crypto

crypto 模块提供了加密的功能，包括对 OpenSSL 的哈希、HMAC、加密、解密、签名、以及验证功能的一整套封装

const crypto = require('crypto'); // 使用require('crypto')来访问该模块const secret = 'abcdefg';const hash = crypto.createHamc('sha256', secret).update('I love cupcakes').digest('hex');console.log(hash);

想要了解更多关于crypto模块的知识可以去看相关的知识，这里就不多说了
链接：http://nodejs.cn/api/crypto.html

实践

1. 关键代码

注册登录要以相同的方式进行处理，这样子的密码才会一致

const crypto = require('crypto'); // 引入加密模块let userPwd = req.body.userPwd, md5 = crypto.createHash("md5"); // md5加密let newPwd = md5.update(userPwd).digest("hex");

2. 前置

引入模块、参数定义、数据库连接

require('./../util/util');let express = require('express');let router = express.Router();let mongoose = require('mongoose');let Users = require('../models/users');const crypto = require('crypto'); // 引入加密模块const SUCCESS = 2000; // 请求成功const NO_LOGIN = 4003; // 未登录const NO_POWER = 4001; // 没有权限const ERROR = 5000; // 请求失败const EXCEPTION = 4005; // 异常const WARN = 2001; // 警告mongoose.connect('mongodb://127.0.0.1:27017/teacher', {useNewUrlParser: true});mongoose.connection.on('connected', function () { console.log('MongoDB connected success.');});mongoose.connection.on('error', function () { console.log('MongoDB connected fail.');});mongoose.connection.on('disconnected', function () { console.log('MongoDB connected disconnected.')});/* GET users listing. */router.get('/', function(req, res, next) { res.send('respond with a resource');});

3. 注册

// 注册 router.post('/register', function (req, res, next) { let phone = req.body.phone, userPwd = req.body.userPwd, md5 = crypto.createHash("md5"); let newPwd = md5.update(userPwd).digest("hex"); let param = { createDate: '', phone: phone, userPwd: newPwd } // 检验手机号码是否被注册过 Users.findOne({phone: param.phone}, function (err, doc) { if (err) { res.json({ code: ERROR, msg: err.message, result: '' }) } else { if (doc) { // 手机号码被注册过 res.json({ code: WARN, msg: '该手机号码已被注册过', result: '' }) } else { // 手机号码没有被注册过 let createDate = new Date().Format('yyyy-MM-dd hh:mm:ss'); param.createDate = createDate; Users.insertMany([param], function(err2, doc2) { if (err2) { res.json({ code: ERROR, msg: err.message, result: '' }) } else { res.json({ code: SUCCESS, msg: '注册成功', result: doc2 }) } }) } } })});

4. 登录

// 登录router.post('/login', function (req, res, next) { let phone = req.body.phone, userPwd = req.body.userPwd; let md5 = crypto.createHash("md5"); let pwd = md5.update(userPwd).digest("hex"); let param = { phone: phone, userPwd: pwd } Users.findOne(param, function(err, doc) { if (err) { res.json({ code: ERROR, msg: err.message, result: '' }) } else { if (doc) { // 存储cookie res.cookie('userId', doc._id, { path: '/', maxAge: 1000 * 60 * 60 }); res.json ({ code: SUCCESS, msg: '登录成功', result: { phone: doc.phone, userId: doc._id } }) } else { res.json ({ code: WARN, msg: '账号或密码错误', result: '' }) } } })});