DES對 json 、http參數加密解密算法

網上眾多大神們的眾多方式實現加解密操作及保障數據安全性。今天無意中發現一篇以 DES加密解密算法。摘抄如下

工具類：

import java.security.SecureRandom;
import java.security.spec.KeySpec;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;

/**
 * 類  名  稱：AESEncryptTools   
 * 類  描  述：DES加密解密算法
 */
public final class DESEncryptTools {

    //加密算是是des
    private static final String ALGORITHM = "DES";
    //轉換格式
    private static final String TRANSFORMATION = "DES/ECB/PKCS5Padding";

    //利用8個字節64位的key給src加密
    public static byte[] encrypt(byte[] src, byte[] key) {
        try {
            //加密
            Cipher cipher = Cipher.getInstance(TRANSFORMATION);
            SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance(ALGORITHM);
            KeySpec keySpec = new DESKeySpec(key);
            SecretKey secretKey = secretKeyFactory.generateSecret(keySpec);
            cipher.init(Cipher.ENCRYPT_MODE, secretKey, new SecureRandom());
            byte[] enMsgBytes = cipher.doFinal(src);    
            return enMsgBytes;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    //利用8個字節64位的key給src解密
    public static byte[] decrypt(byte[] encryptBytes,byte[] key){
        try {
            //解密
            //Cipher deCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
            Cipher deCipher = Cipher.getInstance(TRANSFORMATION);
            SecretKeyFactory deDecretKeyFactory = SecretKeyFactory.getInstance(ALGORITHM);
            KeySpec deKeySpec = new DESKeySpec(key);
            SecretKey deSecretKey = deDecretKeyFactory.generateSecret(deKeySpec);
            deCipher.init(Cipher.DECRYPT_MODE, deSecretKey, new SecureRandom());
            byte[] deMsgBytes = deCipher.doFinal(encryptBytes);
            return deMsgBytes;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}

 

測試類：

import com.gzewell.ucomweb.util.DESEncryptTools;

public class DesMainTest {

    private static String key = "52linnuo";

    public static void main(String[] args) throws Exception{
        String msg = "hello world. hello ucom, 林諾歐巴";
        System.out.println("加密前："+msg);
        byte[] encryptBytes = DESEncryptTools.encrypt(msg.getBytes(),key.getBytes());
        System.out.println("加密后："+new String(encryptBytes));
        byte[] deMsgBytes = DESEncryptTools.decrypt(encryptBytes,key.getBytes());
        System.out.println("解密后："+new String(deMsgBytes));
    }
}

 

運行如下：

加解密用同一串 key 則加以保障數據安全，擼碼再也不用擔心被抓包了～

ps： key不能為 8 為以下純數字或純字母