletAccount={ address: account.address, privateKey: account.privateKey, publicKey: account.publicKey, scriptHash: account.scriptHash, WIF: account.WIF, encryptedWIF, passphase, } return result;}

创建钱包账号单元测试

通过jest对创建钱包的方法进行单元测试test('createWalletAccount ', ()=> { const passphase='123456'; const account=createWalletAccount(passphase, passphase); console.log(account); expect(account.address !==null).toBe(true);});运行结果如下所示，就是当前生成的账号信息，可以使用neo-wallet登录一下试试。{ address: 'AUMgtJsw3kBrcA7poBYNaonZTGMNoqZNLy', privateKey: '10bb026b4015c481f0b5142aa5de36de40afc8c26e956011a3f820f7708fba', publicKey: '03af2ad8725c4926632d6816f5502d8f749dec369afadfe0bb5ac697fe22a0ef77', scriptHash: 'a8f677c132f2c82d73ff138e817e784c25ab068a', WIF: 'KwnETPM2m8wTAY3qySvDVLf3Vpfg77nvJhxR2Qyi8uMWKoqP1Q3f'

;, encryptedWIF: '6PYVHykkA1TfyQ2344wftv5e7vRoecV4iVwEVZ62aqCAx3dh3LDrRV19AS', passphase: '123456' }

转化

正如前面所述的，钱包里的各个数据存在一定的转化关系，至于详细的相互之间转化的原理，先不至讨论，我们可以使用neon-js的相关API来查看是否正确转化。NEP<=>WIF <=> Private=> Public=> ScriptHash <=> Address接下来先新建一个jtest的单元测试文件Core.spec.js

私钥到公钥的转化

这里使用上面生成的测试账号进行测试，注意因为是测试账号以后我不会再使用，所以暴露出来，如果是你的个人账号，请一定不要暴露WIF以及privateKey。单元测试代码如下：import {wallet} from '@cityofzion/neon-js';test('private:10bb026b4015c481f0b5142aa5de36de40afc8c26e956011a3f820f7708fba get PUb_Key',()=>{ const pubKey=wallet.getPublicKeyFromPrivateKey('10bb026b4015c481f0b5142aa5de36de40afc8c26e956011a3f820f7708fba'); expect(pubKey).toBe('03af2ad8725c4926632d6816f5502d8f749dec369afadfe0bb5ac697fe22a0ef77');});使用命令运行单元测试：npm run test __test__/neo/Core.spec.js运行结果：

所有转化

完整的转化关系如下：import {wallet} from '@cityofzion/neon-js';const walletAccount={ address: 'AUMgtJsw3kBrcA7poBYNaonZTGMNoqZNLy', privateKey: '10bb026b4015c481f0b5142aa5de36de40afc8c26e956011a3f820f7708fba', publicKey: '03af2ad8725c4926632d6816f5502d8f749dec369afadfe0bb5ac697fe22a0ef77', scriptHash: 'a8f677c132f2c82d73ff138e817e784c25ab068a', WIF: 'KwnETPM2m8wTAY3qySvDVLf3Vpfg77nvJhxR2Qyi8uMWKoqP1Q3f', encryptedWIF: '6PYVHykkA1TfyQ2344wftv5e7vRoecV4iVwEVZ62aqCAx3dh3LDrRV19AS', passphase: '123456' };// WIF <=> privateKeytest('WIF <=> privateKey',()=>{ const wif=wallet.getWIFFromPrivateKey(walletAccount.privateKey); expect(wif).toBe(walletAccount.WIF); const privateKey=wallet.getPrivateKeyFromWIF(walletAccount.WIF); expect(privateKey).toBe(walletAccount.privateKey);});// privateKey=> publicKeytest(`privateKey=> publicKey:${walletAccount.privateKey}`,()=>{ const pubKey=wallet.getPublicKeyFromPrivateKey(walletAccount.privateKey); expect(pubKey).toBe(walletAccount.publicKey);});// publicKey=> ScriptHashtest(`publicKey=> ScriptHash:${walletAccount.publicKey}`,()=>{ const scriptHash=wallet.getScriptHashFromPublicKey(walletAccount.publicKey); expect(scriptHash).toBe(walletAccount.scriptHash);});// scriptHash <=> addresstest('scriptHash <=> address',()=>{ const address=wallet.getAddressFromScriptHash(walletAccount.scriptHash); expect(address).toBe(walletAccount.address); const scriptHash=wallet.getScriptHashFromAddress(walletAccount.address); expect(scriptHash).toBe(walletAccount.scriptHash);});

总结

如上，主要说明了neo账号的创建，以及讲述账号各个字段之间的转化关系，本篇使用的api为neon-js，这是coz在github社区开源的neo钱包api，它包含了钱包开发的所有的api，我认为它是学习钱包的很好的材料，当然neo-gui，neo-cli本身也是开源的，完全可以使用它们的源码来学习，只是相较于C#，对于开发跨平台应用，我更喜欢基于electron的方案。为了学习开发neo钱包，我搭建了一个electron的boilerplate，作为快速启动的基础，这样其他同样想用此方案的朋友就不用再一次去搭建环境了。此boilerplate具体集成了以下技术方案：electron，React，dva，flow，antd;后面会抽时间把文中提到的jest也集成进去以便可以开箱即用的写单元测试。

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