前端
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>JSEncrypt Example</title><script src="https://cdn.rawgit.com/spark/crypto-js/master/crypto-js.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/jsencrypt/3.0.0/jsencrypt.min.js"></script>
</head>
<body><script>const encrypt = new JSEncrypt();//从后端请求获取公钥const publicKey = 'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtrtCYsDNujsZxemUPUAga4CQ78QT8ImCXk8kkdDi9brJQAGINg1jiMYeQ4NAb5Ct3YMcZLuqVVvlO51tkj8CNOhR93weRH0HPMG51mrF19MFqZOT3Eqr073DkeeenCfgF/YOOcCPalCYYxdPf2bYIZ9ET6tyd04b+uaIzr0GK0B+NPYyurI1VL1T4inD7t38It5EXVbbrOjtUdZq/zmHYU95ONQo23qY5gY45Esq+N2u3rhLlzAsKq0d+elgKfzn2I9vEaqDbaGxGT9Es7owXClDG94GraRkQFYQil9H5/iVJ9oDqVGhEJlRyXx3yrX8oull8WY1n9nSW7h6UbyAoQIDAQAB'// 设置公钥encrypt.setPublicKey(publicKey);// 定义要加密的数据const password = 'hello world';// 加密数据，加密后的数据为base64编码的字符串，后端需先解码const encryptedPassword = encrypt.encrypt(password);//向后端发起请求await axios({url:"http",data:{password:encryptedPassword}})// 输出加密后的字符串console.log(encryptedPassword); </script></body>后端
包为
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import java.security.*;
import java.util.Base64; private static final KeyPairGenerator keyPairGen;private static final KeyPair keyPair ;private static final PublicKey publicKey ;private static final PrivateKey privateKey ;static {try {keyPairGen = KeyPairGenerator.getInstance("RSA");keyPairGen.initialize(2048);keyPair = keyPairGen.generateKeyPair();publicKey = keyPair.getPublic();privateKey = keyPair.getPrivate();} catch (NoSuchAlgorithmException e) {throw new RuntimeException(e);}}//获取rsa公钥public static String getPublicKey(){return Base64.getEncoder().encodeToString(publicKey.getEncoded());}//对获取的rsa密文解码获取密码public static String decryptRSA(String rawPassword) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {//注意这里一定要指定rsa的加密方式和填充方式为下面的，不然前端加密后的密文解析不了Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");cipher.init(Cipher.DECRYPT_MODE, privateKey);byte[] bytes = cipher.doFinal(Base64.getDecoder().decode(rawPassword));return new String(bytes);}
//获取密码@GetMapping("/test")public String test(@RequestBody res r,@RequestParam("raw")String raw) throws NoSuchPaddingException, IllegalBlockSizeException, NoSuchAlgorithmException, BadPaddingException, InvalidKeyException {return PasswordUtil.decryptRSA(r.getRaw());}
