init

tools-common/tools-common-core/src/main/java/com/study/toolscore/thread/RSAUtil.java

-//package com.study.toolscore.thread;
-//
-//
-//import java.nio.charset.StandardCharsets;
-//import java.security.*;
-//import java.security.interfaces.RSAPrivateKey;
-//import java.security.interfaces.RSAPublicKey;
-//import javax.crypto.BadPaddingException;
-//import javax.crypto.Cipher;
-//import javax.crypto.IllegalBlockSizeException;
-//import javax.crypto.NoSuchPaddingException;
-//import java.security.spec.InvalidKeySpecException;
-//import java.security.spec.PKCS8EncodedKeySpec;
-//import java.security.spec.X509EncodedKeySpec;
-//import java.util.Base64;
-//import java.util.Map;
-//import java.util.HashMap;
-//
-//public class RSAUtil {
-//
-//
-//    //公钥，可以写前端
-//    public static String public_key="MIGxxxxxx";
-//
-//    //私钥，只能放后端
-//    public static String private_key="MIICxxxxxxxx";
-//
-//
-//    public static void main(String[] args) {
-//        //解密数据
-//        try {
-//            //生成公钥和私钥
-//            genKeyPair();
-//            String publicKey = keyMap.get(0);
-//            //打印出来自己记录下
-//            System.out.println("公钥:" + publicKey);
-//            String privateKey = keyMap.get(1);
-//            //打印出来自己记录下
-//            System.out.println("私钥:" + privateKey);
-//
-//
-//
-//            //获取到后，可以放这里，测试下能不能正确加解密
-//            publicKey = public_key;
-//            privateKey = private_key;
-//
-//
-//
-//            String orgData = "test";
-//            System.out.println("原数据：" + orgData);
-//
-//            //加密
-//            String encryptStr =encrypt(orgData,publicKey);
-//            System.out.println("加密结果：" + encryptStr);
-//
-//            //解密
-//            String decryptStr = decrypt(encryptStr,privateKey);
-//            System.out.println("解密结果：" + decryptStr);
-//
-//        } catch (Exception e) {
-//            e.printStackTrace();
-//        }
-//    }
-//
-//    /**
-//     * RSA公钥加密
-//     *
-//     * @param str       加密字符串
-//     * @param publicKey 公钥
-//     * @return 密文
-//     * @throws Exception 加密过程中的异常信息
-//     */
-//    public static String encrypt(String str,String publicKey) throws Exception {
-//        //base64编码的公钥
-//        byte[] decoded = decryptBASE64(publicKey);
-//        Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
-//        RSAPublicKey pubKey = (RSAPublicKey) KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(decoded));
-//        //RSA加密
-//        Cipher cipher = Cipher.getInstance("RSA");
-//        cipher.init(Cipher.ENCRYPT_MODE, pubKey);
-//        String outStr = encryptBASE64(cipher.doFinal(str.getBytes(StandardCharsets.UTF_8)));
-//        return outStr;
-//    }
-//
-//    /**
-//     * RSA私钥解密
-//     *
-//     * @param str        加密字符串
-//     * @param privateKey 私钥
-//     * @return 明文
-//     * @throws Exception 解密过程中的异常信息
-//     */
-//    public static String decrypt(String str, String privateKey) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException, InvalidKeyException {
-//        //64位解码加密后的字符串
-//        byte[] inputByte = decryptBASE64(str);
-//        //base64编码的私钥
-//        byte[] decoded = decryptBASE64(privateKey);
-//        Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
-//        RSAPrivateKey priKey = (RSAPrivateKey) KeyFactory.getInstance("RSA").generatePrivate(new PKCS8EncodedKeySpec(decoded));
-//        //RSA解密
-//        Cipher cipher = Cipher.getInstance("RSA");
-//        cipher.init(Cipher.DECRYPT_MODE, priKey);
-//        return new String(cipher.doFinal(inputByte));
-//    }
-//
-//    //编码返回字符串
-//    public static String encryptBASE64(byte[] key) {
-//        return Base64.getEncoder().encodeToString(key);
-//    }
-//
-//    //解码返回byte
-//    public static byte[] decryptBASE64(String key) {
-//        return Base64.getDecoder().decode(key);
-//    }
-//
-//    /**
-//     * 密钥长度 于原文长度对应 以及越长速度越慢
-//     */
-//    private static final int KEY_SIZE = 1024;
-//    /**
-//     * 用于封装随机产生的公钥与私钥
-//     */
-//    private static final Map<Integer, String> keyMap = new HashMap<>();
-//
-//    /**
-//     * 随机生成密钥对
-//     * @throws Exception
-//     */
-//    public static void genKeyPair() throws Exception {
-//        // KeyPairGenerator类用于生成公钥和私钥对，基于RSA算法生成对象
-//        KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA");
-//        // 初始化密钥对生成器
-//        keyPairGen.initialize(KEY_SIZE, 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();
-//        String publicKeyString = encryptBASE64(publicKey.getEncoded());
-//        // 得到私钥字符串
-//        String privateKeyString = encryptBASE64(privateKey.getEncoded());
-//        // 将公钥和私钥保存到Map
-//        //0表示公钥
-//        keyMap.put(0, publicKeyString);
-//        //1表示私钥
-//        keyMap.put(1, privateKeyString);
-//    }
-//}