springboot整合vue实现RSA算法加密
先放上util类，代码运行测试，RSATest类：
RSAEncrypt：
package com.lzp.util;
import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import java.io.*;
import java.security.*;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
public class RSAEncrypt {
/**
* 字节数据转字符串专用集合
*/
private static final char[] HEX_CHAR = {
'0', '1', '2', '3', '4', '5', '6',
'7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
/**
* 随机生成密钥对
*/
public static void genKeyPairBySystem(String filePath) {
// KeyPairGenerator类用于生成公钥和私钥对，基于RSA算法生成对象
KeyPairGenerator keyPairGen = null;
try {
keyPairGen = KeyPairGenerator.getInstance("RSA");
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// 初始化密钥对生成器，密钥大小为96-1024位
keyPairGen.initialize(1024, new SecureRandom());
// 生成一个密钥对，保存在keyPair中
KeyPair keyPair = keyPairGen.generateKeyPair();
// 得到私钥
RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
// 得到公钥
RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
try {
// 得到公钥字符串
String publicKeyString = Base64.encode(publicKey.getEncoded());
// 得到私钥字符串
String privateKeyString = Base64.encode(privateKey.getEncoded());
// 将密钥对写入到文件
FileWriter pubfw = new FileWriter(filePath + "/publicKey.keystore");
FileWriter prifw = new FileWriter(filePath + "/privateKey.keystore");
BufferedWriter pubbw = new BufferedWriter(pubfw);
BufferedWriter pribw = new BufferedWriter(prifw);
pubbw.write(publicKeyString);
pribw.write(privateKeyString);
pubbw.flush();
pubbw.close();
pubfw.close();
pribw.flush();
pribw.close();
prifw.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 随机生成密钥对
*/
public static String[] genKeyPair() {
// KeyPairGenerator类用于生成公钥和私钥对，基于RSA算法生成对象
KeyPairGenerator keyPairGen = null;
try {
keyPairGen = KeyPairGenerator.getInstance("RSA");
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// 初始化密钥对生成器，密钥大小为96-1024位
keyPairGen.initialize(1024, new SecureRandom());
// 生成一个密钥对，保存在keyPair中
KeyPair keyPair = keyPairGen.generateKeyPair();
// 得到私钥
RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
// 得到公钥
RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
try {
// 得到公钥字符串
String publicKeyString = Base64.encode(publicKey.getEncoded());
// 得到私钥字符串
String privateKeyString = Base64.encode(privateKey.getEncoded());
return new String[]{
publicKeyString, privateKeyString};
} catch (Exception e) {
e.printStackTrace();
}
return new String[]{
};
}
/**
* 从文件中输入流中加载公钥
*
* @param in 公钥输入流
* @throws Exception
* 加载公钥时产生的异常
*/
public static String loadPublicKeyByFile(String path) throws Exception {
try {
BufferedReader br = new BufferedReader(new FileReader(path
+ "/publicKey.keystore"));
String readLine = null;
StringBuilder sb = new StringBuilder();
while ((readLine = br.readLine()) != null) {
sb.append(readLine);
}
br.close();
return sb.toString();
} catch (IOException e) {
throw new Exception("公钥数据流读取错误");
} catch (NullPointerException e) {
throw new Exception("公钥输入流为空");
}
}
/**
* 从字符串中加载公钥
*
* @param publicKeyStr
* 公钥数据字符串
* @throws Exception
* 加载公钥时产生的异常
*/
public static RSAPublicKey loadPublicKeyByStr(String publicKeyStr)
throws Exception {
try {
byte[] buffer = Base64.decode(publicKeyStr);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(buffer);
return (RSAPublicKey) keyFactory.generatePublic(keySpec);
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此算法");
} catch (InvalidKeySpecException e) {
throw new Exception("公钥非法");
} catch (NullPointerException e) {
throw new Exception("公钥数据为空");
}
}
/**
* 从文件中加载私钥
*
* @param keyFileName
* 私钥文件名
* @return 是否成功
* @throws Exception
*/
public static String loadPrivateKeyByFile(String path) throws Exception {
try {
BufferedReader br = new BufferedReader(new FileReader(path
+ "/privateKey.keystore"));
String readLine = null;
StringBuilder sb = new StringBuilder();
while ((readLine = br.readLine()) != null) {
sb.append(readLine);
}
br.close();
return sb.toString();
} catch (IOException e) {
throw new Exception("私钥数据读取错误");
} catch (NullPointerException e) {
throw new Exception("私钥输入流为空");
}
}
public static RSAPrivateKey loadPrivateKeyByStr(String privateKeyStr)
throws Exception {
try {
byte[] buffer = Base64.decode(privateKeyStr);
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(buffer);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
return (RSAPrivateKey) keyFactory.generatePrivate(keySpec);
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此算法");
} catch (InvalidKeySpecException e) {
throw new Exception("私钥非法");
} catch (NullPointerException e) {
throw new Exception("私钥数据为空");
}
}
/**
* 公钥加密过程
*
* @param publicKey
* 公钥
* @param plainTextData
* 明文数据
* @return
* @throws Exception
* 加密过程中的异常信息
*/
public static byte[] encrypt(RSAPublicKey publicKey, byte[] plainTextData)
throws Exception {
if (publicKey == null) {
throw new Exception("加密公钥为空, 请设置");
}
Cipher cipher = null;
try {
// 使用默认RSA
cipher = Cipher.getInstance("RSA");
// cipher= Cipher.getInstance("RSA", new BouncyCastleProvider());
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
byte[] output = cipher.doFinal(plainTextData);
return output;
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此加密算法");
} catch (NoSuchPaddingException e) {
e.printStackTrace();
return null;
} catch (InvalidKeyException e) {
throw new Exception("加密公钥非法,请检查");
} catch (IllegalBlockSizeException e) {
throw new Exception("明文长度非法");
} catch (BadPaddingException e) {
throw new Exception("明文数据已损坏");
}
}
/**
* 私钥加密过程
*
* @param privateKey
* 私钥
* @param plainTextData
* 明文数据
* @return
* @throws Exception
* 加密过程中的异常信息
*/
public static byte[] encrypt(RSAPrivateKey privateKey, byte[] plainTextData)
throws Exception {
if (privateKey == null) {
throw new Exception("加密私钥为空, 请设置");
}
Cipher cipher = null;
try {
// 使用默认RSA
cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, privateKey);
byte[] output = cipher.doFinal(plainTextData);
return output;
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此加密算法");
} catch (NoSuchPaddingException e) {
e.printStackTrace();
return null;
} catch (InvalidKeyException e) {
throw new Exception("加密私钥非法,请检查");
} catch (IllegalBlockSizeException e) {
throw new Exception("明文长度非法");
} catch (BadPaddingException e) {
throw new Exception("明文数据已损坏");
}
}
/**
* 私钥解密过程
*
* @param privateKey
* 私钥
* @param cipherData
* 密文数据
* @return 明文
* @throws Exception
* 解密过程中的异常信息
*/
public static byte[] decrypt(RSAPrivateKey privateKey, byte[] cipherData)
throws Exception {
if (privateKey == null) {
throw new Exception("解密私钥为空, 请设置");
}
Cipher cipher = null;
try {
// 使用默认RSA
cipher = Cipher.getInstance("RSA");
// cipher= Cipher.getInstance("RSA", new BouncyCastleProvider());
cipher.init(Cipher.DECRYPT_MODE, privateKey);
byte[] output = cipher.doFinal(cipherData);
return output;
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此解密算法");
} catch (NoSuchPaddingException e) {
e.printStackTrace();
return null;
} catch (InvalidKeyException e) {
throw new Exception("解密私钥非法,请检查");
} catch (IllegalBlockSizeException e) {
throw new Exception("密文长度非法");
} catch (BadPaddingException e) {
throw new Exception("密文数据已损坏");
}
}
/**
* 公钥解密过程
*
* @param publicKey
* 公钥
* @param cipherData
* 密文数据
* @return 明文
* @throws Exception
* 解密过程中的异常信息
*/
public static byte[] decrypt(RSAPublicKey publicKey, byte[] cipherData)
throws Exception {
if (publicKey == null) {
throw new Exception("解密公钥为空, 请设置");
}
Cipher cipher = null;
try {
// 使用默认RSA
cipher = Cipher.getInstance("RSA");
// cipher= Cipher.getInstance("RSA", new BouncyCastleProvider());
cipher.init(Cipher.DECRYPT_MODE, publicKey);
byte[] output = cipher.doFinal(cipherData);
return output;
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此解密算法");
} catch (NoSuchPaddingException e) {
e.printStackTrace();
return null;
} catch (InvalidKeyException e) {
throw new Exception("解密公钥非法,请检查");
} catch (IllegalBlockSizeException e) {
throw new Exception("密文长度非法");
} catch (BadPaddingException e) {
throw new Exception("密文数据已损坏");
}
}
/**
* 字节数据转十六进制字符串
*
* @param data
* 输入数据
* @return 十六进制内容
*/
// public static String byteArrayToString(byte[] data) {
// StringBuilder stringBuilder = new StringBuilder();
// for (int i = 0; i < data.length; i++) {
// // 取出字节的高四位 作为索引得到相应的十六进制标识符 注意无符号右移
// stringBuilder.append(HEX_CHAR[(data[i] & 0xf0) >>> 4]);
// // 取出字节的低四位 作为索引得到相应的十六进制标识符
// stringBuilder.append(HEX_CHAR[(data[i] & 0x0f)]);
// if (i < data.length - 1) {
// stringBuilder.append(' ');
// }
// }
// return stringBuilder.toString();
// }
}
RSASignature：
package com.lzp.util;
import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
/**
* RSA签名验签类
*/
public class RSASignature {
/**
* 签名算法
*/
public static final String SIGN_ALGORITHMS = "SHA1WithRSA";
/**
* RSA签名
* @param content 待签名数据
* @param privateKey 商户私钥
* @param encode 字符集编码
* @return 签名值
*/
public static String sign(String content, String privateKey, String encode)
{
try
{
PKCS8EncodedKeySpec priPKCS8 = new PKCS8EncodedKeySpec( Base64.decode(privateKey) );
KeyFactory keyf = KeyFactory.getInstance("RSA");
PrivateKey priKey = keyf.generatePrivate(priPKCS8);
java.security.Signature signature = java.security.Signature.getInstance(SIGN_ALGORITHMS);
signature.initSign(priKey);
signature.update( content.getBytes(encode));
byte[] signed = signature.sign();
return Base64.encode(signed);
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
public static String sign(String content, String privateKey)
{
try
{
PKCS8EncodedKeySpec priPKCS8 = new PKCS8EncodedKeySpec( Base64.decode(privateKey) );
KeyFactory keyf = KeyFactory.getInstance("RSA");
PrivateKey priKey = keyf.generatePrivate(priPKCS8);
java.security.Signature signature = java.security.Signature.getInstance(SIGN_ALGORITHMS);
signature.initSign(priKey);
signature.update( content.getBytes());
byte[] signed = signature.sign();
return Base64.encode(signed);
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
/**
* RSA验签名检查
* @param content 待签名数据
* @param sign 签名值
* @param publicKey 分配给开发商公钥
* @param encode 字符集编码
* @return 布尔值
*/
public static boolean doCheck(String content, String sign, String publicKey,String encode)
{
try
{
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
byte[] encodedKey = Base64.decode(publicKey);
PublicKey pubKey = keyFactory.generatePublic(new X509EncodedKeySpec(encodedKey));
java.security.Signature signature = java.security.Signature
.getInstance(SIGN_ALGORITHMS);
signature.initVerify(pubKey);
signature.update( content.getBytes(encode) );
boolean bverify = signature.verify( Base64.decode(sign) );
return bverify;
}
catch (Exception e)
{
e.printStackTrace();
}
return false;
}
public static boolean doCheck(String content, String sign, String publicKey)
{
try
{
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
byte[] encodedKey = Base64.decode(publicKey);
PublicKey pubKey = keyFactory.generatePublic(new X509EncodedKeySpec(encodedKey));
java.security.Signature signature = java.security.Signature
.getInstance(SIGN_ALGORITHMS);
signature.initVerify(pubKey);
signature.update( content.getBytes() );
boolean bverify = signature.verify( Base64.decode(sign) );
return bverify;
}
catch (Exception e)
{
e.printStackTrace();
}
return false;
}
}
RSATest：
package com.lzp.util;
import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
public class RSATest {
public static void main(String[] args) throws Exception {
Long start = System.currentTimeMillis();
//获取公钥和私钥
String[] keys = RSAEncrypt.genKeyPair();
String publicKey=keys[0];
String privateKey=keys[1];
System.out.println("用时：" + (System.currentTimeMillis() - start) + "毫秒");
System.out.println("公钥：" + publicKey);
System.out.println("私钥：" + privateKey);
System.out.println("--------------前端--后台，公钥加密私钥解密过程-------------------");
String plainText = "admin123";
//公钥加密过程
byte[] cipherData = RSAEncrypt.encrypt(RSAEncrypt.loadPublicKeyByStr(publicKey), plainText.getBytes());
String cipher = Base64.encode(cipherData);
//私钥解密过程
byte[] res = RSAEncrypt.decrypt(RSAEncrypt.loadPrivateKeyByStr(privateKey), Base64.decode(cipher));
String restr = new String(res);
System.out.println("原文：" + plainText);
System.out.println("加密：" + cipher);
System.out.println("解密：" + restr);
System.out.println();
System.out.println("--------------后台--前端，私钥加密公钥解密过程-------------------");
plainText = "success登录成功";
//私钥加密过程
cipherData = RSAEncrypt.encrypt(RSAEncrypt.loadPrivateKeyByStr(privateKey), plainText.getBytes());
cipher = Base64.encode(cipherData);
//公钥解密过程
res = RSAEncrypt.decrypt(RSAEncrypt.loadPublicKeyByStr(publicKey), Base64.decode(cipher));
restr = new String(res);
System.out.println("原文：" + plainText);
System.out.println("加密：" + cipher);
System.out.println("解密：" + restr);
System.out.println();
System.out.println("---------------私钥签名过程------------------");
String content = "ihep_这是用于签名的原始数据";
String signstr = RSASignature.sign(content, privateKey);
System.out.println("签名原串：" + content);
System.out.println("签名串：" + signstr);
System.out.println();
System.out.println("---------------公钥校验签名------------------");
System.out.println("签名原串：" + content);
System.out.println("签名串：" + signstr);
System.out.println("验签结果：" + RSASignature.doCheck(content, signstr, publicKey));
System.out.println();
}
}
Vue中的代码，在表单提交之前讲密码进行加密，在后端进行解密。
const _this = this
//这个用来登录后恢复密码，就不会出现密码变成一长串的情况，在发送请求的方法后面加一句_this.loginForm.password = pw
const pw = this.loginForm.password
//新建一个加密的方法，因为我们的公钥要从后端拿，这样不影响this中的加密方法
const testEncrypt = new JSEncrypt();
//因为是测试可以从RSATest运行获得一对钥匙，正常来讲要在create方法中获得
testEncrypt.setPublicKey(this.publicKey)
//放在发送请求之前，这样发送的就是加密的密码
this.loginForm.password = testEncrypt.encrypt(this.loginForm.password)
springboot中判断用户登录的方法私钥如何生成看你们自己（如何生成在RSATest中）：
String privateKey ="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" ;
@PostMapping("/login")
public AjaxResult login(@RequestBody LoginBody loginBody) throws Exception {
AjaxResult ajax = AjaxResult.success();
//RSA对公钥进行解密
byte[] res = RSAEncrypt.decrypt(RSAEncrypt.loadPrivateKeyByStr(privateKey), Base64.decode(loginBody.getPassword()));
//获得解密后的密码
String password = new String(res);
loginBody.setPassword(password);
// 生成令牌
String token = loginService.login(loginBody.getUsername(), loginBody.getPassword(), loginBody.getCode(),
loginBody.getUuid());
ajax.put(Constants.TOKEN, token);
return ajax;
}