前端加密处理，对称和非对称

JSEncrypt 加密解密 对称

下载
npm i jsencrypt

大家可以自己 在线生成密钥对 来试试

生成密钥对

// JSEncrypt 随机生成  公钥、私钥
export function createKey() {
  const crypt = new JSEncrypt({ default_key_size: 1024 });
  const publicDer = crypt.getPublicKey(); //公钥
  const privateDer = crypt.getPrivateKey(); //私钥
  return { publicDer, privateDer };
}

加密

import { JSEncrypt } from 'jsencrypt'
// 公钥
const key = `xxxx`
// 加密
export function setEncrypt (msg) {
  const jsencrypt = new JSEncrypt()
  jsencrypt.setPublicKey(key)
  return jsencrypt.encrypt(msg)
}

解密

// 私钥
const privateKey = `xxxx`
// 解密
export function decrypt (msg) {
  let decrypt = new JSEncrypt()
  decrypt.setPrivateKey(privateKey)
  var decryptMsg = decrypt.decrypt(msg)
  return decryptMsg
}

node-rsa 加密解密 非对称 可以动态生成密钥

下载
npm i node-rsa

const nodeRSA = require('node-rsa')

// 生成一个1024长度的密钥对
const key = new nodeRSA({ b: 1024 })
const publicKey = key.exportKey('pkcs8-public') // 公钥
const privateKey = key.exportKey('pkcs8-private') // 私钥
const txt = '123'

// 使用公钥加密
function encrypt(data) {
  const pubKey = new nodeRSA(publicKey, 'pkcs8-public')
  return pubKey.encrypt(Buffer.from(data), 'base64')
}

// 使用私钥解密
function decrypt(data) {
  const priKey = new nodeRSA(privateKey, 'pkcs1-private')
  return priKey.decrypt(Buffer.from(data, 'base64'), 'utf8')
}

const sign = encrypt(txt)
const _src = decrypt(sign)

console.log('加密：', sign)
console.log('解密：', _src)
/* 
加密： fBaBFVPv+96I/r6a2tfPbYWa0yjgJKQ+K2/E9obGNo0dYBOSBzW2PgnPOHX+/pq0wUZPxJzcwt5YcMtOsUNuZAYpaPZJ9o6IOEKj823HBNbyerDMUfU3rINCk2FilRuxFpQPmBZTbSvSumKligdtsh1Vz02DwdRgbJHp5bm4Hjk=
解密： 123
*/

// 使用私钥对消息签名
function signRSA(data) {
  const priKey = new nodeRSA(privateKey, 'pkcs8-private')
  return priKey.sign(Buffer.from(data), 'hex')
}

// 使用公钥验证签名
function verifyRSA(decrypt, signs) {
  const pubKey = new nodeRSA(publicKey, 'pkcs8-public')
  return pubKey.verify(Buffer.from(decrypt), signs, 'utf8', 'hex')
}

const signature = signRSA(sign)

console.log('私钥签名：' + signature)
console.log('公钥验证：' + verifyRSA(sign, signature))
/* 
私钥签名：873ae60fa3a5a89850185632b53e54b7c9919d146f2464a857f83679d9862e0612973c891994f6f576d4c04913a8b0a17b9b3adaa3577fcb81d637b2ede0c4a1cffadcaa99b81d09a7edfa69a813cd9f87fe52d96c371f6af533dd5577fdc0f6f7dc6857e1a78d425c0be71f7c440e44e8f932c4ed8890dba007721d10832e92
公钥验证：true
*/