des算法+base64加密数据

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

/**
 * Created with IntelliJ IDEA.
 * User: HLW-RYH-1370
 * Date: 2019/3/6
 * Time: 9:24
 * To change this template use File | Settings | File Templates.
 */
public class Base64Util {
    /**
     * des 加密
     * @param plainText
     * @param desKeyParameter 加密秘钥
     * @return 二进制字节数组
     * @throws Exception
     */
    public static byte[] desEncrypt(byte[] plainText, String desKeyParameter) throws Exception {
        SecureRandom sr = new SecureRandom();
        byte rawKeyData[] = desKeyParameter.getBytes();
        DESKeySpec dks = new DESKeySpec(rawKeyData);
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey key = keyFactory.generateSecret(dks);
        Cipher cipher = Cipher.getInstance("DES");
        cipher.init(Cipher.ENCRYPT_MODE, key, sr);
        byte data[] = plainText;
        byte encryptedData[] = cipher.doFinal(data);
        return encryptedData;
    }

    /**
     * des 解密
     * @param encryptText
     * @param desKeyParameter 解密秘钥
     * @return 二进制字节数组
     * @throws Exception
     */
    public static byte[] desDecrypt(byte[] encryptText, String desKeyParameter) throws Exception {
        SecureRandom sr = new SecureRandom();
        byte rawKeyData[] = desKeyParameter.getBytes();
        DESKeySpec dks = new DESKeySpec(rawKeyData);
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey key = keyFactory.generateSecret(dks);
        Cipher cipher = Cipher.getInstance("DES");
        cipher.init(Cipher.DECRYPT_MODE, key, sr);
        byte encryptedData[] = encryptText;
        byte decryptedData[] = cipher.doFinal(encryptedData);
        return decryptedData;
    }

    /**
     * 编码
     *
     * @param content
     * @return
     */
    public static String base64Encode(byte[] content) {
        return new sun.misc.BASE64Encoder().encode(content);
    }

    /**
     * 解码
     *
     * @param source
     * @return
     */
    public static byte[] base64Decode(String source) {
        try {
            sun.misc.BASE64Decoder decoder = new sun.misc.BASE64Decoder();
            return decoder.decodeBuffer(source);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static String base64DesDecode(String source,String key) {
        try {
            sun.misc.BASE64Decoder decoder = new sun.misc.BASE64Decoder();
            return new String(desDecrypt(decoder.decodeBuffer(source),key));
        } catch (IOException e) {
            e.printStackTrace();
        } catch(Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static String base64DesEncode(String source,String key) {
        try {
            return  base64Encode(desEncrypt(source.getBytes(),key));
        } catch(Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static void main(String[] args) {
        String test = "Xe2/QEFxDkM=";
        String key = "jiuzhouyl";
        String a = base64DesDecode(test,key);
        String b = base64DesEncode("0",key);
        System.out.println(a+"   "+b);
    }


}

使用方式：

1、编码

将"0"编码成加密的base64，并附加秘钥

String b = base64DesEncode("0",key);

2、解码

将base64解码成"0"，须提供秘钥

String a = base64DesDecode("Xe2/QEFxDkM=",key);