默认加解密方式

'use strict';const express = require('express')
const bodyParser = require('body-parser')
var crypto = require('crypto');
var NodeRSA = require('node-rsa');// 创建服务器
const app = express()// 初始化 bodyParser
app.use(bodyParser.urlencoded({ extend: false }));
app.use(bodyParser.json());// aes 加密解密
function aesEncrypt(data, key) {const cipher = crypto.createCipher('aes-128-cbc', key);var crypted = cipher.update(data, 'utf8', 'hex');crypted += cipher.final('hex');return crypted;
}
function aesDecrypt(encrypted, key) {const decipher = crypto.createDecipher('aes-128-cbc', key);var decrypted = decipher.update(encrypted, 'hex', 'utf8');decrypted += decipher.final('utf8');return decrypted;
}// rsa 加密解密
const key = new NodeRSA({ b: 512 })                          // 512 密钥长度
key.setOptions({ encryptionScheme: 'pkcs1' })         // 指定加密格式
//var publicDer = key.exportKey('public')                      // 公钥
//var privateDer = key.exportKey('private')                   // 私钥
function rsaEncrypt(data) {return key.encrypt(data, 'base64')
}
function rsaDecrypt(data) {return key.decrypt(data, 'utf8')
}// 测试加密
app.post('/aesEncrypt', async (req, res) => {res.send(aesEncrypt(req.body.data, req.body.key))})
app.post('/rsaEncrypt', async (req, res) => {res.send(rsaEncrypt(req.body.data))})// 测试解密
app.post('/aesDecrypt', async (req, res) => {res.send(aesDecrypt(req.body.data, req.body.key))})
app.post('/rsaDecrypt', async (req, res) => {res.send(rsaDecrypt(req.body.data))})// 处理 404 页面
app.use((req, res, next) => {res.status(404).send('404 not found')
})// 监听端口
app.listen(3000, () => {console.log('server start ...')
})

效果图

aes：

rsa：

使用已知的密钥加解密(RSA)

var rsaPublicKey = new NodeRSA('-----BEGIN PUBLIC KEY-----\n' + 'MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAL+JFgh+DyMJWWHNHaGgDyS6PWIMnR9w\n' +'6U4qKPiJX9YcNTQx7wD7SsM0/jZj0nQOhyvhfy+rj3qG97erfsQLa9cCAwEAAQ==\n' +'-----END PUBLIC KEY-----')var rsaPrviteKey = new NodeRSA('-----BEGIN RSA PRIVATE KEY-----\n' +'MIIBOwIBAAJBAL+JFgh+DyMJWWHNHaGgDyS6PWIMnR9w6U4qKPiJX9YcNTQx7wD7\n' +'SsM0/jZj0nQOhyvhfy+rj3qG97erfsQLa9cCAwEAAQJAAXPXr+7MzJY4kE5O6Dff\n' +'hYbICmNQGbnwewBE2UWpbWU7+gxRuuLA3N2AgrITC+tFUbp/dvjzkXxehZzQD7RD\n' +'yQIhAP4+yjKPUqQ/AbmgsITyZkQ7eB3epIkYJ1O7OM3AcwxbAiEAwNt/i2efgiQ0\n' +'np+zb4F+apn4ecxvT01JfNk/3Y+IJzUCIBOeQrnuB0F3PynUtWo8zhlbwWQEpwuR\n' +'Go/CdZqiy/3bAiEAiPygiQ3OwCslcTKwythpSiEZ3LH4spSMSXErKx5jsK0CIQCD\n' +'2ZrIVjgWLwNCsHtAreZmiyyPmflqcKuxd9VbiRhwig==\n' +'-----END RSA PRIVATE KEY-----')const encrypted = rsaPublicKey.encrypt('123456', 'base64')console.log(encrypted)const decrypted = rsaPrviteKey.decrypt(encrypted, 'utf8')console.log(decrypted)

补充：crypto-js 的 aes 加解密

// aes js 加密
function aesEncryptJs(data, key){const cipher = CryptoJS.AES.encrypt(data, CryptoJS.enc.Utf8.parse(key), {mode: CryptoJS.mode.ECB,padding: CryptoJS.pad.Pkcs7,iv: "",});const resultCipher = cipher.ciphertext.toString(CryptoJS.enc.Base64);return resultCipher;
}// aes js 解密
function aesDecryptJs(encrypted, key){const decipher = CryptoJS.AES.decrypt(encrypted, CryptoJS.enc.Utf8.parse(key), {mode: CryptoJS.mode.ECB,padding: CryptoJS.pad.Pkcs7,iv: "",});const resultDecipher = CryptoJS.enc.Utf8.stringify(decipher);return resultDecipher;
}