open-JSD-9969/src/main/java/com/eco/plugin/xx/grsso/utils/EncryptUtils.java

package com.eco.plugin.xx.grsso.utils;

import com.fr.json.JSONObject;
import com.fr.log.FineLoggerFactory;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import javax.crypto.Cipher;
import java.io.IOException;
import java.net.URLEncoder;
import java.security.*;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.HashMap;
import java.util.Map;

public class EncryptUtils {

    /**
     * base64加密
     * @param key
     * @return
     */
    public static String base64Encode(byte[] key){
        return (new BASE64Encoder()).encodeBuffer(key);
    }

    /**
     * base64解密
     * @param key
     * @return
     */
    public static byte[] base64DecodeB(String key){
        byte[] result = null;
        try {
            result = (new BASE64Decoder()).decodeBuffer(key);
        } catch (IOException e) {
            FineLoggerFactory.getLogger().info("FRLOG:BASE64解密异常:"+e.getMessage());
        }

        return result;
    }

    /**
     * 随机生成RSA密钥对
     * @throws NoSuchAlgorithmException
     * @return privateKey,publicKey
     */
    public static Map<String,String> genRSAKeyPair() throws NoSuchAlgorithmException {
        // 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，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();
        RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();   // 得到私钥
        RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();  // 得到公钥
        String publicKeyString = base64Encode(publicKey.getEncoded());
        // 得到私钥字符串
        String privateKeyString = base64Encode(privateKey.getEncoded());
        // 将公钥和私钥保存到Map
        Map<String,String> result = new HashMap<String,String>();
        result.put("publicKey",publicKeyString);
        result.put("privateKey",privateKeyString);

        return result;
    }

    /**
     * rsa 加密
     * @param str
     * @param publicKey
     * @return
     * @throws Exception
     */
    public static String rsaEncrypt(String str,String publicKey) throws Exception {
        //base64编码的公钥
        byte[] decoded = base64DecodeB(publicKey);
        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 = base64Encode(cipher.doFinal(str.getBytes("UTF-8")));
        return outStr;
    }

    /**
     * rsa解密
     * @param str
     * @param privateKey
     * @return
     * @throws Exception
     */
    public static String rsaDecrypt(String str,String privateKey) throws Exception {
        //64位解码加密后的字符串
        byte[] inputByte = base64DecodeB(str);
        //base64编码的私钥
        byte[] decoded = base64DecodeB(privateKey);
        RSAPrivateKey priKey = (RSAPrivateKey) KeyFactory.getInstance("RSA").generatePrivate(new PKCS8EncodedKeySpec(decoded));
        //RSA解密
        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.DECRYPT_MODE, priKey);
        String outStr = new String(cipher.doFinal(inputByte));
        return outStr;
    }


}